在缺氧下由HIF-1α诱导的线粒体功能障碍有助于胃粘膜病变的发展
Yuelin Xiao1, Xianzhi Liu1, Kaiduan Xie1
1Department of Gastroenterology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.
缺氧诱导因子-1α (HIF-1α) 通过增加线粒体功能障碍和改变新陈代谢,驱动胃病变的发展. 阻止HIF-1α或其下游影响可以减轻胃粘膜疾病中的这些有害过程.
科学领域:
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
- 病理生理学 病理生理学
背景情况:
- 缺氧是胃粘膜疾病的关键特征.
- 缺氧诱导因子-1α (HIF-1α) 与微环境和代谢变化有关.
- 在胃病变中缺氧驱动的线粒体功能障碍中,HIF-1α的确切作用尚不清楚.
研究的目的:
- 研究缺氧诱导的HIF-1α对胃粘膜病变发展的影响.
- 阐明连接HIF-1α,线粒体功能障碍和胃疾病中的代谢变化的机制.
主要方法:
- 对患有门性高血压胃 (PHG) 和胃癌 (GC) 的患者的胃组织进行分析.
- 建立PHG小鼠模型和胃瘤异种移植模型.
- 研究涉及HIF-1α,METTL3,胺相关蛋白1 (Drp1),线粒体功能障碍和糖解的机制.
主要成果:
- 在缺氧下升高的HIF-1α与线粒体功能障碍相关,并在胃病变中增加线粒体活性氧物种 (mtROS).
- 抑制HIF-1α,METTL3或DRp1依赖的线粒体裂变可以改善这些效应.
- HIF-1α促进了糖解和mtROS的产生,激活了NLRP3炎症酶,这加剧了PHG和GC的发展.
结论:
- 缺氧诱导的HIF-1α通过促进线粒体功能障碍和改变糖分解变化,加剧胃粘膜病变.
- 这一过程产生mtROS,激活NLRP3炎症酶并促进疾病的进展.
- 准HIF-1α或其下游途径为胃粘膜疾病提供了潜在的治疗策略.
更多相关视频
06:53Visualization of Mitochondrial Respiratory Function using Cytochrome C Oxidase / Succinate Dehydrogenase COX/SDH Double-labeling Histochemistry
Published on: November 23, 2011
10:26Assessment of Mitochondrial Health in Cancer-Associated Fibroblasts Isolated from 3D Multicellular Lung Tumor Spheroids
Published on: October 21, 2022
相关概念视频
Gastritis-II: Pathophysiology
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
Electron Transport Chain: Complex I and II
ROS generation is regulated and maintained at moderate levels necessary...
Regulation of Angiogenesis and Blood Supply
Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors
