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Zhang B, Hu Y, Du H, Han S, Ren L, Cheng H, Wang Y, Gao X, Zheng S, Cui Q, Tian L, Liu T, Sun J, Chai R. Tissue engineering strategies for spiral ganglion neuron protection and regeneration. J Nanobiotechnology 2024; 22:458. [PMID: 39085923 PMCID: PMC11293049 DOI: 10.1186/s12951-024-02742-8] [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: 03/08/2024] [Accepted: 07/25/2024] [Indexed: 08/02/2024] Open
Abstract
Cochlear implants can directly activate the auditory system's primary sensory neurons, the spiral ganglion neurons (SGNs), via circumvention of defective cochlear hair cells. This bypass restores auditory input to the brainstem. SGN loss etiologies are complex, with limited mammalian regeneration. Protecting and revitalizing SGN is critical. Tissue engineering offers a novel therapeutic strategy, utilizing seed cells, biomolecules, and scaffold materials to create a cellular environment and regulate molecular cues. This review encapsulates the spectrum of both human and animal research, collating the factors contributing to SGN loss, the latest advancements in the utilization of exogenous stem cells for auditory nerve repair and preservation, the taxonomy and mechanism of action of standard biomolecules, and the architectural components of scaffold materials tailored for the inner ear. Furthermore, we delineate the potential and benefits of the biohybrid neural interface, an incipient technology in the realm of implantable devices. Nonetheless, tissue engineering requires refined cell selection and differentiation protocols for consistent SGN quality. In addition, strategies to improve stem cell survival, scaffold biocompatibility, and molecular cue timing are essential for biohybrid neural interface integration.
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Affiliation(s)
- Bin Zhang
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China
| | - Yangnan Hu
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China.
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China.
| | - Haoliang Du
- Department of Otolaryngology Head and Neck Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing University, Nanjing, 210008, China
| | - Shanying Han
- Department of Otolaryngology Head and Neck Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Lei Ren
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Hong Cheng
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Yusong Wang
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Xin Gao
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Shasha Zheng
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Qingyue Cui
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Lei Tian
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China.
| | - Tingting Liu
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China.
| | - Jiaqiang Sun
- Department of Otolaryngology-Head and Neck Surgery, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui, 230001, China.
| | - Renjie Chai
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Public Health, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China.
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China.
- Department of Otolaryngology Head and Neck Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, China.
- Department of Neurology, Aerospace Center Hospital, School of Life Science, Beijing Institute of Technology, Beijing, 100081, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Science, Beijing, China.
- Southeast University Shenzhen Research Institute, Shenzhen, 518063, China.
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2
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Qiu Y, Wang H, Fan M, Pan H, Guan J, Jiang Y, Jia Z, Wu K, Zhou H, Zhuang Q, Lei Z, Ding X, Cai H, Dong Y, Yan L, Lin A, Fu Y, Zhang D, Yan Q, Wang Q. Impaired AIF-CHCHD4 interaction and mitochondrial calcium overload contribute to auditory neuropathy spectrum disorder in patient-iPSC-derived neurons with AIFM1 variant. Cell Death Dis 2023; 14:375. [PMID: 37365177 DOI: 10.1038/s41419-023-05899-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 06/08/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023]
Abstract
Auditory neuropathy spectrum disorder (ANSD) is a hearing impairment caused by dysfunction of inner hair cells, ribbon synapses, spiral ganglion neurons and/or the auditory nerve itself. Approximately 1/7000 newborns have abnormal auditory nerve function, accounting for 10%-14% of cases of permanent hearing loss in children. Although we previously identified the AIFM1 c.1265 G > A variant to be associated with ANSD, the mechanism by which ANSD is associated with AIFM1 is poorly understood. We generated induced pluripotent stem cells (iPSCs) from peripheral blood mononuclear cells (PBMCs) via nucleofection with episomal plasmids. The patient-specific iPSCs were edited via CRISPR/Cas9 technology to generate gene-corrected isogenic iPSCs. These iPSCs were further differentiated into neurons via neural stem cells (NSCs). The pathogenic mechanism was explored in these neurons. In patient cells (PBMCs, iPSCs, and neurons), the AIFM1 c.1265 G > A variant caused a novel splicing variant (c.1267-1305del), resulting in AIF p.R422Q and p.423-435del proteins, which impaired AIF dimerization. Such impaired AIF dimerization then weakened the interaction between AIF and coiled-coil-helix-coiled-coil-helix domain-containing protein 4 (CHCHD4). On the one hand, the mitochondrial import of ETC complex subunits was inhibited, subsequently leading to an increased ADP/ATP ratio and elevated ROS levels. On the other hand, MICU1-MICU2 heterodimerization was impaired, leading to mCa2+ overload. Calpain was activated by mCa2+ and subsequently cleaved AIF for its translocation into the nucleus, ultimately resulting in caspase-independent apoptosis. Interestingly, correction of the AIFM1 variant significantly restored the structure and function of AIF, further improving the physiological state of patient-specific iPSC-derived neurons. This study demonstrates that the AIFM1 variant is one of the molecular bases of ANSD. Mitochondrial dysfunction, especially mCa2+ overload, plays a prominent role in ANSD associated with AIFM1. Our findings help elucidate the mechanism of ANSD and may lead to the provision of novel therapies.
