HDAC

シグナル伝達経路

研究分野

阻害剤の選択性比較

カタログ番号	製品カタログ	溶解度(25°C)
カタログ番号	製品カタログ	水	DMSO	アルコール
S1047	Vorinostat (SAHA)	<1 mg/mL	52 mg/mL	'''''3 mg/mL
S1053	Entinostat (MS-275)	<1 mg/mL	75 mg/mL	'<1 mg/mL
S1030	Panobinostat (LBH589)	<1 mg/mL	69 mg/mL	<1 mg/mL
S1045	Trichostatin A (TSA)	<1 mg/mL	23 mg/mL	<1 mg/mL
S1122	Mocetinostat (MGCD0103)	<1 mg/mL	13 mg/mL	<1 mg/mL
S3592	4-Phenylbutyric acid (4-PBA)	<1 mg/mL	33 mg/mL	''33 mg/mL
S1085	Belinostat (PXD101)	<1 mg/mL	64 mg/mL	<1 mg/mL
S3020	Romidepsin (FK228, Depsipeptide)	<1 mg/mL	10 mg/mL	''<1 mg/mL
S1484	MC1568	<1 mg/mL	13 mg/mL	<1 mg/mL
S2627	Tubastatin A HCl	<1 mg/mL	74 mg/mL	''<1 mg/mL
S2170	Givinostat (ITF2357)	<1 mg/mL	95 mg/mL	'3 mg/mL
S1095	Dacinostat (LAQ824)	<1 mg/mL	76 mg/mL	<1 mg/mL
S1194	CUDC-101	<1 mg/mL	20 mg/mL	<1 mg/mL
S1096	Quisinostat (JNJ-26481585) 2HCl	<1 mg/mL	79 mg/mL	<1 mg/mL
S1515	Pracinostat (SB939)	<1 mg/mL	72 mg/mL	27 mg/mL
S2012	PCI-34051	<1 mg/mL	59 mg/mL	<1 mg/mL
S1422	Droxinostat	<1 mg/mL	49 mg/mL	49 mg/mL
S1090	Abexinostat (PCI-24781)	<1 mg/mL	80 mg/mL	<1 mg/mL
S7229	RGFP966	<1 mg/mL	72 mg/mL	<1 mg/mL
S2244	AR-42	<1 mg/mL	63 mg/mL	63 mg/mL
S8001	Ricolinostat (ACY-1215)	<1 mg/mL	86 mg/mL	<1 mg/mL
S1168	Valproic Acid (NSC 93819) sodium salt	33 mg/mL	33 mg/mL	''33 mg/mL
S2818	Tacedinaline (CI994)	<1 mg/mL	54 mg/mL	<1 mg/mL
S2759	Fimepinostat (CUDC-907)	<1 mg/mL	102 mg/mL	<1 mg/mL
S1999	Sodium butyrate	22 mg/mL	<1 mg/mL	'22 mg/mL
S1848	Curcumin	<1 mg/mL	73 mg/mL	''''<1 mg/mL
S2779	M344	<1 mg/mL	62 mg/mL	4 mg/mL
S2239	Tubacin	<1 mg/mL	100 mg/mL	<1 mg/mL
S7292	RG2833 (RGFP109)	<1 mg/mL	68 mg/mL	10 mg/mL
S2693	Resminostat	<1 mg/mL	70 mg/mL	'70 mg/mL
S1703	Divalproex Sodium	62 mg/mL	62 mg/mL	62 mg/mL
S8043	Scriptaid	<1 mg/mL	65 mg/mL	<1 mg/mL
S4125	Sodium Phenylbutyrate	30 mg/mL	8 mg/mL	<1 mg/mL
S8049	Tubastatin A	<1 mg/mL	67 mg/mL	'<1 mg/mL
S0709	Tubastatin A TFA	5 mg/mL	40 mg/mL	<1 mg/mL
S3981	Sinapinic Acid	<1 mg/mL	44 mg/mL	44 mg/mL
S7324	TMP269	<1 mg/mL	100 mg/mL	2 mg/mL
S7595	Santacruzamate A (CAY10683)	<1 mg/mL	55 mg/mL	55 mg/mL
S8502	TMP195	<1 mg/mL	91 mg/mL	91 mg/mL
S3944	Valproic acid (VPA)			' mg/mL
S5810	UF010	<1 mg/mL	54 mg/mL	54 mg/mL
S7617	Tasquinimod	<1 mg/mL	81 mg/mL	11 mg/mL
S8743	SKLB-23bb	<1 mg/mL	79 mg/mL	79 mg/mL
S9275	Isoguanosine	-1 mg/mL	57 mg/mL	-1 mg/mL
S6548	NKL 22	<1 mg/mL	65 mg/mL	3 mg/mL
S0864	ACY-775	<1 mg/mL	66 mg/mL	'''66 mg/mL
S7726	BRD73954	<1 mg/mL	56 mg/mL	9 mg/mL
S8464	Citarinostat (ACY-241)	<1 mg/mL	41 mg/mL	'93 mg/mL
S5905	Suberohydroxamic acid	4 mg/mL	41 mg/mL	'<1 mg/mL
S8962	BRD3308	<1 mg/mL	57 mg/mL	<1 mg/mL
S7593	Splitomicin	<1 mg/mL	39 mg/mL	39 mg/mL
S7278	HPOB	<1 mg/mL	62 mg/mL	38 mg/mL
S7569	LMK-235	<1 mg/mL	58 mg/mL	58 mg/mL
S5438	Biphenyl-4-sulfonyl chloride	-1 mg/mL	50 mg/mL	-1 mg/mL
S7473	Nexturastat A	<1 mg/mL	68 mg/mL	2 mg/mL
S1073	BML-210 (CAY10433)	<1 mg/mL	68 mg/mL	3 mg/mL
S6738	TC-H 106	<1 mg/mL	68 mg/mL	'2 mg/mL
S2132	SR-4370	<1 mg/mL	61 mg/mL	61 mg/mL
S8773	TH34	<1 mg/mL	51 mg/mL	15 mg/mL
S8567	Tucidinostat (Chidamide)	<1 mg/mL	78 mg/mL	2 mg/mL
S6687	SIS17	<1 mg/mL	73 mg/mL	18 mg/mL
S2341	(-)-Parthenolide	<1 mg/mL	49 mg/mL	49 mg/mL
S8495	WT161	<1 mg/mL	86 mg/mL	1 mg/mL
S7596	CAY10603	<1 mg/mL	89 mg/mL	'5 mg/mL
S8648	ACY-738	<1 mg/mL	54 mg/mL	1 mg/mL
S9262	Raddeanin A	-1 mg/mL	100 mg/mL	-1 mg/mL
S1313	GSK3117391	<1 mg/mL	81 mg/mL	15 mg/mL
S8769	Tinostamustine(EDO-S101)	<1 mg/mL	14 mg/mL	2 mg/mL
S7555	Domatinostat (4SC-202)	<1 mg/mL	89 mg/mL	''<1 mg/mL
S7689	BG45	<1 mg/mL	42 mg/mL	2 mg/mL
S8323	ITSA-1 (ITSA1)	<1 mg/mL	58 mg/mL	5 mg/mL

亜型選択性的な製品

HDAC製品

All (72) HDAC阻害剤(71) HDAC活性剤(1)

製品コード	製品説明	文献中Selleckの製品使用例	お客様のフィードバック
S1047	Vorinostat (SAHA) Vorinostat (suberoylanilide hydroxamic acid, SAHA, MK0683, Zolinza) is an HDAC inhibitor with IC50 of ~10 nM in a cell-free assay. Vorinostat abrogates productive HPV-18 DNA amplification.	Adv Sci (Weinh), 2021, e2103360 Hepatology, 2021, 10.1002/hep.32245 Nat Commun, 2021, 12(1):4404	Western blot analysis of histone H3 acetylation in the spleen of untreated and vorinostat-treated hNF-E2 tg mice (n = 4 of each genotype).
S1053	Entinostat (MS-275) Entinostat (MS-275, SNDX-275) strongly inhibits HDAC1 and HDAC3 with IC50 of 0.51 μM and 1.7 μM in cell-free assays, compared with HDACs 4, 6, 8, and 10. Entinostat induces autophagy and apoptosis. Phase 3.	Science, 2021, 372(6537)eaba1786 Nat Chem Biol, 2021, 10.1038/s41589-021-00772-z Nat Commun, 2021, 12(1):2699	(A) U87 cells were cultured in the presence of DMSO, 1 uM MS-275 alone, 100 ng/ml IFN-λ1 alone, or both for the course of 4 d. Cell numbers were manually determined by hemacytometer counting at the indicated time points. (B, F) Cell proliferation of U87 cells or U87 spheroids in 3D culture with indicated treatment were performed using the WST-1 assay, which measures active cellular metabolism. (C) U87 spheroid formation in 3D culture was photographed at day 14 in culture (representative images are shown; 200x magnification). (D-E) Quantification of the relative sizes and numbers of U87 spheroids in (C). (G) Cell cycle analysis was performed in U87 cells with indicated treatment using propidium iodide staining. Numbers in the histogram show fractions (percent) of sub-G1, N, 2N, and polyploidy from left to right. (H) U87 cells with indicated treatment were stained with Annexin V-FITC and 7-AAD. Numbers indicate the percentage of FITC-positive cells (upper left quadrant). FITC, fluorescein isothiocyanate; 7-AAD, 7-Aminoactinomycin. In all panels, data represent the mean and SEM of at least three experiments.
S1030	Panobinostat (LBH589) Panobinostat (LBH589, NVP-LBH589) is a novel broad-spectrum HDAC inhibitor with IC50 of 5 nM in a cell-free assay. Panobinostat (LBH589) induces autophagy and apoptosis. Panobinostat effectively disrupts HIV latency in vivo. Phase 3.	Nat Med, 2021, 10.1038/s41591-020-01212-6 Cell Stem Cell, 2021, 28(1):48-62.e6 Hepatology, 2021, 10.1002/hep.32245	LSD1 and HDAC inhibitors exhibit synergistic growth inhibition. Cells were simultaneously treated with pargyline or HDAC inhibitors for 48 h.
S1045	Trichostatin A (TSA) Trichostatin A (TSA) is an HDAC inhibitor with IC50 of ~1.8 nM in cell-free assays.	Nature, 2021, 10.1038/s41586-021-04116-8 Mol Cell, 2021, S1097-2765(21)00051-4 Hepatology, 2021, 10.1002/hep.32245	HCT116 p53 null cells were treated with different HDACIs (1 μM TSA, 5 μM M344, 1 μM MS-275, 5 mM But, 10 mM VPA) for 24 h, and their expression of GRP78, PERK-eIF2α axis and ATF4, ATF3, CHOP and DR5 proteins.
S1122	Mocetinostat (MGCD0103) Mocetinostat (MGCD0103, MG0103) is a potent HDAC inhibitor with most potency for HDAC1 with IC50 of 0.15 μM in a cell-free assay, 2- to 10- fold selectivity against HDAC2, 3, and 11, and no activity to HDAC4, 5, 6, 7, and 8. Mocetinostat (MGCD0103) induces apoptosis and autophagy. Phase 2.	Cancer Cell, 2021, S1535-6108(20)30662-0 Nat Commun, 2021, 12(1):5056 Cancers (Basel), 2021, 13(15)3862	Comparison of MCAS ovarian cancer cells harboring control and CtBP2 knockdown shRNAs for sensitivity to chemotherapeutic agents. For each cell line, the MTT reading of the untreated cells was assigned as 100%. HDAC inhibitors: (a) Trichostatin A; (b) Vorinostat; (c) Belinostat; (d) MGCD0103; (e) valproic acid; and (f ) carboplatin, a non-HDAC inhibitor.
