Cochlin is a protein that in humans is encoded by the COCHgene.[1][2]
Function
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.[2]
References
↑Robertson NG, Lu L, Heller S, Merchant SN, Eavey RD, McKenna M, Nadol JB Jr, Miyamoto RT, Linthicum FH Jr, Lubianca Neto JF, Hudspeth AJ, Seidman CE, Morton CC, Seidman JG (Nov 1998). "Mutations in a novel cochlear gene cause DFNA9, a human nonsyndromic deafness with vestibular dysfunction". Nat Genet. 20 (3): 299–303. doi:10.1038/3118. PMID9806553.
Khetarpal U, Schuknecht HF, Gacek RR, Holmes LB (1991). "Autosomal dominant sensorineural hearing loss. Pedigrees, audiologic findings, and temporal bone findings in two kindreds". Arch. Otolaryngol. Head Neck Surg. 117 (9): 1032–42. doi:10.1001/archotol.1991.01870210104022. PMID1910721.
Robertson NG, Khetarpal U, Gutiérrez-Espeleta GA, et al. (1995). "Isolation of novel and known genes from a human fetal cochlear cDNA library using subtractive hybridization and differential screening". Genomics. 23 (1): 42–50. doi:10.1006/geno.1994.1457. PMID7829101.
Khetarpal U (1993). "Autosomal dominant sensorineural hearing loss. Further temporal bone findings". Arch. Otolaryngol. Head Neck Surg. 119 (1): 106–8. doi:10.1001/archotol.1993.01880130108016. PMID8417734.
Manolis EN, Yandavi N, Nadol JB, et al. (1997). "A gene for non-syndromic autosomal dominant progressive postlingual sensorineural hearing loss maps to chromosome 14q12-13". Hum. Mol. Genet. 5 (7): 1047–50. doi:10.1093/hmg/5.7.1047. PMID8817345.
Robertson NG, Skvorak AB, Yin Y, et al. (1998). "Mapping and characterization of a novel cochlear gene in human and in mouse: a positional candidate gene for a deafness disorder, DFNA9". Genomics. 46 (3): 345–54. doi:10.1006/geno.1997.5067. PMID9441737.
de Kok YJ, Bom SJ, Brunt TM, et al. (1999). "A Pro51Ser mutation in the COCH gene is associated with late onset autosomal dominant progressive sensorineural hearing loss with vestibular defects". Hum. Mol. Genet. 8 (2): 361–6. doi:10.1093/hmg/8.2.361. PMID9931344.
Fransen E, Verstreken M, Verhagen WI, et al. (1999). "High prevalence of symptoms of Menière's disease in three families with a mutation in the COCH gene". Hum. Mol. Genet. 8 (8): 1425–9. doi:10.1093/hmg/8.8.1425. PMID10400989.
Kamarinos M, McGill J, Lynch M, Dahl H (2001). "Identification of a novel COCH mutation, I109N, highlights the similar clinical features observed in DFNA9 families". Hum. Mutat. 17 (4): 351. doi:10.1002/humu.37. PMID11295836.
Boulassel MR, Tomasi JP, Deggouj N, Gersdorff M (2001). "COCH5B2 is a target antigen of anti-inner ear antibodies in autoimmune inner ear diseases". Otol. Neurotol. 22 (5): 614–8. doi:10.1097/00129492-200109000-00009. PMID11568667.
Robertson NG, Resendes BL, Lin JS, et al. (2002). "Inner ear localization of mRNA and protein products of COCH, mutated in the sensorineural deafness and vestibular disorder, DFNA9". Hum. Mol. Genet. 10 (22): 2493–500. doi:10.1093/hmg/10.22.2493. PMID11709536.
Lemaire FX, Feenstra L, Huygen PL, et al. (2004). "Progressive late-onset sensorineural hearing loss and vestibular impairment with vertigo (DFNA9/COCH): longitudinal analyses in a belgian family". Otol. Neurotol. 24 (5): 743–8. doi:10.1097/00129492-200309000-00009. PMID14501450.
Usami S, Takahashi K, Yuge I, et al. (2004). "Mutations in the COCH gene are a frequent cause of autosomal dominant progressive cochleo-vestibular dysfunction, but not of Ménière's disease". Eur. J. Hum. Genet. 11 (10): 744–8. doi:10.1038/sj.ejhg.5201043. PMID14512963.
Anderson NL, Polanski M, Pieper R, et al. (2004). "The human plasma proteome: a nonredundant list developed by combination of four separate sources". Mol. Cell. Proteomics. 3 (4): 311–26. doi:10.1074/mcp.M300127-MCP200. PMID14718574.