通过促进TRIM45表达,IGF2BP1在微状细胞中加剧NLRP3炎症酶激活和亲炎性表现型,促进TRIM45表达
Pei Wang1, Yanling Huang1, Qian Ma2
1Department of Neurology, Chongqing University Central Hospital Medicine, NO.1 Jiankang Road, Yuzhong District, Chongqing, 400014, China.
Neurotoxicity research
|February 4, 2026
概括
胰岛素样生长因子2mRNA结合蛋白1 (IGF2BP1) 通过激活NLRP3炎症酶和通过m6A甲基化调节TRIM45,加剧脑缺血-再输血 (I/R) 后的神经元损伤. 抑制IGF2BP1可以保护神经元免受I/R损伤.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 大脑缺血-再输液 (I/R) 损伤是心肌梗塞和中风后并发症的主要原因.
- 了解大脑I / R中神经元损伤的基础分子机制对于开发有效的治疗方法至关重要.
研究的目的:
- 调查胰岛素样生长因子2的mRNA结合蛋白1 (IGF2BP1) 和含有三方基因的45 (TRIM45) 在脑I/R后的神经元损伤中的作用.
- 阐明潜在的分子机制,包括NLRP3炎症酶和m6A甲基化的参与.
主要方法:
- 使用HMC3细胞的体外氧气-葡萄糖剥夺和再氧化 (OGD/R) 模型.
- 西部斑点,qRT-PCR,ELISA,流细胞测量,CCK-8,TUNEL,meRIP和RIP测定. 这些测试包括:
- 在体内中脑动脉封闭 (MCAO) 的小鼠模型.
主要成果:
- 在OGD/R刺激的HMC3细胞中,IGF2BP1水平上调.
- 过度表达IGF2BP1促进了NLRP3炎症酶激活和促炎症的表型.
- 通过m6A甲基化,IGF2BP1调节了TRIM45的表达,其敲击抑制了炎症并保护了神经元.
- 抑制IGF2BP1降低了神经毒性,并在共同培养系统中改善了神经元活力.
结论:
- IGF2BP1在大脑I / R后恶化神经元损伤方面发挥着重要作用.
- 通过激活NLRP3炎症酶和通过m6A甲基化调节TRIM45,IGF2BP1促进神经炎症和神经元死亡.
- 向IGF2BP1可能是缓解大脑I/R损伤的治疗策略,尽管需要使用更大的样本大小进行进一步研究.
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