S3592^新	4-Phenylbutyric acid (4-PBA) 4-Phenylbutyric acid (4-PBA, Benzenebutyric acid) is a histone deacetylase (HDAC) inhibitor and a key epigenetic inducer of anti-HCV hepatic hepcidin. 4-Phenylbutyric acid inhibits LPS-induced inflammation through regulating endoplasmic-reticulum (ER) stress and autophagy in acute lung injury models.	Toxicol In Vitro, 2021, 77:105249 Nan Fang Yi Ke Da Xue Xue Bao, 2021, 41(5):702-709 Part Fibre Toxicol, 2020, 17(1):50
S1085	Belinostat (PXD101) Belinostat (PXD101, NSC726630, PX-105684) is a novel HDAC inhibitor with IC50 of 27 nM in a cell-free assay, with activity demonstrated in cisplatin-resistant tumors. Belinostat (PXD101) induces autophagy.	Adv Sci (Weinh), 2021, e2103360 Hepatology, 2021, 10.1002/hep.32245 Nat Commun, 2021, 12(1):117	Inhibition of LSD1 activity by HDAC inhibitors. a MDA-MB-231 and MDA-MB-468 cells were exposed to indicated HDAC inhibitors for 24 h.
S3020	Romidepsin (FK228, Depsipeptide) Romidepsin (FK228, Depsipeptide, FR 901228, NSC 630176) is a potent HDAC1 and HDAC2 inhibitor with IC50 of 36 nM and 47 nM in cell-free assays, respectively. Romidepsin (FK228/depsipeptide) controls growth and induces apoptosis in neuroblastoma tumor cells.	Hepatology, 2021, 10.1002/hep.32245 Nat Commun, 2021, 12(1):7213 Nucleic Acids Res, 2021, 49(4):2390-2399	Effects of combination of bort/romidepsin on HDAC6 inhibition and activation of ER stress signaling. HA cells were treated with combination of 15 nM bortezomib and 5 nM romidepsin or either drug alone for 24 hr. Expression of CHOP/GADD153 (green signals) and cleaved PARP (red signals) was detected by immunoﬂuorescent staining. DAPI (blue signals) stained the cell nuclei.
S1484	MC1568 MC1568 is a selective HDAC inhibitor for maize HD1-A with IC50 of 100 nM in a cell-free assay. It is 34-fold more selective for HD1-A than HD1-B.	Hepatology, 2021, 10.1002/hep.32245 Cells, 2021, 10(11)3249 Front Cell Dev Biol, 2021, 9:771466	HDAC4 and OA1 expression correlate inversely during starvation, and HDAC4 inhibition or knockdown leads to OA1 transgene up-regulation. Quantification of OA1 mRNA expression by real-time PCR in HeLa-OA1myc cells at the indicated times of incubation with MC1568 (class II HDACi). Data are expressed as the fold change compared with the amount of the OA1 mRNA in mock conditions at each time point.
S2627	Tubastatin A HCl Tubastatin A HCl (TSA) is a potent and selective HDAC6 inhibitor with IC50 of 15 nM in a cell-free assay. It is selective (1000-fold more) against all other isozymes except HDAC8 (57-fold more).	Sci Adv, 2021, 7(49):eabk0490 Sci Adv, 2021, 7(49):eabk0490 Thyroid, 2021, 10.1089/thy.2020.0948	Control and MEC17 KD macrophages (RAW264.7) were treated with TBSA or DMSO for 12 hours followed by LPS treatment for indicated time. p38 phosphorylation were determined by immuno-blotting.
S2170	Givinostat (ITF2357) Givinostat (ITF2357) is a potent HDAC inhibitor for maize HD2, HD1B and HD1A with IC50 of 10 nM, 7.5 nM and 16 nM in cell-free assays. Phase 2.	Elife, 2021, 10e68714 PLoS One, 2021, 16(11):e0260633 Cancers (Basel), 2020, 12(11)E3161	Cells were treated with indicated HDAC inhibitors for 4 days and then cultured without drug for an additional 4 days. On day 8, HDAC inhibitors were added back to the culture for another 4 days. The percentage of GFP-positive cells was measured at days 4, 8 and 12. The concentrations of HDAC inhibitors used for the experiments are as follows: vorinostat, 1 uM; TsA, 200 nM; oxamflatin, 1 uM; scriptaid, 1 uM; belinostat, 200 nM; and givinostat, 200 nM. The fraction of GFP-positive cells was measured by flow cytometry at the indicated timepoints. The effect of HDAC inhibitors or anti-CD3 plus anti-CD28 antibodies over time was normalized to the effect of anti-CD3 plus anti-CD28 antibodies at day 2. Error bars represent SEM, n = 3. APHA, 3-(1-methyl-4-phenylacetyl-1H-2-pyrrolyl)-N-hydroxypropenamide.
S1095	Dacinostat (LAQ824) Dacinostat (LAQ824, NVP-LAQ824) is a novel HDAC inhibitor with IC50 of 32 nM and is known to activate the p21 promoter.	ACS Omega, 2019, 4(22):19895-19904 Cancer Res, 2018, 78(20):5731-5740 Oncogene, 2018, 37(50):6414-6424	Class I selective HDACi have the highest INS-1 rescue potential . INS-1 cells were monitored using the real-time xCELLigence system h and the impedance (cell adhesion) was measured as a surrogate of cell viability (cell index) as described in the Methods. (a ) The impedance of duplicates of control (green line), cytokine-exposed (red line) and cytokine+ITF-J-exposed INS-1 cells (blue line) was followed from the start of exposure (indicated by the arrow). Heat maps of 13 different ITF HDAC inhibitor compounds ( b )orsix different commercial HDAC inhibitor compounds (c) were made based on their IC50 values towards selected HDACs . The HDACi inhibitors are ranked after rescue potential according to ESM Tables 1, 2 .( c) Values are corrected for differences in potency since they varied from 33.3 (CI-994) to 0.041 (LAQ824). (d ) Colour code for both heat maps: low IC50 values coloured red, intermediate IC50 values coloured black and high IC50 values coloured blue; grey indicates undetermined IC50.
S1194	CUDC-101 CUDC-101 is a potent multi-targeted inhibitor against HDAC, EGFR and HER2 with IC50 of 4.4 nM, 2.4 nM, and 15.7 nM, and inhibits class I/II HDACs, but not class III, Sir-type HDACs. Phase 1.	Cancer Sci, 2020, 112(1):133-143 Anticancer Drugs, 2020, 31(2):158-168 NPJ Breast Cancer, 2020, 6:30	(a) Decay-corrected microPET/CT scan of MDA-MB-231 tumor bearing mice (n = 4) at 2, 4, and 24 h after i.v. injection of [64Cu]7. The image obtained with coinjection of CUDC-101 (20 mg/kg body weight) is shown for a 24 h blockade. Tumors are indicated by arrows. (b) Decay-corrected region-of interest (ROI) analysis on microPET images of the tumor uptake of [64Cu]7 with or without coinjection of CUDC-101 (20 mg/kg body weight). , P < 0.05; *, P < 0.01.
S1096	Quisinostat (JNJ-26481585) 2HCl Quisinostat (JNJ-26481585) 2HCl is a novel second-generation HDAC inhibitor with highest potency for HDAC1 with IC50 of 0.11 nM in a cell-free assay, modest potent to HDACs 2, 4, 10, and 11; greater than 30-fold selectivity against HDACs 3, 5, 8, and 9 and lowest potency to HDACs 6 and 7. Phase 2.	Nat Commun, 2021, 12(1):5404 Nucleic Acids Res, 2021, 49(4):2390-2399 Neuro Oncol, 2021, 23(3):376-386	WT ESCs were treated with varying concentrations of the HDAC1 specific inhibitor JNJ-26481585 for 24 h. Lysates were collected for ChIP experiments, and a H3K27ac antibody was used for immunoprecipitation (IP). qPCR was performed using primers specific for Hoxa1 RARE2. ChIP with an IgG antibody (negative control) is included in each panel. Error bars represent standard error of independent experiments where n = 3 for biological repeats. *, p < 0.05.
S1515	Pracinostat (SB939) Pracinostat (SB939) is a potent pan-HDAC inhibitor with IC50 of 40-140 nM with exception for HDAC6. It has no activity against the class III isoenzyme SIRT I. Pracinostat (SB939) induces apoptosis in tumor cells. Phase 2.	Cancer Lett, 2021, 521:268-280 Front Immunol, 2021, 12:771453 Cell, 2020, S0092-8674(20)31394-5	Hyperacetylation of P. falciparum proteins by SB939. Synchronous 3D7 trophozoite-stage P. falciparum parasites were treated with 50 or 500 nM chloroquine (CQ), SAHA, or SB939 or with vehicle only (control; 0.05% DMSO) for 3 h. Following saponin lysis, parasite protein lysates were prepared and SDS-PAGE and Western blotting carried out using anti-acetyl H4 or anti-pan-acetyl lysine (K103) antibodies. Coomassie blue staining was carried out as a loading control.
S2012	PCI-34051 PCI-34051 is a potent and specific HDAC8 inhibitor with IC50 of 10 nM in a cell-free assay. It has greater than 200-fold selectivity over HDAC1 and 6, more than 1000-fold selectivity over HDAC2, 3, and 10. PCI-34051 induces caspase-dependent apoptosis.	Thyroid, 2021, 10.1089/thy.2020.0948 Tuberculosis (Edinb), 2021, 127:102062 Nat Commun, 2020, 11(1):5783	(d) Effects of HDAC8 activity on ISO-induced augmentation of apoptosis and TIPRL expression. H1299 cells were sequentially treated with 10 μm PCI-34051 for 24 h, ISO for 30 min and 50 μM cisplatin for 48 h before the western blot analysis.
S1422	Droxinostat Droxinostat (NS 41080) is a selective inhibitor of HDAC, mostly for HDACs 6 and 8 with IC50 of 2.47 μM and 1.46 μM, greater than 8-fold selective against HDAC3 and no inhibition to HDAC1, 2, 4, 5, 7, 9, and 10.	Exp Ther Med, 2021, 21(5):515 Cancer Sci, 2020, 111(7):2374-2384 Cancer Res, 2018, 78(20):5731-5740	Chemical inhibition of HDAC3, -6, and -8 with the selective HDAC inhibitor Droxinostat (2 uM) resulted in a significant increase in the percent of 2D10 cells expressing GFP in cells that had been depleted of HDAC3 but not HDAC1 or -2. (*p<0.05).
S1090	Abexinostat (PCI-24781) Abexinostat (PCI-24781, CRA-024781) is a novel pan-HDAC inhibitor mostly targeting HDAC1 with K_i of 7 nM, modest potent to HDACs 2, 3, 6, and 10 and greater than 40-fold selectivity against HDAC8. Phase 1/2.	Nucleic Acids Res, 2021, 49(4):2390-2399 Cancers (Basel), 2021, 13(17)4476 Clin Epigenetics, 2021, 13(1):187	Class I selective HDACi have the highest INS-1 rescue potential . INS-1 cells were monitored using the real-time xCELLigence system h and the impedance (cell adhesion) was measured as a surrogate of cell viability (cell index) as described in the Methods. (a ) The impedance of duplicates of control (green line), cytokine-exposed (red line) and cytokine+ITF-J-exposed INS-1 cells (blue line) was followed from the start of exposure (indicated by the arrow). Heat maps of 13 different ITF HDAC inhibitor compounds ( b )orsix different commercial HDAC inhibitor compounds (c) were made based on their IC50 values towards selected HDACs . The HDACi inhibitors are ranked after rescue potential according to ESM Tables 1, 2 .( c) Values are corrected for differences in potency since they varied from 33.3 (CI-994) to 0.041 (LAQ824). (d ) Colour code for both heat maps: low IC50 values coloured red, intermediate IC50 values coloured black and high IC50 values coloured blue; grey indicates undetermined IC50.
S7229	RGFP966 RGFP966 is an HDAC3 inhibitor with IC50 of 0.08 μM in cell-free assay, exhibits > 200-fold selectivity over other HDAC.	Thyroid, 2021, 10.1089/thy.2020.0948 Signal Transduct Target Ther, 2021, 6(1):333 FASEB J, 2021, 35(11):e22009	THP-1 cells were treated with indicated concentrations of Ara-C and/or RGFP966 for 24 h, and lysates were immunoblotted for p-AKT473, AKT and γH2AX.
