生物活性 | |||
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描述 | Thymidylate synthase (TS) is critical enzyme for the synthesis of DNA- it converts dUMP (2′-deoxyuridine-5′-monophosphate) into dTMP (2′-deoxythymidine-5′-monophosphate). Raltitrexed is an antimetabolite drug used in chemotherapy, and was developed as a direct and specific inhibitor of TS[3]. Raltitrexed (0.5 μg/mL) shows typical apoptotic morphology, including nuclear shrinkage, fragmentation, chromatin condensation and apoptotic bodies in SGC7901 cells. Raltitrexed blocks the cell cycle at the G0/G1 phase, decreases in the mitochondrial membrane potential. Raltitrexed also increases the level of ROS, induces caspase-3-dependent apoptosis via activation of the mitochondria, and increases TS protein and mRNA expression levels[4]. Raltitrexed (1.5 nM) reduces the number of GM00637 cells, selectively induces gene conversions, but does not affect DSB-induced HR or NHEJ[5]. Raltitrexed (0, 5, 10, 11.5, 13.5, 15 mg/kg b/w, i.p.) increases the rates of resorbed embryos and growth retardation of murine model of NTDs in a dose dependent manner. Raltitrexed (11.5 mg/kg b/w) maximally inhibits the thymidylate synthase (TS) activity in embryonic tissue, decreases dTMP levels and while increases dUMP levels[6]. |
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 |
chinese hamster D4 cells | Proliferation assay | 96 h | Antiproliferative activity against chinese hamster D4 cells expressing human FRbeta assessed as reduction of viable cells after 96 hrs, IC50=22 nM | 21879757 | |
human HepG2 cells | Cytotoxicity assay | 48 h | Cytotoxicity against human HepG2 cells after 48 hrs by MTT assay, IC50=1.3 μM | 23490159 | |
human IGROV1 cells | Proliferation assay | Antiproliferative activity against human RFC and FRalpha expressing human IGROV1 cells, IC50=12.6 nM | 18680275 |
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 |
NCT02678806 | HepatoCellular Carcinoma | Not Applicable | Recruiting | November 1, 2022 | China, Guangxi ... 展开 >> TaoBai Recruiting Nanning, Guangxi, China, 530000 Contact: Bai Tao, MD +86 13878862632 25859373@qq.com 收起 << |
NCT01703910 | Adenocarcinoma of Colon ... 展开 >> Adenocarcinoma of Rectum Metastatic Disease 收起 << | Phase 2 | Completed | - | Spain ... 展开 >> Hospital Universitario de Fuenlabrada Fuenlabrada, Madrid, Spain, 28950 Hospital Madrid Norte Sanchinarro Madrid, Spain, 28050 收起 << |
NCT01481545 | Rectal Cancer | Phase 2 | Unknown | July 2018 | - |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
2.18mL 0.44mL 0.22mL |
10.91mL 2.18mL 1.09mL |
21.81mL 4.36mL 2.18mL |
参考文献 |
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