hnRNPA1 SUMOylation通过稳定TRPA1 mRNA来促进慢性炎症性疼痛中的感冒过敏
Qiao Zhang1, Weiji Weng1, Xiaokun Gu1
1Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
Cell reports
|November 9, 2023
概括
hnRNPA1的SUMOylation增强TRPA1mRNA的稳定性,增加TRPA1的表达,并导致炎症性感冒疼痛过敏. 这突出了hnRNPA1作为慢性疼痛发展的关键调节者.
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
- 疼痛研究 疼痛研究
背景情况:
- TRPA1通道对于寒冷过敏至关重要.
- 在炎症性感冒疼痛中调节TRPA1的机制尚未完全理解.
研究的目的:
- 调查SUMOylation和hnrnpa1在调节炎性疼痛期间trpa1表达中的作用.
- 阐明导致炎症性感冒疼痛过敏的分子机制.
主要方法:
- 在小鼠中使用完整的弗伦德辅助剂 (CFA) 诱导的炎症性疼痛模型.
- 分析了SUMO1结合蛋白水平和TRPA1mRNA的稳定性.
- 研究了hnRNPA1与TRPA1mRNA的结合及其细胞质积累.
- 使用病毒载体用于背部根腺神经元中的野生类型和突变hnnRNPA1表达.
主要成果:
- 在CFA引起的疼痛中,SUMO1结合蛋白的上调增加了TRPA1mRNA的稳定性和表达.
- hnRNPA1与TRPA1mRNA结合,其SUMOylation通过促进细胞质积累来稳定mRNA.
- 野生型hnnRNPA1的病毒传递,但不是SUMOylation缺陷突变,在hnnRNPA1敲击小鼠中挽救了疼痛过敏.
结论:
- hnRNPA1调节TRPA1mRNA的稳定性,而SUMO1结合在炎症期间增强了这一功能.
- 由于hnRNPA1 SUMOylation导致TRPA1表达的增加有助于慢性炎症感冒疼痛过敏.
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