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Tsai SCS, Lin FCF, Chang KH, Li MC, Chou RH, Huang MY, Chen YC, Kao CY, Cheng CC, Lin HC, Hsu YC. The intravenous administration of skin-derived mesenchymal stem cells ameliorates hearing loss and preserves cochlear hair cells in cisplatin-injected mice: SMSCs ameliorate hearing loss and preserve outer hair cells in mice. Hear Res 2021; 413:108254. [PMID: 34020824 DOI: 10.1016/j.heares.2021.108254] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 03/12/2021] [Accepted: 04/13/2021] [Indexed: 12/21/2022]
Abstract
Mesenchymal stem cells (MSCs) can be isolated from different tissue origins, such as the bone marrow, the placenta, the umbilical cord, adipose tissues, and skin tissues. MSCs can secrete anti-inflammatory molecules and growth factors for tissue repair and remodeling. However, the ability of skin-derived MSCs (SMSCs) to repair cochlear damage and ameliorate hearing loss remains unclear. Cisplatin is a commonly used chemotherapeutic agent that has the side effect of ototoxicity due to inflammation and oxidative stress. This study investigated the effects of SMSCs on cisplatin-induced hearing loss in mice. Two independent experiments were designed for modeling cisplatin-induced hearing loss in mice, one for chronic toxicity (4 mg/kg intraperitoneal [IP] injection once per day for 5 consecutive days) and the other for acute toxicity (25 mg/kg IP injection once on day one). Three days after cisplatin injection, 1 × 106 or 3 × 106 SMSCs were injected through the tail vein. Data on auditory brain responses suggested that SMSCs could significantly reduce the hearing threshold of cisplatin-injected mice. Furthermore, immunohistochemical staining data suggested that SMSCs could significantly ameliorate the loss of cochlear hair cells, TUNEL-positive cells and cleaved caspase 3-positive cells in cisplatin-injected mice. Neuropathological gene analyses revealed that SMSCs treatment could downregulate the expression of cochlear genes involved in apoptosis, autophagy, chromatin modification, disease association, matrix remodeling, oxidative stress, tissue integrity, transcription, and splicing and unfolded protein responses. Additionally, SMSCs treatment could upregulate the expression of cochlear genes affecting the axon and dendrite structures, cytokines, trophic factors, the neuronal skeleton and those involved in carbohydrate metabolism, growth factor signaling, myelination, neural connectivity, neural transmitter release, neural transmitter response and reuptake, neural transmitter synthesis and storage, and vesicle trafficking. Results from TUNEL and caspase 3 staining further confirmed that cisplatin-induced apoptosis in cochlear tissues of cisplatin-injected mice could be reduced by SMSCs treatment. In conclusion, the evidence of the effects of SMSCs in favor of ameliorating ototoxicity-induced hearing loss suggests a potential clinical application.
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Affiliation(s)
- Stella Chin-Shaw Tsai
- Department of Otolaryngology, Tungs' Taichung Metroharbor Hospital, Taichung, Taiwan
| | | | - Kuang-Hsi Chang
- Department of Medical Research, Tungs' Taichung Metroharbor Hospital, Taichung, Taiwan; Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan; General Education Center, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan
| | - Min-Chih Li
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan
| | - Ruey-Hwang Chou
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan; Center for Molecular Medicine, China Medical University Hospital, Taichung, Taiwan; Department of Biotechnology, Asia University, Taichung, Taiwan
| | - Mei-Yue Huang
- Maria Von Med-Biotechnology Co. Ltd., Taipei, Taiwan
| | | | - Chien-Yu Kao
- Medical and Pharmaceutical Industry Technology and Development Center, Taipei, Taiwan
| | - Ching-Chang Cheng
- Laboratory Animal Service Center, Office of Research and Development, China Medical University, Taiwan
| | - Hung-Ching Lin
- Department of Audiology and Speech-Language Pathology, Mackay Medical College, New Taipei City, Taiwan; Department of Otolaryngology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Yi-Chao Hsu
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan; Department of Audiology and Speech-Language Pathology, Mackay Medical College, New Taipei City, Taiwan.
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Schwarzer S, Asokan N, Bludau O, Chae J, Kuscha V, Kaslin J, Hans S. Neurogenesis in the inner ear: the zebrafish statoacoustic ganglion provides new neurons from a Neurod/Nestin-positive progenitor pool well into adulthood. Development 2020; 147:dev.176750. [PMID: 32165493 DOI: 10.1242/dev.176750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 02/25/2020] [Indexed: 01/13/2023]
Abstract
The vertebrate inner ear employs sensory hair cells and neurons to mediate hearing and balance. In mammals, damaged hair cells and neurons are not regenerated. In contrast, hair cells in the inner ear of zebrafish are produced throughout life and regenerate after trauma. However, it is unknown whether new sensory neurons are also formed in the adult zebrafish statoacoustic ganglion (SAG), the sensory ganglion connecting the inner ear to the brain. Using transgenic lines and marker analysis, we identify distinct cell populations and anatomical landmarks in the juvenile and adult SAG. In particular, we analyze a Neurod/Nestin-positive progenitor pool that produces large amounts of new neurons at juvenile stages, which transitions to a quiescent state in the adult SAG. Moreover, BrdU pulse chase experiments reveal the existence of a proliferative but otherwise marker-negative cell population that replenishes the Neurod/Nestin-positive progenitor pool at adult stages. Taken together, our study represents the first comprehensive characterization of the adult zebrafish SAG showing that zebrafish, in sharp contrast to mammals, display continued neurogenesis in the SAG well beyond embryonic and larval stages.
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Affiliation(s)
- Simone Schwarzer
- Center for Regenerative Therapies Dresden (CRTD), Cluster of Excellence, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Nandini Asokan
- Center for Regenerative Therapies Dresden (CRTD), Cluster of Excellence, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Oliver Bludau
- Center for Regenerative Therapies Dresden (CRTD), Cluster of Excellence, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Jeongeun Chae
- Center for Regenerative Therapies Dresden (CRTD), Cluster of Excellence, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Veronika Kuscha
- Center for Regenerative Therapies Dresden (CRTD), Cluster of Excellence, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Jan Kaslin
- Center for Regenerative Therapies Dresden (CRTD), Cluster of Excellence, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Stefan Hans
- Center for Regenerative Therapies Dresden (CRTD), Cluster of Excellence, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
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Liu Z, Jiang Y, Li X, Hu Z. Embryonic Stem Cell-Derived Peripheral Auditory Neurons Form Neural Connections with Mouse Central Auditory Neurons In Vitro via the α2δ1 Receptor. Stem Cell Reports 2018; 11:157-170. [PMID: 29887365 PMCID: PMC6066995 DOI: 10.1016/j.stemcr.2018.05.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 05/07/2018] [Accepted: 05/08/2018] [Indexed: 01/21/2023] Open
Abstract
Integration of stem cell-derived neurons into the central nervous system (CNS) remains a challenge. A co-culture system is developed to understand whether mouse embryonic stem cell (ESC)-derived spiral ganglion neuron (SGN)-like cells (ESNs) synapse with native mouse cochlear nucleus (CN) neurons. A Cre system is used to generate Cop-GFP ESCs, which are induced into ESNs expressing features similar to auditory SGNs. Neural connections are observed between ESNs and CN neurons 4–6 days after co-culturing, which is stimulated by thrombospondin-1 (TSP1). Antagonist and loss-of-function small hairpin RNA studies indicate that the α2δ1 receptor is critical for TSP1-induced synaptogenesis effects. Newly generated synapse-like structures express pre- and post-synaptic proteins. Synaptic vesicle recycling, pair recording, and blocker electrophysiology suggest functional synaptic vesicles, transsynaptic activities, and formation of glutamatergic synapses. These results demonstrate the synaptogenesis capability of ESNs, which is important for pluripotent ESC-derived neurons to form functional synaptic connections to CNS neurons. Embryonic stem cell-derived neurons form functional synapses with CNS neurons Thrombospondin-1 stimulates stem cell-based synaptogenesis via the α2δ1 receptor A co-culture system is developed to study stem cell-based synapse formation Stem cell-based synaptogenesis exhibits functional synapse features
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Affiliation(s)
- Zhenjie Liu
- Department of Otolaryngology-HNS, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Yiyun Jiang
- Department of Otolaryngology-HNS, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Xiaoyang Li
- Department of Otolaryngology-HNS, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Zhengqing Hu
- Department of Otolaryngology-HNS, Wayne State University School of Medicine, Detroit, MI 48201, USA.
