活性氧介导NF-κB信号通路在消化系统疾病中的研究进展
2020-07-04刘红陈紫红左寒冬
刘红 陈紫红 左寒冬
【摘 要】核因子κB(NF-κB)是一种普遍存在于多种细胞质中,参与调节多种炎性反应的早期转录因子,活性氧(ROS)是一种细胞代谢或是外源性因素刺激产生的机体信号转导分子,可参与细胞凋亡、基因表达、信号转导等机体生理功能。众所周知,炎症在消化系统疾病的发生发展中至关重要,而NF-κB信号通路是重要的慢性炎症信号通路,随着研究的深入,不断有学者提出ROS可以介导NF-κB信号通路参与各系统疾病的发生发展,本文将对近年来ROS介导NF-κB信号通路在消化系统疾病中的研究进展作一综述。
【关键词】活性氧(ROS);核因子κB(NF-κB);消化系统疾病;综述
【Abstract】Nuclear factor-κB (NF-κB) is an early transcription factor that is ubiquitous in a variety of cytoplasm and participates in the regulation of a variety of inflammatory responses. Reactive oxygen species (ROS) is a signal transduction molecule produced by cell metabolism or exogenous factors, which can participate in cell apoptosis, gene expression, signal transduction and other physiological functions of the body.It is well known that inflammation in the development of digestive system disease is crucial, and the NF-κB signaling pathway is an important chronic inflammatory signaling pathways, with the deepening of the research, some scholars put forward continuously ROS can be mediated the NF-κB signaling pathways involved in each system disease development, this review will review the research progress of ROS-mediated NF-κB signaling pathway in digestive system diseases.
【Keywords】 reactive oxygen species(ROS);nuclear factor-κB (NF-κB) ;diseases of the digestive system;review
在氧被還原时因获得电子数不同会形成多种不同的产物,有些产物具有很强的氧化活性,是已知最强的氧化剂之一,人们把这种含有氧元素且较O2活泼的分子或自由基统称为活性氧( reactive oxygen species,ROS),起初认为ROS是细胞代谢的正常副产物,由细胞代谢过程中活性氧过量产生,包括过氧化氢( H2O2 )、超氧阴离子(O2-) 、羟自由基(-OH) 等,但随着研究的深入,人们发现ROS不仅可由细胞正常代谢产生,也可由外源性因素刺激产生,是机体重要的信号转导分子。一切需氧生物均能产生ROS,正常ROS可参与细胞凋亡、基因表达、信号转导等机体生理功能,因为机体内含有可灭活某些ROS的酶以及各种水溶性、脂溶性抗氧化剂等组成的防御系统,能将ROS转变为活性较低的物质,使得机体氧化性损伤趋势与抗氧化防御系统在正常生理情况下处于动态平……
