CDH1基因编码E-钙黏蛋白(E-cadherin),这是一种重要的细胞黏附分子,属于钙黏蛋白基因家族(cadherin family)。钙黏蛋白家族的共性是通过钙离子依赖的方式介导细胞间的黏附,对维持组织结构和细胞极性至关重要。E-钙黏蛋白主要在上皮细胞中表达,通过其胞外结构域与相邻细胞的E-钙黏蛋白结合形成黏附连接(adherens junctions),而胞内结构域则与连环蛋白(catenin)结合,连接到细胞骨架(cytoskeleton),从而调控细胞形态、迁移和信号传导。CDH1基因突变会导致E-钙黏蛋白功能丧失,破坏细胞间黏附,增加细胞侵袭性,这与弥漫性胃癌(hereditary diffuse gastric cancer, HDGC)和乳腺小叶癌(lobular breast cancer)的发生密切相关。此外,CDH1的甲基化沉默或表达降低常见于多种上皮性肿瘤(如胃癌、乳腺癌、结直肠癌等),促进肿瘤转移。若CDH1过表达,通常增强细胞间黏附,抑制肿瘤侵袭和转移,但可能影响某些需要细胞迁移的生理过程(如胚胎发育或伤口愈合)。相反,CDH1表达降低会破坏上皮完整性,激活上皮-间质转化(EMT, epithelial-mesenchymal transition),促使癌细胞获得迁移能力。CDH1还与Wnt/β-catenin信号通路交互,其功能异常可能导致β-catenin游离入核,激活促癌基因。该基因的致病突变多为截短突变或错义突变,遗传性突变携带者需定期进行胃癌筛查。
This gene is a classical cadherin from the cadherin superfamily. The encoded protein is a calcium dependent cell-cell adhesion glycoprotein comprised of five extracellular cadherin repeats, a transmembrane region and a highly conserved cytoplasmic tail. Mutations in this gene are correlated with gastric, breast, colorectal, thyroid and ovarian cancer. Loss of function is thought to contribute to progression in cancer by increasing proliferation, invasion, and/or metastasis. The ectodomain of this protein mediates bacterial adhesion to mammalian cells and the cytoplasmic domain is required for internalization. Identified transcript variants arise from mutation at consensus splice sites. [provided by RefSeq, Jul 2008]
这个基因是从钙粘蛋白家族一个经典钙粘蛋白。所编码的蛋白质是由五个细胞外钙粘蛋白重复序列??,一个跨膜区和一个高度保守的胞质尾钙依赖性细胞 - 细胞粘着的糖蛋白。在这种基因突变与胃,乳房,结肠直肠,甲状腺癌和卵巢癌相关。功能丧失被认为通过提高增殖,侵袭和/或转移到向进展的癌症。这种蛋白的胞外域介导细菌粘附到哺乳动物细胞,并且需要用于内化的胞质域。鉴定转录变异体在一致剪接位点突变,从出现。 [由RefSeq的,2008年7月提供]
CDH1基因(以及对应的蛋白质)的细胞分布位置:
CDH1基因的本体(GO)信息:
名称 |
---|
4015 Rap1 signaling pathway [PATH:hsa04015] |
4390 Hippo signaling pathway [PATH:hsa04390] |
4514 Cell adhesion molecules (CAMs) [PATH:hsa04514] |
4520 Adherens junction [PATH:hsa04520] |
5200 Pathways in cancer [PATH:hsa05200] |
5216 Thyroid cancer [PATH:hsa05216] |
5218 Melanoma [PATH:hsa05218] |
5219 Bladder cancer [PATH:hsa05219] |
5213 Endometrial cancer [PATH:hsa05213] |
5130 Pathogenic Escherichia coli infection [PATH:hsa05130] |
5100 Bacterial invasion of epithelial cells [PATH:hsa05100] |
名称 |
---|
Adaptive Immune System |
Adherens junctions interactions |
Apoptosis |
Apoptotic cleavage of cell adhesion proteins |
Apoptotic cleavage of cellular proteins |
Apoptotic execution phase |
Cell junction organization |
Cell-Cell communication |
Cell-cell junction organization |
Degradation of the extracellular matrix |
Extracellular matrix organization |
Immune System |
Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell |
Integrin cell surface interactions |
Programmed Cell Death |
RHO GTPase Effectors |
RHO GTPases activate IQGAPs |
Signal Transduction |
Signaling by Rho GTPases |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Hereditary Diffuse Gastric Cancer | 0.388501397 | 107 | 20 | BeFree_CLINVAR_ORPHANET_UNIPROT |
Stomach Neoplasms | 0.338979861 | 43 | 1 | BeFree_CLINVAR_CTD_human_GAD_LHGDN |
ovarian neoplasm | 0.247815732 | 4 | 1 | CLINVAR_CTD_human_GAD_LHGDN |
Bladder Neoplasm | 0.210540083 | 6 | 0 | CTD_human_GAD_LHGDN_RGD |
Neoplasm Metastasis | 0.176880324 | 75 | 0 | BeFree_CTD_human_LHGDN |
Prostatic Neoplasms | 0.172034096 | 22 | 0 | BeFree_CTD_human_LHGDN |
Colorectal Cancer | 0.171292716 | 43 | 11 | BeFree_GAD_GWASCAT |
Squamous cell carcinoma | 0.168671055 | 26 | 0 | BeFree_CTD_human_GAD_LHGDN |
Colorectal Neoplasms | 0.163775169 | 19 | 1 | BeFree_CTD_human_GAD_LHGDN |
Mammary Neoplasms | 0.153506529 | 18 | 0 | BeFree_CTD_human_LHGDN |
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