CCR8(C-C趋化因子受体8,C-C chemokine receptor 8)是一种G蛋白偶联受体(GPCR),属于趋化因子受体家族,主要表达于免疫细胞如Th2型辅助T细胞、调节性T细胞(Treg)和某些肿瘤浸润淋巴细胞。其配体包括CCL1(I-309)和CCL18等趋化因子,通过激活下游信号通路(如MAPK、PI3K)调控细胞迁移、增殖和免疫应答。CCR8在免疫调节中发挥关键作用,尤其在Th2型免疫反应(如过敏、哮喘)和肿瘤微环境中,可促进Treg细胞的募集和免疫抑制功能。基因突变可能导致受体功能异常,如信号传导减弱或过度激活,影响免疫平衡,与过敏性疾病、自身免疫病及某些癌症(如乳腺癌、黑色素瘤)的进展相关。CCR8过表达可能增强免疫抑制性微环境,促进肿瘤免疫逃逸,而敲低或抑制CCR8可增强抗肿瘤免疫反应。该基因属于CCR家族(含CCR1-CCR10),家族共性为通过识别CC类趋化因子调控白细胞迁移和炎症反应。目前针对CCR8的抗体药物(如抗CCR8单抗)正被开发用于癌症免疫治疗,通过阻断Treg功能激活抗肿瘤免疫。专业术语解释:G蛋白偶联受体(GPCR)为跨膜蛋白,通过G蛋白传递细胞外信号;趋化因子(chemokine)是一类引导细胞定向迁移的小分子蛋白;Th2/Treg为T细胞亚群,分别参与过敏反应和免疫抑制。
This gene encodes a member of the beta chemokine receptor family, which is predicted to be a seven transmembrane protein similar to G protein-coupled receptors. Chemokines and their receptors are important for the migration of various cell types into the inflammatory sites. This receptor protein preferentially expresses in the thymus. I-309, thymus activation-regulated cytokine (TARC) and macrophage inflammatory protein-1 beta (MIP-1 beta) have been identified as ligands of this receptor. Studies of this receptor and its ligands suggested its role in regulation of monocyte chemotaxis and thymic cell apoptosis. More specifically, this receptor may contribute to the proper positioning of activated T cells within the antigenic challenge sites and specialized areas of lymphoid tissues. This gene is located at the chemokine receptor gene cluster region. [provided by RefSeq, Jul 2008]
该基因编码的测试趋化因子受体家族,其被预测为类似于G蛋白偶联受体具有七次跨膜蛋白的成员。趋化因子及其受体对各种细胞类型的迁移进入炎症部位重要。该受体蛋白优先地表达在胸腺。 Ⅰ-309,胸腺活化调节的细胞因子(TARC)和巨噬细胞炎性蛋白-1β(MIP-1β)已被确定为该受体的配体。这种受体的研究及其配体建议其在单核细胞趋和胸腺细胞凋亡调控作用。更具体地,该受体可能有助于活化的T细胞的抗原刺激部位和淋巴组织的专门领域内的正确定位。该基因位于趋化因子受体基因簇的区域。 [由RefSeq的,2008年7月提供]
CCR8基因(以及对应的蛋白质)的细胞分布位置:
CCR8基因的本体(GO)信息:
名称 |
---|
4060 Cytokine-cytokine receptor interaction [PATH:hsa04060] |
4062 Chemokine signaling pathway [PATH:hsa04062] |
5203 Viral carcinogenesis [PATH:hsa05203] |
名称 |
---|
Chemokine receptors bind chemokines |
Class A/1 (Rhodopsin-like receptors) |
G alpha (i) signalling events |
GPCR downstream signaling |
GPCR ligand binding |
Peptide ligand-binding receptors |
Signal Transduction |
Signaling by GPCR |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Status Epilepticus | 0.12 | 1 | 0 | CTD_human |
Asthma | 0.080542884 | 3 | 0 | BeFree_RGD |
Pulmonary Fibrosis | 0.08 | 1 | 0 | RGD |
Endometriosis | 0.002995792 | 1 | 0 | BeFree_LHGDN |
Inflammation | 0.00272435 | 1 | 0 | LHGDN |
Chronic Lymphocytic Leukemia | 0.002638474 | 2 | 0 | BeFree_GAD |
HIV Infections | 0.001357209 | 5 | 0 | BeFree |
Diffuse Large B-Cell Lymphoma | 0.000542884 | 2 | 0 | BeFree |
Eczema | 0.000542884 | 2 | 0 | BeFree |
Dermatitis, Atopic | 0.000542884 | 2 | 0 | BeFree |
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