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Zhang J, Sun W, Kuang S, Gan Q, Li H, Ma H, Yang G, Guo J, Tang Y, Yuan W. miR-130b-3p involved in the pathogenesis of age-related hearing loss via targeting PPARγ and autophagy. Hear Res 2024; 449:109029. [PMID: 38820739 DOI: 10.1016/j.heares.2024.109029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 04/17/2024] [Accepted: 05/13/2024] [Indexed: 06/02/2024]
Abstract
The study focuses on the underlying regulatory mechanism of age-related hearing loss (ARHL), which results from autophagy dysregulation mediated by miR-130b-3p targeting PPARγ. We constructed miR-130b-3p knockout (antagomir) and PPARγ over-expression (OE-PPARγ) mice model by injecting mmu-miR-130b-3p antagomir and HBAAV2/Anc80-m-Pparg-T2A-mCHerry into the right ear' round window of each mouse, respectively. In vitro, we introduced oxidative stress within HEI-OC1 cells by H2O2 and exogenously changed the miR-130b-3p and PPARγ levels. MiRNA level was detected by RT-qPCR, proteins by western blotting and immunohistochemistry. Morphology of autophagosomes was observed by electron microscopy. In vivo, the cochlea of aged mice showed higher miR-130b-3p expression and lower PPARγ expression, while exogenous inhibition of miR-130b-3p up-regulated PPARγ expression. Autophagy-related biomarkers expression (ATG5, Beclin-1 and LC3B II/I) decreased in aged mice, which reversely increased after the inhibition of miR-130b-3p. The elevation of PPARγ demonstrated similar effects. Contrarily, exogenous overexpression of miR-130b-3p resulted in the decrease of ATG5, Beclin-1 and LC3B II/I. We created oxidative stress within HEI-OC1 by H2O2, subsequently observed the formation of autophagosomes under electron microscope, so as the elevated cell apoptosis rate and weakened cell viability. MiR-130b-3p/PPARγ contributed to the premature senescence of these H2O2-induced HEI-OC1 cells. MiR-130b-3p regulated HEI-OC1 cell growth by targeting PPARγ, thus leading to ARHL.
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Affiliation(s)
- Juhong Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Chongqing General Hospital, Chongqing University, Chongqing 401147, PR China
| | - Wenfang Sun
- Department of Otorhinolaryngology Head and Neck Surgery, Chongqing General Hospital, Chongqing University, Chongqing 401147, PR China
| | - Shaojing Kuang
- Department of Otorhinolaryngology Head and Neck Surgery, Chongqing General Hospital, Chongqing University, Chongqing 401147, PR China
| | - Qiang Gan
- Department of Otorhinolaryngology, Chongqing Nanchuan District Traditional Chinese Medicine Hospital, Chongqing 408499, PR China
| | - Hai Li
- Department of Otorhinolaryngology Head and Neck Surgery, Xuanhan County People's Hospital, Xuanhan County 636150, PR China
| | - Haizhu Ma
- Department of Otorhinolaryngology Head and Neck Surgery, Chongqing General Hospital, Chongqing University, Chongqing 401147, PR China
| | - Guijun Yang
- Department of Otorhinolaryngology Head and Neck Surgery, Chongqing General Hospital, Chongqing University, Chongqing 401147, PR China
| | - Jialin Guo
- Department of Otorhinolaryngology Head and Neck Surgery, Chongqing General Hospital, Chongqing University, Chongqing 401147, PR China
| | - Yong Tang
- Department of Histology and Embryology, School of Basic Medicine, Chongqing Medical University, Chongqing 400016, PR China
| | - Wei Yuan
- Department of Otorhinolaryngology Head and Neck Surgery, Chongqing General Hospital, Chongqing University, Chongqing 401147, PR China.
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Gadenstaetter AJ, Krumpoeck PE, Auinger AB, Yildiz E, Tu A, Matula C, Arnoldner C, Landegger LD. Prestin in Human Perilymph, Cerebrospinal Fluid, and Blood as a Biomarker for Hearing Loss. Otolaryngol Head Neck Surg 2024. [PMID: 38988299 DOI: 10.1002/ohn.895] [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: 04/08/2024] [Revised: 06/12/2024] [Accepted: 06/23/2024] [Indexed: 07/12/2024]
Abstract
OBJECTIVE Determining the concentration of prestin in human blood, cerebrospinal fluid (CSF), and perilymph (PL), and evaluating its suitability as a clinical biomarker for sensori-neural hearing loss (SNHL). STUDY DESIGN Human blood, CSF, and PL samples were intraoperatively collected from 42 patients with tumors of the internal auditory canal or with intracochlear tumors undergoing translabyrinthine or middle fossa tumor removal. Prestin concentration was measured using enzyme-linked immunosorbent assay and linear regression analyses were performed to investigate its associations with audiological as well as vestibular test results. SETTING Tertiary referral center. RESULTS The median prestin concentration in blood samples of the 42 study participants (26 women, mean ± standard deviation age, 52.7 ± 12.5 years) was 1.32 (interquartile range, IQR, 0.71-1.99) ng/mL. CSF prestin levels were significantly higher with 4.73 (IQR, 2.45-14.03) ng/mL (P = .005). With 84.74 (IQR, 38.95-122.00) ng/mL, PL prestin concentration was significantly higher compared to blood (P = .01) and CSF (P = .03) levels. Linear regression analyses showed significant associations of CSF prestin concentration with preoperative hearing levels (pure-tone average and word recognition; P = .008, R2 = 0.1894; P = .03, R2 = 0.1857), but no correlations with blood or PL levels. CONCLUSION AND RELEVANCE This study's findings highlight the volatile nature of prestin levels and provide the first insights into this potential biomarker's concentrations in body fluids apart from blood. Future investigations should comprehensively assess human prestin levels with different etiologies of SNHL, prestin's natural homeostasis and systemic circulation, and its temporal dynamics after cochlear trauma. Finally, clinically approved detection kits for prestin are urgently required prior to considering a potential translational implementation of this diagnostic technique.
