TREM1 Q9NP99

髓系细胞表达触发受体1 (TREM-1) (单核细胞表达触发受体1) (CD抗原 CD354)

功能描述

[Isoform 1]: Cell surface receptor that plays important roles in innate and adaptive immunity by amplifying inflammatory responses (PubMed:10799849, PubMed:21393102). Upon activation by various ligands such as PGLYRP1, HMGB1 or HSP70, multimerizes and forms a complex with transmembrane adapter TYROBP/DAP12 (PubMed:17568691, PubMed:25595774, PubMed:29568119). In turn, initiates a SYK-mediated cascade of tyrosine phosphorylation, activating multiple downstream mediators such as BTK, MAPK1, MAPK3 or phospholipase C-gamma (PubMed:14656437, PubMed:21659545). This cascade promotes the neutrophil- and macrophage-mediated release of pro-inflammatory cytokines and/or chemokines, as well as their migration and thereby amplifies inflammatory responses that are triggered by bacterial and fungal infections (PubMed:17098818, PubMed:17568691). By also promoting the amplification of inflammatory signals that are initially triggered by Toll-like receptor (TLR) and NOD-like receptor engagement, plays a major role in the pathophysiology of acute and chronic inflammatory diseases of different etiologies including septic shock and atherosclerosis (PubMed:11323674, PubMed:21393102). {ECO:0000269|PubMed:10799849, ECO:0000269|PubMed:11323674, ECO:0000269|PubMed:14656437, ECO:0000269|PubMed:17098818, ECO:0000269|PubMed:17568691, ECO:0000269|PubMed:21393102, ECO:0000269|PubMed:21659545, ECO:0000269|PubMed:25595774, ECO:0000269|PubMed:29568119}.; FUNCTION: [Isoform 2]: Acts as a decoy receptor, counterbalancing TREM1 pro-inflammatory activity through the neutralization of its ligand. {ECO:0000269|PubMed:26561551}.

组织特异性

Mostly expressed by immune cells of the myeloid lineage, such as monocytes, macrophages, neutrophils and dendritic cells (PubMed:10799849). Expression is associated with a mature stage of myeloid development (PubMed:11922939). Highly expressed in adult liver, lung and spleen than in corresponding fetal tissue. Also expressed in the lymph node, placenta, spinal cord and heart tissues. Isoform 2 was detected in the lung, liver and mature monocytes.

亚细胞定位

[Isoform 1]: Cell membrane