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Affiliation(s)
- Yue Qiu
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Hongyang Wang
- Senior Department of Otolaryngology, Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Mingjie Fan
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Department of Pediatrics, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, China
| | - Huaye Pan
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Jing Guan
- Senior Department of Otolaryngology, Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Yangwei Jiang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Zexiao Jia
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Kaiwen Wu
- Senior Department of Otolaryngology, Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Hui Zhou
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Qianqian Zhuang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Zhaoying Lei
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Xue Ding
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Huajian Cai
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Yufei Dong
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Lei Yan
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Aifu Lin
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Yong Fu
- The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310052, China
| | - Dong Zhang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China.
| | - Qingfeng Yan
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China.
- Department of Pediatrics, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, China.
- Key Laboratory for Cell and Gene Engineering of Zhejiang Province, Hangzhou, Zhejiang, 310058, China.
| | - Qiuju Wang
- Senior Department of Otolaryngology, Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, Chinese PLA General Hospital, Beijing, 100853, China.
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3
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Stojkovic M, Han D, Jeong M, Stojkovic P, Stankovic KM. Human induced pluripotent stem cells and CRISPR/Cas-mediated targeted genome editing: Platforms to tackle sensorineural hearing loss. STEM CELLS (DAYTON, OHIO) 2021; 39:673-696. [PMID: 33586253 DOI: 10.1002/stem.3353] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 12/13/2020] [Indexed: 11/09/2022]
Abstract
Hearing loss (HL) is a major global health problem of pandemic proportions. The most common type of HL is sensorineural hearing loss (SNHL) which typically occurs when cells within the inner ear are damaged. Human induced pluripotent stem cells (hiPSCs) can be generated from any individual including those who suffer from different types of HL. The development of new differentiation protocols to obtain cells of the inner ear including hair cells (HCs) and spiral ganglion neurons (SGNs) promises to expedite cell-based therapy and screening of potential pharmacologic and genetic therapies using human models. Considering age-related, acoustic, ototoxic, and genetic insults which are the most frequent causes of irreversible damage of HCs and SGNs, new methods of genome editing (GE), especially the CRISPR/Cas9 technology, could bring additional opportunities to understand the pathogenesis of human SNHL and identify novel therapies. However, important challenges associated with both hiPSCs and GE need to be overcome before scientific discoveries are correctly translated to effective and patient-safe applications. The purpose of the present review is (a) to summarize the findings from published reports utilizing hiPSCs for studies of SNHL, hence complementing recent reviews focused on animal studies, and (b) to outline promising future directions for deciphering SNHL using disruptive molecular and genomic technologies.
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Affiliation(s)
- Miodrag Stojkovic
- Eaton Peabody Laboratories, Department of Otolaryngology Head and Neck Surgery, Massachusetts Eye and Ear, Boston, Massachusetts, USA.,Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Dongjun Han
- Eaton Peabody Laboratories, Department of Otolaryngology Head and Neck Surgery, Massachusetts Eye and Ear, Boston, Massachusetts, USA.,Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Minjin Jeong
- Eaton Peabody Laboratories, Department of Otolaryngology Head and Neck Surgery, Massachusetts Eye and Ear, Boston, Massachusetts, USA.,Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Petra Stojkovic
- Eaton Peabody Laboratories, Department of Otolaryngology Head and Neck Surgery, Massachusetts Eye and Ear, Boston, Massachusetts, USA.,Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Konstantina M Stankovic
- Eaton Peabody Laboratories, Department of Otolaryngology Head and Neck Surgery, Massachusetts Eye and Ear, Boston, Massachusetts, USA.,Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, Boston, Massachusetts, USA.,Program in Speech and Hearing Bioscience and Technology, Harvard University, Cambridge, Massachusetts, USA.,Harvard Program in Therapeutic Science, Harvard Medical School, Boston, Massachusetts, USA.,Harvard Stem Cell Institute, Cambridge, Massachusetts, USA
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4
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Mehri Ghahfarrokhi A, Jami MS, Hashemzadeh Chaleshtori M. Upregulation of Neuroprogenitor and Neural Markers via Enforced miR-124 and Growth Factor Treatment. INTERNATIONAL JOURNAL OF MOLECULAR AND CELLULAR MEDICINE 2020; 9:62-70. [PMID: 32832485 PMCID: PMC7422846 DOI: 10.22088/ijmcm.bums.9.1.62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Previous studies have shown that miR-124 plays an important role in the development of auditory neurons, which are degenerated in the sensorineural hearing loss. However, whether the combined use of miR-124 and growth factors can increase the expression of neural related markers in human dental pulp stem cells has been remained unknown so far. In this study, human dental pulp stem cells were transfected with miR-124 following treatment with brain-derived neurotrophic factor or epidermal growth factor/basic fibroblast growth factor. The expression of some neural related markers (nestin, SOX2, β-tubulin III, MAP2, and peripherin) was analyzed in two groups by qRT-PCR or immunofluorescence. Cellular treatment resulted in morphological changes including neurosphere-like colonies formation. Nestin and SOX2 were up-regulated, and MAP2 and peripherin were down-regulated in dental pulp stem cells transfected by miR-124 following treatment with brain-derived neurotrophic factor. Replacement of brain-derived neurotrophic factor with epidermal growth factor/ basic fibroblast growth factor resulted in the up-regulation of nestin, MAP2, peripherin, and β-tubulin III and down-regulation of SOX2. The expression of SOX2 and nestin was also confirmed by immunofluorescence. The combination of miR-124 and growth factors would provide a promising starting point for upregulating the neural progenitor markers in human dental pulp stem cells.
