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Synonyms | N/A | Storage (From the date of receipt) |
3 years -20°C powder 1 years -80°C in solvent |
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化学式 | C20H21N3O2 |
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分子量 | 335.4 | CAS No. | 1252003-15-8 | |
Solubility (25°C)* | 体外 | DMSO | 5 mg/mL warmed with 50ºC water bath (14.9 mM) | |
Water | Insoluble | |||
Ethanol | Insoluble | |||
* <1 mg/ml means slightly soluble or insoluble. * Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations. |
製品説明 | 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. |
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in vitro | Tubastatin A is selective at all isozymes except HDAC8 and maintains over 1000-fold selectivity against all isoforms excluding HDAC8, where it has approximately 57-fold selectivity. Tubastatin A preferentially induces α-tubulin hyperacetylation at 2.5 μM. Slight induction of histone hyperacetylation is seen for Tubastatin A at 10 μM. Tubastatin A displays dose-dependent protection against homocysteic acid-induced neuronal cell death starting at 5 μM with near complete protection at 10 μM. [1] Tubastatin A (10 μM) induces an increase in acetylated-α-tubulin levels and the restoration of primary cilia expression in the cholangiocarcinoma cell lines (18-fold); and the restoration of primary cilia correlated with downregulated Hedgehog (Hh) and MAPK signaling pathways, as well as decreased cell proliferation rates (in average by 50%) and invasion (by 40%). [2] Tubastatin A shows significant inhibition of TNF-α and IL-6 in LPS stimulated human THP-1 macrophages with an IC50 of 272 nM and 712 nM. Tubastatin A inhibits nitric oxide (NO) secretion in murine Raw 264.7 macrophages dose depenndently with an IC50 of 4.2 μM. [3] |
in vivo | Tubastatin A reduces the growth of cholangiocarcinoma in vivo. Tubastatin A (10 mg/kg) induces a 6-fold lower mean tumor weights in syngeneic rat orthotopic model of cholangiocarcinoma, and reduction of the ratios of tumor weight to liver weight and body weight (5- and 5.6-fold, respectively), as well as a greater frequency of ciliated cholangiocytes compared with controls (29% vs 1.4%). Tubastatin A significantly decreases the amount of PCNA-positive cells in the treated tumors compared with vehicle controls (34% vs 65%). [2] Tubastat A shows significant inhibition of paw volume at 30 mg/kg i.p. in a Freund's complete adjuvant (FCA) induced animal model of inflammation. Tubastat A (30 mg/kg i.p.) significant attenuates clinical scores (~ 70%), and IL-6 expression in paw tissues of collagen induced arthritis DBA1 mouse. [3] |
キナーゼアッセイ | HDAC enzymatic assays | |
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Tubastatin A is dissolved and diluted in assay buffer (50 mM HEPES, pH 7.4, 100 mM KCl, 0.001% Tween-20, 0.05% BSA, and 20 μM tris(2-carboxyethyl)phosphine) to 6-fold of the final concentration. HDAC enzymes are diluted to 1.5-fold of the final concentration in assay buffer and pre-incubated with Tubastatin A for 10 minutes before the addition of the substrate. The amount of FTS (HDAC1, HDAC2, HDAC3, and HDAC6) or MAZ-1675 (HDAC4, HDAC5, HDAC7, HDAC8, and HDAC9) used for each enzyme is equal to the Michaelis constant (Km), as determined by a titration curve. FTS or MAZ-1675 is diluted in assay buffer to 6-fold the final concentration with 0.3 μM sequencing grade trypsin. The substrate/trypsin mix is added to the enzyme/compound mix and the plate is shaken for 60 seconds and then placed into a SpectraMax M5 microtiter plate reader. The enzymatic reaction is monitored for release of 7-amino-4-methoxy-coumarin over 30 minutes, after deacetylation of the lysine side chain in the peptide substrate, and the linear rate of the reaction is calculated. | ||
細胞アッセイ | 細胞株 | Human cholangiocarcinoma cell lines HuCCT-1 |
濃度 | ~10 μM | |
反応時間 | 21 days | |
実験の流れ | Anchorage-independent growth is assessed by growing cells in soft agar. About 25,000 cells suspended in 0.4% agar in culture media are layered over a 1% agar layer in a 6-well plate. Media are added twice a week and pictures are taken after 21 days of incubation. The number and size of colonies are analyzed using the Gel-Pro software. |
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動物実験 | 動物モデル | Rat cholangiocarcinoma xenografts BDEneu |
投薬量 | 10 mg/kg | |
投与方法 | i.p. daily |
Data from [Data independently produced by Nat Commun, 2014, 5, 3479]
Data from [Data independently produced by Int J Cancer, 2014, 134(11):2560-71]
Data from [J Biol Chem, 2013, 288(20), 14400-7]
Integrated drug response prediction models pinpoint repurposed drugs with effectiveness against rhabdomyosarcoma [ PLoS One, 2024, 19(1):e0295629] | PubMed: 38277404 |
HDAC Inhibition Induces CD26 Expression on Multiple Myeloma Cells via the c-Myc/Sp1-mediated Promoter Activation [ Cancer Res Commun, 2024, 4(2):349-364] | PubMed: 38284882 |
α-Tubulin detyrosination links the suppression of MCAK activity with taxol cytotoxicity [ J Cell Biol, 2023, 222(2)e202205092] | PubMed: 36459065 |
Selectivity of Hydroxamate- and Difluoromethyloxadiazole-Based Inhibitors of Histone Deacetylase 6 In Vitro and in Cells [ Int J Mol Sci, 2023, 24(5)4720] | PubMed: 36902164 |
Shortening of primary cilia length is associated with urine concentration in the kidneys [ Kidney Res Clin Pract, 2023, 42(3):312-324] | PubMed: 37313611 |
Reprogramming Short-Chain Fatty Acid Metabolism Mitigates Tissue Damage for Streptococcus pyogenes Necrotizing Skin Infection [ Res Sq, 2023, rs.3.rs-3689163] | PubMed: 38196634 |
Corroborating evidence for aberrant expression of histone deacetylase 8 in endometriosis [ Reprod Med Biol, 2023, 22(1):e12527] | PubMed: 37476367 |
Corroborating evidence for aberrant expression of histone deacetylase 8 in endometriosis [ Reprod Med Biol, 2023, 10.1002/rmb2.12527] | PubMed: 37476367 |
Protective effect of HDACIs in improves survival and organ injury after CLP-induced sepsis [ Surg Open Sci, 2023, 12:35-42] | PubMed: 36936452 |
Actin-microtubule cytoskeletal interplay mediated by MRTF-A/SRF signaling promotes dilated cardiomyopathy caused by LMNA mutations [ Nat Commun, 2022, 13(1):7886] | PubMed: 36550158 |
長期の保管のために-20°Cの下で製品を保ってください。
人間や獣医の診断であるか治療的な使用のためにでない。
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