S2244	AR-42 AR-42 (HDAC-42) is an HDAC inhibitor with IC50 of 30 nM. Phase 1.	Nat Commun, 2021, 12(1):256 Cancer Cell, 2020, 13;37(4):599-617 e7 J Mater Chem B, 2020, 8(37):8558-8572	One- to 2-month-old mice of both genotypes showed an increase in H3K4me3 (n = 5 to 6 per group) associated with a dose-dependent increase in neurogenesis in Kmt2d+/βGeo mice (monitored by normalized DCX expression) (n = 4 to 6 per group) upon treatment with the HDACi AR-42. There was no difference in either H3K4me3 or neurogenesis between Kmt2d+/βGeo and Kmt2d+/+ animals at a dose of 10 mg/kg per day.
S8001	Ricolinostat (ACY-1215) Ricolinostat (ACY-1215, Rocilinostat) is a selective HDAC6 inhibitor with IC50 of 5 nM in a cell-free assay. It is >10-fold more selective for HDAC6 than HDAC1/2/3 (class I HDACs) with slight activity against HDAC8, minimal activity against HDAC4/5/7/9/11, Sirtuin1, and Sirtuin2. Ricolinostat (ACY-1215) suppresses cell proliferation and promotes apoptosis. Phase 2.	Cancer Res, 2021, 81(20):5325-5335 Blood Cancer J, 2021, 11(12):194 Elife, 2021, 10e63810	(a) Representative images from hTERT RPE-1 cells transiently transfected with siControl (siC), treated with vehicle (DMSO), alisertib (MLN8237) or rocilinostat (ACY1215) at the time of serum withdrawal for 48 h. Ciliation monitored by immunofluorescent staining using acetylated α-tubulin (cilia marker) and pericentrin (basal body marker). Nuclei counterstained using DAPI. Highlighted boxes show magnified cilia. Scale bar, 3 μM.
S1168	Valproic Acid (NSC 93819) sodium salt Valproic Acid sodium salt (NSC 93819, Sodium valproate) is a HDAC inhibitor by selectively inducing proteasomal degradation of HDAC2, used in the treatment of epilepsy, bipolar disorder and prevention of migraine headaches. Valproic acid induces Notch1 signaling in small cell lung cancer (SCLC) cells. Valproic acid is under investigation for treatment of HIV and various cancers. Valproic acid (VPA) induces autophagy and mitophagy by upregulation of BNIP3 and mitochondrial biogenesis by upregulating PGC-1α.	Pigment Cell Melanoma Res, 2021, 10.1111/pcmr.13014 Front Immunol, 2021, 12:771453 Front Oncol, 2021, 11:723966	Western blot analysis of Acetylated Histone and Histone. 0-10μM sodium valproate was added.
S2818	Tacedinaline (CI994) Tacedinaline (CI994, PD-123654, GOE-5549, Acetyldinaline) is a selective class I HDAC inhibitor with IC50 of 0.9, 0.9, 1.2, and >20 μM for human HDAC 1, 2, 3, and 8, respectively. Phase 3.	Front Oncol, 2021, 11:648023 Int J Mol Sci, 2021, 22(9)4559 Tuberculosis (Edinb), 2021, 127:102062	A, 5×10⁶ HeLa, A549, 293T, and H1299 cells were seeded in 10-cm cell culture dishes on day 0 and treated with dimethyl sulfoxide, 10 μM CI994, or 1 μM RGFP966 for 12 h. Cell lysates were collected for Western blotting analysis of Apaf-1 and -actin.
S2759	Fimepinostat (CUDC-907) CUDC-907 is a dual PI3K and HDAC inhibitor for PI3Kα and HDAC1/2/3/10 with IC50 of 19 nM and 1.7 nM/5 nM/1.8 nM/2.8 nM, respectively. CUDC-907 induces cell cycle arrest and apoptosis in breast cancer cells. Phase 1.	Blood Cancer J, 2021, 11(6):111 Cancer Chemother Pharmacol, 2021, 10.1007/s00280-020-04210-0 Exp Hematol Oncol, 2021, 10(1):19	Representative Oil Red O staining of lipid-filled mature adipocytes on day 7 for uninduced cells (a), adipocyteinduced hMSCs exposed to the vehicle control (b) or CUDC-907-treated cells (500 nM) (c). Nile red staining (d and e) on day 7 of post-adipocytic induction in hMSCs and after exposure to CUDC-907. Images were captured at ×20 magnification using the FLoid Cell Imaging Station. The level of Nile red staining was quantified using the Molecular Devices M5 Microplate Reader (f). Data are presented as mean ± S.E (n = 16) from three independent experiments, ***P <0.0005.
S1999	Sodium butyrate Sodium butyrate (NaB, Butanoic acid sodium salt), sodium salt of butyric acid, is a histone deacetylase inhibitor and competitively binds to the zinc sites of class I and II histone deacetylases (HDACs). Sodium butyrate (NaB) inhibits cell cycle progression, promotes differentiation, and induces apoptosis and autophagy in several types of cancer cells.	Cell Mol Life Sci, 2021, 10.1007/s00018-021-03883-x Front Cell Dev Biol, 2021, 9:662868 Int J Mol Sci, 2020, 21(2)	U87 cells were cultured with DMSO or 10 µM 5azadC for 72 h. For the latter, 1 µM Trichostatin A (TSA), 10 mM sodium butyrate (NaBu), 5 mM nicotinamide (NAM), or 0.5 µM apicidin were added in the last 24 h. IFNLR1 expression was determined by RT-qPCR.
S1848	Curcumin Curcumin (Diferuloylmethane, Natural Yellow 3, Turmeric yellow) is the principal curcuminoid of the popular Indian spice turmeric, which is a member of the ginger family (Zingiberaceae). It is an inhibitor of p300 histone acetylatransferase（IC50~25 μM）and Histone deacetylase (HDAC); activates Nrf2 pathway and supresses the activation of NF-κB. Curcumin induces mitophagy, autophagy, apoptosis, and cell cycle arrest with antitumor activity. Curcumin reduces renal damage associated with rhabdomyolysis by decreasing ferroptosis-mediated cell death. Curcumin exhibits anti-infective properties against various human pathogens like the influenza virus, hepatitis C virus, HIV and so on.	Adv Sci (Weinh), 2021, e2103360 Front Immunol, 2021, 12:656242 Aging (Albany NY), 2021, 13(10):13968-14000
S2779	M344 M344 is a potent HDAC inhibitor with IC50 of 100 nM and able to induce cell differentiation.	Nat Commun, 2020, 29;11(1):2086 Cell Syst, 2019, 8(2):97-108 Front Cell Neurosci, 2019, 13:468	HCT116 p53 null cells were treated with different HDACIs (1 μM TSA, 5 μM M344, 1 μM MS-275, 5 mM But, 10 mM VPA) for 24 h. ATF4, ATF3, CHOP and DR5 proteins were measured by Western blot.
S2239	Tubacin Tubacin is a highly potent and selective, reversible, cell-permeable HDAC6 inhibitor with an IC50 of 4 nM in a cell-free assay, approximately 350-fold selectivity over HDAC1. Tubacin reduces the replication of the Japanese Encephalitis Virus via the decrease of viral RNA synthesis.	Signal Transduct Target Ther, 2021, 6(1):333 STAR Protoc, 2021, 2(3):100674 Cancers (Basel), 2020, 12(11)E3172	Verification of Hdac6 deletion in knockout MEFs. Expression of HDAC6 and acetylation of tubulin were analyzed by immunoblotting.
S7292	RG2833 (RGFP109) RG2833 (RGFP109) is a brain-penetrant HDAC inhibitor with IC50 of 60 nM and 50 nM for HDAC1 and HDAC3 in cell-free assays, respectively.	Front Mol Neurosci, 2021, 14:616886 Nat Metab, 2021, 3(1):75-89 Theranostics, 2020, 10(21):9644-9662	The cells were treated with 1 μM RG2833 (HDAC1/3 inhibitor), 2 μM RGFP966 (HDAC3 inhibitor), 1 μM TSA (pan-HDAC inhibitor), or vehicle for 16 h in serum-free medium. Cell lysates were analysed by Western blotting for expression of SREBP-2 activated fragment, HMG-CoA reductase and APP. Shown are representative blots and quantifications with means ± SEM of the indicated number of independent experiments performed in duplicate. p < 0.05; *p < 0.01; n.s., not significant in one-sample t-test.
S2693	Resminostat Resminostat (RAS2410) dose-dependently and selectively inhibits HDAC1/3/6 with IC50 of 42.5 nM/50.1 nM/71.8 nM, less potent to HDAC8 with IC50 of 877 nM.	J Cancer, 2020, 6;11(14):4059-4072 Oncol Lett, 2020, 20(1):533-540 Biochemistry, 2019, 58(49):4912-4924	Assessment of apoptosis by flow cytometry. (A) SCC25 cells were treated with 2.5 μM and 5 μM resminostat. *Significant induction of cell death.
S1703	Divalproex Sodium Divalproex Sodium, consisting of a compound of sodium valproate and valproic acid in a 1:1 molar relationship in an enteric coated form, is a HDAC inhibitor, used in the treatment for epilepsy.	CNS Neurosci Ther, 2018, 24(5):404-411	Divalproex sodium increases the level of acetylated histone H3 level in ataxin-3-transfected HEK293 cells. Normal (15CAG) or expanded (77CAG) ataxin-3-transfected cells were treated with divalproex sodium (Selleck chemical, 0.3 mmol/L in DMSO, (+)) or with DMSO alone (−) 48 h after transfection. The cells were treated with divalproex sodium or DMSO over 6, 12, and 24 h. The Western blot was probed with antiacetylated histone H3, antihistone H3, and antiataxin-3. Antibodies include antihistone H3 and antiataxin-3 are used as controls. The x-axis shows the different treatment group. The y-axis represents the acetylated histone H3 values normalized to histone H3. Error bars represent the standard error of the mean. Data represent three independent experiments (n = 3). The data with a normal distribution were analyzed with Student’s t-test. *P < 0.05
S8043	Scriptaid Scriptaid (GCK 1026) is an inhibitor of HDAC. It shows a greater effect on acetylated H4 than H3.	J Appl Physiol (1985), 2020, 128(2):276-285 Nat Biotechnol, 2019, 10.1038/s41587-019-0372-z Pharmacol Res, 2019, 146:104281	The relative expression of Oct4, Nanog, Klf4 and Sox2 at the blastocyst stage in ICSI-, ROSI- and ROSI + incubation of zygotes with 250 nM Scriptaid for 10 h (ROSI-S)-derived embryos. Five blastocysts in each pool were examined to obtain the data set in each column. Q-PCR analysis was performed in triplicate. Different letters indicate significant differences between values (P < 0.05).
S4125	Sodium Phenylbutyrate Sodium phenylbutyrate is a salt of 4-phenylbutyrate (4-PBA) or 4-phenylbutyric acid.Sodium phenylbutyrate is a histone deacetylase inhibitor, used to treat urea cycle disorders.	Cell Death Dis, 2021, 12(11):1016 Am J Cancer Res, 2021, 11(3):691-711 Acta Pharmacol Sin, 2021, 10.1038/s41401-021-00700-w	Representative images and quantitative analysis results of the transwell experiment. Notes: (A) Results of migration assay for DU145. (B) Results of invasion assay for DU145. (C) Results of migration assay for PC3. (D) Results of invasion assay for PC3. “*” Means significantly different from control group, P<0.05. Abbreviation: SPB, sodium phenylbutyrate.
S8049	Tubastatin A Tubastatin A is a potent and selective HDAC6 inhibitor with IC50 of 15 nM in a cell-free assay. It is selective against all the other isozymes (1000-fold) except HDAC8 (57-fold). Tubastatin A promotes autophagy and increases apoptosis.	Sci Adv, 2021, 7(49):eabk0490 Sci Adv, 2021, 7(49):eabk0490 Thyroid, 2021, 10.1089/thy.2020.0948	Control and MEC17 KD macrophages (RAW264.7) were treated with TBSA or DMSO for 12 hours followed by LPS treatment for indicated time. p38 phosphorylation were determined by immuno-blotting.
