1
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Collins BC, Shapiro JB, Scheib MM, Musci RV, Verma M, Kardon G. Three-dimensional imaging studies in mice identify cellular dynamics of skeletal muscle regeneration. Dev Cell 2024; 59:1457-1474.e5. [PMID: 38569550 PMCID: PMC11153043 DOI: 10.1016/j.devcel.2024.03.017] [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: 04/25/2023] [Revised: 12/06/2023] [Accepted: 03/08/2024] [Indexed: 04/05/2024]
Abstract
The function of many organs, including skeletal muscle, depends on their three-dimensional structure. Muscle regeneration therefore requires not only reestablishment of myofibers but also restoration of tissue architecture. Resident muscle stem cells (SCs) are essential for regeneration, but how SCs regenerate muscle architecture is largely unknown. We address this problem using genetic labeling of mouse SCs and whole-mount imaging to reconstruct, in three dimensions, muscle regeneration. Unexpectedly, we found that myofibers form via two distinct phases of fusion and the residual basement membrane of necrotic myofibers is critical for promoting fusion and orienting regenerated myofibers. Furthermore, the centralized myonuclei characteristic of regenerated myofibers are associated with myofibrillogenesis and endure months post injury. Finally, we elucidate two cellular mechanisms for the formation of branched myofibers, a pathology characteristic of diseased muscle. We provide a synthesis of the cellular events of regeneration and show that these differ from those used during development.
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Affiliation(s)
- Brittany C Collins
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Jacob B Shapiro
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Mya M Scheib
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Robert V Musci
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Mayank Verma
- Department of Pediatrics, Division of Neurology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Gabrielle Kardon
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA.
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2
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Rodríguez C, Timóteo-Ferreira F, Minchiotti G, Brunelli S, Guardiola O. Cellular interactions and microenvironment dynamics in skeletal muscle regeneration and disease. Front Cell Dev Biol 2024; 12:1385399. [PMID: 38840849 PMCID: PMC11150574 DOI: 10.3389/fcell.2024.1385399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 04/30/2024] [Indexed: 06/07/2024] Open
Abstract
Skeletal muscle regeneration relies on the intricate interplay of various cell populations within the muscle niche-an environment crucial for regulating the behavior of muscle stem cells (MuSCs) and ensuring postnatal tissue maintenance and regeneration. This review delves into the dynamic interactions among key players of this process, including MuSCs, macrophages (MPs), fibro-adipogenic progenitors (FAPs), endothelial cells (ECs), and pericytes (PCs), each assuming pivotal roles in orchestrating homeostasis and regeneration. Dysfunctions in these interactions can lead not only to pathological conditions but also exacerbate muscular dystrophies. The exploration of cellular and molecular crosstalk among these populations in both physiological and dystrophic conditions provides insights into the multifaceted communication networks governing muscle regeneration. Furthermore, this review discusses emerging strategies to modulate the muscle-regenerating niche, presenting a comprehensive overview of current understanding and innovative approaches.
