先天免疫是抵御病毒感染的第一道防线.戊型肝炎病毒(Hepatitis E Virus,HEV)感染免疫健全人群导致急性自限性疾病,但免疫功能低下患者或孕妇感染HEV后会导致慢性化感染.HEV感染宿主细胞后,体内的模式识别受体(pat-tern recognition receptors,PRRs)将识别病毒基因组,进而诱导宿主多条抗病毒信号通路快速激活,使干扰素(Interferons,IFNs)和干扰素刺激基因(Interferon-stimulated genes,ISGs)表达,从而抑制病毒的复制.而HEV编码的蛋白参与 了逃逸宿主的抗病毒先天免疫反应,抑制宿主细胞因子或趋化因子的产生,从而建立适宜病毒复制的环境.现将HEV感染对宿主信号通路的调控以及HEV逃逸宿主先天免疫的研究进行综述.
Research progress in the regulation of host antiviral signaling pathways by hepatitis E virus infection
Innate immunity is the first line of defense against viral infection.Hepatitis E virus(HEV)infection usually cau-ses acute self-limiting diseases in immunocompetent patients,but results in chronic infection in immunocompromised patients or pregnant people.After HEV infects host cells,pattern recognition receptors(PRRs)recognize the viral genome,thus indu-cing rapid activation of multiple antiviral signal pathways in the host immune system,and the expression of interferons(IFNs)and interferon stimulated genes(ISGs),and consequently inhibiting viral replication.To escape host antiviral responses,HEV encoded proteins regulate host antiviral signal pathways and subsequently inhibit antiviral responses,such as those involving cytokines or chemokines.The regulation of host signal pathways by HEV infection and the escape of HEV from host innate im-munity are reviewed herein.
hepatitis E virusinnate immunitysignal pathwaysimmune escapeinterferon
万方数据
维普
