CD247基因编码T细胞受体(TCR)复合物的ζ链(CD3ζ),是T细胞表面TCR-CD3复合体的关键组成部分。TCR-CD3复合体负责识别抗原并激活T细胞免疫应答。CD247的生物学功能主要体现在它与CD3γ、δ、ε链共同形成CD3复合物,将TCR与抗原结合的信号传递到细胞内,启动下游信号通路(如ZAP-70激酶活化),最终导致T细胞增殖、分化及细胞因子释放。其主要作用位点是T细胞膜,与TCRαβ或TCRγδ异二聚体非共价结合。CD247突变会导致严重免疫缺陷,如T细胞信号传导障碍,表现为反复感染或自身免疫病。它与某些疾病密切相关,例如CD247表达异常与系统性红斑狼疮(SLE)等自身免疫疾病相关,其低表达可能导致免疫耐受失衡。若CD247过表达,可能增强T细胞活性,但过度激活会引发自身免疫反应;若表达降低,则导致T细胞功能缺陷,增加感染风险或肿瘤免疫逃逸。CD247属于CD3基因家族,该家族成员(CD3γ、δ、ε、ζ)均编码TCR-CD3复合物的跨膜蛋白,共同特点是胞内段含有免疫受体酪氨酸激活基序(ITAM),用于传递抗原识别信号。CD3家族基因的共性是通过ITAM结构域募集下游信号分子,调控T细胞发育和功能。专业术语解释:TCR(T细胞受体)是T细胞识别抗原的膜蛋白;ITAM(免疫受体酪氨酸激活基序)是信号转导中磷酸化的酪氨酸残基模体;ZAP-70是一种参与T细胞激活的酪氨酸激酶。若术语"ζ链"翻译不准确,可备注为CD3ζ chain。
The protein encoded by this gene is T-cell receptor zeta, which together with T-cell receptor alpha/beta and gamma/delta heterodimers, and with CD3-gamma, -delta and -epsilon, forms the T-cell receptor-CD3 complex. The zeta chain plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. Low expression of the antigen results in impaired immune response. Two alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
由该基因编码的蛋白质是T细胞受体ζ电,其与T细胞受体α/β和γ/三角异在一起,并用CD3-γ, - 三角洲和-epsilon,形成T细胞受体CD3复合。的ζ链起着抗原识别耦合到几个细胞内信号转导途径中起重要作用。在免疫反应受损抗原结果的低表达。已经发现了这个基因编码两种不同亚型选择性剪接转录变异体。 [由RefSeq的,2008年7月提供]
CD247基因(以及对应的蛋白质)的细胞分布位置:
CD247基因的本体(GO)信息:
名称 |
---|
4650 Natural killer cell mediated cytotoxicity [PATH:hsa04650] |
4660 T cell receptor signaling pathway [PATH:hsa04660] |
5142 Chagas disease (American trypanosomiasis) [PATH:hsa05142] |
名称 |
---|
Adaptive Immune System |
Costimulation by the CD28 family |
Disease |
Downstream TCR signaling |
Fcgamma receptor (FCGR) dependent phagocytosis |
FCGR activation |
Generation of second messenger molecules |
HIV Infection |
Host Interactions of HIV factors |
Immune System |
Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell |
Infectious disease |
Innate Immune System |
Nef and signal transduction |
PD-1 signaling |
Phosphorylation of CD3 and TCR zeta chains |
Regulation of actin dynamics for phagocytic cup formation |
Role of phospholipids in phagocytosis |
TCR signaling |
The role of Nef in HIV-1 replication and disease pathogenesis |
Translocation of ZAP-70 to Immunological synapse |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Systemic Scleroderma | 0.24554839 | 5 | 5 | BeFree_CTD_human_GAD_GWASCAT |
Immunodeficiency due to Defect in CD3-Zeta | 0.24 | 0 | 5 | CLINVAR_CTD_human |
Celiac Disease | 0.122638474 | 2 | 1 | BeFree_GAD_GWASCAT |
Lupus Erythematosus, Systemic | 0.025055986 | 30 | 0 | BeFree_GAD_LHGDN |
Rheumatoid Arthritis | 0.005005506 | 3 | 1 | BeFree_GAD |
Autoimmune Diseases | 0.003995683 | 7 | 3 | BeFree_GAD |
Degenerative polyarthritis | 0.002995792 | 1 | 0 | BeFree_LHGDN |
Tuberculosis, Pulmonary | 0.00272435 | 1 | 0 | LHGDN |
Stomach Neoplasms | 0.00272435 | 1 | 0 | LHGDN |
Acute Coronary Syndrome | 0.00272435 | 1 | 0 | LHGDN |
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