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Toll样受体2在器官移植排斥免疫中的作用

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摘要 随着现代医学的不断发展,在过去的50多年中,器官移植作为脏器功能衰竭终末期的一种治疗方法取得了前所未有的成功。尽管如此,移植相关并发症仍制约了器官移植的进一步发展。其中,移植物排斥是移植后移植物失能的主要原因。虽然最初的排斥反应由宿主机体获得性免疫系统中T淋巴细胞引起,但最新证据表明先天免疫系统也起着重要作用。 Toll样受体是连接先天性免疫与获得性免疫的桥梁,而Toll样受体2( TLR2)是目前已克隆的人类TLRs家族中表达范围最广、识别病原微生物及其产物种类最多的分子。它分布于抗原提呈细胞、炎症细胞、多种组织细胞以及肿瘤细胞等,在细菌、真菌、病毒及其他一些病原体感染中发挥先天性免疫作用,并通过其胞内信号转导而连接获得性免疫。与其他TLR相比,TLR2更有特点:其他TLR需与TLR2形成复合体而发挥作用。近年来, TLR2在器官移植排斥反应中的作用越来越受到关注,它在移植免疫排斥反应中扮演着怎样的角色呢?本文将对此作一综述,旨在探讨其关键作用及可利用的治疗靶点。
作者 郑艳华 白浪
出处 《中国免疫学杂志》 CAS CSCD 北大核心 2014年第7期982-984,987,共4页 Chinese Journal of Immunology
基金 国家自然科学基金项目(No.81170887) 广东省自然科学基金(No.S2012010008946)资助
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