» Articles » PMID: 24454846

Expression and Replication Studies to Identify New Candidate Genes Involved in Normal Hearing Function

Overview
Journal PLoS One
Date 2014 Jan 24
PMID 24454846
Citations 26
Authors
Affiliations
Soon will be listed here.
Abstract

Considerable progress has been made in identifying deafness genes, but still little is known about the genetic basis of normal variation in hearing function. We recently carried out a Genome Wide Association Study (GWAS) of quantitative hearing traits in southern European populations and found several SNPs with suggestive but none with significant association. In the current study, we followed up these SNPs to investigate which of them might show a genuine association with auditory function using alternative approaches. Firstly, we generated a shortlist of 19 genes from the published GWAS results. Secondly, we carried out immunocytochemistry to examine expression of these 19 genes in the mouse inner ear. Twelve of them showed distinctive cochlear expression patterns. Four showed expression restricted to sensory hair cells (Csmd1, Arsg, Slc16a6 and Gabrg3), one only in marginal cells of the stria vascularis (Dclk1) while the others (Ptprd, Grm8, GlyBP, Evi5, Rimbp2, Ank2, Cdh13) in multiple cochlear cell types. In the third step, we tested these 12 genes for replication of association in an independent set of samples from the Caucasus and Central Asia. Nine out of them showed nominally significant association (p<0.05). In particular, 4 were replicated at the same SNP and with the same effect direction while the remaining 5 showed a significant association in a gene-based test. Finally, to look for genotype-phenotype relationship, the audiometric profiles of the three genotypes of the most strongly associated gene variants were analyzed. Seven out of the 9 replicated genes (CDH13, GRM8, ANK2, SLC16A6, ARSG, RIMBP2 and DCLK1) showed an audiometric pattern with differences between different genotypes further supporting their role in hearing function. These data demonstrate the usefulness of this multistep approach in providing new insights into the molecular basis of hearing and may suggest new targets for treatment and prevention of hearing impairment.

Citing Articles

Divergence of cochlear transcriptomics between reference‑based and reference‑free transcriptome analyses among Rhinolophus ferrumequinum populations.

Shi X, Li J, Liu T, Zhao H, Leng H, Sun K PLoS One. 2023; 18(7):e0288404.

PMID: 37432940 PMC: 10335675. DOI: 10.1371/journal.pone.0288404.


Amelioration of Sensorineural Hearing Loss through Regulation of , , and Gene Expression by a Combination of Cuscutae Semen and Rehmanniae Radix Preparata.

Hong B, Shin S, Nam Y, Shim J, Kim N, Kim M Nutrients. 2023; 15(7).

PMID: 37049613 PMC: 10097224. DOI: 10.3390/nu15071773.


Hereditable variants of classical protein tyrosine phosphatase genes: Will they prove innocent or guilty?.

Hendriks W, van Cruchten R, Pulido R Front Cell Dev Biol. 2023; 10:1051311.

PMID: 36755664 PMC: 9900141. DOI: 10.3389/fcell.2022.1051311.


TBX2 specifies and maintains inner hair and supporting cell fate in the Organ of Corti.

Kaiser M, Ludtke T, Deuper L, Rudat C, Christoffels V, Kispert A Nat Commun. 2022; 13(1):7628.

PMID: 36494345 PMC: 9734556. DOI: 10.1038/s41467-022-35214-4.


G protein-coupled receptors in cochlea: Potential therapeutic targets for hearing loss.

Ma X, Guo J, Fu Y, Shen C, Jiang P, Zhang Y Front Mol Neurosci. 2022; 15:1028125.

PMID: 36311029 PMC: 9596917. DOI: 10.3389/fnmol.2022.1028125.


References
1.
Wang K, Abbott D . A principal components regression approach to multilocus genetic association studies. Genet Epidemiol. 2007; 32(2):108-18. DOI: 10.1002/gepi.20266. View

2.
Tannenbaum J, Slepecky N . Localization of microtubules containing posttranslationally modified tubulin in cochlear epithelial cells during development. Cell Motil Cytoskeleton. 1997; 38(2):146-62. DOI: 10.1002/(SICI)1097-0169(1997)38:2<146::AID-CM4>3.0.CO;2-5. View

3.
Abecasis G, Altshuler D, Auton A, Brooks L, Durbin R, Gibbs R . A map of human genome variation from population-scale sequencing. Nature. 2010; 467(7319):1061-73. PMC: 3042601. DOI: 10.1038/nature09534. View

4.
Baig S, Koschak A, Lieb A, Gebhart M, Dafinger C, Nurnberg G . Loss of Ca(v)1.3 (CACNA1D) function in a human channelopathy with bradycardia and congenital deafness. Nat Neurosci. 2010; 14(1):77-84. DOI: 10.1038/nn.2694. View

5.
Howie B, Fuchsberger C, Stephens M, Marchini J, Abecasis G . Fast and accurate genotype imputation in genome-wide association studies through pre-phasing. Nat Genet. 2012; 44(8):955-9. PMC: 3696580. DOI: 10.1038/ng.2354. View