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Li YQ, Ma H, Wang QY, Liu DS, Wang W, Li SX, Zuo RX, Shen T, Zhu BS, Sa YL. Low frequency of SLC26A4 c.919-2A > G variant among patients with nonsyndromic hearing loss in Yunnan of Southwest China. BMC Med Genomics 2024; 17:55. [PMID: 38378613 PMCID: PMC10877886 DOI: 10.1186/s12920-024-01829-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 02/09/2024] [Indexed: 02/22/2024] Open
Abstract
BACKGROUND Gene variants are responsible for more than half of hearing loss, particularly in nonsyndromic hearing loss (NSHL). The most common pathogenic variant in SLC26A4 gene found in East Asian populations is c.919-2A > G followed by c.2168A > G (p.H723R). This study was to evaluate their variant frequencies in patients with NSHL from special education schools in nine different areas of Southwest China's Yunnan. METHODS We performed molecular characterization by PCR-products directly Sanger sequencing of the SLC26A4 c.919-2AG and c.2168 A > G variants in 1167 patients with NSHL including 533 Han Chinese and 634 ethnic minorities. RESULTS The SLC26A4 c.919-2A > G variant was discovered in 8 patients with a homozygous state (0.69%) and twenty-five heterozygous (2.14%) in 1167 patients with NSHL. The total carrier rate of the c.919-2A > G variant was found in Han Chinese patients with 4.50% and ethnic minority patients with 1.42%. A significant difference existed between the two groups (P < 0.05). The c.919-2A > G allele variant frequency was ranged from 3.93% in Kunming to zero in Lincang and Nvjiang areas of Yunnan. We further detected the SLC26A4 c.2168 A > G variant in this cohort with one homozygotes (0.09%) and seven heterozygotes (0.60%), which was detected in Baoshan, Honghe, Licang and Pu`er areas. Between Han Chinese group (0.94%) and ethnic minority group (0.47%), there was no statistical significance (P > 0.05). Three Han Chinese patients (0.26%) carried compound heterozygosity for c.919-2A > G and c.2168 A > G. CONCLUSION These data suggest that the variants in both SLC26A4 c.919-2A > G and c.2168 A > G were relatively less frequencies in this cohort compared to the average levels in most regions of China, as well as significantly lower than that in Han-Chinese patients. These results broadened Chinese population genetic information resources and provided more detailed information for regional genetic counselling for Yunnan.
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Affiliation(s)
- Yan-Qiong Li
- Center for Clinical Medicine Research (Yunnan Provincial Key Laboratory of Clinical Virology, 202205AG070053, L-2019003), The First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China
- Central Sterile Supply Department, The First People's Hospital of Yunnan Province, (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China
| | - Heng Ma
- The Outpatient Department of Yanan Hospital Affiliated to Kunming Medical University, Kunming, 650051, Yunnan, China
| | - Qin-Yao Wang
- Center for Clinical Medicine Research (Yunnan Provincial Key Laboratory of Clinical Virology, 202205AG070053, L-2019003), The First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China
| | - De-Sheng Liu
- Center for Clinical Medicine Research (Yunnan Provincial Key Laboratory of Clinical Virology, 202205AG070053, L-2019003), The First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China
- The Emergency Department of Traditional Chinese Medicine Hospital of Sichuan Province, (The Affiliated Hospital of Chengdu University of Traditional Chinese Medicine), Chengdu, 610075, Sichuan, China
| | - Wei Wang
- Center for Clinical Medicine Research (Yunnan Provincial Key Laboratory of Clinical Virology, 202205AG070053, L-2019003), The First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China
| | - Shi-Xin Li
- Center for Clinical Medicine Research (Yunnan Provincial Key Laboratory of Clinical Virology, 202205AG070053, L-2019003), The First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China
| | - Rong-Xia Zuo
- Center for Clinical Medicine Research (Yunnan Provincial Key Laboratory of Clinical Virology, 202205AG070053, L-2019003), The First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China
| | - Tao Shen
- Center for Clinical Medicine Research (Yunnan Provincial Key Laboratory of Clinical Virology, 202205AG070053, L-2019003), The First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China
| | - Bao-Sheng Zhu
- Center of Genetic Diagnosis (Yunnan Provincial Key Laboratory for Birth Defects and Genetic Diseases), The First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China
| | - Ya-Lian Sa
- Center for Clinical Medicine Research (Yunnan Provincial Key Laboratory of Clinical Virology, 202205AG070053, L-2019003), The First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology/School of Medicine), Kunming, 650032, Yunnan, China.