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Affiliation(s)
- Anselm Joseph Gadenstaetter
- Christian Doppler Laboratory for Inner Ear Research, Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
- Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Paul Emmerich Krumpoeck
- Christian Doppler Laboratory for Inner Ear Research, Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
- Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Alice Barbara Auinger
- Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Erdem Yildiz
- Christian Doppler Laboratory for Inner Ear Research, Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
- Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Aldine Tu
- Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Christian Matula
- Department of Neurosurgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Christoph Arnoldner
- Christian Doppler Laboratory for Inner Ear Research, Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
- Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Lukas David Landegger
- Christian Doppler Laboratory for Inner Ear Research, Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
- Department of Otorhinolaryngology-Head and Neck Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
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Feng M, Zhou X, Hu Y, Zhang J, Yang T, Chen Z, Yuan W. Comprehensive Transcriptomic Profiling of m6A Modification in Age-Related Hearing Loss. Biomolecules 2023; 13:1537. [PMID: 37892219 PMCID: PMC10605720 DOI: 10.3390/biom13101537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/27/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023] Open
Abstract
Age-related hearing loss (ARHL), also known as presbycusis, is one of the most common neurodegenerative disorders in elderly individuals and has a prevalence of approximately 70-80% among individuals aged 65 and older. As ARHL is an intricate and multifactorial disease, the exact pathogenesis of ARHL is not fully understood. There is evidence that transcriptional dysregulation mediated by epigenetic modifications is widespread in ARHL. However, the potential role of N6-methyladenosine (m6A) modification, as a crucial component of epigenetics, in ARHL progression remains unclear. In this study, we confirmed that the downregulation of m6A modification in cochlear tissues is related to ARHL and found that the expression of the m6A methylation regulators Wilms tumour suppressor-1-associated protein (WTAP), methyltransferase-like 3 (METTL3), ALKB homologous protein 5 (ALKBH5) and fat mass and obesity-associated protein (FTO) is decreased significantly at the mRNA and protein levels in ARHL mice. Then, we used methylated RNA immunoprecipitation sequencing (MeRIP-Seq) and RNA sequencing (RNA-Seq) to identify the differentially m6A-methylated genes in the cochlear tissues of ARHL mice. A total of 3438 genes with differential m6A methylation were identified, of which 1332 genes were m6A-hypermethylated and 2106 genes were m6A-hypomethylated in the ARHL group compared to the control group according to MeRIP-seq. Further joint analysis of RNA-Seq and MeRIP-Seq data showed that 262 genes had significant differences in both mRNA expression and m6A methylation. GO and KEGG analyses indicated that 262 unique genes were enriched mainly in the PI3K-AKT signalling pathway. In conclusion, the results of this study reveal differential m6A methylation patterns in the cochlear tissues of ARHL mice, providing a theoretical basis for further study of the pathogenesis of ARHL and potential therapeutic strategies.
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Affiliation(s)
- Menglong Feng
- Chongqing Medical University, Chongqing 400016, China
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Department of Otolaryngology & Head and Neck, Chongqing General Hospital, Chongqing 401147, China
| | - Xiaoqing Zhou
- Department of Otolaryngology & Head and Neck, Chongqing General Hospital, Chongqing 401147, China
| | - Yaqin Hu
- Department of Otolaryngology & Head and Neck, Chongqing General Hospital, Chongqing 401147, China
| | - Juhong Zhang
- Department of Otolaryngology & Head and Neck, Chongqing General Hospital, Chongqing 401147, China
| | - Ting Yang
- Chongqing Medical University, Chongqing 400016, China
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Department of Otolaryngology & Head and Neck, Chongqing General Hospital, Chongqing 401147, China
| | - Zhiji Chen
- Department of Otolaryngology & Head and Neck, Chongqing General Hospital, Chongqing 401147, China
| | - Wei Yuan
- Chongqing Medical University, Chongqing 400016, China
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
- Department of Otolaryngology & Head and Neck, Chongqing General Hospital, Chongqing 401147, China
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