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Affiliation(s)
- Ameneh Mehri Ghahfarrokhi
- Department of Molecular Medicine, School of Advanced Technologies, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mohammad Saeid Jami
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran.,Department of Neurology, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, CA, USA
| | - Morteza Hashemzadeh Chaleshtori
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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5
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Heuer RA, Nella KT, Chang HT, Coots KS, Oleksijew AM, Roque CB, Silva LHA, McGuire TL, Homma K, Matsuoka AJ. Three-Dimensional Otic Neuronal Progenitor Spheroids Derived from Human Embryonic Stem Cells. Tissue Eng Part A 2020; 27:256-269. [PMID: 32580647 DOI: 10.1089/ten.tea.2020.0078] [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] [Indexed: 11/13/2022] Open
Abstract
Stem cell-replacement therapies have been proposed as a potential tool to treat sensorineural hearing loss by aiding the regeneration of spiral ganglion neurons (SGNs) in the inner ear. However, transplantation procedures have yet to be explored thoroughly to ensure proper cell differentiation and optimal transplant procedures. We hypothesized that the aggregation of human embryonic stem cell (hESC)-derived otic neuronal progenitor (ONP) cells into a multicellular form would improve their function and their survival in vivo post-transplantation. We generated hESC-derived ONP spheroids-an aggregate form conducive to differentiation, transplantation, and prolonged cell survival-to optimize conditions for their transplantation. Our findings indicate that these cell spheroids maintain the molecular and functional characteristics similar to those of ONP cells, which are upstream in the SGN lineage. Moreover, our phenotypical, electrophysiological, and mechanical data suggest an optimal spheroid transplantation point after 7 days of in vitro three-dimensional (3D) culture. We have also developed a feasible transplantation protocol for these spheroids using a micropipette aided by a digital microinjection system. In summary, the present work demonstrates that the transplantation of ONP cells in spheroid form into the inner ear through micropipette 7 days after seeding for 3D spheroid culture is an expedient and viable method for stem cell replacement therapies in the inner ear.
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Affiliation(s)
- Rachel A Heuer
- Department of Otolaryngology and Head and Neck Surgery and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Kevin T Nella
- Department of Otolaryngology and Head and Neck Surgery and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Hsiang-Tsun Chang
- Department of Otolaryngology and Head and Neck Surgery and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Kyle S Coots
- Department of Otolaryngology and Head and Neck Surgery and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Andrew M Oleksijew
- Department of Otolaryngology and Head and Neck Surgery and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Christian B Roque
- Department of Otolaryngology and Head and Neck Surgery and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Luisa H A Silva
- Department of Otolaryngology and Head and Neck Surgery and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Tammy L McGuire
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Kazuaki Homma
- Department of Otolaryngology and Head and Neck Surgery and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.,Hugh Knowles Center for Hearing Research and Northwestern University, Evanston, Illinois, USA
| | - Akihiro J Matsuoka
- Department of Otolaryngology and Head and Neck Surgery and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.,Hugh Knowles Center for Hearing Research and Northwestern University, Evanston, Illinois, USA.,Department of Communication Sciences and Disorders, Northwestern University, Evanston, Illinois, USA
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6
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Harberts J, Kusch M, O’Sullivan J, Zierold R, Blick RH. A Temperature-Controlled Patch Clamp Platform Demonstrated on Jurkat T Lymphocytes and Human Induced Pluripotent Stem Cell-Derived Neurons. Bioengineering (Basel) 2020; 7:E46. [PMID: 32455868 PMCID: PMC7355542 DOI: 10.3390/bioengineering7020046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 05/20/2020] [Accepted: 05/20/2020] [Indexed: 01/07/2023] Open
Abstract
Though patch clamping at room temperature is a widely disseminated standard procedure in the electrophysiological community, it does not represent the biological system in mammals at around 37 °C. In order to better mimic the natural environment in electrophysiological studies, we present a custom-built, temperature-controlled patch clamp platform for upright microscopes, which can easily be adapted to any upright patch clamp setup independently, whether commercially available or home built. Our setup can both cool and heat the platform having only small temperature variations of less than 0.5 °C. We demonstrate our setup with patch clamp measurements at 36 °C on Jurkat T lymphocytes and human induced pluripotent stem cell-derived neurons. Passive membrane parameters and characteristic electrophysiological properties, such as the gating properties of voltage-gated ion channels and the firing of action potentials, are compared to measurements at room temperature. We observe that many processes that are not explicitly considered as temperature dependent show changes with temperature. Thus, we believe in the need of a temperature control in patch clamp measurements if improved physiological conditions are required. Furthermore, we advise researchers to only compare electrophysiological results directly that have been measured at similar temperatures since small variations in cellular properties might be caused by temperature alterations.
