大理大学学报 ›› 2022, Vol. 7 ›› Issue (10): 32-38.

• 基础医学 • 上一篇    下一篇

基于NLRP3通路研究miR-155THP-1巨噬细胞炎症反应的调控作用

宁晓县,申元英,郭 乐*   

  1. (大理大学基础医学院,云南大理 671000

  • 收稿日期:2022-04-22 修回日期:2022-05-03 出版日期:2022-10-15 发布日期:2022-11-15
  • 通讯作者: 郭乐,特聘副教授,E-mail:le.guo@dali.edu.cn。
  • 作者简介:宁晓县,硕士研究生,主要从事感染与免疫研究。
  • 基金资助:

    国家自然科学基金项目(81960371);云南省基础研究计划项目(202001AU070014

Regulation of MiR-155 on THP-1 Macrophage Inflammatory Response Based on NLRP3 Pathway

Ning XiaoxianShen YuanyingGuo Le   

  1. Pre-clinical CollegeDali UniversityDali Yunnan 671000China

  • Received:2022-04-22 Revised:2022-05-03 Online:2022-10-15 Published:2022-11-15

摘要:

[摘要] 目的:基于核苷酸结合寡聚化结构域样受体蛋白3NLRP3)炎症小体通路探讨miR-155对脂多糖(LPS)诱导的THP-1巨噬细胞炎症反应的调控作用。方法:构建LPS诱导的THP-1巨噬细胞炎症模型,将细胞分为空白对照组、LPS组、miR-155过表达组和miR-155阴性对照组,实时荧光定量聚合酶链反应检测白细胞介素1β(IL-1β)、肿瘤坏死因子α(TNF-α)和NLRP3的表达变化;酶联免疫吸附试验测定IL-1β和TNF-α的分泌水平;蛋白质印迹法检测NLRP3和含半胱氨酸的天冬氨酸蛋白水解酶-1Caspase-1)的表达。结果:LPS诱导细胞中炎症因子、NLRP3miR-155表达;过表达miR-155,进一步促进炎症因子NLRP3Caspase-1蛋白的表达。结论:miR-155通过激活其潜在作用靶点NLRP3促进LPS诱导的THP-1巨噬细胞炎症反应。

关键词:

"> font-size:10.5pt, ">NLRP3通路, miR-155, THP-1细胞, 炎症font-size:10.5pt, ">

Abstract:

AbstractObjectiveTo investigate the regulatory effect of miR-155 on lipopolysaccharide LPS-induced inflammatory response of THP-1 macrophages  based on the nucleotide binding oligomerized domain-like receptor 3 NLRP3inflammasome pathway.MethodThe LPS-induced inflammatory model of THP-1 macrophages was constructedthe cells were divided into blank control groupLPS group, miR-155 overexpression group and miR-155 negative control group, and real-time quantitative polymerase chain reaction detected the expression changes of interleukin 1β (IL-1β), tumor necrosis factor α (TNF-α) and NLRP3. Enzyme-linked immunosorbent assay measures the secretion levels of IL-1β and TNF-α; Western blot detection of NLRP3 and cysteine-containing aspartate proteolytic enzyme-1 Caspase-1. ResultsLPS induced the expression of inflammatory cytokinesNLRP3 and miR-155 in cellsoverexpression of miR-155 further promoted the expression of inflammatory cytokinesNLRP3 and Caspase-1 proteins.ConclusionMiR-155 promotes the LPS induced THP-1 macrophage inflammatory response by activating its potential target NLRP3.

Key words:

"> font-size:10.5pt, ">NLRP3 pathway, miR-155, THP-1 cell, inflammation

中图分类号: