生物活性 | |||
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靶点 |
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描述 | HDACs are a group of enzymes that remove acetyl groups and regulate the histone tail, protein-DNA interaction, chromatin conformation, and even transcription. There are 18 mammalian HDACs divided into four classes: class I (HDACs 1, 2, 3, 8), class II (HDACs 4, 5, 6, 7, 9, 10), class III (sirtuin family: sirt1-sirt7) and class IV (HDAC11)[1]. Trichostatin A (TSA) is the inhibitors of the class I and class II HDACs with IC50 value of 2.4 ± 0.5 nM (measured by HDAC activity in cellular extracts). Trichostatin A treatment with concentration of 2 μM for 24h can increase histone H4 hyperacetylation in all of the breast cancer cell lines tested (MCF-7, T-47D, ZR-75-1, BT-474, MDA-MB-231, MDA-MB-453, CAL 51, and SK-BR-3) significantly and inhibit the cell growth with IC50 values ranging in 26 – 308 nM in 96h. Treatment of 500 μg/kg trichostatin A by s.c injection daily for 4 weeks significantly inhibited tumor growth in Ludwig/Wistar/Olac female rats bearing tumors induced with NMU, compared with control[2]. Trichostatin A is usually used in the study of tumor growth inhibition. The cell death and cell cycle arrest induced by it may involve in several mechanisms including transcription-dependence and -independence, such as cell cycle arrest, apoptosis, the regulation of ROS and the inhibition of angiogenesis[3]. | ||
作用机制 | Trichostatin A comprises a hydroxamic acid-based metal-binding domain that coordinates the catalytic Zn(II) in the HDAC active site[4]. |
细胞研究 | |||||
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细胞系 | 浓度 | 检测类型 | 检测时间 | 活动说明 | 数据源 |
A2780 | 0.05-2 μM | Growth Inhibition Assay | 10/24/48 h | mediates growth arrest in a concentration- and time-dependent manner | 24223801 |
A431 | 2/10/50/100nM | Apoptosis Assay | 48h | inhibits the cell growth | 25371069 |
A431 | 50nM | Function Assay | 2/6/12/24h | activates p21 and inhibits ATF3 expression | 25371069 |
临床研究 | |||||
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NCT号 | 适应症或疾病 | 临床期 | 招募状态 | 预计完成时间 | 地点 |
NCT03049124 | Rectal Cancer | Not Applicable | Recruiting | July 31, 2019 | Canada, Ontario ... 展开 >> University of Ottawa Recruiting Ottawa, Ontario, Canada, K1N 6N5 Contact: Amanda Wurz, MSc 613-562-5800 ext 3626 amanda.wurz@uottawa.ca 收起 << |
NCT02152267 | Craniomandibular Disorders | Not Applicable | Completed | - | Brazil ... 展开 >> Federal University of Bahia Salvador, Bahia, Brazil, 40110-902 收起 << |
NCT01028014 | Urethral Sphincter Activity | Not Applicable | Completed | - | United States, Alabama ... 展开 >> University of Alabama at Birmingham, The Kirklin Clinic Birmingham, Alabama, United States, 35233 收起 << |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
3.31mL 0.66mL 0.33mL |
16.54mL 3.31mL 1.65mL |
33.07mL 6.61mL 3.31mL |
参考文献 |
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