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Affiliation(s)
- Jann Harberts
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany; (J.H.); (M.K.); (R.H.B.)
| | - Max Kusch
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany; (J.H.); (M.K.); (R.H.B.)
| | - John O’Sullivan
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany; (J.H.); (M.K.); (R.H.B.)
- Department of Physics and Astronomy, University College London, London WC1E 6BT , UK
| | - Robert Zierold
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany; (J.H.); (M.K.); (R.H.B.)
| | - Robert H. Blick
- Center for Hybrid Nanostructures, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany; (J.H.); (M.K.); (R.H.B.)
- Material Science and Engineering, College of Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
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7
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Tang PC, Hashino E, Nelson RF. Progress in Modeling and Targeting Inner Ear Disorders with Pluripotent Stem Cells. Stem Cell Reports 2020; 14:996-1008. [PMID: 32442531 PMCID: PMC7355141 DOI: 10.1016/j.stemcr.2020.04.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 12/12/2022] Open
Abstract
Sensorineural hearing loss and vestibular dysfunction are caused by damage to neurons and mechanosensitive hair cells, which do not regenerate to any clinically relevant extent in humans. Several protocols have been devised to direct pluripotent stem cells (PSCs) into inner ear hair cells and neurons, which display many properties of their native counterparts. The efficiency, reproducibility, and scalability of these protocols are enhanced by incorporating knowledge of inner ear development. Modeling human diseases in vitro through genetic manipulation of PSCs is already feasible, thereby permitting the elucidation of mechanistic understandings of a wide array of disease etiologies. Early studies on transplantation of PSC-derived otic progenitors have been successful in certain animal models, yet restoration of function and long-term cell survival remain unrealized. Through further research, PSC-based approaches will continue to revolutionize our understanding of inner ear biology and contribute to the development of therapeutic treatments for inner ear disorders.
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Affiliation(s)
- Pei-Ciao Tang
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Eri Hashino
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA; Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Rick F Nelson
- Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
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8
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Organotypic Cocultures of Human Pluripotent Stem Cell Derived-Neurons with Mammalian Inner Ear Hair Cells and Cochlear Nucleus Slices. Stem Cells Int 2019; 2019:8419493. [PMID: 31827535 PMCID: PMC6886346 DOI: 10.1155/2019/8419493] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 08/29/2019] [Accepted: 09/21/2019] [Indexed: 11/27/2022] Open
Abstract
Stem cells have been touted as a source of potential replacement neurons for inner ear degeneration for almost two decades now; yet to date, there are few studies describing the use of human pluripotent stem cells (hPSCs) for this purpose. If stem cell therapies are to be used clinically, it is critical to validate the usefulness of hPSC lines in vitro and in vivo. Here, we present the first quantitative evidence that differentiated hPSC-derived neurons that innervate both the inner ear hair cells and cochlear nucleus neurons in coculture, with significantly more new synaptic contacts formed on target cell types. Nascent contacts between stem cells and hair cells were immunopositive for both synapsin I and VGLUT1, closely resembling expression of these puncta in endogenous postnatal auditory neurons and control cocultures. When hPSCs were cocultured with cochlear nucleus brainstem slice, significantly greater numbers of VGLUT1 puncta were observed in comparison to slice alone. New VGLUT1 puncta in cocultures with cochlear nucleus slice were not significantly different in size, only in quantity. This experimentation describes new coculture models for assessing auditory regeneration using well-characterised hPSC-derived neurons and highlights useful methods to quantify the extent of innervation on different cell types in the inner ear and brainstem.
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9
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Increased levels of miR-124 in human dental pulp stem cells alter the expression of neural markers. J Otol 2019; 14:121-127. [PMID: 32742271 PMCID: PMC7387844 DOI: 10.1016/j.joto.2019.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/10/2019] [Accepted: 04/10/2019] [Indexed: 12/22/2022] Open
Abstract
Auditory neuropathy is the particular form of deafness in humans which cannot be treated by replacement therapy. Human dental pulp stem cells (hDPSCs) are derived from an ectomesenchymal neural crest cell population. Therefore, they possess a promising capacity for neuronal differentiation and repair. miR-124, a key regulator of neuronal development in the inner ear, is expressed at high levels in auditory and vestibular neurons. Here, we evaluated the possible effect of miR-124 in alteration of neural protein markers expression. Using quantitative reverse transcription-PCR (qRT-PCR) analyses and immunofluorescence staining, we studied the expression patterns of neural progenitor markers (Nestin, NOTCH1, and SOX2) and neural markers (β-tubulin III, GATA-3, and peripherin) upon transfection of hDPSCs with miR-124. The qRT-PCR results showed that Nestin was upregulated 6 h post-transfection. In contrast, Nestin expression exhibited a decreasing trend 24 h and 48 h post-transfection. Higher levels of β-tubulin III, 6 h and 16 h post transfection in RNA level as compared with control cells, were determined in transfected DPSCs. However, β-tubulin-III expression decreased 48 h post-transfection. The immunoflourescence results indicated that transfection of hDPSCs with miR-124, only affected Nestin among the studied neural progenitor and neural marker expression in protein level.