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Meas SJ, Zhang CL, Dabdoub A. Reprogramming Glia Into Neurons in the Peripheral Auditory System as a Solution for Sensorineural Hearing Loss: Lessons From the Central Nervous System. Front Mol Neurosci 2018; 11:77. [PMID: 29593497 PMCID: PMC5861218 DOI: 10.3389/fnmol.2018.00077] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 02/26/2018] [Indexed: 12/12/2022] Open
Abstract
Disabling hearing loss affects over 5% of the world’s population and impacts the lives of individuals from all age groups. Within the next three decades, the worldwide incidence of hearing impairment is expected to double. Since a leading cause of hearing loss is the degeneration of primary auditory neurons (PANs), the sensory neurons of the auditory system that receive input from mechanosensory hair cells in the cochlea, it may be possible to restore hearing by regenerating PANs. A direct reprogramming approach can be used to convert the resident spiral ganglion glial cells into induced neurons to restore hearing. This review summarizes recent advances in reprogramming glia in the CNS to suggest future steps for regenerating the peripheral auditory system. In the coming years, direct reprogramming of spiral ganglion glial cells has the potential to become one of the leading biological strategies to treat hearing impairment.
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Affiliation(s)
- Steven J Meas
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Biological Sciences, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Chun-Li Zhang
- Department of Molecular Biology, The University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Alain Dabdoub
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Biological Sciences, Sunnybrook Research Institute, Toronto, ON, Canada.,Department of Otolaryngology - Head & Neck Surgery, University of Toronto, Toronto, ON, Canada
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Bojrab D, Zhang B, Jiang H, Zhang L, Cohen DS, Luo X, Hu Z. Expression of Oligodendrocyte Marker during Peripheral-Central Transitional Zone Formation of the Postnatal Mouse Cochlear Nerve. Otolaryngol Head Neck Surg 2017; 157:488-492. [PMID: 28695768 DOI: 10.1177/0194599817718806] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Objective To better understand oligodendrocyte protein expression along the mouse cochlear nerve in postnatal mice. Study Design In vivo murine study. Setting Research laboratory. Subjects and Methods Swiss Webster mice used at multiple postnatal days (0, 1, 3, 5, 7, 8, 10, 14, 30, and 60). There were 5 replicates at each postnatal day. Cryosection was done to produce sections that included the cochlear nucleus, cochlear nerve, and cochlea in a single sample. Differential interference contrast (DIC) microscopy and immunofluorescence with antibodies specific to the oligodendrocyte protein Olig2 were used to study the cochlear nerve of Swiss Webster mice at postnatal days. Results The myelination of central nervous system projections initiates in close proximity to the peripheral nervous system-central nervous system transitional zone (PCTZ), and oligodendrocytes in neonatal mice are seen with immunohistochemistry peripheral to the DIC-PCTZ interface. Conclusions As the PCTZ migrates from the brain to the cochlea, oligodendrocytes are a part of peripheral extension of central nervous system tissue along the cochlear nerve. Expression of oligodendrocyte marker Oligo2 was observed peripherally to the formation of PCTZ, as determined by DIC microscopy.
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Affiliation(s)
- Dennis Bojrab
- 1 Department of Otolaryngology-Head and Neck Surgery, Wayne State University, Detroit, Michigan, USA
| | - Baofu Zhang
- 1 Department of Otolaryngology-Head and Neck Surgery, Wayne State University, Detroit, Michigan, USA
| | - Hui Jiang
- 1 Department of Otolaryngology-Head and Neck Surgery, Wayne State University, Detroit, Michigan, USA.,2 Department of Otolaryngology-Head and Neck Surgery, Fudan University Jinshan Hospital, Shanghai, China
| | - Lei Zhang
- 1 Department of Otolaryngology-Head and Neck Surgery, Wayne State University, Detroit, Michigan, USA
| | - David S Cohen
- 1 Department of Otolaryngology-Head and Neck Surgery, Wayne State University, Detroit, Michigan, USA
| | - Xuemei Luo
- 1 Department of Otolaryngology-Head and Neck Surgery, Wayne State University, Detroit, Michigan, USA.,3 Department of Otolaryngology-Head and Neck Surgery, Fudan University Zhongshan Hospital, Shanghai, China
| | - Zhengqing Hu
- 1 Department of Otolaryngology-Head and Neck Surgery, Wayne State University, Detroit, Michigan, USA
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