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Chou CW, Hsu YC. Current development of patient-specific induced pluripotent stem cells harbouring mitochondrial gene mutations and their applications in the treatment of sensorineural hearing loss. Hear Res 2023; 429:108689. [PMID: 36649664 DOI: 10.1016/j.heares.2023.108689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023]
Abstract
Of all the human body's sensory systems, the auditory system is perhaps its most intricate. Hearing loss can result from even modest damage or cell death in the inner ear, and is the most common form of sensory loss. Human hearing is made possible by the sensory epithelium, the lateral wall, and auditory nerves. The most prominent functional cells in the sensory epithelium are outer hair cells (OHCs), inner hair cells (IHCs), and supporting cells. Different sound frequencies are processed by OHCs and IHCs in different cochlear regions, with those in the apex responsible for low frequencies and those in the basal region responsible for high frequencies. Hair cells can be damaged or destroyed by loud noise, aging process, genetic mutations, ototoxicity, infection, and illness. As such, they are a primary target for treating sensorineural hearing loss. Other areas known to affect hearing include spiral ganglion neurons (SGNs) in the auditory nerve. Age-related degradation of HCs and SGNs can also cause hearing loss. The aim of this review is to introduce the roles of mitochondria in human auditory system and the inner ear's main cell types and cellular functions, before going on to detail the likely health benefits of iPSC technology. We posit that patient-specific iPSCs with mitochondrial gene mutations will be an important aspect of regenerative medicine and will lead to significant progress in the treatment of SNHL.
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Affiliation(s)
- Chao-Wen Chou
- Department of Audiology and Speech-Language Pathology, Mackay Medical College, New Taipei City, Taiwan
| | - Yi-Chao Hsu
- Department of Audiology and Speech-Language Pathology, Mackay Medical College, New Taipei City, Taiwan; Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan
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Qi M, Lai H, Xu L, Zeng F, Zhang J, Xie K. Pregestational screening of hereditary deafness genes carriers in 10,684 normal pregnant women in Zhuzhou, China. Birth Defects Res 2021; 113:605-612. [PMID: 33470562 DOI: 10.1002/bdr2.1868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/22/2020] [Accepted: 12/27/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND Mutations in genes associated with deafness differ between ethnic groups and regions in China. In this study, we investigated the genes associated with deafness in pregnant women to analyze the distribution of mutations leading to deafness in Zhuzhou, China. METHODS A total of 10,684 pregnant women were enrolled in this study. DNA samples were collected to detect the 14 common mutations in deafness genes (at 108 sites). RESULTS Prevalence of mutations in deafness genes in pregnant women with normal hearing in Zhuzhou was 4.92% (526/10,684). Among these 526 pregnant women with deafness gene mutations, the frequencies of mutated GJB2, GJB3, SLC26A4, and mtDNA 12S rRNA were 40.11, 7.22, 40.68, and 11.98%, respectively. The hotspots for mutations in the deafness genes were: c.235delC in GJB2 (31.18%), c.919-2A > G in SLC26A4 (18.44%), c.299_300delAT in GJB2 (5.70%), m.7444G > A in mtDNA 12S rRNA (5.70%), c.1229C > T in SLC26A4 (5.51%), m.1555A > G in mtDNA 12S rRNA (5.32%), accounting for 71.85%. Moreover, husbands of the 526 pregnant women who carried the deafness gene mutations were also included in the analysis to detect deafness gene mutations. Among the 526 husbands, 23 husbands carried mutations in deafness genes, accounting for 4.37%. The deafness gene mutations of the husbands and pregnant wives were not the same. In addition, the results of the neonatal follow-up hearing tests were all normal. CONCLUSION Our study identified the prevalence of mutations in GJB2, SLC26A4, mtDNA 12S rRNA, and GJB3 genes in pregnant women from Zhuzhou, China.
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Affiliation(s)
- Mingming Qi
- Department of Obstetrics, Zhuzhou Central Hospital and The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, China
| | - Huimin Lai
- Department of Obstetrics, Zhuzhou Central Hospital and The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, China
| | - Lili Xu
- Department of Obstetrics, Zhuzhou Central Hospital and The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, China
| | - Fanhua Zeng
- Department of Obstetrics, Zhuzhou Central Hospital and The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, China
| | - Jing Zhang
- Department of Obstetrics, Zhuzhou Central Hospital and The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, China
| | - Kaili Xie
- Department of Obstetrics, Zhuzhou Central Hospital and The Affiliated Zhuzhou Hospital Xiangya Medical College CSU, Zhuzhou, China
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Su X, Feng Y, Rahman SA, Wu S, Li G, Rüschendorf F, Zhao L, Cui H, Liang J, Fang L, Hu H, Froehler S, Yu Y, Patone G, Hummel O, Chen Q, Raile K, Luft FC, Bähring S, Hussain K, Chen W, Zhang J, Gong M. Phosphatidylinositol 4-kinase β mutations cause nonsyndromic sensorineural deafness and inner ear malformation. J Genet Genomics 2020; 47:618-626. [PMID: 33358777 DOI: 10.1016/j.jgg.2020.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 10/23/2022]
Abstract
Congenital hearing loss is a common disorder worldwide. Heterogeneous gene variation accounts for approximately 20-25% of such patients. We investigated a five-generation Chinese family with autosomal-dominant nonsyndromic sensorineural hearing loss (SNHL). No wave was detected in the pure-tone audiometry, and the auditory brainstem response was absent in all patients. Computed tomography of the patients, as well as of two sporadic SNHL cases, showed bilateral inner ear anomaly, cochlear maldevelopment, absence of the osseous spiral lamina, and an enlarged vestibular aqueduct. Such findings were absent in nonaffected persons. We used linkage analysis and exome sequencing and uncovered a heterozygous missense mutation in the PI4KB gene (p.Gln121Arg) encoding phosphatidylinositol 4-kinase β (PI4KB) from the patients in this family. In addition, 3 missense PI4KB (p.Val434Gly, p.Glu667Lys, and p.Met739Arg) mutations were identified in five patients with nonsyndromic SNHL from 57 sporadic cases. No such mutations were present within 600 Chinese controls, the 1000 genome project, gnomAD, or similar databases. Depleting pi4kb mRNA expression in zebrafish caused inner ear abnormalities and audiosensory impairment, mimicking the patient phenotypes. Moreover, overexpression of 4 human missense PI4KB mutant mRNAs in zebrafish embryos resulted in impaired hearing function, suggesting dominant-negative effects. Taken together, our results reveal that PI4KB mutations can cause SNHL and inner ear malformation. PI4KB should be included in neonatal deafness screening.
