不同的蛋白质组反应性影响了通过药理学内质网膜蛋白质稳定调节器对展开的蛋白质反应的选择性激活
Gabriel M Kline1, Ryan J Paxman1, Chung-Yon Lin1
1Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States.
ACS chemical biology
|July 31, 2023
概括
激活转录因子6 (ATF6) 有助于蛋白质稳定. 化合物AA132通过修改内网膜 (ER) 蛋白质二硫化异相酶 (PDIs) 全球激活未折叠蛋白质反应 (UPR),与选择性ATF6激活剂AA147.2不同.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 展开的蛋白质反应 (UPR) 对于维持蛋白质静止至关重要,激活转录因子6 (ATF6) 臂显示了治疗潜力.
- 像AA147这样的小分子可以选择性地激活ATF6,为疾病治疗提供了有针对性的方法.
- 以前的研究发现AA147是选择性的ATF6激活剂,AA132是不那么选择性的UPR激活剂,两者都来自2-氨基-p-cresol结构.
研究的目的:
- 阐明AA132在全球范围内激活UPR的机制.
- 为了比较AA132和AA147.7的蛋白质修饰概况.
- 了解化合物稳定性,蛋白质修饰和UPR激活之间的关系.
主要方法:
- 使用化学蛋白质组分析来确定AA132和AA147.7的蛋白质标.
- 研究两种化合物的代谢激活和共价修饰途径.
- 评估化合物度对蛋白质修饰和UPR信号传递的影响.
主要成果:
- 与AA147相似的AA132通过代谢激活和内 плазма网膜 (ER) 蛋白质二硫化异构酶 (PDIs) 的共价修饰来激活UPR.
- 与AA147相比,AA132表现出更广泛的PDI修饰,这表明其活性形式更稳定,持续时间更长.
- 降低AA132度将其活动转移到选择性ATF6激活,减少PDI修改.
结论:
- AA132通过加强ER PDI的参与和修改,在全球范围内激活UPR.
- 激活电的稳定性会影响ER蛋白质组反应的程度以及由此产生的转录反应.
- 这些发现为开发下一代ATF6激活化合物提供了洞察力,通过了解酶氨化学型的行为.
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