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Key Words
- DPSCs
- Nestin
- Sensorineural hearing loss
- Spiral ganglion neurons
- basic fibroblast growth factor, bFGF
- bone morphogenetic protein 4, BMP4
- bovin serum albumin, BSA
- brain derived neurotrophic factor, BDNF
- epidermal growth factor, EGF
- human dental pulp stem cells, hDPSCs
- miR-124
- neurotrophin-3, NT3
- quantitative reverse transcription-PCR, qRT-PCR
- sonic hedgehog, SHH
- spiral ganglion neurons, SGNs
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Ribecco-Lutkiewicz M, Sodja C, Haukenfrers J, Haqqani AS, Ly D, Zachar P, Baumann E, Ball M, Huang J, Rukhlova M, Martina M, Liu Q, Stanimirovic D, Jezierski A, Bani-Yaghoub M. A novel human induced pluripotent stem cell blood-brain barrier model: Applicability to study antibody-triggered receptor-mediated transcytosis. Sci Rep 2018; 8:1873. [PMID: 29382846 PMCID: PMC5789839 DOI: 10.1038/s41598-018-19522-8] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 12/27/2017] [Indexed: 12/21/2022] Open
Abstract
We have developed a renewable, scalable and transgene free human blood-brain barrier model, composed of brain endothelial cells (BECs), generated from human amniotic fluid derived induced pluripotent stem cells (AF-iPSC), which can also give rise to syngeneic neural cells of the neurovascular unit. These AF-iPSC-derived BECs (i-BEC) exhibited high transendothelial electrical resistance (up to 1500 Ω cm2) inducible by astrocyte-derived molecular cues and retinoic acid treatment, polarized expression of functional efflux transporters and receptor mediated transcytosis triggered by antibodies against specific receptors. In vitro human BBB models enable pre-clinical screening of central nervous system (CNS)-targeting drugs and are of particular importance for assessing species-specific/selective transport mechanisms. This i-BEC human BBB model discriminates species-selective antibody- mediated transcytosis mechanisms, is predictive of in vivo CNS exposure of rodent cross-reactive antibodies and can be implemented into pre-clinical CNS drug discovery and development processes.
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Affiliation(s)
- Maria Ribecco-Lutkiewicz
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Caroline Sodja
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Julie Haukenfrers
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Arsalan S Haqqani
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Dao Ly
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Peter Zachar
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Ewa Baumann
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Marguerite Ball
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Jez Huang
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Marina Rukhlova
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Marzia Martina
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Qing Liu
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Danica Stanimirovic
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Anna Jezierski
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada.
| | - Mahmud Bani-Yaghoub
- Human Health Therapeutics Portfolio, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
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11
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Matsuoka AJ, Morrissey ZD, Zhang C, Homma K, Belmadani A, Miller CA, Chadly DM, Kobayashi S, Edelbrock AN, Tanaka‐Matakatsu M, Whitlon DS, Lyass L, McGuire TL, Stupp SI, Kessler JA. Directed Differentiation of Human Embryonic Stem Cells Toward Placode-Derived Spiral Ganglion-Like Sensory Neurons. Stem Cells Transl Med 2017; 6:923-936. [PMID: 28186679 PMCID: PMC5442760 DOI: 10.1002/sctm.16-0032] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 08/31/2016] [Accepted: 10/19/2016] [Indexed: 12/15/2022] Open
Abstract
The ability to generate spiral ganglion neurons (SGNs) from stem cells is a necessary prerequisite for development of cell-replacement therapies for sensorineural hearing loss. We present a protocol that directs human embryonic stem cells (hESCs) toward a purified population of otic neuronal progenitors (ONPs) and SGN-like cells. Between 82% and 95% of these cells express SGN molecular markers, they preferentially extend neurites to the cochlear nucleus rather than nonauditory nuclei, and they generate action potentials. The protocol follows an in vitro stepwise recapitulation of developmental events inherent to normal differentiation of hESCs into SGNs, resulting in efficient sequential generation of nonneuronal ectoderm, preplacodal ectoderm, early prosensory ONPs, late ONPs, and cells with cellular and molecular characteristics of human SGNs. We thus describe the sequential signaling pathways that generate the early and later lineage species in the human SGN lineage, thereby better describing key developmental processes. The results indicate that our protocol generates cells that closely replicate the phenotypic characteristics of human SGNs, advancing the process of guiding hESCs to states serving inner-ear cell-replacement therapies and possible next-generation hybrid auditory prostheses. © Stem Cells Translational Medicine 2017;6:923-936.
