第一个类别的除ubiquitinase向的奇美拉稳定和激活cGAS
Zhijie Deng1,2,3, Li Chen4,5, Chao Qian1,2,3
1Mount Sinai Center for Therapeutics Discovery, Icahn School of Medicine at Mount Sinai, 10029, New York, New York, United States.
Angewandte Chemie (International ed. in English)
|August 16, 2024
概括
新的双基因酶向嵌合体 (DUBTAC) 技术推进了向蛋白质稳定 (TPS). 研究人员为cGAS开发了新的DUBTAC,并改善了CFTR稳定,扩大了DUBTAC的应用.
科学领域:
- 生物化学 生化学
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 脱基酸酶向嵌合体 (DUBTAC) 技术为向蛋白稳定 (TPS) 提供了潜在的潜力.
- 通过DUBTACs稳定蛋白质的有限成功归因于适度的效果和缺乏有效的二维基因酶配体.
- cGAS-STING通路是一个具有治疗意义的关键信号级联.
研究的目的:
- 发现和开发用于cGAS的新型DUBTACs,这是cGAS-STING通路中的关键蛋白质.
- 优化二维基丁酶配体,以提高DUBTAC的疗效.
- 为了证明 DUBTAC 技术在向蛋白质稳定方面的性能提升.
主要方法:
- 发现MS7829和MS8588作为第一个针对cGAS的DUBTAC.
- 优化EN523,一个OTUB1共价连接体,变成一个改进的连接体,MS5105.5.
- 基于MS5105的CFTR DUBTAC的生成和验证以评估稳定效率.
主要成果:
- MS7829和MS8588有效地稳定了cGAS,并激活了cGAS/STING/IRF3信号通路.
- 优化的配体MS5105显著提高了DUBTAC的性能.
- 基于MS5105的CFTR DUBTAC显示,与以前的DUBTAC相比,稳定ΔF508-CFTR突变蛋白的效果增加了10倍.
结论:
- 本研究引入了首个用于cGAS的DUBTAC,验证了它们稳定蛋白和激活下游信号传输的能力.
- 用MS5105为例,对二维基因酶连接体的优化大大提高了DUBTAC在向蛋白质稳定中的有效性.
- 这些发现代表了DUBTAC技术的重大进步,扩大了其用于治疗性蛋白质稳定的适用性.
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