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Affiliation(s)
- Xiulan Su
- Clinical Medicine Research Center, Affiliated Hospital of Inner Mongolia Medical University, Huhhot, 010050, China
| | - Yufei Feng
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang, 524001, China; Marine Medical Research Institute of Guangdong Zhanjiang, Zhanjiang, 524023, China
| | - Sofia A Rahman
- Genomic Medicine Programme, UCL Institute of Child Health and Great Ormond Street Hospital for Children, 30 Guilford Street, London, WC1N 1EH, UK
| | - Shuilong Wu
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang, 524001, China; Marine Medical Research Institute of Guangdong Zhanjiang, Zhanjiang, 524023, China
| | - Guoan Li
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang, 524001, China; Marine Medical Research Institute of Guangdong Zhanjiang, Zhanjiang, 524023, China
| | - Franz Rüschendorf
- Max-Delbrueck-Center for Molecular Medicine (MDC), Robert-Roessle-Str.10, Berlin, 13125, Germany
| | - Lei Zhao
- Department of Radiology, Affiliated Hospital of Inner Mongolia Medical University, Huhhot, 010050, China
| | - Hongwei Cui
- Clinical Medicine Research Center, Affiliated Hospital of Inner Mongolia Medical University, Huhhot, 010050, China
| | - Junqing Liang
- Affiliated People Hospital of Inner Mongolia Medical University, Huhhot, 010050, China
| | - Liang Fang
- Max-Delbrueck-Center for Molecular Medicine (MDC), Robert-Roessle-Str.10, Berlin, 13125, Germany; Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Hao Hu
- Guangzhou Women and Children's Medical Center, Guangzhou, 510623, China
| | - Sebastian Froehler
- Max-Delbrueck-Center for Molecular Medicine (MDC), Robert-Roessle-Str.10, Berlin, 13125, Germany
| | - Yong Yu
- Max-Delbrueck-Center for Molecular Medicine (MDC), Robert-Roessle-Str.10, Berlin, 13125, Germany
| | - Giannino Patone
- Max-Delbrueck-Center for Molecular Medicine (MDC), Robert-Roessle-Str.10, Berlin, 13125, Germany
| | - Oliver Hummel
- Max-Delbrueck-Center for Molecular Medicine (MDC), Robert-Roessle-Str.10, Berlin, 13125, Germany
| | - Qinghua Chen
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Klemens Raile
- Experimental and Clinical Research Center (ECRC), A Joint Cooperation Between the Charité Medical Faculty and the Max-Delbrueck-Center for Molecular Medicine in the Helmholtz Association (MDC), Lindenberger Weg.80, Berlin, 13125, Germany
| | - Friedrich C Luft
- Experimental and Clinical Research Center (ECRC), A Joint Cooperation Between the Charité Medical Faculty and the Max-Delbrueck-Center for Molecular Medicine in the Helmholtz Association (MDC), Lindenberger Weg.80, Berlin, 13125, Germany
| | - Sylvia Bähring
- Experimental and Clinical Research Center (ECRC), A Joint Cooperation Between the Charité Medical Faculty and the Max-Delbrueck-Center for Molecular Medicine in the Helmholtz Association (MDC), Lindenberger Weg.80, Berlin, 13125, Germany
| | - Khalid Hussain
- Department of Paediatric Medicine Division of Endocrinology, Sidra Medical & Research Center, OPC, Doha, C6-337, Qatar
| | - Wei Chen
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China; Medi-X Institute, SUSTec Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jingjing Zhang
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang, 524001, China; Marine Medical Research Institute of Guangdong Zhanjiang, Zhanjiang, 524023, China.
| | - Maolian Gong
- Experimental and Clinical Research Center (ECRC), A Joint Cooperation Between the Charité Medical Faculty and the Max-Delbrueck-Center for Molecular Medicine in the Helmholtz Association (MDC), Lindenberger Weg.80, Berlin, 13125, Germany.
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