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Affiliation(s)
- Akihiro J. Matsuoka
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
- Department of Communication Sciences and DisordersChicagoILUSA
- Knowles Hearing CenterChicagoILUSA
| | | | - Chaoying Zhang
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
| | - Kazuaki Homma
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
- Knowles Hearing CenterChicagoILUSA
| | - Abdelhak Belmadani
- Department of Molecular Pharmacology and Biological ChemistryChicagoILUSA
| | | | - Duncan M. Chadly
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
| | - Shun Kobayashi
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
| | | | | | - Donna S. Whitlon
- Department of Otolaryngology and Head and Neck SurgeryChicagoILUSA
- Knowles Hearing CenterChicagoILUSA
| | - Ljuba Lyass
- Department of Biomedical EngineeringChicagoILUSA
| | | | - Samuel I. Stupp
- Department of MedicineChicagoILUSA
- Department of Biomedical EngineeringChicagoILUSA
- Simpson Querrey Institute for BioNanotechnologyChicagoILUSA
- Department of ChemistryNorthwestern University
- Department of Materials Science & EngineeringNorthwestern University
| | - John A. Kessler
- Department of NeurologyFeinberg School of Medicine, Northwestern UniversityChicagoILUSA
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12
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Enriched retinal ganglion cells derived from human embryonic stem cells. Sci Rep 2016; 6:30552. [PMID: 27506453 PMCID: PMC4978994 DOI: 10.1038/srep30552] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 07/04/2016] [Indexed: 12/21/2022] Open
Abstract
Optic neuropathies are characterised by a loss of retinal ganglion cells (RGCs) that lead to vision impairment. Development of cell therapy requires a better understanding of the signals that direct stem cells into RGCs. Human embryonic stem cells (hESCs) represent an unlimited cellular source for generation of human RGCs in vitro. In this study, we present a 45-day protocol that utilises magnetic activated cell sorting to generate enriched population of RGCs via stepwise retinal differentiation using hESCs. We performed an extensive characterization of these stem cell-derived RGCs by examining the gene and protein expressions of a panel of neural/RGC markers. Furthermore, whole transcriptome analysis demonstrated similarity of the hESC-derived RGCs to human adult RGCs. The enriched hESC-RGCs possess long axons, functional electrophysiological profiles and axonal transport of mitochondria, suggestive of maturity. In summary, this RGC differentiation protocol can generate an enriched population of functional RGCs from hESCs, allowing future studies on disease modeling of optic neuropathies and development of cell therapies.
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13
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Gillespie LN, Richardson RT, Nayagam BA, Wise AK. Treating hearing disorders with cell and gene therapy. J Neural Eng 2015; 11:065001. [PMID: 25420002 DOI: 10.1088/1741-2560/11/6/065001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Hearing loss is an increasing problem for a substantial number of people and, with an aging population, the incidence and severity of hearing loss will become more significant over time. There are very few therapies currently available to treat hearing loss, and so the development of new therapeutic strategies for hearing impaired individuals is of paramount importance to address this unmet clinical need. Most forms of hearing loss are progressive in nature and therefore an opportunity exists to develop novel therapeutic approaches to slow or halt hearing loss progression, or even repair or replace lost hearing function. Numerous emerging technologies have potential as therapeutic options. This paper details the potential of cell- and gene-based therapies to provide therapeutic agents to protect sensory and neural cells from various insults known to cause hearing loss; explores the potential of replacing lost sensory and nerve cells using gene and stem cell therapy; and describes the considerations for clinical translation and the challenges that need to be overcome.
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14
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Ohnishi H, Kawasaki T, Deguchi T, Yuba S. Generation of Xeroderma Pigmentosum-A Patient-Derived Induced Pluripotent Stem Cell Line for Use As Future Disease Model. Cell Reprogram 2015; 17:268-74. [PMID: 26090552 DOI: 10.1089/cell.2014.0104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Xeroderma pigmentosum group A (XP-A) is a genetic disorder in which there is an abnormality in nucleotide excision repair that causes hypersensitivity to sunlight and multiple skin cancers. The development of central and peripheral neurological disorders not correlated to ultraviolet light exposure is associated with XP-A. The genes responsible for XP-A have been identified and a XPA knockout mouse has been generated. These knockout mice exhibit cutaneous symptoms, but they do not show neurological disorders. The mechanism of pathogenesis of neurological disorders is still unclear and therapeutic methods have not been established. Therefore, we generated XP-A patient-derived human induced pluripotent stem cells (XPA-iPSCs) to produce in vitro models of neurological disorders. We obtained iPSC lines from fibroblasts of two patients carrying different mutations. Drugs screened using XPA-iPSC lines can be helpful for treating XP-A patients in Japan. Additionally, we revealed that these iPSCs have the potential to differentiate into neural lineage cells, including dopaminergic neurons, which decrease in XP-A patients. Our results indicate that expression of the normal XPA gene without mutations is not required for generation of iPSCs and differentiation of iPSCs into neural lineage cells. XPA-iPSCs may become useful models that clarify our understanding of neurological pathogenesis and help to establish therapeutic methods.
