TMPRSS11D特异性和自动切割激活的结构基础
Bryan J Fraser1,2, Ryan P Wilson3, Sára Ferková4,5
1Structural Genomics Consortium Toronto, Toronto, ON, Canada. Bryanj.fraser@utoronto.ca.
Nature communications
|May 10, 2025
概括
像TMPRSS2和TMPRSS11D这样的跨膜蛋白酶会激活自己进入病毒. 新的抑制剂显示出希望,但现有的药物如纳法莫斯塔特酸对TMPRSS11D有局限性.
科学领域:
- 生物化学 生物化学
- 病毒学 病毒学
- 结构生物学 结构生物学
背景情况:
- 跨膜蛋白酶Serine-2 (TMPRSS2) 和TMPRSS11D对于SARS-CoV-2和流感A/B病毒进入细胞至关重要.
- 这些蛋白酶促进病毒进入的精确生化机制仍然不完全理解.
研究的目的:
- 阐明TMPRSS2和TMPRSS11D的自分裂激活机制.
- 调查TMPRSS11D基质识别的结构基础.
- 开发针对这些病毒蛋白酶的新型皮胺抑制剂.
主要方法:
- 齐摩根激活动机切割试验. 分裂试验.
- 具有激活图案的TMPRSS11D的共同晶体学.
- 开发和测试胺抑制剂的开发和测试.
- 用纳法莫斯塔特甲基酸盐进行酶活性测定.
主要成果:
- TMPRSS2和TMPRSS11D有效地切割它们自己的细胞原激活基因,从而导致蛋白酶激活.
- 对TMPRSS11D的结构确定揭示了其自分裂和基质结合的洞察力.
- 针对TMPRSS11D和TMPRSS2.2,开发了新型的纳米级强度胺抑制剂.
- 纳法莫斯塔特甲基酸盐被证明是通过TMPRSS11D的快速裂变和无活化.
结论:
- 获得了对人类蛋白酶激活和病毒热流的机制见解.
- 这项研究突出了当前蛋白酶胺基酶抑制剂的潜力和局限性.
- 这些发现有助于开发下一代针对病毒蛋白酶的治疗方法.
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