S0709	Tubastatin A TFA Tubastatin A TFA (Tubastatin A trifluoroacetate salt) is a potent and selective HDAC6 inhibitor with IC50 of 15 nM in a cell-free assay. It is selective against all the other isozymes (1000-fold) except HDAC8 (57-fold). Tubastatin A promotes autophagy and increases apoptosis.
S3981	Sinapinic Acid Sinapinic acid (Sinapic acid) is a small naturally occurring hydroxycinnamic acid which belongs to phenylpropanoid family and commonly used as matrix in MALDI mass spectrometry. Sinapinic acid (Sinapic acid) acts as an inhibitor of HDAC, with IC50 of 2.27 mM, and also inhibits ACE-I activity.
S7324	TMP269 TMP269 is a potent, selective class IIa HDAC inhibitor with IC50 of 157 nM, 97 nM, 43 nM and 23 nM for HDAC4, HDAC5, HDAC7 and HDAC9, respectively.	Cell Death Dis, 2021, 12(6):501 Signal Transduct Target Ther, 2021, 6(1):333 Cells, 2021, 10(11)3249	Staining of live (calcein-AM, green) and dead (PI, red) UCC cells after 72 h of treatment with TMP269. Data shown are a representative experiment of a set of 3
S7595	Santacruzamate A (CAY10683) Santacruzamate A (CAY10683) is a potent and selective HDAC inhibitor with IC50 of 119 pM for HDAC2, >3600-fold selectivity over other HDACs.	Thyroid, 2021, 10.1089/thy.2020.0948 Brain Res Bull, 2021, 175:213-223 Nat Cell Biol, 2020,	Effect of HDAC inhibitors on the expression of key cell cycle-related proteins in HepG2 and Huh7 cells. CAY: CAY10683
S8502	TMP195 TMP195 (TFMO 2) is a selective, first-in-class, class IIa HDAC inhibitor with IC50 of 300 nM in cell-based class IIa HDAC assays.	Clin Epigenetics, 2021, 13(1):187 Cell, 2020, S0092-8674(20)31394-5 Front Immunol, 2020, 3;11:36
S3944	Valproic acid (VPA) Valproic acid (VPA, 2-Propylvaleric Acid, Valproate) is a fatty acid with anticonvulsant properties used in the treatment of epilepsy. It is also a histone deacetylase (HDAC) inhibitor and is under investigation for treatment of HIV and various cancers. Valproic acid (VPA) induces autophagy and mitophagy by upregulation of BNIP3 and mitochondrial biogenesis by upregulating PGC-1α. Valproic acid activates Notch-1 signaling.	Front Immunol, 2021, 12:771453 Sci China Life Sci, 2021, 10.1007/s11427-020-1855-4 Anticancer Res, 2021, 41(2):687-697
S5810	UF010 UF010 is a class I HDAC-selective inhibitor with IC50 values of 0.5 nM, 0.1 nM, 0.06 nM, 1.5 nM, 9.1 nM and 15.3 nM for HDAC1, HDAC2, HDAC3, HDAC8, HDAC6 and HDAC10, respectively.
S7617	Tasquinimod Tasquinimod (ABR-215050) is an orally active antiangiogenic agent by allosterically inhibiting HDAC4 signalling. Phase 3.	Thyroid, 2021, 10.1089/thy.2020.0948 Int J Mol Sci, 2021, 22(3)E1011 Tuberculosis (Edinb), 2021, 127:102062	Western blot images suggested inhibition of HDAC4 increased the expression of NOX4 and MMP-9, and treatment with 10 μM SCM-198 reduced the raised levels of NOX4 and MMP-9.
S8743	SKLB-23bb SKLB-23bb is an orally bioavailable HDAC6-selective inhibitor with IC50 values under 100 nmol/L, against most of the cell lines checked. It also has microtubule-disrupting ability.
S9275	Isoguanosine Isoguanosine (Crotonoside) inhibits FLT3 and HDAC3/6 for the treatment of AML.Isoguanosine is a naturally occurring active isomer of guanosine that is found in the seeds of Croton tiglium.
S6548	NKL 22 NKL 22 is a selective inhibitor of HDAC with IC50 of 78 µM.
S5771	Sulforaphane Sulforaphane is a naturally occurring isothiocyanate derived from the consumption of cruciferous vegetables, such as broccoli, cabbage, and kale. It is an inducer of Nrf2. Sulforaphane is also an inhibitor of histone deacetylase (HDAC) and NF-κB. Sulforaphane increases heme oxygenase-1 (HO-1) and reduces the levels of reactive oxygen species (ROS). Sulforaphane induces cell cycle arrest and apoptosis.	Cell Death Discov, 2021, 7(1):375 Cell Commun Signal, 2021, 19(1):35 Int Immunopharmacol, 2019, 74:105646
S0864	ACY-775 ACY-775 is a potent and selective histone deacetylase 6 (HDAC6) inhibitor with IC50 of 7.5 nM.
S7726	BRD73954 BRD73954 is a potent and selective HDAC inhibitor with IC50 of 36 nM and 120 nM for HDAC6 and HDAC8, respectively.
S8464	Citarinostat (ACY-241) Citarinostat (ACY-241, HDAC-IN-2) is an orally available selective HDAC6 inhibitor with IC50 of 2.6 nM and 46 nM for HDAC6 and HDAC3, respectively. It has 13 to 18-fold selectivity towards HDAC6 in comparison to HDAC1-3.	Int J Mol Sci, 2021, 22(5)2592 Endocrinology, 2021, 162(5)bqab036 Oncogene, 2020, 39(13):2786-2796
S5905	Suberohydroxamic acid Suberohydroxamic acid (suberic bishydroxamic acid) is a competitive HDAC inhibitor with IC50 values of 0.25 and 0.3 μM for HDAC1 and HDAC3 respectively.
S8962	BRD3308 BRD3308 is a potant and highly selective inhibitor of HDAC3 with IC50 of 54 nM, 1.26 μM and 1.34 μM for HDAC3, HDAC1 and HDAC2, respectively. BRD3308 activates HIV-1 transcription. BRD3308 suppresses pancreatic β-cell apoptosis induced by inflammatory cytokines (glucolipotoxic stress) and increases functional insulin release.
S7593	Splitomicin Splitomicin is a selective NAD(+)-dependent histone deacetylase Sir2p inhibitor with IC50 of 60 μM, showing a higher activity in a cell-based assay.
S7278	HPOB HPOB is a potent, selective HDAC6 inhibitor with IC50 of 56 nM, >30-fold selectivity over other HDACs.	Tuberculosis (Edinb), 2021, 127:102062 Molecules, 2018, 23(5) Neurochem Int, 2016, 99:239-51	Effects of HPOB on GCs-induced apoptosis in PC12 and SH-SY5Y cells. (A) Effect of 48 h treatment with HPOB alone and (B) anti-apoptotic effect of HPOB pre-treatment for 24 h on Cort-induced apoptosis in PC12 cells. The results are expressed as the means ± SD of three independent experiments. ## indicates a significant difference from the control (P < 0.01). * indicates a significant difference from treatment with Cort alone at P < 0.05. ** indicates a significant difference from treatment with Cort alone at P < 0.01.
S7569	LMK-235 LMK-235 is a selective inhibitor of HDAC4 and HDAC5 with IC50 of 11.9 nM and 4.2 nM, respectively.	Thyroid, 2021, 10.1089/thy.2020.0948 Elife, 2021, 10e65654 Cancers (Basel), 2021, 13(15)3862	Upper panel: qPCR analysis of CDX2-negative HT29 cells treated with increasing concentrations of the DNMTi decitabine (1.25 μM, 2.5 μM, 5 μM, 10 μM) for 48 h and increasing concentrations of the HDAC4/5i LMK-235 (5 nM, 10 nM, 20 nM, 40 nM, 80 nM). Data were normalized to the HMBS housekeeping gene and are shown as n-fold regulation compared with DMSO-treated cells. MWU: ***p < 0.001, (n = 4). Lower panel: CDX2 Western blot analysis of the three highest concentrations for both compounds of HT29 cells treated as above. Total protein is shown as a loading control. Percentage indicates amount of protein normalized to respective DMSO controls
S5438	Biphenyl-4-sulfonyl chloride Biphenyl-4-sulfonyl chloride (p-Phenylbenzenesulfonyl, 4-Phenylbenzenesulfonyl, p-Biphenylsulfonyl) is a HDAC inhibitor with synthetic applications in palladium-catalyzed desulfitative C-arylation.
S7473	Nexturastat A Nexturastat A is a potent and selective HDAC6 inhibitor with IC50 of 5 nM, >190-fold selectivity over other HDACs.	Cell Prolif, 2021, 54(6):e13054 Cancer Discov, 2019, 9(4):526-545 Int J Mol Sci, 2019, 20(12)	HDAC inhibitors disrupt SS18-SSX/TLE1 co-localization. A significant decrease in detectable PLA signal following HDAC inhibition in SYO-1 cells A, B. is also confirmed by immunoprecipitation C. The decrease in PLA co-localization signal correlates with apoptosis induction by HDAC inhibitor FK228 in SYO-1 cells.
S1073	BML-210 (CAY10433) BML-210 (CAY10433) is a small molecule inhibitor of HDAC.BML-210 inhibits the HDAC4-VP16-driven reporter signal in a dose-dependent manner with an apparent IC50 of ∼5 µM.
S6738	TC-H 106 TC-H 106 (Pimelic Diphenylamide 106) is a slow, tight-binding inhibitor of class I histone deacetylases(HDAC) with Ki value of 148 nM, about 102 nM, 14 nM for HDAC1, HDAC2, HDAC3, respectively.
S2132	SR-4370 SR-4370 is a potent and selective inhibitor of class I HDACs with IC50 of 0.13 µM, 0.58 µM, 0.006 µM, 2.3 µM, 3.7 µM for HDAC 1, HDAC 2, HDAC 3, HDAC 8, HDAC 6, respectively.SR-4370 suppresses AR signaling and in vivo prostate tumor growth.
S8773	TH34 TH34 is a HDAC inhibitor that shows pronounced selectivity for HDACs 6, 8 and 10 over HDACs 1, 2 and 3. In a NanoBRET assay, TH34 strongly binds HDAC6, 8 and 10 with low-micromolar IC50 concentrations (HDAC6: 4.6 µM, HDAC8: 1.9 µM, HDAC10: 7.7 µM).
S8567	Tucidinostat (Chidamide) Tucidinostat (Chidamide, HBI-8000, CS-055) is a low nanomolar inhibitor of HDAC1, 2, 3, and 10, the HDAC isotypes well documented to be associated with the malignant phenotype with IC50 values of 95, 160, 67, 78 nM for HDAC1, 2, 3, 10 respectively.	Signal Transduct Target Ther, 2021, 6(1):333 Biomed Pharmacother, 2021, 138:111485 SLAS Discov, 2021, 24725552211002463
S6687	SIS17 SIS17 is a mammalian histone deacetylase 11 (HDAC 11)-specific inhibitor with IC50 of 0.83 μM. SIS17 inhibits the demyristoylation of HDAC11 substrate, serine hydroxymethyl transferase 2, without inhibiting other HDACs.
