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Tollance A, Prola A, Michel D, Bouche A, Turzi A, Hannouche D, Berndt S, Laumonier T. Platelet-Rich Plasma Promotes the Expansion of Human Myoblasts and Favors the In Vitro Generation of Human Muscle Reserve Cells in a Deeper State of Quiescence. Stem Cell Rev Rep 2024; 20:1981-1994. [PMID: 39001964 DOI: 10.1007/s12015-024-10760-0] [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] [Accepted: 06/30/2024] [Indexed: 07/15/2024]
Abstract
Stem cell therapy holds significant potential for skeletal muscle repair, with in vitro-generated human muscle reserve cells (MuRCs) emerging as a source of quiescent myogenic stem cells that can be injected to enhance muscle regeneration. However, the clinical translation of such therapies is hampered by the need for fetal bovine serum (FBS) during the in vitro generation of human MuRCs. This study aimed to determine whether fresh allogeneic human platelet-rich plasma (PRP) combined or not with hyaluronic acid (PRP-HA) could effectively replace xenogeneic FBS for the ex vivo expansion and differentiation of human primary myoblasts. Cells were cultured in media supplemented with either PRP or PRP-HA and their proliferation rate, cytotoxicity and myogenic differentiation potential were compared with those cultured in media supplemented with FBS. The results showed similar proliferation rates among human myoblasts cultured in PRP, PRP-HA or FBS supplemented media, with no cytotoxic effects. Human myoblasts cultured in PRP or PRP-HA showed reduced fusion ability upon differentiation. Nevertheless, we also observed that human MuRCs generated from PRP or PRP-HA myogenic cultures, exhibited increased Pax7 expression and delayed re-entry into the cell cycle upon reactivation, indicating a deeper quiescent state of human MuRCs. These results suggest that allogeneic human PRP effectively replaces FBS for the ex vivo expansion and differentiation of human myoblasts and favors the in vitro generation of Pax7High human MuRCs, with important implications for the advancement of stem cell-based muscle repair strategies.
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Affiliation(s)
- Axel Tollance
- Department of Orthopedic Surgery, Geneva University Hospitals & Faculty of Medicine, Geneva, Switzerland
- Regen Lab SA, 1052, Le Mont-Sur-Lausanne, Switzerland
| | - Alexandre Prola
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Geneva, Switzerland
| | - Diego Michel
- Department of Orthopedic Surgery, Geneva University Hospitals & Faculty of Medicine, Geneva, Switzerland
| | - Axelle Bouche
- Department of Orthopedic Surgery, Geneva University Hospitals & Faculty of Medicine, Geneva, Switzerland
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Geneva, Switzerland
| | - Antoine Turzi
- Regen Lab SA, 1052, Le Mont-Sur-Lausanne, Switzerland
| | - Didier Hannouche
- Department of Orthopedic Surgery, Geneva University Hospitals & Faculty of Medicine, Geneva, Switzerland
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Geneva, Switzerland
| | - Sarah Berndt
- Regen Lab SA, 1052, Le Mont-Sur-Lausanne, Switzerland
| | - Thomas Laumonier
- Department of Orthopedic Surgery, Geneva University Hospitals & Faculty of Medicine, Geneva, Switzerland.
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Geneva, Switzerland.
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Tollance A, Koenig S, Liaudet N, Frieden M. Activation and Migration of Human Skeletal Muscle Stem Cells In Vitro Differently Rely on Calcium Signals. Cells 2022; 11:cells11101689. [PMID: 35626726 PMCID: PMC9140175 DOI: 10.3390/cells11101689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/11/2022] [Accepted: 05/17/2022] [Indexed: 02/04/2023] Open
Abstract
Muscle regeneration is essential for proper muscle homeostasis and relies primarily on muscle stem cells (MuSC). MuSC are maintained quiescent in their niche and can be activated following muscle injury. Using an in vitro model of primary human quiescent MuSC (called reserve cells, RC), we analyzed their Ca2+ response following their activation by fetal calf serum and assessed the role of Ca2+ in the processes of RC activation and migration. The results showed that RC displayed a high response heterogeneity in a cell-dependent manner following serum stimulation. Most of these responses relied on inositol 1,4,5-trisphosphate (IP3)-dependent Ca2+ release associated with Ca2+ influx, partly due to store-operated calcium entry. Our study further found that blocking the IP3 production, Ca2+ influx, or both did not prevent the activation of RC. Intra- or extracellular Ca2+ chelation did not impede RC activation. However, their migration potential depended on Ca2+ responses displayed upon stimulation, and Ca2+ blockers inhibited their movement. We conclude that the two major steps of muscle regeneration, namely the activation and migration of MuSC, differently rely on Ca2+ signals.
