开发针对蛋白质-DNA相互作用和相分离的cGAS循环类抑制剂
Xiaoquan Wang1, Youqiao Wang2, Anqi Cao1
1State Key Laboratory of Chemical Oncogenomics, Guangdong Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
Nature communications
|October 2, 2023
概括
研究人员发现了循环抑制剂,可以阻止循环GMP-AMP合成酶 (cGAS),这是先天免疫的关键蛋白质. 这些抑制剂向DNA结合和相分离,为cGAS依赖的炎症性疾病提供潜在的治疗方法.
科学领域:
- 免疫学 免疫学 免疫学
- 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:
- 循环GMP-AMP合成酶 (cGAS) 是细胞质DNA的关键传感器,启动先天免疫反应.
- 失调的cGAS活性与自身免疫和自身炎症性疾病有关,使其成为潜在的治疗点.
研究的目的:
- 发现和描述cGAS活动的新型抑制剂.
- 在临床前模型中评估已识别的抑制剂的治疗潜力.
主要方法:
- 循环库的体外查以确定cGAS抑制剂.
- 生物化学和细胞分析以评估抑制剂的特异性,强度和作用机制.
- 使用小鼠模型进行体内研究以评估治疗疗效.
主要成果:
- 发现了一种针对cGAS的新型环类抑制剂.
- 化合物XQ2B特别与cGASDNA结合部位结合,抑制dDNA诱导的cGAS激活和相分离.
- 在细胞和动物模型中,XQ2B在抑制cGAS依赖性炎症方面表现出有效性,包括Trex1缺乏的小鼠.
结论:
- 针对cGAS的蛋白质-DNA相互作用和相分离的环胺抑制剂是一个有希望的治疗策略.
- XQ2B作为一种有价值的化合物,用于开发用于cGAS介导的炎症性疾病的新疗法.
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