Pidnarulex (CX-5461)

製品コードS2684 バッチS268405

印刷

化学情報

Chemical Structure Synonyms N/A Storage
(From the date of receipt)		 3 years -20°C powder
1 years -80°C in solvent
化学式

C27H27N7O2S
分子量 513.61 CAS No. 1138549-36-6
Solubility (25°C)* 体外 DMSO Insoluble
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.

溶剤液（一定の濃度）を調合する

生物活性

製品説明 Pidnarulex (CX-5461) is an inhibitor of rRNA synthesis, selectively inhibits Pol I-driven transcription of rRNA with IC50 of 142 nM in HCT-116, A375, and MIA PaCa-2 cells, has no effect on Pol II, and possesses 250- to 300-fold selectivity for inhibition of rRNA transcription versus DNA replication and protein translation.
in vitro CX-5461 is found to selectively inhibit rRNA synthesis (Pol I IC50=142 nM; Pol II IC50 > 25 μM; selectivity ~200-fold) in the HCT-116 cells. Selective inhibition of rRNA synthesis by CX-5461 is confirmed in two other human solid tumor cell lines; melanoma A375 (Pol I IC50 = 113 nM; Pol II IC50 > 25 μM) and pancreatic carcinoma MIA PaCa-2 (Pol I IC50=54 nM; Pol II IC50 ~25 mM). CX-5461 possesses 250- to 300-fold selectivity for inhibition of rRNA transcription versus DNA replication and protein translation. CX-5461 exhibits broad antiproliferative potency in a panel of cancer cell lines in human cancer cell lines, but has minimal effect on viability of nontransformed human cells. The median EC50 across all tested cell lines is 147 nM, yet all normal cell lines have EC50 values of approximately 5, 000 nM. Evaluation of the antiproliferative dose response for HCT-116, A375, and MIA PaCa-2 cell lines yield EC50 values of 167, 58, and 74 nM. CX-5461 induces autophagy and senescence in solid tumor cancer cells, rather than apoptosis, through a p53-independent process. [1]
in vivo CX-5461 is orally bioavailable and demonstrates in vivo antitumor activity against human solid tumors in murine xenograft models. CX-5461 demonstrates significant MIA PaCa-2 TGI with TGI equal to 69% on day 31, comparable to that of gemcitabine (63% TGI). Gemcitabine is a positive control which is administered intraperitoneally once every 3 days at 120 mg/kg. Likewise, CX- 5461 demonstrates significant A375 TGI with TGI equal to 79% on day 32. [1]

プロトコル(参考用のみ)

キナーゼアッセイ Pol I and Pol II Transcription Assay
Two short-lived RNA transcripts (half-lives ~20-30 minutes), one produced by Pol I and another by Pol II, are quantitated by qRT-PCR as a measure of CX-5461-related effects on transcription. The 45S pre-rRNA served as the Pol I transcript and the mRNA for the protooncogene c-myc served as the comparator Pol II transcript. Both Pol I and Pol II transcription are known to be affected by general cellular stress. To minimize the potential effects of such stress, cells are exposed to test agents for only a short period of time (2 hours). This is sufficient time for these transcripts to be reduced by greater than 90% if CX-5461 affects their synthesis.
細胞アッセイ 細胞株 panel of cancer and normal cell lines
濃度 0-2 μM
反応時間 96 hours
実験の流れ Cells are plated on 96-well plates and treated the next day with dose response of CX-5461 for 96 hours. Cell viability is determined using Alamar Blue and CyQUANT assays
動物実験 動物モデル 5 × 106 MIA Paca-2 and A375 cancer cells are subcutaneously inoculated in the right flank of 5- to 6- week-old female athymic mice
投薬量 50 mg/kg
投与方法 CX-5461 is administered orally once daily or every 3 days.

カスタマーフィードバック

Data from [Data independently produced by PLoS One, 2014, 9(8), e104364]

Data from [Data independently produced by , , Cell, 2018, 174(2):338-349]

Data from [Data independently produced by , , Oncogene, 2015, 10.1038/onc.2015.147]

Selleckの高級品が、幾つかの出版された研究調査結果（以下を含む）で使われた：

VAV2 orchestrates the interplay between regenerative proliferation and ribogenesis in both keratinocytes and oral squamous cell carcinoma [ Sci Rep, 2024, 14(1):4060] PubMed: 38374399
Integrated drug response prediction models pinpoint repurposed drugs with effectiveness against rhabdomyosarcoma [ PLoS One, 2024, 19(1):e0295629] PubMed: 38277404
CX‑5461 potentiates imatinib‑induced apoptosis in K562 cells by stimulating KIF1B expression [ Exp Ther Med, 2024, 27(3):107.] PubMed: 38356673
CX‑5461 potentiates imatinib‑induced apoptosis in K562 cells by stimulating KIF1B expression [ Exp Ther Med, 2024, 27(3):107] PubMed: 38356673
USP36 stabilizes nucleolar Snail1 to promote ribosome biogenesis and cancer cell survival upon ribotoxic stress [ Nat Commun, 2023, 14(1):6473] PubMed: 37833415
USP36 stabilizes nucleolar Snail1 to promote ribosome biogenesis and cancer cell survival upon ribotoxic stress [ Nat Commun, 2023, 14(1):6473] PubMed: 37833415
Repression of rRNA gene transcription by endothelial SPEN deficiency normalizes tumor vasculature via nucleolar stress [ J Clin Invest, 2023, 133(20)e159860] PubMed: 37607001
Viscoelasticity and advective flow of RNA underlies nucleolar form and function [ Mol Cell, 2023, 83(17):3095-3107.e9] PubMed: 37683610
KMT2D Deficiency Promotes Myeloid Leukemias which Is Vulnerable to Ribosome Biogenesis Inhibition [ Adv Sci (Weinh), 2023, 10(19):e2206098] PubMed: 37142882
Actionable cancer vulnerability due to translational arrest, p53 aggregation and ribosome biogenesis stress evoked by the disulfiram metabolite CuET [ Cell Death Differ, 2023, 10.1038/s41418-023-01167-4] PubMed: 37142656

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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