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Emerging roles for scavenger receptor SREC-I in immunity

机译:清道夫受体SREC-1在免疫中的新兴作用

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摘要

SREC-I is a class F scavenger receptor with key role in the immune response, particularly in antigen presenting cell (APC) such as macrophages and dendritic cells (DC). This receptor is able to mediate engulfment of dead cells as well as endocytosis of heat shock protein (HSP)-antigen complexes. SREC-I could thus potentially mediate the tolerizing influence of apoptotic cells or the immunostimulatory effects of HSP-peptide complexes, depending on context. This receptor was able to mediate presentation of external antigens, bound to HSPs through both the class II pathway as well as cross presentation via MHC class I complexes. In addition to its recently established role in adaptive immunity, emerging studies are indicating a broad role in innate immunity and regulation of cell signaling through Toll Like Receptors (TLR). SREC-I may thus play a key role in APC function by coordinating immune responses to internal and external antigens in APC. (C) 2015 Elsevier Ltd. All rights reserved.
机译:SREC-1是F类清道夫受体,在免疫应答中起关键作用,特别是在抗原呈递细胞(APC)如巨噬细胞和树突状细胞(DC)中。该受体能够介导死细胞的吞噬以及热休克蛋白(HSP)-抗原复合物的内吞作用。因此,根据情况,SREC-1可能会介导凋亡细胞的耐受性影响或HSP肽复合物的免疫刺激作用。该受体能够介导通过II类途径与HSP结合的外部抗原的呈递,以及通过MHC I类复合物的交叉呈递。除了其最近在适应性免疫中确立的作用外,新兴研究表明在先天免疫和通过Toll样受体(TLR)调控细胞信号传导中也具有广泛的作用。因此,SREC-1可能通过协调对APC中内部和外部抗原的免疫应答而在APC功能中发挥关键作用。 (C)2015 Elsevier Ltd.保留所有权利。

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