The C5a receptor also known as complement component 5a receptor 1 (C5AR1) or CD88 (Cluster of Differentiation 88) is a G protein-coupled receptor for C5a. It functions as a complement receptor. [5] C5a receptor 1 modulates inflammatory responses, obesity, development and cancers.

设立分化簇 (CD) 命名系统的目的是对白细胞表面抗原进行分类。 最初，表面抗原是根据与它们结合的对应单克隆抗体进行命名。 随着各实验室逐渐发现抗原常能刺激产生多种单克隆抗体，因此需要采用一种统一的命名系统。 1982 年于巴黎举行的第 1 届国际人类白细胞分化抗原专题讨论会 (HLDA) 上通过了目前使用的命名系统。 根据该命名系统，已经充分表征的抗原将会分配数字（例如，CD1、CD2 等），而对于仅有一种单克隆抗体可以识别的抗原分子，则分配临时名 …

In a manner that requires activation of the alternative complement pathway, passive transfer of antibodies to mouse MPO (anti-MPO) induces a mouse model of ANCA NCGN that closely mimics human disease. Here, we confirm the importance of C5aR/CD88 in the mediation of anti-MPO-induced NCGN and report that C6 is not required.

Transcriptional analyses identify ITGAX- (CD11c), C5AR1- (CD88), and BST2- (CD317) expressing cells as a distinct myeloid subset in human cerebrospinal fluid. The disease-propagating effects of these cells in experimental autoimmune encephalomyelitis can be effectively antagonized using anti-CD317 monoclonal antibody therapy.

2019年6月15日 · Complement activation generates the core effector protein C5a, a potent immune molecule that is linked to multiple inflammatory diseases. Two C5a receptors, C5aR1 (C5aR, CD88) and C5aR2 (C5L2, GPR77), mediate the biological activities of C5a.

2021年4月6日 · In human cerebrospinal fluid from subjects with neuroinflammation, microglia-like cells display coincident expression of ITGAX (CD11c), C5AR1 (CD88), and BST2 (CD317). In mice, we show that only activated, but not naïve microglia expressed CD11c, CD88, and CD317.

2025年2月8日 · C5A; C5AR; C5R1; CD88 Summary Enables G protein-coupled receptor activity and complement component C5a receptor activity. Involved in several processes, including complement component C5a signaling pathway; mRNA transcription by RNA polymerase II; and positive regulation of ERK1 and ERK2 cascade.

2020年7月29日 · The C5a complement factor and its receptor C5aR1 (also known as CD88) have a key role in the initiation and maintenance of several inflammatory responses by recruiting and activating neutrophils...

C5a binds to at least two seven-transmembrane domain receptors, C5aR (C5R1, CD88) and C5L2 (gpr77), expressed ubiquitously on a wide variety of cells but particularly on the surface of immune cells like macrophages, neutrophils and T cells.

2009年11月16日 · In the periphery, C5a acts through the G-protein coupled receptor CD88 to enhance/maintain inflammatory responses. In the brain, CD88 can be expressed on astrocytes, microglia and neurons. Previous studies have shown that the hippocampal CA3 region displays CD88-immunolabelling, and CD88 mRNA is present within dentate gyrus granule cells.