S2341	(-)-Parthenolide (-)-Parthenolide, an inhibitor of the Nuclear Factor-κB Pathway, specifically depletes HDAC1 protein without affecting other class I/II HDACs; Also promotes the ubiquitination of MDM2 and activates p53 cellular functions.	PLoS Genet, 2021, 17(11):e1009890 Theranostics, 2020, 10(22):9923-9936 J Biol Chem, 2020, 295(11):3576-3589	G. To evaluate effects of IKBKE/TBK1 inhibition on NF-κB signaling in Ewing, TC32 cells were incubated with CYT387 for six hours prior to stimulation with TNF-α (30 ng/mL). IκBα degradation was measured by harvesting TC32 cells thirty minutes after stimulation with TNF-α. TNF-α stimulation resulted in degradation of IκBα, and this effect was attenuated with CYT387 treatment. Parthenolide, an inhibitor of IκBα phosphorylation was used as a positive control. Similar effects of CYT387 activity were seen in HEK-293T cells which also express IKBKΕ. Nuclear extracts were prepared from TC32 cells harvested following forty-five minutes of TNF-α stimulation. Treatment with CYT387 resulted in decreased nuclear localization of NF-κB family proteins RelA/p65 and c-Rel. There was a modest impairment of p50 nuclear localization as compared to parthenolide and DMSO controls and no change in p52 nuclear localization. RelB (not shown) is not expressed in TC32 cells
S8495	WT161 WT161 is a potent, selective, and bioavailable HDAC6 inhibitor with IC50 values of 0.4 nM, 8.35 nM and 15.4 nM for HDAC6, HDAC1 and HDAC2, respectively; shown to have >100-fold selectivity over other HDACs. WT161 induces apoptosis.	Nat Metab, 2021, 3(1):75-89
S7596	CAY10603 CAY10603 (BML-281) is a potent and selective HDAC6 inhibitor with IC50 of 2 pM, >200-fold selectivity over other HDACs.	Neuro Oncol, 2021, 23(3):376-386 Cancer Res, 2021, canres.0955.2021 Nucleic Acids Res, 2020, 6;48(6):2912-2923	U87 and U251 cells were treated with HDAC6 selective inhibitors and the cells were harvested for subsequent western blot analysis.
S8648	ACY-738 ACY-738 inhibits HDAC6 with low nanomolar potency (IC50=1.7 nM) and a selectivity of 60- to 1500-fold over class I HDACs.	bioRxiv, 2020, 10.1101/2020.12.20.423672 J Biomed Sci, 2019, 26(1):27
S9262	Raddeanin A Raddeanin A (Raddeanin R3, NSC382873), a triterpenoid saponin from Anemone raddeana Regel, displays moderate inhibitory activity against histone deacetylases (HDACs) and has high antiangiogenic potency, antitumor activity.	Cell Mol Biol (Noisy-le-grand), 2020, 66(7):174-179
S1313	GSK3117391 GSK3117391 (GSK3117391A, HDAC-IN-3) is a potent histone deacetylase (HDAC) inhibitor.
S8769	Tinostamustine(EDO-S101) Tinostamustine(EDO-S101) is a first-in-class alkylating deacetylase inhibitor with IC50 values of 9 nM, 9 nM, 25 nM and 107 nM for HDAC1, HDAC2, HDAC3 and HDAC8 (Class 1 HDACs) respectively and 6 nM, 72 nM for HDAC6 and HDAC10 (Class II HDACs).
S7555	Domatinostat (4SC-202) Domatinostat (4SC-202) is a selective class I HDAC inhibitor with IC50 of 1.20 μM, 1.12 μM, and 0.57 μM for HDAC1, HDAC2, and HDAC3, respectively. Also displays inhibitory activity against Lysine specific demethylase 1 (LSD1). Phase 1.	Oral Dis, 2021, 10.1111/odi.13860 Cancers (Basel), 2020, 23;12(3) pii: E756 Cancer Res, 2018, 78(20):5731-5740
S7689	BG45 BG45 is a class I HDAC inhibitor with IC50 of 289 nM, 2.0 µM, 2.2 µM and >20 µM for HDAC3, HDAC1, HDAC2, and HDAC6 in cell-free assays, respectively.	Nucleic Acids Res, 2020, 6;48(6):2912-2923 Front Aging Neurosci, 2020, 12:619866 Anticancer Drugs, 2018, 29(1):61-74
S8323	ITSA-1 (ITSA1) ITSA-1 (ITSA1) is an HDAC activator via TSA suppression, but shows no activity towards other HDAC inhibitors.	Alzheimers Res Ther, 2021, 13(1):7 Cancer Res, 2018, 78(20):5731-5740

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S1047	Vorinostat (SAHA) Vorinostat (suberoylanilide hydroxamic acid, SAHA, MK0683, Zolinza) is an HDAC inhibitor with IC50 of ~10 nM in a cell-free assay. Vorinostat abrogates productive HPV-18 DNA amplification.	Adv Sci (Weinh), 2021, e2103360 Hepatology, 2021, 10.1002/hep.32245 Nat Commun, 2021, 12(1):4404	Western blot analysis of histone H3 acetylation in the spleen of untreated and vorinostat-treated hNF-E2 tg mice (n = 4 of each genotype).
S1053	Entinostat (MS-275) Entinostat (MS-275, SNDX-275) strongly inhibits HDAC1 and HDAC3 with IC50 of 0.51 μM and 1.7 μM in cell-free assays, compared with HDACs 4, 6, 8, and 10. Entinostat induces autophagy and apoptosis. Phase 3.	Science, 2021, 372(6537)eaba1786 Nat Chem Biol, 2021, 10.1038/s41589-021-00772-z Nat Commun, 2021, 12(1):2699	(A) U87 cells were cultured in the presence of DMSO, 1 uM MS-275 alone, 100 ng/ml IFN-λ1 alone, or both for the course of 4 d. Cell numbers were manually determined by hemacytometer counting at the indicated time points. (B, F) Cell proliferation of U87 cells or U87 spheroids in 3D culture with indicated treatment were performed using the WST-1 assay, which measures active cellular metabolism. (C) U87 spheroid formation in 3D culture was photographed at day 14 in culture (representative images are shown; 200x magnification). (D-E) Quantification of the relative sizes and numbers of U87 spheroids in (C). (G) Cell cycle analysis was performed in U87 cells with indicated treatment using propidium iodide staining. Numbers in the histogram show fractions (percent) of sub-G1, N, 2N, and polyploidy from left to right. (H) U87 cells with indicated treatment were stained with Annexin V-FITC and 7-AAD. Numbers indicate the percentage of FITC-positive cells (upper left quadrant). FITC, fluorescein isothiocyanate; 7-AAD, 7-Aminoactinomycin. In all panels, data represent the mean and SEM of at least three experiments.
S1030	Panobinostat (LBH589) Panobinostat (LBH589, NVP-LBH589) is a novel broad-spectrum HDAC inhibitor with IC50 of 5 nM in a cell-free assay. Panobinostat (LBH589) induces autophagy and apoptosis. Panobinostat effectively disrupts HIV latency in vivo. Phase 3.	Nat Med, 2021, 10.1038/s41591-020-01212-6 Cell Stem Cell, 2021, 28(1):48-62.e6 Hepatology, 2021, 10.1002/hep.32245	LSD1 and HDAC inhibitors exhibit synergistic growth inhibition. Cells were simultaneously treated with pargyline or HDAC inhibitors for 48 h.
S1045	Trichostatin A (TSA) Trichostatin A (TSA) is an HDAC inhibitor with IC50 of ~1.8 nM in cell-free assays.	Nature, 2021, 10.1038/s41586-021-04116-8 Mol Cell, 2021, S1097-2765(21)00051-4 Hepatology, 2021, 10.1002/hep.32245	HCT116 p53 null cells were treated with different HDACIs (1 μM TSA, 5 μM M344, 1 μM MS-275, 5 mM But, 10 mM VPA) for 24 h, and their expression of GRP78, PERK-eIF2α axis and ATF4, ATF3, CHOP and DR5 proteins.
S1122	Mocetinostat (MGCD0103) Mocetinostat (MGCD0103, MG0103) is a potent HDAC inhibitor with most potency for HDAC1 with IC50 of 0.15 μM in a cell-free assay, 2- to 10- fold selectivity against HDAC2, 3, and 11, and no activity to HDAC4, 5, 6, 7, and 8. Mocetinostat (MGCD0103) induces apoptosis and autophagy. Phase 2.	Cancer Cell, 2021, S1535-6108(20)30662-0 Nat Commun, 2021, 12(1):5056 Cancers (Basel), 2021, 13(15)3862	Comparison of MCAS ovarian cancer cells harboring control and CtBP2 knockdown shRNAs for sensitivity to chemotherapeutic agents. For each cell line, the MTT reading of the untreated cells was assigned as 100%. HDAC inhibitors: (a) Trichostatin A; (b) Vorinostat; (c) Belinostat; (d) MGCD0103; (e) valproic acid; and (f ) carboplatin, a non-HDAC inhibitor.
S3592^新	4-Phenylbutyric acid (4-PBA) 4-Phenylbutyric acid (4-PBA, Benzenebutyric acid) is a histone deacetylase (HDAC) inhibitor and a key epigenetic inducer of anti-HCV hepatic hepcidin. 4-Phenylbutyric acid inhibits LPS-induced inflammation through regulating endoplasmic-reticulum (ER) stress and autophagy in acute lung injury models.	Toxicol In Vitro, 2021, 77:105249 Nan Fang Yi Ke Da Xue Xue Bao, 2021, 41(5):702-709 Part Fibre Toxicol, 2020, 17(1):50
S1085	Belinostat (PXD101) Belinostat (PXD101, NSC726630, PX-105684) is a novel HDAC inhibitor with IC50 of 27 nM in a cell-free assay, with activity demonstrated in cisplatin-resistant tumors. Belinostat (PXD101) induces autophagy.	Adv Sci (Weinh), 2021, e2103360 Hepatology, 2021, 10.1002/hep.32245 Nat Commun, 2021, 12(1):117	Inhibition of LSD1 activity by HDAC inhibitors. a MDA-MB-231 and MDA-MB-468 cells were exposed to indicated HDAC inhibitors for 24 h.
S3020	Romidepsin (FK228, Depsipeptide) Romidepsin (FK228, Depsipeptide, FR 901228, NSC 630176) is a potent HDAC1 and HDAC2 inhibitor with IC50 of 36 nM and 47 nM in cell-free assays, respectively. Romidepsin (FK228/depsipeptide) controls growth and induces apoptosis in neuroblastoma tumor cells.	Hepatology, 2021, 10.1002/hep.32245 Nat Commun, 2021, 12(1):7213 Nucleic Acids Res, 2021, 49(4):2390-2399	Effects of combination of bort/romidepsin on HDAC6 inhibition and activation of ER stress signaling. HA cells were treated with combination of 15 nM bortezomib and 5 nM romidepsin or either drug alone for 24 hr. Expression of CHOP/GADD153 (green signals) and cleaved PARP (red signals) was detected by immunoﬂuorescent staining. DAPI (blue signals) stained the cell nuclei.
S1484	MC1568 MC1568 is a selective HDAC inhibitor for maize HD1-A with IC50 of 100 nM in a cell-free assay. It is 34-fold more selective for HD1-A than HD1-B.	Hepatology, 2021, 10.1002/hep.32245 Cells, 2021, 10(11)3249 Front Cell Dev Biol, 2021, 9:771466	HDAC4 and OA1 expression correlate inversely during starvation, and HDAC4 inhibition or knockdown leads to OA1 transgene up-regulation. Quantification of OA1 mRNA expression by real-time PCR in HeLa-OA1myc cells at the indicated times of incubation with MC1568 (class II HDACi). Data are expressed as the fold change compared with the amount of the OA1 mRNA in mock conditions at each time point.
S2627	Tubastatin A HCl Tubastatin A HCl (TSA) is a potent and selective HDAC6 inhibitor with IC50 of 15 nM in a cell-free assay. It is selective (1000-fold more) against all other isozymes except HDAC8 (57-fold more).	Sci Adv, 2021, 7(49):eabk0490 Sci Adv, 2021, 7(49):eabk0490 Thyroid, 2021, 10.1089/thy.2020.0948	Control and MEC17 KD macrophages (RAW264.7) were treated with TBSA or DMSO for 12 hours followed by LPS treatment for indicated time. p38 phosphorylation were determined by immuno-blotting.
