生物活性 | |||
---|---|---|---|
靶点 |
|
||
描述 | Type II topoisomerases are ubiquitous enzymes in all branches of life that can alter DNA superhelicity and unlink double-stranded DNA segments during processes such as replication and transcription. In cells, type II topoisomerases are particularly useful for their ability to disentangle newly-replicated sister chromosomes[3]. Teniposide is a topoisomerase II inhibitor. Teniposide (VM-26, 0.15-45 mg/L) inhibits the proliferation of Tca8113 cells in a dose-dependent manner, with an IC50 of 0.35 mg/L. Teniposide (5 mg/L) induces apoptosis of Tca8113 cells. Teniposide (5.0 mg/L) causes cell arrested at G2/M phase in Tca8113 cells[4].Teniposide (0.5 mg/kg, i.p.) significantly increases micronucleated polychromatic erythrocyte (MNPCE) frequencies, which is directly related to bone marrow toxicity as significant suppression of bone marrow is noted. Teniposide (24 mg/kg, i.p.) markedly decreases the frequencies of BrdU-labelled sperm. Teniposide (12, 24 mg/kg, i.p.) also dramatically induces disomic sperm in the germ cell of male mice[5]. Teniposide is active on primary cultured glioma cells from patients, when the level of miR-181b is high in the cells, with an IC50 of 1.3 ± 0.34 μg/mL. Cells treated with teniposide with low MDM2 have decreased viability compared with control cells, and the IC50 decreases from 5.86 ± 0.36 μg/mL to 2.90 ± 0.35 μg/mL upon MDM2 suppression. Teniposide also inhibits the viability of glioma cell with high level of miR-181b, through mediation of MDM2[6]. |
临床研究 | |||||
---|---|---|---|---|---|
NCT号 | 适应症或疾病 | 临床期 | 招募状态 | 预计完成时间 | 地点 |
NCT00198991 | Adult Acute Lymphocytic Leukem... 展开 >>ia 收起 << | Phase 4 | Unknown | - | Germany ... 展开 >> University of Frankfurt, Medical Dept. II Recruiting Frankfurt, Germany, 60590 Contact: Dieter Hoelzer, MD,PhD ++49(0)69 6301 5194 hoelzer@em.uni-frankfurt.de Contact: Nicola Goekbuget, MD ++49(0)69 6301 6365 goekbuget@em.uni-frankfurt.de Principal Investigator: Dieter Hoelzer, MD,PhD Sub-Investigator: Nicola Goekbuget, MD 收起 << |
NCT02086942 | Multiple Myeloma | Phase 2 | Recruiting | August 2017 | China, Jiangsu ... 展开 >> Jinling Hospital Recruiting Nanjing, Jiangsu, China, 210002 Contact: zhai yo ping, doctor 13951947646 ypzhai@medmail.com.cn 收起 << |
NCT00199004 | Adult Acute Lymphocytic Leukem... 展开 >>ia 收起 << | Phase 4 | Completed | - | Germany ... 展开 >> University Hospital of Frankfurt, Medical Dept. II Frankfurt, Germany, 60590 收起 << |
实验方案 | |||
---|---|---|---|
1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
1.52mL 0.30mL 0.15mL |
7.61mL 1.52mL 0.76mL |
15.23mL 3.05mL 1.52mL |
参考文献 |
---|