生物活性 | |||
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靶点 |
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描述 | Cyclin-dependent kinases (CDKs) are a large group of serine/threonine protein kinases that have central roles in the cell cycle signaling pathway[3]. CDK7, a member of the CDK family, can regulate transcription as part of the TFIIH basal transcription factor. BS-181 HCl inhibits cancer cell growth by inhibiting phosphorylation of CDK7 substrates, Ser5 in the RNA polymeraseII CTD. In vitro , the luciferase assay results showed that BS-181 inhibited CDK7 activity with an IC50 of 21 nM[4]. The IC50s of BS-181 HCl in MKN28, SGC-7901, AGS and BGC823 cell lines were 17-22 μM, and the IC50 in RGM-1 cell line was 6.5μM[5]. In vivo assay, tumor growth was significantly inhibited by BS-181 HCl in a dose-dependent manner. After intraperitoneal injection of BS-181 HCl to mice at the dose of 5mg / kg or 10mg / kg twice a day, the growth of tumor decreased by 25% and 50% respectively over a period of 14 days [4]. | ||
作用机制 | BS-181 HCl is a highly selective CDK7 inhibitor by inhibiting phosphorylation of CDK7 substrates. |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
2.40mL 0.48mL 0.24mL |
11.99mL 2.40mL 1.20mL |
23.98mL 4.80mL 2.40mL |
参考文献 |
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