CCR7(C-C趋化因子受体7,C-C chemokine receptor 7)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T细胞、B细胞和树突状细胞)。其配体是趋化因子CCL19和CCL21,通过结合配体激活下游信号通路(如PI3K/AKT和MAPK),引导免疫细胞迁移至次级淋巴器官(如淋巴结和脾脏),在免疫监视和适应性免疫应答中起核心作用。CCR7的功能特点包括介导淋巴细胞归巢(lymphocyte homing)和树突状细胞的成熟迁移,对免疫系统的稳态和炎症反应调控至关重要。若CCR7发生功能丧失性突变(如错义突变或截短突变),可能导致免疫细胞迁移障碍,引发罕见免疫缺陷病或淋巴组织发育异常;而获得性突变可能促进肿瘤细胞通过CCR7-CCL19/21轴转移至淋巴结,加剧癌症扩散。CCR7过表达常见于多种恶性肿瘤(如乳腺癌、黑色素瘤),与淋巴结转移和预后不良相关,因其帮助肿瘤细胞模拟免疫细胞的迁移机制;反之,CCR7低表达可能导致免疫细胞无法有效定位,削弱抗感染或抗肿瘤免疫应答。CCR7属于趋化因子受体家族(Chemokine receptor family),该家族成员均含7次跨膜结构,通过结合趋化因子调控细胞迁移和炎症反应。家族共性包括:依赖G蛋白传递信号、参与白细胞趋化(chemotaxis)及炎症或免疫调节。目前针对CCR7的治疗策略包括小分子抑制剂(如阻断CCL19/21结合)或单克隆抗体,用于抑制癌症转移或调节自身免疫疾病。专业术语解释:G蛋白偶联受体(GPCR)是细胞膜上通过G蛋白传递信号的受体;趋化因子(chemokine)是一类引导细胞定向迁移的小分子蛋白;归巢(homing)指细胞定向迁移至特定组织的过程。
The protein encoded by this gene is a member of the G protein-coupled receptor family. This receptor was identified as a gene induced by the Epstein-Barr virus (EBV), and is thought to be a mediator of EBV effects on B lymphocytes. This receptor is expressed in various lymphoid tissues and activates B and T lymphocytes. It has been shown to control the migration of memory T cells to inflamed tissues, as well as stimulate dendritic cell maturation. The chemokine (C-C motif) ligand 19 (CCL19/ECL) has been reported to be a specific ligand of this receptor. Signals mediated by this receptor regulate T cell homeostasis in lymph nodes, and may also function in the activation and polarization of T cells, and in chronic inflammation pathogenesis. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Sep 2014]
由该基因编码的蛋白质是G蛋白偶联受体家族的一个成员。这种受体被鉴定为通过Epstein-Barr病毒(EBV)诱导的基因,并且被认为是对B淋巴细胞EBV效果的介质。此受体在各种淋巴组织中表达和激活B和T淋巴细胞。它已经显示记忆性T细胞的迁移控制到发炎组织中,以及刺激树突细胞成熟。趋化因子(C-C基序)配体19(CCL19 / ECL)已被报道为这种受体的特异性配体。通过该受体介导的信号调节T细胞稳态在淋巴结,并且也可以起到在T细胞的激活和偏振,和慢性炎症的发病机制。这个基因的选择性剪接的结果在多个转录变体。 [由RefSeq的,2014年9月提供]
CCR7基因(以及对应的蛋白质)的细胞分布位置:
CCR7基因的本体(GO)信息:
名称 |
---|
4060 Cytokine-cytokine receptor interaction [PATH:hsa04060] |
4062 Chemokine signaling pathway [PATH:hsa04062] |
5202 Transcriptional misregulation in cancers [PATH:hsa05202] |
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 |
Adult T-Cell Lymphoma/Leukemia | 0.120271442 | 2 | 0 | BeFree_CTD_human |
Status Epilepticus | 0.12 | 1 | 0 | CTD_human |
Sjogren's Syndrome | 0.08 | 0 | 0 | MGD |
Neoplasm Metastasis | 0.023946474 | 33 | 0 | BeFree_LHGDN |
Leukemia, Myelocytic, Acute | 0.016829396 | 62 | 0 | BeFree |
leukemia | 0.014386419 | 53 | 0 | BeFree |
Chronic Lymphocytic Leukemia | 0.009987267 | 10 | 7 | BeFree_GAD_LHGDN |
Mammary Neoplasms | 0.008715934 | 4 | 0 | BeFree_LHGDN |
melanoma | 0.008715934 | 3 | 0 | BeFree_LHGDN |
Myeloid Leukemia | 0.007057489 | 26 | 0 | BeFree |
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