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Affiliation(s)
- Axel Tollance
- Department of Cell Physiology and Metabolism, University of Geneva Medical Center, 1211 Geneva, Switzerland;
| | - Stéphane Koenig
- Department of Cell Physiology and Metabolism, University of Geneva Medical Center, 1211 Geneva, Switzerland;
- Correspondence: (S.K.); (M.F.)
| | - Nicolas Liaudet
- Bioimaging Core Facility, University of Geneva Medical Center, 1211 Geneva, Switzerland;
| | - Maud Frieden
- Department of Cell Physiology and Metabolism, University of Geneva Medical Center, 1211 Geneva, Switzerland;
- Correspondence: (S.K.); (M.F.)
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Xu L, Feng Z, Dai Z, Lee WYW, Wu Z, Liu Z, Sun X, Tang N, Cheng JCY, Qiu Y, Zhu Z. A Functional SNP in the Promoter of LBX1 Is Associated With the Development of Adolescent Idiopathic Scoliosis Through Involvement in the Myogenesis of Paraspinal Muscles. Front Cell Dev Biol 2021; 9:777890. [PMID: 34917617 PMCID: PMC8670502 DOI: 10.3389/fcell.2021.777890] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 10/28/2021] [Indexed: 01/22/2023] Open
Abstract
Previous studies have shown that LBX1 is associated with adolescent idiopathic scoliosis (AIS) in multiple populations. For the first time, rs1322330 located in the putative promoter region of LBX1 was found significantly associated with AIS in the Chinese population [p = 6.08 × 10–14, odds ratio (OR) = 1.42, 95% confidence interval of 1.03–1.55]. Moreover, the luciferase assay and electrophoretic mobility shift assay supported that the allele A of rs1322330 could down-regulate the expression of LBX1 in the paraspinal muscles of AIS. In addition, silencing LBX1 in the myosatellite cells resulted in significantly inhibited cell viability and myotube formation, which supported an essential role of LBX1 in muscle development of AIS. To summarize, rs1322330 may be a novel functional SNP regulating the expression of LBX1, which was involved in the etiology of AIS possibly via regulation of myogenesis in the paraspinal muscles.
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Affiliation(s)
- Leilei Xu
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
| | - Zhenhua Feng
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
| | - Zhicheng Dai
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
| | - Wayne Y. W. Lee
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
- SH Ho Scoliosis Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Zhichong Wu
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
| | - Zhen Liu
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
| | - Xu Sun
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
| | - Nelson Tang
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
- SH Ho Scoliosis Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
- Department of Chemical Pathology, The Chinese University of Hong Kong, Hong Kong, China
| | - Jack Chun-Yiu Cheng
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
- SH Ho Scoliosis Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
| | - Yong Qiu
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
| | - Zezhang Zhu
- Division of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Joint Scoliosis Research Center of The Chinese University of Hong Kong and Nanjing University, Nanjing/Hong Kong, China
- *Correspondence: Zezhang Zhu,
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Brunetti J, Koenig S, Monnier A, Frieden M. Nanopattern surface improves cultured human myotube maturation. Skelet Muscle 2021; 11:12. [PMID: 33952323 PMCID: PMC8097894 DOI: 10.1186/s13395-021-00268-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/19/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In vitro maturation of human primary myoblasts using 2D culture remains a challenging process and leads to immature fibers with poor internal organization and function. This would however represent a valuable system to study muscle physiology or pathophysiology from patient myoblasts, at a single-cell level. METHODS Human primary myoblasts were cultured on 800-nm wide striated surface between two layers of Matrigel, and in a media supplemented with an inhibitor of TGFβ receptor. Gene expression, immunofluorescence, and Ca2+ measurements upon electrical stimulations were performed at various time points during maturation to assess the organization and function of the myotubes. RESULTS We show that after 10 days in culture, myotubes display numerous functional acetylcholine receptor clusters and express the adult isoforms of myosin heavy chain and dihydropyridine receptor. In addition, the myotubes are internally well organized with striations of α-actinin and STIM1, and occasionally ryanodine receptor 1. We also demonstrate that the myotubes present robust Ca2+ responses to repetitive electrical stimulations. CONCLUSION The present method describes a fast and efficient system to obtain well matured and functional myotubes in 2D culture allowing thorough analysis of single-cell Ca2+ signals.
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Affiliation(s)
- Jessica Brunetti
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Stéphane Koenig
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Arthur Monnier
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Maud Frieden
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland.