S2170	Givinostat (ITF2357) Givinostat (ITF2357) is a potent HDAC inhibitor for maize HD2, HD1B and HD1A with IC50 of 10 nM, 7.5 nM and 16 nM in cell-free assays. Phase 2.	Elife, 2021, 10e68714 PLoS One, 2021, 16(11):e0260633 Cancers (Basel), 2020, 12(11)E3161	Cells were treated with indicated HDAC inhibitors for 4 days and then cultured without drug for an additional 4 days. On day 8, HDAC inhibitors were added back to the culture for another 4 days. The percentage of GFP-positive cells was measured at days 4, 8 and 12. The concentrations of HDAC inhibitors used for the experiments are as follows: vorinostat, 1 uM; TsA, 200 nM; oxamflatin, 1 uM; scriptaid, 1 uM; belinostat, 200 nM; and givinostat, 200 nM. The fraction of GFP-positive cells was measured by flow cytometry at the indicated timepoints. The effect of HDAC inhibitors or anti-CD3 plus anti-CD28 antibodies over time was normalized to the effect of anti-CD3 plus anti-CD28 antibodies at day 2. Error bars represent SEM, n = 3. APHA, 3-(1-methyl-4-phenylacetyl-1H-2-pyrrolyl)-N-hydroxypropenamide.
S1095	Dacinostat (LAQ824) Dacinostat (LAQ824, NVP-LAQ824) is a novel HDAC inhibitor with IC50 of 32 nM and is known to activate the p21 promoter.	ACS Omega, 2019, 4(22):19895-19904 Cancer Res, 2018, 78(20):5731-5740 Oncogene, 2018, 37(50):6414-6424	Class I selective HDACi have the highest INS-1 rescue potential . INS-1 cells were monitored using the real-time xCELLigence system h and the impedance (cell adhesion) was measured as a surrogate of cell viability (cell index) as described in the Methods. (a ) The impedance of duplicates of control (green line), cytokine-exposed (red line) and cytokine+ITF-J-exposed INS-1 cells (blue line) was followed from the start of exposure (indicated by the arrow). Heat maps of 13 different ITF HDAC inhibitor compounds ( b )orsix different commercial HDAC inhibitor compounds (c) were made based on their IC50 values towards selected HDACs . The HDACi inhibitors are ranked after rescue potential according to ESM Tables 1, 2 .( c) Values are corrected for differences in potency since they varied from 33.3 (CI-994) to 0.041 (LAQ824). (d ) Colour code for both heat maps: low IC50 values coloured red, intermediate IC50 values coloured black and high IC50 values coloured blue; grey indicates undetermined IC50.
S1194	CUDC-101 CUDC-101 is a potent multi-targeted inhibitor against HDAC, EGFR and HER2 with IC50 of 4.4 nM, 2.4 nM, and 15.7 nM, and inhibits class I/II HDACs, but not class III, Sir-type HDACs. Phase 1.	Cancer Sci, 2020, 112(1):133-143 Anticancer Drugs, 2020, 31(2):158-168 NPJ Breast Cancer, 2020, 6:30	(a) Decay-corrected microPET/CT scan of MDA-MB-231 tumor bearing mice (n = 4) at 2, 4, and 24 h after i.v. injection of [64Cu]7. The image obtained with coinjection of CUDC-101 (20 mg/kg body weight) is shown for a 24 h blockade. Tumors are indicated by arrows. (b) Decay-corrected region-of interest (ROI) analysis on microPET images of the tumor uptake of [64Cu]7 with or without coinjection of CUDC-101 (20 mg/kg body weight). , P < 0.05; *, P < 0.01.
S1096	Quisinostat (JNJ-26481585) 2HCl Quisinostat (JNJ-26481585) 2HCl is a novel second-generation HDAC inhibitor with highest potency for HDAC1 with IC50 of 0.11 nM in a cell-free assay, modest potent to HDACs 2, 4, 10, and 11; greater than 30-fold selectivity against HDACs 3, 5, 8, and 9 and lowest potency to HDACs 6 and 7. Phase 2.	Nat Commun, 2021, 12(1):5404 Nucleic Acids Res, 2021, 49(4):2390-2399 Neuro Oncol, 2021, 23(3):376-386	WT ESCs were treated with varying concentrations of the HDAC1 specific inhibitor JNJ-26481585 for 24 h. Lysates were collected for ChIP experiments, and a H3K27ac antibody was used for immunoprecipitation (IP). qPCR was performed using primers specific for Hoxa1 RARE2. ChIP with an IgG antibody (negative control) is included in each panel. Error bars represent standard error of independent experiments where n = 3 for biological repeats. *, p < 0.05.
S1515	Pracinostat (SB939) Pracinostat (SB939) is a potent pan-HDAC inhibitor with IC50 of 40-140 nM with exception for HDAC6. It has no activity against the class III isoenzyme SIRT I. Pracinostat (SB939) induces apoptosis in tumor cells. Phase 2.	Cancer Lett, 2021, 521:268-280 Front Immunol, 2021, 12:771453 Cell, 2020, S0092-8674(20)31394-5	Hyperacetylation of P. falciparum proteins by SB939. Synchronous 3D7 trophozoite-stage P. falciparum parasites were treated with 50 or 500 nM chloroquine (CQ), SAHA, or SB939 or with vehicle only (control; 0.05% DMSO) for 3 h. Following saponin lysis, parasite protein lysates were prepared and SDS-PAGE and Western blotting carried out using anti-acetyl H4 or anti-pan-acetyl lysine (K103) antibodies. Coomassie blue staining was carried out as a loading control.
S2012	PCI-34051 PCI-34051 is a potent and specific HDAC8 inhibitor with IC50 of 10 nM in a cell-free assay. It has greater than 200-fold selectivity over HDAC1 and 6, more than 1000-fold selectivity over HDAC2, 3, and 10. PCI-34051 induces caspase-dependent apoptosis.	Thyroid, 2021, 10.1089/thy.2020.0948 Tuberculosis (Edinb), 2021, 127:102062 Nat Commun, 2020, 11(1):5783	(d) Effects of HDAC8 activity on ISO-induced augmentation of apoptosis and TIPRL expression. H1299 cells were sequentially treated with 10 μm PCI-34051 for 24 h, ISO for 30 min and 50 μM cisplatin for 48 h before the western blot analysis.
S1422	Droxinostat Droxinostat (NS 41080) is a selective inhibitor of HDAC, mostly for HDACs 6 and 8 with IC50 of 2.47 μM and 1.46 μM, greater than 8-fold selective against HDAC3 and no inhibition to HDAC1, 2, 4, 5, 7, 9, and 10.	Exp Ther Med, 2021, 21(5):515 Cancer Sci, 2020, 111(7):2374-2384 Cancer Res, 2018, 78(20):5731-5740	Chemical inhibition of HDAC3, -6, and -8 with the selective HDAC inhibitor Droxinostat (2 uM) resulted in a significant increase in the percent of 2D10 cells expressing GFP in cells that had been depleted of HDAC3 but not HDAC1 or -2. (*p<0.05).
S1090	Abexinostat (PCI-24781) Abexinostat (PCI-24781, CRA-024781) is a novel pan-HDAC inhibitor mostly targeting HDAC1 with K_i of 7 nM, modest potent to HDACs 2, 3, 6, and 10 and greater than 40-fold selectivity against HDAC8. Phase 1/2.	Nucleic Acids Res, 2021, 49(4):2390-2399 Cancers (Basel), 2021, 13(17)4476 Clin Epigenetics, 2021, 13(1):187	Class I selective HDACi have the highest INS-1 rescue potential . INS-1 cells were monitored using the real-time xCELLigence system h and the impedance (cell adhesion) was measured as a surrogate of cell viability (cell index) as described in the Methods. (a ) The impedance of duplicates of control (green line), cytokine-exposed (red line) and cytokine+ITF-J-exposed INS-1 cells (blue line) was followed from the start of exposure (indicated by the arrow). Heat maps of 13 different ITF HDAC inhibitor compounds ( b )orsix different commercial HDAC inhibitor compounds (c) were made based on their IC50 values towards selected HDACs . The HDACi inhibitors are ranked after rescue potential according to ESM Tables 1, 2 .( c) Values are corrected for differences in potency since they varied from 33.3 (CI-994) to 0.041 (LAQ824). (d ) Colour code for both heat maps: low IC50 values coloured red, intermediate IC50 values coloured black and high IC50 values coloured blue; grey indicates undetermined IC50.
S7229	RGFP966 RGFP966 is an HDAC3 inhibitor with IC50 of 0.08 μM in cell-free assay, exhibits > 200-fold selectivity over other HDAC.	Thyroid, 2021, 10.1089/thy.2020.0948 Signal Transduct Target Ther, 2021, 6(1):333 FASEB J, 2021, 35(11):e22009	THP-1 cells were treated with indicated concentrations of Ara-C and/or RGFP966 for 24 h, and lysates were immunoblotted for p-AKT473, AKT and γH2AX.
S2244	AR-42 AR-42 (HDAC-42) is an HDAC inhibitor with IC50 of 30 nM. Phase 1.	Nat Commun, 2021, 12(1):256 Cancer Cell, 2020, 13;37(4):599-617 e7 J Mater Chem B, 2020, 8(37):8558-8572	One- to 2-month-old mice of both genotypes showed an increase in H3K4me3 (n = 5 to 6 per group) associated with a dose-dependent increase in neurogenesis in Kmt2d+/βGeo mice (monitored by normalized DCX expression) (n = 4 to 6 per group) upon treatment with the HDACi AR-42. There was no difference in either H3K4me3 or neurogenesis between Kmt2d+/βGeo and Kmt2d+/+ animals at a dose of 10 mg/kg per day.
S8001	Ricolinostat (ACY-1215) Ricolinostat (ACY-1215, Rocilinostat) is a selective HDAC6 inhibitor with IC50 of 5 nM in a cell-free assay. It is >10-fold more selective for HDAC6 than HDAC1/2/3 (class I HDACs) with slight activity against HDAC8, minimal activity against HDAC4/5/7/9/11, Sirtuin1, and Sirtuin2. Ricolinostat (ACY-1215) suppresses cell proliferation and promotes apoptosis. Phase 2.	Cancer Res, 2021, 81(20):5325-5335 Blood Cancer J, 2021, 11(12):194 Elife, 2021, 10e63810	(a) Representative images from hTERT RPE-1 cells transiently transfected with siControl (siC), treated with vehicle (DMSO), alisertib (MLN8237) or rocilinostat (ACY1215) at the time of serum withdrawal for 48 h. Ciliation monitored by immunofluorescent staining using acetylated α-tubulin (cilia marker) and pericentrin (basal body marker). Nuclei counterstained using DAPI. Highlighted boxes show magnified cilia. Scale bar, 3 μM.
S1168	Valproic Acid (NSC 93819) sodium salt Valproic Acid sodium salt (NSC 93819, Sodium valproate) is a HDAC inhibitor by selectively inducing proteasomal degradation of HDAC2, used in the treatment of epilepsy, bipolar disorder and prevention of migraine headaches. Valproic acid induces Notch1 signaling in small cell lung cancer (SCLC) cells. Valproic acid is under investigation for treatment of HIV and various cancers. Valproic acid (VPA) induces autophagy and mitophagy by upregulation of BNIP3 and mitochondrial biogenesis by upregulating PGC-1α.	Pigment Cell Melanoma Res, 2021, 10.1111/pcmr.13014 Front Immunol, 2021, 12:771453 Front Oncol, 2021, 11:723966	Western blot analysis of Acetylated Histone and Histone. 0-10μM sodium valproate was added.
S2818	Tacedinaline (CI994) Tacedinaline (CI994, PD-123654, GOE-5549, Acetyldinaline) is a selective class I HDAC inhibitor with IC50 of 0.9, 0.9, 1.2, and >20 μM for human HDAC 1, 2, 3, and 8, respectively. Phase 3.	Front Oncol, 2021, 11:648023 Int J Mol Sci, 2021, 22(9)4559 Tuberculosis (Edinb), 2021, 127:102062	A, 5×10⁶ HeLa, A549, 293T, and H1299 cells were seeded in 10-cm cell culture dishes on day 0 and treated with dimethyl sulfoxide, 10 μM CI994, or 1 μM RGFP966 for 12 h. Cell lysates were collected for Western blotting analysis of Apaf-1 and -actin.
