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通过抑制细菌酶来减轻癌症药物毒性
Bret D Wallace1, Hongwei Wang, Kimberly T Lane
1Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA.
概括
研究人员开发了针对导致严重腹的细菌酶的向抑制剂,由结肠癌药物CPT-11引起. 这些抑制剂保护肠道微生物,减少小鼠药物毒性,为癌症治疗提供了一种新的策略.
科学领域:
- 微生物学 微生物学
- 药理学 药理学是指药理学的学科.
- 生物化学 生物化学
背景情况:
- 严重腹是CPT-11的剂量限制副作用,CPT-11是一种常见的结肠癌化疗药物.
- 这种毒性是由细菌β-glucuronidases在肠道中重新激活CPT-11引起的.
- 选择性地准这些细菌酶可以减轻毒性,而不会伤害有益的肠道细菌.
研究的目的:
- 为了确定细菌β-葡萄糖酶的强效和选择性抑制剂.
- 评估这些抑制剂在体外和体内对细菌酶的疗效.
- 评估这些抑制剂在预防CPT-11引起的毒性方面的治疗潜力.
主要方法:
- 高通量查以确定细菌β-葡萄糖酶抑制剂.
- 酶测试以确定抑制剂的强度和对细菌和哺乳动物的选择性.
- 分析晶体结构以了解选择性的基础.
- 在活有氧和无氧细菌和哺乳动物细胞中测试抑制剂.
- 在小鼠体内研究以评估对CPT-11毒性的保护.
主要成果:
- 强大的细菌β-葡萄糖酶抑制剂被确定.
- 抑制剂对细菌酶具有较高的选择性,超过哺乳动物的基因组,基于独特的结构特征.
- 抑制剂对细菌中的目标酶有效,而不会导致细菌死亡或损害哺乳动物细胞.
- 口服一种抑制剂成功地保护了小鼠免受CPT-11诱导的腹.
结论:
- 选择性抑制微生物酶是一种可行的策略,可以提高化疗的疗效.
- 这种方法可以通过针对特定的微生物活动来减轻药物诱导的毒性.
- 开发这种向抑制剂为改善癌症患者的治疗结果提供了一个有希望的途径.
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