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Interleukin-6 Induces Myogenic Differentiation via JAK2-STAT3 Signaling in Mouse C2C12 Myoblast Cell Line and Primary Human Myoblasts. Int J Mol Sci 2019; 20:ijms20215273. [PMID: 31652937 PMCID: PMC6862063 DOI: 10.3390/ijms20215273] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/11/2019] [Accepted: 10/11/2019] [Indexed: 12/25/2022] Open
Abstract
Postnatal muscle growth and exercise- or injury-induced regeneration are facilitated by myoblasts. Myoblasts respond to a variety of proteins such as cytokines that activate various signaling cascades. Cytokines belonging to the interleukin 6 superfamily (IL-6) influence myoblasts' proliferation but their effect on differentiation is still being researched. The Janus kinase (JAK)-signal transducer and activator of transcription (STAT) pathway is one of the key signaling pathways identified to be activated by IL-6. The aim of this study was to investigate myoblast fate as well as activation of JAK-STAT pathway at different physiologically relevant IL-6 concentrations (10 pg/mL; 100 pg/mL; 10 ng/mL) in the C2C12 mouse myoblast cell line and primary human myoblasts, isolated from eight young healthy male volunteers. Myoblasts' cell cycle progression, proliferation and differentiation in vitro were assessed. Low IL-6 concentrations facilitated cell cycle transition from the quiescence/Gap1 (G0/G1) to the synthesis (S-) phases. Low and medium IL-6 concentrations decreased the expression of myoblast determination protein 1 (MyoD) and myogenin and increased proliferating cell nuclear antigen (PCNA) expression. In contrast, high IL-6 concentration shifted a larger proportion of cells to the pro-differentiation G0/G1 phase of the cell cycle, substantiated by significant increases of both MyoD and myogenin expression and decreased PCNA expression. Low IL-6 concentration was responsible for prolonged JAK1 activation and increased suppressor of cytokine signaling 1 (SOCS1) protein expression. JAK-STAT inhibition abrogated IL-6-mediated C2C12 cell proliferation. In contrast, high IL-6 initially increased JAK1 activation but resulted in prolonged JAK2 activation and elevated SOCS3 protein expression. High IL-6 concentration decreased interleukin-6 receptor (IL-6R) expression 24 h after treatment whilst low IL-6 concentration increased IL-6 receptor (IL-6R) expression at the same time point. In conclusion, this study demonstrated that IL-6 has concentration- and time-dependent effects on both C2C12 mouse myoblasts and primary human myoblasts. Low IL-6 concentration induces proliferation whilst high IL-6 concentration induces differentiation. These effects are mediated by specific components of the JAK/STAT/SOCS pathway.
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Bulla M, Gyimesi G, Kim JH, Bhardwaj R, Hediger MA, Frieden M, Demaurex N. ORAI1 channel gating and selectivity is differentially altered by natural mutations in the first or third transmembrane domain. J Physiol 2018; 597:561-582. [PMID: 30382595 PMCID: PMC6332830 DOI: 10.1113/jp277079] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 10/31/2018] [Indexed: 12/12/2022] Open
Abstract
KEY POINTS Gain-of-function mutations in the highly selective Ca2+ channel ORAI1 cause tubular aggregate myopathy (TAM) characterized by muscular pain, weakness and cramping. TAM-associated mutations in ORAI1 first and third transmembrane domain facilitate channel opening by STIM1, causing constitutive Ca2+ influx and increasing the currents evoked by Ca2+ store depletion. Mutation V107M additionally decreases the channel selectivity for Ca2+ ions and its inhibition by acidic pH, while mutation T184M does not alter the channel sensitivity to pH or to reactive oxygen species. The ORAI blocker GSK-7975A prevents the constitutive activity of TAM-associated channels and might be used in therapy for patients suffering from TAM. ABSTRACT Skeletal muscle differentiation relies on store-operated Ca2+ entry (SOCE) mediated by STIM proteins linking the depletion of endoplasmic/sarcoplasmic reticulum Ca2+ stores to the activation of membrane Ca2+ -permeable ORAI channels. Gain-of-function mutations in STIM1 or ORAI1 isoforms cause tubular aggregate myopathy (TAM), a skeletal muscle disorder with muscular pain, weakness and cramping. Here, we characterize two overactive ORAI1 mutants from patients with TAM: V107M and T184M, located in the first and third transmembrane domain of the channel. When ectopically expressed in HEK-293T cells or human primary myoblasts, the mutated channels increased basal and store-operated Ca2+ entry. The constitutive activity of V107M, L138F, T184M and P245L mutants was prevented by low concentrations of GSK-7975A while the G98S mutant was resistant to inhibition. Electrophysiological recordings confirmed ORAI1-V107M constitutive activity and revealed larger STIM1-gated V107M- and T184M-mediated currents with conserved fast and slow Ca2+ -dependent inactivation. Mutation V107M altered the channel selectivity for Ca2+ ions and conferred resistance to acidic inhibition. Ca2+ imaging and molecular dynamics simulations showed a preserved sensitivity of T184M to the negative regulation by reactive oxygen species. Both mutants were able to mediate SOCE in Stim1-/- /Stim2-/- mouse embryonic fibroblasts expressing the binding-deficient STIM1-F394H mutant, indicating a higher sensitivity for STIM1-mediated gating, with ORAI1-T184M gain-of-function being strictly dependent on STIM1. These findings provide new insights into the permeation and regulatory properties of ORAI1 mutants that might translate into therapies against diseases with gain-of-function mutations in ORAI1.
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Affiliation(s)
- M Bulla
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - G Gyimesi
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
| | - J H Kim
- Departments of Physiology and Global Medical Science, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea.,Mitohormesis Research Center, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - R Bhardwaj
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
| | - M A Hediger
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
| | - M Frieden
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - N Demaurex
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
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