S2759	Fimepinostat (CUDC-907) CUDC-907 is a dual PI3K and HDAC inhibitor for PI3Kα and HDAC1/2/3/10 with IC50 of 19 nM and 1.7 nM/5 nM/1.8 nM/2.8 nM, respectively. CUDC-907 induces cell cycle arrest and apoptosis in breast cancer cells. Phase 1.	Blood Cancer J, 2021, 11(6):111 Cancer Chemother Pharmacol, 2021, 10.1007/s00280-020-04210-0 Exp Hematol Oncol, 2021, 10(1):19	Representative Oil Red O staining of lipid-filled mature adipocytes on day 7 for uninduced cells (a), adipocyteinduced hMSCs exposed to the vehicle control (b) or CUDC-907-treated cells (500 nM) (c). Nile red staining (d and e) on day 7 of post-adipocytic induction in hMSCs and after exposure to CUDC-907. Images were captured at ×20 magnification using the FLoid Cell Imaging Station. The level of Nile red staining was quantified using the Molecular Devices M5 Microplate Reader (f). Data are presented as mean ± S.E (n = 16) from three independent experiments, ***P <0.0005.
S1999	Sodium butyrate Sodium butyrate (NaB, Butanoic acid sodium salt), sodium salt of butyric acid, is a histone deacetylase inhibitor and competitively binds to the zinc sites of class I and II histone deacetylases (HDACs). Sodium butyrate (NaB) inhibits cell cycle progression, promotes differentiation, and induces apoptosis and autophagy in several types of cancer cells.	Cell Mol Life Sci, 2021, 10.1007/s00018-021-03883-x Front Cell Dev Biol, 2021, 9:662868 Int J Mol Sci, 2020, 21(2)	U87 cells were cultured with DMSO or 10 µM 5azadC for 72 h. For the latter, 1 µM Trichostatin A (TSA), 10 mM sodium butyrate (NaBu), 5 mM nicotinamide (NAM), or 0.5 µM apicidin were added in the last 24 h. IFNLR1 expression was determined by RT-qPCR.
S1848	Curcumin Curcumin (Diferuloylmethane, Natural Yellow 3, Turmeric yellow) is the principal curcuminoid of the popular Indian spice turmeric, which is a member of the ginger family (Zingiberaceae). It is an inhibitor of p300 histone acetylatransferase（IC50~25 μM）and Histone deacetylase (HDAC); activates Nrf2 pathway and supresses the activation of NF-κB. Curcumin induces mitophagy, autophagy, apoptosis, and cell cycle arrest with antitumor activity. Curcumin reduces renal damage associated with rhabdomyolysis by decreasing ferroptosis-mediated cell death. Curcumin exhibits anti-infective properties against various human pathogens like the influenza virus, hepatitis C virus, HIV and so on.	Adv Sci (Weinh), 2021, e2103360 Front Immunol, 2021, 12:656242 Aging (Albany NY), 2021, 13(10):13968-14000
S2779	M344 M344 is a potent HDAC inhibitor with IC50 of 100 nM and able to induce cell differentiation.	Nat Commun, 2020, 29;11(1):2086 Cell Syst, 2019, 8(2):97-108 Front Cell Neurosci, 2019, 13:468	HCT116 p53 null cells were treated with different HDACIs (1 μM TSA, 5 μM M344, 1 μM MS-275, 5 mM But, 10 mM VPA) for 24 h. ATF4, ATF3, CHOP and DR5 proteins were measured by Western blot.
S2239	Tubacin Tubacin is a highly potent and selective, reversible, cell-permeable HDAC6 inhibitor with an IC50 of 4 nM in a cell-free assay, approximately 350-fold selectivity over HDAC1. Tubacin reduces the replication of the Japanese Encephalitis Virus via the decrease of viral RNA synthesis.	Signal Transduct Target Ther, 2021, 6(1):333 STAR Protoc, 2021, 2(3):100674 Cancers (Basel), 2020, 12(11)E3172	Verification of Hdac6 deletion in knockout MEFs. Expression of HDAC6 and acetylation of tubulin were analyzed by immunoblotting.
S7292	RG2833 (RGFP109) RG2833 (RGFP109) is a brain-penetrant HDAC inhibitor with IC50 of 60 nM and 50 nM for HDAC1 and HDAC3 in cell-free assays, respectively.	Front Mol Neurosci, 2021, 14:616886 Nat Metab, 2021, 3(1):75-89 Theranostics, 2020, 10(21):9644-9662	The cells were treated with 1 μM RG2833 (HDAC1/3 inhibitor), 2 μM RGFP966 (HDAC3 inhibitor), 1 μM TSA (pan-HDAC inhibitor), or vehicle for 16 h in serum-free medium. Cell lysates were analysed by Western blotting for expression of SREBP-2 activated fragment, HMG-CoA reductase and APP. Shown are representative blots and quantifications with means ± SEM of the indicated number of independent experiments performed in duplicate. p < 0.05; *p < 0.01; n.s., not significant in one-sample t-test.
S2693	Resminostat Resminostat (RAS2410) dose-dependently and selectively inhibits HDAC1/3/6 with IC50 of 42.5 nM/50.1 nM/71.8 nM, less potent to HDAC8 with IC50 of 877 nM.	J Cancer, 2020, 6;11(14):4059-4072 Oncol Lett, 2020, 20(1):533-540 Biochemistry, 2019, 58(49):4912-4924	Assessment of apoptosis by flow cytometry. (A) SCC25 cells were treated with 2.5 μM and 5 μM resminostat. *Significant induction of cell death.
S1703	Divalproex Sodium Divalproex Sodium, consisting of a compound of sodium valproate and valproic acid in a 1:1 molar relationship in an enteric coated form, is a HDAC inhibitor, used in the treatment for epilepsy.	CNS Neurosci Ther, 2018, 24(5):404-411	Divalproex sodium increases the level of acetylated histone H3 level in ataxin-3-transfected HEK293 cells. Normal (15CAG) or expanded (77CAG) ataxin-3-transfected cells were treated with divalproex sodium (Selleck chemical, 0.3 mmol/L in DMSO, (+)) or with DMSO alone (−) 48 h after transfection. The cells were treated with divalproex sodium or DMSO over 6, 12, and 24 h. The Western blot was probed with antiacetylated histone H3, antihistone H3, and antiataxin-3. Antibodies include antihistone H3 and antiataxin-3 are used as controls. The x-axis shows the different treatment group. The y-axis represents the acetylated histone H3 values normalized to histone H3. Error bars represent the standard error of the mean. Data represent three independent experiments (n = 3). The data with a normal distribution were analyzed with Student’s t-test. *P < 0.05
S8043	Scriptaid Scriptaid (GCK 1026) is an inhibitor of HDAC. It shows a greater effect on acetylated H4 than H3.	J Appl Physiol (1985), 2020, 128(2):276-285 Nat Biotechnol, 2019, 10.1038/s41587-019-0372-z Pharmacol Res, 2019, 146:104281	The relative expression of Oct4, Nanog, Klf4 and Sox2 at the blastocyst stage in ICSI-, ROSI- and ROSI + incubation of zygotes with 250 nM Scriptaid for 10 h (ROSI-S)-derived embryos. Five blastocysts in each pool were examined to obtain the data set in each column. Q-PCR analysis was performed in triplicate. Different letters indicate significant differences between values (P < 0.05).
S4125	Sodium Phenylbutyrate Sodium phenylbutyrate is a salt of 4-phenylbutyrate (4-PBA) or 4-phenylbutyric acid.Sodium phenylbutyrate is a histone deacetylase inhibitor, used to treat urea cycle disorders.	Cell Death Dis, 2021, 12(11):1016 Am J Cancer Res, 2021, 11(3):691-711 Acta Pharmacol Sin, 2021, 10.1038/s41401-021-00700-w	Representative images and quantitative analysis results of the transwell experiment. Notes: (A) Results of migration assay for DU145. (B) Results of invasion assay for DU145. (C) Results of migration assay for PC3. (D) Results of invasion assay for PC3. “*” Means significantly different from control group, P<0.05. Abbreviation: SPB, sodium phenylbutyrate.
S8049	Tubastatin A Tubastatin A is a potent and selective HDAC6 inhibitor with IC50 of 15 nM in a cell-free assay. It is selective against all the other isozymes (1000-fold) except HDAC8 (57-fold). Tubastatin A promotes autophagy and increases apoptosis.	Sci Adv, 2021, 7(49):eabk0490 Sci Adv, 2021, 7(49):eabk0490 Thyroid, 2021, 10.1089/thy.2020.0948	Control and MEC17 KD macrophages (RAW264.7) were treated with TBSA or DMSO for 12 hours followed by LPS treatment for indicated time. p38 phosphorylation were determined by immuno-blotting.
S0709	Tubastatin A TFA Tubastatin A TFA (Tubastatin A trifluoroacetate salt) is a potent and selective HDAC6 inhibitor with IC50 of 15 nM in a cell-free assay. It is selective against all the other isozymes (1000-fold) except HDAC8 (57-fold). Tubastatin A promotes autophagy and increases apoptosis.
S3981	Sinapinic Acid Sinapinic acid (Sinapic acid) is a small naturally occurring hydroxycinnamic acid which belongs to phenylpropanoid family and commonly used as matrix in MALDI mass spectrometry. Sinapinic acid (Sinapic acid) acts as an inhibitor of HDAC, with IC50 of 2.27 mM, and also inhibits ACE-I activity.
S7324	TMP269 TMP269 is a potent, selective class IIa HDAC inhibitor with IC50 of 157 nM, 97 nM, 43 nM and 23 nM for HDAC4, HDAC5, HDAC7 and HDAC9, respectively.	Cell Death Dis, 2021, 12(6):501 Signal Transduct Target Ther, 2021, 6(1):333 Cells, 2021, 10(11)3249	Staining of live (calcein-AM, green) and dead (PI, red) UCC cells after 72 h of treatment with TMP269. Data shown are a representative experiment of a set of 3
S7595	Santacruzamate A (CAY10683) Santacruzamate A (CAY10683) is a potent and selective HDAC inhibitor with IC50 of 119 pM for HDAC2, >3600-fold selectivity over other HDACs.	Thyroid, 2021, 10.1089/thy.2020.0948 Brain Res Bull, 2021, 175:213-223 Nat Cell Biol, 2020,	Effect of HDAC inhibitors on the expression of key cell cycle-related proteins in HepG2 and Huh7 cells. CAY: CAY10683
S8502	TMP195 TMP195 (TFMO 2) is a selective, first-in-class, class IIa HDAC inhibitor with IC50 of 300 nM in cell-based class IIa HDAC assays.	Clin Epigenetics, 2021, 13(1):187 Cell, 2020, S0092-8674(20)31394-5 Front Immunol, 2020, 3;11:36
S3944	Valproic acid (VPA) Valproic acid (VPA, 2-Propylvaleric Acid, Valproate) is a fatty acid with anticonvulsant properties used in the treatment of epilepsy. It is also a histone deacetylase (HDAC) inhibitor and is under investigation for treatment of HIV and various cancers. Valproic acid (VPA) induces autophagy and mitophagy by upregulation of BNIP3 and mitochondrial biogenesis by upregulating PGC-1α. Valproic acid activates Notch-1 signaling.	Front Immunol, 2021, 12:771453 Sci China Life Sci, 2021, 10.1007/s11427-020-1855-4 Anticancer Res, 2021, 41(2):687-697
S5810	UF010 UF010 is a class I HDAC-selective inhibitor with IC50 values of 0.5 nM, 0.1 nM, 0.06 nM, 1.5 nM, 9.1 nM and 15.3 nM for HDAC1, HDAC2, HDAC3, HDAC8, HDAC6 and HDAC10, respectively.
S7617	Tasquinimod Tasquinimod (ABR-215050) is an orally active antiangiogenic agent by allosterically inhibiting HDAC4 signalling. Phase 3.	Thyroid, 2021, 10.1089/thy.2020.0948 Int J Mol Sci, 2021, 22(3)E1011 Tuberculosis (Edinb), 2021, 127:102062	Western blot images suggested inhibition of HDAC4 increased the expression of NOX4 and MMP-9, and treatment with 10 μM SCM-198 reduced the raised levels of NOX4 and MMP-9.
S8743	SKLB-23bb SKLB-23bb is an orally bioavailable HDAC6-selective inhibitor with IC50 values under 100 nmol/L, against most of the cell lines checked. It also has microtubule-disrupting ability.
