摘要
大肠杆菌生物膜是由聚集于特定介质上的大肠杆菌菌体细胞相互黏附并分泌胞外基质聚合物(extracellularpolymericsubstances,EPS)而产生的一种结构复杂的膜状聚集物。感染宿主后的致病性大肠杆菌在形成生物膜后会极大地逃避免疫系统以及环境中各种有害因素对其的影响,对宿主造成持续甚至致命的伤害。环二鸟苷酸(cyclic diguanosine monophosphate,c-di-GMP)是广泛存在于细菌中的第二信使,在调节生物膜形成过程中起到至关重要的作用。基于此,本文对近些年来有关c-di-GMP对大肠杆菌生物膜形成过程中菌体的运动、黏附以及EPS产生机制的研究进行了综述,以期为从c-di-GMP角度抑制大肠杆菌生物膜提供依据和思路。
Escherichia coli biofilm is a complex membrane aggregation produced by the adhesion and secretion of extracellular polymeric substances by E.coli cells aggregated on specific media.Pathogenic E.coli will evade the immune system and the impact of various harmful factors in the environment after the formation of biofilm,causing sustained and even fatal damage to the host.Cyclic diguanosine monophosphate(c-di-GMP)is a second messenger ubiquitous in bacteria and plays a crucial role in regulating biofilm formation.This paper reviewed the recent studies about the role of c-di-GMP in the movement,adhesion,and EPS production mechanism of E.coli during biofilm formation,aiming to provide a basis for inhibiting E.coli biofilm from the perspective of c-di-GMP.
作者
何云江
贾伟娟
郗珊珊
孟庆磊
陈云娇
王学理
HE Yunjiang;JIA Weijuan;CHI Shanshan;MENG Qinglei;CHEN Yunjiao;WANG Xueli(Animal Science and Technology College,Inner Mongolia Minzu University,Tongliao 028000,Inner Mongolia,China)
出处
《生物工程学报》
CAS
CSCD
北大核心
2022年第8期2811-2820,共10页
Chinese Journal of Biotechnology
基金
内蒙古自治区自然科学基金(2021LHMS03008)。
