COCH基因(也称为cochlin基因)位于人类第14号染色体上,编码一种称为cochlin的蛋白质,主要在内耳中表达。cochlin蛋白是内耳中含量最丰富的非胶原蛋白之一,由三个结构域组成:LIM结构域、LCCL结构域和vWFA结构域。它在维持内耳结构和功能中起重要作用,特别是与听觉和前庭系统的正常功能相关。COCH基因突变与常染色体显性遗传的非综合征性耳聋(DFNA9)密切相关,这是一种进行性听力损失伴随前庭功能障碍的疾病。突变通常导致蛋白质错误折叠或功能异常,进而引发内耳毛细胞和神经结构的退化。COCH基因属于LCCL结构域蛋白家族,该家族成员通常参与细胞外基质的形成和细胞间信号传导。COCH过表达可能导致内耳中异常蛋白积累,干扰正常听觉功能;而表达降低则可能影响内耳结构的完整性,导致听力障碍。此外,COCH基因的异常表达还与梅尼埃病等内耳疾病有关。研究表明,COCH蛋白可能参与调节内耳中的细胞外基质稳态和炎症反应。由于其在听觉系统中的重要作用,COCH基因已成为研究遗传性耳聋的重要靶点之一。
The protein encoded by this gene is highly conserved in human, mouse, and chicken, showing 94% and 79% amino acid identity of human to mouse and chicken sequences, respectively. Hybridization to this gene was detected in spindle-shaped cells located along nerve fibers between the auditory ganglion and sensory epithelium. These cells accompany neurites at the habenula perforata, the opening through which neurites extend to innervate hair cells. This and the pattern of expression of this gene in chicken inner ear paralleled the histologic findings of acidophilic deposits, consistent with mucopolysaccharide ground substance, in temporal bones from DFNA9 (autosomal dominant nonsyndromic sensorineural deafness 9) patients. Mutations that cause DFNA9 have been reported in this gene. Alternative splicing results in multiple transcript variants encoding the same protein. Additional splice variants encoding distinct isoforms have been described but their biological validities have not been demonstrated. [provided by RefSeq, Oct 2008]
由该基因编码的蛋白质是高度分别保守在人,小鼠和鸡,示出对小鼠和鸡的序列的人类的94%和79%的氨基酸同一性。在沿听神经节和感觉上皮之间的神经纤维位于梭形细胞中检测到杂交该基因。这些细胞在缰核perforata陪突起,开通过突起延伸到支配的毛细胞。这与该基因在鸡内耳的表达模式并联嗜酸存款,以粘多糖地面物质相一致,在颞骨的组织学发现从DFNA9(常染色体显性非综合征耳聋9)的患者。引起DFNA9突变已报道了基因。在多个转录剪接的结果变体编码相同的蛋白质。编码不同同种型的其他剪接变体已被描述,但它们的生物效度都没有被证明。 [由RefSeq的,2008年10月提供]
COCH基因(以及对应的蛋白质)的细胞分布位置:
COCH基因的本体(GO)信息:
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| Deafness, Autosomal Dominant 9 | 0.320271442 | 9 | 1 | BeFree_CTD_human_MGD_UNIPROT |
| Sensorineural Hearing Loss (disorder) | 0.005167327 | 10 | 1 | BeFree_LHGDN |
| Hearing Loss, Mixed Conductive-Sensorineural | 0.003257302 | 12 | 0 | BeFree |
| Deafness | 0.00272435 | 1 | 0 | LHGDN |
| hearing impairment | 0.00272435 | 1 | 0 | LHGDN |
| Diseases of inner ear | 0.001357209 | 5 | 0 | BeFree |
| Vestibular Diseases | 0.001085767 | 4 | 0 | BeFree |
| Hearing problem | 0.000814326 | 3 | 0 | BeFree |
| Nonsyndromic Deafness | 0.000814326 | 3 | 0 | BeFree |
| Autoimmune sensorineural hearing loss | 0.000542884 | 2 | 0 | BeFree |
山东省济南市章丘区文博路2号 齐鲁师范学院 genelibs生信实验室
山东省济南市高新区舜华路750号大学科技园北区F座4单元2楼
电话: 0531-88819269
E-mail: product@genelibs.com
关注微信订阅号,实时查看信息,关注医学生物学动态。