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Colciago A, Audano M, Bonalume V, Melfi V, Mohamed T, Reid AJ, Faroni A, Greer PA, Mitro N, Magnaghi V. Transcriptomic Profile Reveals Deregulation of Hearing-Loss Related Genes in Vestibular Schwannoma Cells Following Electromagnetic Field Exposure. Cells 2021; 10:cells10071840. [PMID: 34360009 PMCID: PMC8307028 DOI: 10.3390/cells10071840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/16/2021] [Accepted: 07/18/2021] [Indexed: 12/23/2022] Open
Abstract
Hearing loss (HL) is the most common sensory disorder in the world population. One common cause of HL is the presence of vestibular schwannoma (VS), a benign tumor of the VIII cranial nerve, arising from Schwann cell (SC) transformation. In the last decade, the increasing incidence of VS has been correlated to electromagnetic field (EMF) exposure, which might be considered a pathogenic cause of VS development and HL. Here, we explore the molecular mechanisms underlying the biologic changes of human SCs and/or their oncogenic transformation following EMF exposure. Through NGS technology and RNA-Seq transcriptomic analysis, we investigated the genomic profile and the differential display of HL-related genes after chronic EMF. We found that chronic EMF exposure modified the cell proliferation, in parallel with intracellular signaling and metabolic pathways changes, mostly related to translation and mitochondrial activities. Importantly, the expression of HL-related genes such as NEFL, TPRN, OTOGL, GJB2, and REST appeared to be deregulated in chronic EMF exposure. In conclusion, we suggest that, at a preclinical stage, EMF exposure might promote the transformation of VS cells and contribute to HL.
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Affiliation(s)
- Alessandra Colciago
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Via G. Balzaretti 9, 20133 Milan, Italy; (A.C.); (M.A.); (V.B.); (V.M.); (T.M.); (N.M.)
| | - Matteo Audano
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Via G. Balzaretti 9, 20133 Milan, Italy; (A.C.); (M.A.); (V.B.); (V.M.); (T.M.); (N.M.)
| | - Veronica Bonalume
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Via G. Balzaretti 9, 20133 Milan, Italy; (A.C.); (M.A.); (V.B.); (V.M.); (T.M.); (N.M.)
| | - Valentina Melfi
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Via G. Balzaretti 9, 20133 Milan, Italy; (A.C.); (M.A.); (V.B.); (V.M.); (T.M.); (N.M.)
| | - Tasnim Mohamed
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Via G. Balzaretti 9, 20133 Milan, Italy; (A.C.); (M.A.); (V.B.); (V.M.); (T.M.); (N.M.)
| | - Adam J. Reid
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9NQ, UK; (A.J.R.); (A.F.)
- Department of Plastic Surgery & Burns, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Science Center, Manchester M13 9NQ, UK
| | - Alessandro Faroni
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9NQ, UK; (A.J.R.); (A.F.)
| | - Peter A. Greer
- Department of Pathology and Molecular Medicine, Queen’s University, Kingston, ON K7L 3N6, Canada;
| | - Nico Mitro
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Via G. Balzaretti 9, 20133 Milan, Italy; (A.C.); (M.A.); (V.B.); (V.M.); (T.M.); (N.M.)
| | - Valerio Magnaghi
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Via G. Balzaretti 9, 20133 Milan, Italy; (A.C.); (M.A.); (V.B.); (V.M.); (T.M.); (N.M.)
- Correspondence: ; Tel.: +39-0250318414
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Men Y, Li X, Tu H, Zhang A, Fu X, Wang Z, Jin Y, Hou C, Zhang T, Zhang S, Zhou Y, Li B, Li J, Sun X, Wang H, Gao J. Tprn is essential for the integrity of stereociliary rootlet in cochlear hair cells in mice. Front Med 2018; 13:690-704. [PMID: 30159668 DOI: 10.1007/s11684-018-0638-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 01/27/2018] [Indexed: 11/24/2022]
Abstract
Tprn encodes the taperin protein, which is concentrated in the tapered region of hair cell stereocilia in the inner ear. In humans, TPRN mutations cause autosomal recessive nonsyndromic deafness (DFNB79) by an unknown mechanism. To determine the role of Tprn in hearing, we generated Tprn-null mice by clustered regularly interspaced short palindromic repeat/Cas9 genome-editing technology from a CBA/CaJ background. We observed significant hearing loss and progressive degeneration of stereocilia in the outer hair cells of Tprn-null mice starting from postnatal day 30. Transmission electron microscopy images of stereociliary bundles in the mutant mice showed some stereociliary rootlets with curved shafts. The central cores of the stereociliary rootlets possessed hollow structures with surrounding loose peripheral dense rings. Radixin, a protein expressed at stereocilia tapering, was abnormally dispersed along the stereocilia shafts in Tprn-null mice. The expression levels of radixin and β-actin significantly decreased.We propose that Tprn is critical to the retention of the integrity of the stereociliary rootlet. Loss of Tprn in Tprn-null mice caused the disruption of the stereociliary rootlet, which resulted in damage to stereociliary bundles and hearing impairments. The generated Tprn-null mice are ideal models of human hereditary deafness DFNB79.
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Affiliation(s)
- Yuqin Men
- School of Life Science, Shandong University, Jinan, 250100, China
| | - Xiujuan Li
- Rizhao Polytechnic, Rizhao, 276826, China
| | - Hailong Tu
- School of Life Science, Shandong University, Jinan, 250100, China
| | - Aizhen Zhang
- School of Life Science, Shandong University, Jinan, 250100, China
| | - Xiaolong Fu
- School of Life Science, Shandong University, Jinan, 250100, China
| | - Zhishuo Wang
- School of Life Science, Shandong University, Jinan, 250100, China
| | - Yecheng Jin
- School of Life Science, Shandong University, Jinan, 250100, China
| | - Congzhe Hou
- The Second Hospital of Shandong University, Jinan, 250033, China
| | - Tingting Zhang
- School of Life Science, Shandong University, Jinan, 250100, China
| | - Sen Zhang
- School of Life Science, Shandong University, Jinan, 250100, China
| | - Yichen Zhou
- School of Life Science, Shandong University, Jinan, 250100, China
| | - Boqin Li
- Electron Microscopy Laboratory, Shandong Institute of Otolaryngology, Jinan, 250022, China.,Laboratory of Electron Microscopy, Jinan WEI-YA Biotech Company, Jinan, 250100, China
| | - Jianfeng Li
- Department of Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, 250021, China
| | - Xiaoyang Sun
- School of Life Science, Shandong University, Jinan, 250100, China.
| | - Haibo Wang
- Department of Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, 250021, China.
| | - Jiangang Gao
- School of Life Science, Shandong University, Jinan, 250100, China.
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