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Affiliation(s)
- Hiroe Ohnishi
- 1 Tissue Engineering Research Group, Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) , Amagasaki, Hyogo 661-0974, Japan .,4 Present address: Department of Otolaryngology, Graduate School of Medicine, Kyoto University , Kyoto 606-8507, Japan
| | - Takashi Kawasaki
- 2 Functional Biomolecular Research Group, Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) , Amagasaki, Hyogo 661-0974, Japan
| | - Tomonori Deguchi
- 3 Stress Signal Research Group, Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) , Ikeda, Osaka 563-8577, Japan
| | - Shunsuke Yuba
- 1 Tissue Engineering Research Group, Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) , Amagasaki, Hyogo 661-0974, Japan
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15
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Differentiation of human breast-milk stem cells to neural stem cells and neurons. Neurol Res Int 2014; 2014:807896. [PMID: 25506428 PMCID: PMC4260437 DOI: 10.1155/2014/807896] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 10/08/2014] [Accepted: 10/20/2014] [Indexed: 12/24/2022] Open
Abstract
Objectives. Human breast milk contains a heterogeneous population of cells that have the potential to provide a noninvasive source of cells for cell therapy in many neurodegenerative diseases without any ethical concern. The objectives of this study were to differentiate the breast milk-derived stem cells (BMDSC) toward neural stem cells and then into the neurons and neuroglia. Materials and Methods. To do this, the BMDSC were isolated from human breast milk and cultured in Dulbecco's modified Eagle medium/F12 (DMEM/F12) containing fibroblast growth factor (bFGF). The cells were then characterized by evaluation of the embryonic and stem cell markers. Then, the cells were exposed to culture medium containing 1% B27 and 2% N2 for 7–10 days followed by medium supplemented with B27, N2, bFGF 10 µg/mL, and endothelial growth factor (EGF) 20 µg/mL. Then, the sphere-forming assay was performed. The spheres were then differentiated into three neural lineages by withdrawing growth factor in the presence of 5% FBS (fetal bovine serum). The immunofluorescence was done for β-tubulin III, O4, and GFAP (glial fibrillary acidic protein). Results. The results indicated that the cells expressed both embryonic and mesenchymal stem cell (MSC) markers. They also showed neurospheres formation that was nestin-positive. The cells were also differentiated into all three neural lineages. Conclusion. The BMDSC can behave in the same way with neural stem cells. They were differentiated into oligodendrocytes, and astrocytes as well as neurons.
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16
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Telias M, Segal M, Ben-Yosef D. Electrical maturation of neurons derived from human embryonic stem cells. F1000Res 2014; 3:196. [PMID: 25309736 PMCID: PMC4184377 DOI: 10.12688/f1000research.4943.2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/01/2014] [Indexed: 11/20/2022] Open
Abstract
In-vitro neuronal differentiation of human pluripotent stem cells has become a widely used tool in disease modeling and prospective regenerative medicine. Most studies evaluate neurons molecularly and only a handful of them use electrophysiological tools to directly indicate that these are genuine neurons. Therefore, the specific timing of development of intrinsic electrophysiological properties and synaptic capabilities remains poorly understood. Here we describe a systematic analysis of developing neurons derived in-vitro from human embryonic stem cells (hESCs). We show that hESCs differentiated in-vitro into early embryonic neurons, displaying basically mature morphological and electrical features as early as day 37. This early onset of action potential discharges suggests that first stages of neurogenesis in humans are already associated with electrical maturation. Spike frequency, amplitude, duration, threshold and after hyperpolarization were found to be the most predictive parameters for electrical maturity. Furthermore, we were able to detect spontaneous synaptic activity already at these early time-points, demonstrating that neuronal connectivity can develop concomitantly with the gradual process of electrical maturation. These results highlight the functional properties of hESCs in the process of their development into neurons. Moreover, our results provide practical tools for the direct measurement of functional maturity, which can be reproduced and implemented for stem cell research of neurogenesis in general, and neurodevelopmental disorders in particular.
