...
首页> 外文期刊>Journal of Parasitology >CLASSICAL LIGANDS BIND TUBULIN OF TRYPANOSOMES AND INHIBIT THEIR GROWTH IN VITRO
【24h】

CLASSICAL LIGANDS BIND TUBULIN OF TRYPANOSOMES AND INHIBIT THEIR GROWTH IN VITRO

机译:经典的胰管结合蛋白管蛋白及其体外生长抑制

获取原文
获取原文并翻译 | 示例
           

摘要

Tubulin ligands known to be toxic to certain organisms or cells were tested for their ability to inhibit proliferation of trypanosomes in culture. Tubulin was purified from Trypanosoma brucei brucei or rat brain by poly-l-lysine affinity chromatography and used in binding studies in order to compare the binding of [3H]mebendazole to trypanosome and mammalian tubulin. All the compounds tested in culture inhibited trypanosome proliferation in a concentration-dependent manner. The concentration required to inhibit trypanosome proliferation by 50 or 90% (IC50 or IC90) in 24 hr was determined for each compound. There were no significant differences (P > 0.05) among the benzimidazoles (BZs), but colchicine and vinblastine caused significantly greater inhibitions than the BZs (P < 0.02 and P < 0.005, respectively). Increasing the incubation time to 72 hr caused a 2- to 4-fold lowering of the IC50 and IC90 values for all the drugs. In the binding assays, there was higher total binding of [3H]mebendazole to trypanosome than rat brain tubulin. The results suggest that the inhibition of trypanosome growth was caused by the specific interaction of these ligands with trypanosome tubulin. Trypanosome tubulin is, therefore, a reasonable target against which novel drugs can be developed to control trypanosomiasis.
机译:测试了已知对某些生物或细胞有毒的微管蛋白配体抑制培养物中锥虫体增殖的能力。通过聚-1-赖氨酸亲和色谱法从布氏锥虫或大鼠脑中纯化微管蛋白,并将其用于结合研究,以比较[3H]甲苯达唑与锥虫和哺乳动物微管蛋白的结合。在培养物中测试的所有化合物均以浓度依赖的方式抑制锥虫的增殖。对于每种化合物,确定在24小时内抑制锥虫增殖50%或90%(IC50或IC90)所需的浓度。苯并咪唑(BZs)之间没有显着差异(P> 0.05),但是秋水仙碱和长春碱比BZs产生更大的抑制作用(分别为P <0.02和P <0.005)。将孵育时间增加到72小时会导致所有药物的IC50和IC90值降低2到4倍。在结合试验中,[3H]甲苯达唑与锥虫的总结合要比大鼠脑微管蛋白高。结果表明,锥虫体生长的抑制是由这些配体与锥虫体微管蛋白的特异性相互作用引起的。因此,锥虫微管蛋白是合理的靶标,可以针对该靶标开发新药来控制锥虫病。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号