S9275	Isoguanosine Isoguanosine (Crotonoside) inhibits FLT3 and HDAC3/6 for the treatment of AML.Isoguanosine is a naturally occurring active isomer of guanosine that is found in the seeds of Croton tiglium.
S6548	NKL 22 NKL 22 is a selective inhibitor of HDAC with IC50 of 78 µM.
S5771	Sulforaphane Sulforaphane is a naturally occurring isothiocyanate derived from the consumption of cruciferous vegetables, such as broccoli, cabbage, and kale. It is an inducer of Nrf2. Sulforaphane is also an inhibitor of histone deacetylase (HDAC) and NF-κB. Sulforaphane increases heme oxygenase-1 (HO-1) and reduces the levels of reactive oxygen species (ROS). Sulforaphane induces cell cycle arrest and apoptosis.	Cell Death Discov, 2021, 7(1):375 Cell Commun Signal, 2021, 19(1):35 Int Immunopharmacol, 2019, 74:105646
S0864	ACY-775 ACY-775 is a potent and selective histone deacetylase 6 (HDAC6) inhibitor with IC50 of 7.5 nM.
S7726	BRD73954 BRD73954 is a potent and selective HDAC inhibitor with IC50 of 36 nM and 120 nM for HDAC6 and HDAC8, respectively.
S8464	Citarinostat (ACY-241) Citarinostat (ACY-241, HDAC-IN-2) is an orally available selective HDAC6 inhibitor with IC50 of 2.6 nM and 46 nM for HDAC6 and HDAC3, respectively. It has 13 to 18-fold selectivity towards HDAC6 in comparison to HDAC1-3.	Int J Mol Sci, 2021, 22(5)2592 Endocrinology, 2021, 162(5)bqab036 Oncogene, 2020, 39(13):2786-2796
S5905	Suberohydroxamic acid Suberohydroxamic acid (suberic bishydroxamic acid) is a competitive HDAC inhibitor with IC50 values of 0.25 and 0.3 μM for HDAC1 and HDAC3 respectively.
S8962	BRD3308 BRD3308 is a potant and highly selective inhibitor of HDAC3 with IC50 of 54 nM, 1.26 μM and 1.34 μM for HDAC3, HDAC1 and HDAC2, respectively. BRD3308 activates HIV-1 transcription. BRD3308 suppresses pancreatic β-cell apoptosis induced by inflammatory cytokines (glucolipotoxic stress) and increases functional insulin release.
S7593	Splitomicin Splitomicin is a selective NAD(+)-dependent histone deacetylase Sir2p inhibitor with IC50 of 60 μM, showing a higher activity in a cell-based assay.
S7278	HPOB HPOB is a potent, selective HDAC6 inhibitor with IC50 of 56 nM, >30-fold selectivity over other HDACs.	Tuberculosis (Edinb), 2021, 127:102062 Molecules, 2018, 23(5) Neurochem Int, 2016, 99:239-51	Effects of HPOB on GCs-induced apoptosis in PC12 and SH-SY5Y cells. (A) Effect of 48 h treatment with HPOB alone and (B) anti-apoptotic effect of HPOB pre-treatment for 24 h on Cort-induced apoptosis in PC12 cells. The results are expressed as the means ± SD of three independent experiments. ## indicates a significant difference from the control (P < 0.01). * indicates a significant difference from treatment with Cort alone at P < 0.05. ** indicates a significant difference from treatment with Cort alone at P < 0.01.
S7569	LMK-235 LMK-235 is a selective inhibitor of HDAC4 and HDAC5 with IC50 of 11.9 nM and 4.2 nM, respectively.	Thyroid, 2021, 10.1089/thy.2020.0948 Elife, 2021, 10e65654 Cancers (Basel), 2021, 13(15)3862	Upper panel: qPCR analysis of CDX2-negative HT29 cells treated with increasing concentrations of the DNMTi decitabine (1.25 μM, 2.5 μM, 5 μM, 10 μM) for 48 h and increasing concentrations of the HDAC4/5i LMK-235 (5 nM, 10 nM, 20 nM, 40 nM, 80 nM). Data were normalized to the HMBS housekeeping gene and are shown as n-fold regulation compared with DMSO-treated cells. MWU: ***p < 0.001, (n = 4). Lower panel: CDX2 Western blot analysis of the three highest concentrations for both compounds of HT29 cells treated as above. Total protein is shown as a loading control. Percentage indicates amount of protein normalized to respective DMSO controls
S5438	Biphenyl-4-sulfonyl chloride Biphenyl-4-sulfonyl chloride (p-Phenylbenzenesulfonyl, 4-Phenylbenzenesulfonyl, p-Biphenylsulfonyl) is a HDAC inhibitor with synthetic applications in palladium-catalyzed desulfitative C-arylation.
S7473	Nexturastat A Nexturastat A is a potent and selective HDAC6 inhibitor with IC50 of 5 nM, >190-fold selectivity over other HDACs.	Cell Prolif, 2021, 54(6):e13054 Cancer Discov, 2019, 9(4):526-545 Int J Mol Sci, 2019, 20(12)	HDAC inhibitors disrupt SS18-SSX/TLE1 co-localization. A significant decrease in detectable PLA signal following HDAC inhibition in SYO-1 cells A, B. is also confirmed by immunoprecipitation C. The decrease in PLA co-localization signal correlates with apoptosis induction by HDAC inhibitor FK228 in SYO-1 cells.
S1073	BML-210 (CAY10433) BML-210 (CAY10433) is a small molecule inhibitor of HDAC.BML-210 inhibits the HDAC4-VP16-driven reporter signal in a dose-dependent manner with an apparent IC50 of ∼5 µM.
S6738	TC-H 106 TC-H 106 (Pimelic Diphenylamide 106) is a slow, tight-binding inhibitor of class I histone deacetylases(HDAC) with Ki value of 148 nM, about 102 nM, 14 nM for HDAC1, HDAC2, HDAC3, respectively.
S2132	SR-4370 SR-4370 is a potent and selective inhibitor of class I HDACs with IC50 of 0.13 µM, 0.58 µM, 0.006 µM, 2.3 µM, 3.7 µM for HDAC 1, HDAC 2, HDAC 3, HDAC 8, HDAC 6, respectively.SR-4370 suppresses AR signaling and in vivo prostate tumor growth.
S8773	TH34 TH34 is a HDAC inhibitor that shows pronounced selectivity for HDACs 6, 8 and 10 over HDACs 1, 2 and 3. In a NanoBRET assay, TH34 strongly binds HDAC6, 8 and 10 with low-micromolar IC50 concentrations (HDAC6: 4.6 µM, HDAC8: 1.9 µM, HDAC10: 7.7 µM).
S8567	Tucidinostat (Chidamide) Tucidinostat (Chidamide, HBI-8000, CS-055) is a low nanomolar inhibitor of HDAC1, 2, 3, and 10, the HDAC isotypes well documented to be associated with the malignant phenotype with IC50 values of 95, 160, 67, 78 nM for HDAC1, 2, 3, 10 respectively.	Signal Transduct Target Ther, 2021, 6(1):333 Biomed Pharmacother, 2021, 138:111485 SLAS Discov, 2021, 24725552211002463
S6687	SIS17 SIS17 is a mammalian histone deacetylase 11 (HDAC 11)-specific inhibitor with IC50 of 0.83 μM. SIS17 inhibits the demyristoylation of HDAC11 substrate, serine hydroxymethyl transferase 2, without inhibiting other HDACs.
S2341	(-)-Parthenolide (-)-Parthenolide, an inhibitor of the Nuclear Factor-κB Pathway, specifically depletes HDAC1 protein without affecting other class I/II HDACs; Also promotes the ubiquitination of MDM2 and activates p53 cellular functions.	PLoS Genet, 2021, 17(11):e1009890 Theranostics, 2020, 10(22):9923-9936 J Biol Chem, 2020, 295(11):3576-3589	G. To evaluate effects of IKBKE/TBK1 inhibition on NF-κB signaling in Ewing, TC32 cells were incubated with CYT387 for six hours prior to stimulation with TNF-α (30 ng/mL). IκBα degradation was measured by harvesting TC32 cells thirty minutes after stimulation with TNF-α. TNF-α stimulation resulted in degradation of IκBα, and this effect was attenuated with CYT387 treatment. Parthenolide, an inhibitor of IκBα phosphorylation was used as a positive control. Similar effects of CYT387 activity were seen in HEK-293T cells which also express IKBKΕ. Nuclear extracts were prepared from TC32 cells harvested following forty-five minutes of TNF-α stimulation. Treatment with CYT387 resulted in decreased nuclear localization of NF-κB family proteins RelA/p65 and c-Rel. There was a modest impairment of p50 nuclear localization as compared to parthenolide and DMSO controls and no change in p52 nuclear localization. RelB (not shown) is not expressed in TC32 cells
S8495	WT161 WT161 is a potent, selective, and bioavailable HDAC6 inhibitor with IC50 values of 0.4 nM, 8.35 nM and 15.4 nM for HDAC6, HDAC1 and HDAC2, respectively; shown to have >100-fold selectivity over other HDACs. WT161 induces apoptosis.	Nat Metab, 2021, 3(1):75-89
S7596	CAY10603 CAY10603 (BML-281) is a potent and selective HDAC6 inhibitor with IC50 of 2 pM, >200-fold selectivity over other HDACs.	Neuro Oncol, 2021, 23(3):376-386 Cancer Res, 2021, canres.0955.2021 Nucleic Acids Res, 2020, 6;48(6):2912-2923	U87 and U251 cells were treated with HDAC6 selective inhibitors and the cells were harvested for subsequent western blot analysis.
S8648	ACY-738 ACY-738 inhibits HDAC6 with low nanomolar potency (IC50=1.7 nM) and a selectivity of 60- to 1500-fold over class I HDACs.	bioRxiv, 2020, 10.1101/2020.12.20.423672 J Biomed Sci, 2019, 26(1):27
S9262	Raddeanin A Raddeanin A (Raddeanin R3, NSC382873), a triterpenoid saponin from Anemone raddeana Regel, displays moderate inhibitory activity against histone deacetylases (HDACs) and has high antiangiogenic potency, antitumor activity.	Cell Mol Biol (Noisy-le-grand), 2020, 66(7):174-179
S1313	GSK3117391 GSK3117391 (GSK3117391A, HDAC-IN-3) is a potent histone deacetylase (HDAC) inhibitor.
S8769	Tinostamustine(EDO-S101) Tinostamustine(EDO-S101) is a first-in-class alkylating deacetylase inhibitor with IC50 values of 9 nM, 9 nM, 25 nM and 107 nM for HDAC1, HDAC2, HDAC3 and HDAC8 (Class 1 HDACs) respectively and 6 nM, 72 nM for HDAC6 and HDAC10 (Class II HDACs).
S7555	Domatinostat (4SC-202) Domatinostat (4SC-202) is a selective class I HDAC inhibitor with IC50 of 1.20 μM, 1.12 μM, and 0.57 μM for HDAC1, HDAC2, and HDAC3, respectively. Also displays inhibitory activity against Lysine specific demethylase 1 (LSD1). Phase 1.	Oral Dis, 2021, 10.1111/odi.13860 Cancers (Basel), 2020, 23;12(3) pii: E756 Cancer Res, 2018, 78(20):5731-5740
S7689	BG45 BG45 is a class I HDAC inhibitor with IC50 of 289 nM, 2.0 µM, 2.2 µM and >20 µM for HDAC3, HDAC1, HDAC2, and HDAC6 in cell-free assays, respectively.	Nucleic Acids Res, 2020, 6;48(6):2912-2923 Front Aging Neurosci, 2020, 12:619866 Anticancer Drugs, 2018, 29(1):61-74

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S8323	ITSA-1 (ITSA1) ITSA-1 (ITSA1) is an HDAC activator via TSA suppression, but shows no activity towards other HDAC inhibitors.	Alzheimers Res Ther, 2021, 13(1):7 Cancer Res, 2018, 78(20):5731-5740

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S8323