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Affiliation(s)
- Michael Telias
- Wolfe PGD-SC Lab, Racine IVF Unit, Lis Maternity Hospital, Tel-Aviv Sourasky Medical Center, Tel-Aviv, 64239, Israel ; Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 64239, Israel
| | - Menahem Segal
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Dalit Ben-Yosef
- Wolfe PGD-SC Lab, Racine IVF Unit, Lis Maternity Hospital, Tel-Aviv Sourasky Medical Center, Tel-Aviv, 64239, Israel ; Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 64239, Israel
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17
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Gunewardene N, Bergen NV, Crombie D, Needham K, Dottori M, Nayagam BA. Directing human induced pluripotent stem cells into a neurosensory lineage for auditory neuron replacement. Biores Open Access 2014; 3:162-75. [PMID: 25126480 PMCID: PMC4120935 DOI: 10.1089/biores.2014.0019] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Emerging therapies for sensorineural hearing loss include replacing damaged auditory neurons (ANs) using stem cells. Ultimately, it is important that these replacement cells can be patient-matched to avoid immunorejection. As human induced pluripotent stem cells (hiPSCs) can be obtained directly from the patient, they offer an opportunity to generate patient-matched neurons for transplantation. Here, we used an established neural induction protocol to differentiate two hiPSC lines (iPS1 and iPS2) and one human embryonic stem cell line (hESC; H9) toward a neurosensory lineage in vitro. Immunocytochemistry and qRT-PCR were used to analyze the expression of key markers involved in AN development at defined time points of differentiation. The hiPSC- and hESC-derived neurosensory progenitors expressed the dorsal hindbrain marker (PAX7), otic placodal marker (PAX2), proneurosensory marker (SOX2), ganglion neuronal markers (NEUROD1, BRN3A, ISLET1, ßIII-tubulin, Neurofilament kDa 160), and sensory AN markers (GATA3 and VGLUT1) over the time course examined. The hiPSC- and hESC-derived neurosensory progenitors had the highest expression levels of the sensory neural markers at 35 days in vitro. Furthermore, the neurons generated from this assay were found to be electrically active. While all cell lines analyzed produced functional neurosensory-like progenitors, variabilities in the levels of marker expression were observed between hiPSC lines and within samples of the same cell line, when compared with the hESC controls. Overall, these findings indicate that this neural assay was capable of differentiating hiPSCs toward a neurosensory lineage but emphasize the need for improving the consistency in the differentiation of hiPSCs into the required lineages.
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Affiliation(s)
- Niliksha Gunewardene
- Department of Otolaryngology, University of Melbourne , East Melbourne, Victoria, Australia
| | - Nicole Van Bergen
- Centre for Eye Research Australia, University of Melbourne , East Melbourne, Victoria, Australia
| | - Duncan Crombie
- Centre for Eye Research Australia, University of Melbourne , East Melbourne, Victoria, Australia
| | - Karina Needham
- Department of Otolaryngology, University of Melbourne , East Melbourne, Victoria, Australia
| | - Mirella Dottori
- Centre for Neural Engineering, University of Melbourne , Parkville, Victoria, Australia
| | - Bryony A Nayagam
- Centre for Eye Research Australia, University of Melbourne , East Melbourne, Victoria, Australia . ; Department of Audiology and Speech Pathology, University of Melbourne , Parkville, Victoria, Australia . ; Bionics Institute, University of Melbourne , East Melbourne, Victoria, Australia
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18
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Bird MJ, Needham K, Frazier AE, van Rooijen J, Leung J, Hough S, Denham M, Thornton ME, Parish CL, Nayagam BA, Pera M, Thorburn DR, Thompson LH, Dottori M. Functional characterization of Friedreich ataxia iPS-derived neuronal progenitors and their integration in the adult brain. PLoS One 2014; 9:e101718. [PMID: 25000412 PMCID: PMC4084949 DOI: 10.1371/journal.pone.0101718] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 06/11/2014] [Indexed: 01/20/2023] Open
Abstract
Friedreich ataxia (FRDA) is an autosomal recessive disease characterised by neurodegeneration and cardiomyopathy that is caused by an insufficiency of the mitochondrial protein, frataxin. Our previous studies described the generation of FRDA induced pluripotent stem cell lines (FA3 and FA4 iPS) that retained genetic characteristics of this disease. Here we extend these studies, showing that neural derivatives of FA iPS cells are able to differentiate into functional neurons, which don't show altered susceptibility to cell death, and have normal mitochondrial function. Furthermore, FA iPS-derived neural progenitors are able to differentiate into functional neurons and integrate in the nervous system when transplanted into the cerebellar regions of host adult rodent brain. These are the first studies to describe both in vitro and in vivo characterization of FA iPS-derived neurons and demonstrate their capacity to survive long term. These findings are highly significant for developing FRDA therapies using patient-derived stem cells.
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Affiliation(s)
- Matthew J. Bird
- Murdoch Childrens Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia
- Centre for Neural Engineering, Department of Electrical and Electronic Engineering, The University of Melbourne, Melbourne, Victoria, Australia
| | - Karina Needham
- Department of Otolaryngology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Ann E. Frazier
- Murdoch Childrens Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia
| | - Jorien van Rooijen
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
| | - Jessie Leung
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
| | - Shelley Hough
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
| | - Mark Denham
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
| | - Matthew E. Thornton
- Division of Maternal Fetal Medicine, Saban Research Institute of Children's Hospital of Los Angeles, Los Angeles, California, United States of America
| | - Clare L. Parish
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Bryony A. Nayagam
- Department of Audiology and Speech Pathology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Martin Pera
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria, Australia
- Walter and Eliza Hall Institute, Melbourne, Victoria, Australia
| | - David R. Thorburn
- Murdoch Childrens Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia
- Victorian Clinical Genetics Services, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Lachlan H. Thompson
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Mirella Dottori
- Centre for Neural Engineering, Department of Electrical and Electronic Engineering, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
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