通过油酸全局激活SHP2,抑制STAT3-Th17轴以改善大肠炎
1State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Drum Tower Hospital, School of Life Sciences, Nanjing University, Nanjing 210093, China.
Acta pharmaceutica Sinica. B
|June 3, 2024
概括
烯酸激活Src同质性2域含氨酸酸酶2 (SHP2),抑制炎症性Th17细胞分化和减轻小鼠大肠炎.
科学领域:
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 含氨酸酸酶2 (SHP2) 在细胞信号传递中至关重要,在炎症性疾病中具有治疗潜力.
- 识别SHP2激活剂和理解它们的机制对于开发新疗法至关重要.
研究的目的:
- 为了确定SHP2.2的新型全激活剂.
- 为了阐明 SHP2 激活由油酸的机制.
- 在大肠炎模型中评估烯酸的治疗潜力.
主要方法:
- 为了确定SHP2激活剂,采用了两步选试验.
- 分析了由油酸诱导的结合部位和形状变化.
- 研究了烯酸对Th17分化和STAT3激活的影响.
- 在小鼠中诱导大肠炎以评估酸的治疗效果,与SHP2淘汰和抑制剂对照.
主要成果:
- 烯酸被确定为SHP2的新型全激活剂,稳定其开放形状.
- 烯酸与PTP域中的特定残留物 (R362,K364,K366) 结合,促进基质相互作用.
- 由酸激活的SHP2通过破坏STAT3-IL-6Rα相互作用来抑制STAT3激活和Th17细胞分化.
- 酸治疗显著改善了小鼠的大肠炎,这种效果取决于SHP2活性.
结论:
- 奥莱阿诺酸是一种强大的SHP2激活剂,具有明确的作用机制.
- 油酸激活SHP2为炎症性肠道疾病提供了一种新的治疗策略.
- 奥莱阿诺酸显示出作为治疗大肠炎的重要潜力.
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