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Affiliation(s)
- Cristina Rodríguez
- Stem Cell Fate Laboratory, Institute of Genetics and Biophysics “A. Buzzati-Traverso”, CNR, Naples, Italy
| | | | - Gabriella Minchiotti
- Stem Cell Fate Laboratory, Institute of Genetics and Biophysics “A. Buzzati-Traverso”, CNR, Naples, Italy
| | - Silvia Brunelli
- School of Medicine and Surgery, University of Milano Bicocca, Milan, Italy
| | - Ombretta Guardiola
- Stem Cell Fate Laboratory, Institute of Genetics and Biophysics “A. Buzzati-Traverso”, CNR, Naples, Italy
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3
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Karthikeyan S, Asakura A. Imaging analysis for muscle stem cells and regeneration. Front Cell Dev Biol 2024; 12:1411401. [PMID: 38774645 PMCID: PMC11106391 DOI: 10.3389/fcell.2024.1411401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 04/15/2024] [Indexed: 05/24/2024] Open
Abstract
Composed of a diverse variety of cells, the skeletal muscle is one of the body's tissues with the remarkable ability to regenerate after injury. One of the key players in the regeneration process is the muscle satellite cell (MuSC), a stem cell population for skeletal muscle, as it is the source of new myofibers. Maintaining MuSC quiescence during homeostasis involves complex interactions between MuSCs and other cells in their corresponding niche in adult skeletal muscle. After the injury, MuSCs are activated to enter the cell cycle for cell proliferation and differentiate into myotubes, followed by mature myofibers to regenerate muscle. Despite decades of research, the exact mechanisms underlying MuSC maintenance and activation remain elusive. Traditional methods of analyzing MuSCs, including cell cultures, animal models, and gene expression analyses, provide some insight into MuSC biology but lack the ability to replicate the 3-dimensional (3-D) in vivo muscle environment and capture dynamic processes comprehensively. Recent advancements in imaging technology, including confocal, intra-vital, and multi-photon microscopies, provide promising avenues for dynamic MuSC morphology and behavior to be observed and characterized. This chapter aims to review 3-D and live-imaging methods that have contributed to uncovering insights into MuSC behavior, morphology changes, interactions within the muscle niche, and internal signaling pathways during the quiescence to activation (Q-A) transition. Integrating advanced imaging modalities and computational tools provides a new avenue for studying complex biological processes in skeletal muscle regeneration and muscle degenerative diseases such as sarcopenia and Duchenne muscular dystrophy (DMD).
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Affiliation(s)
- Smrithi Karthikeyan
- Stem Cell Institute, University of Minnesota Medical School, Minneapolis, MN, United States
- Greg Marzolf Jr. Muscular Dystrophy Center, University of Minnesota Medical School, Minneapolis, MN, United States
- Department of Neurology, University of Minnesota Medical School, Minneapolis, MN, United States
| | - Atsushi Asakura
- Stem Cell Institute, University of Minnesota Medical School, Minneapolis, MN, United States
- Greg Marzolf Jr. Muscular Dystrophy Center, University of Minnesota Medical School, Minneapolis, MN, United States
- Department of Neurology, University of Minnesota Medical School, Minneapolis, MN, United States
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4
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Lessard L, Saugues A, Gondin J, Mounier R, Kneppers A. Measurement of Myonuclear Accretion In Vitro and In Vivo. Methods Mol Biol 2024. [PMID: 38647863 DOI: 10.1007/7651_2024_540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Adult skeletal muscle stem cells (MuSC) are the regenerative precursors of myofibers and also have an important role in myofiber growth, adaptation, and maintenance by fusing to the myofibers-a process referred to as "myonuclear accretion." Due to a focus on MuSC function during regeneration, myofibers remain a largely overlooked component of the MuSC niche influencing MuSC fate. Here, we describe a method to directly measure the rate of myonuclear accretion in vitro and in vivo using ethynyl-2'-deoxyuridine (EdU)-based tracing of MuSC progeny. This method supports the dissection of MuSC intrinsic and myofiber-derived factors influencing myonuclear accretion as an alternative fate of MuSCs supporting myofiber homeostasis and plasticity.
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Affiliation(s)
- Lola Lessard
- Institut NeuroMyoGène, Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, CNRS UMR5261, INSERM U1315, Lyon, France
| | - Audrey Saugues
- Institut NeuroMyoGène, Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, CNRS UMR5261, INSERM U1315, Lyon, France
| | - Julien Gondin
- Institut NeuroMyoGène, Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, CNRS UMR5261, INSERM U1315, Lyon, France
| | - Rémi Mounier
- Institut NeuroMyoGène, Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, CNRS UMR5261, INSERM U1315, Lyon, France
| | - Anita Kneppers
- Institut NeuroMyoGène, Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, CNRS UMR5261, INSERM U1315, Lyon, France.
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5
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Zhang L, Saito H, Higashimoto T, Kaji T, Nakamura A, Iwamori K, Nagano R, Motooka D, Okuzaki D, Uezumi A, Seno S, Fukada SI. Regulation of muscle hypertrophy through granulin: Relayed communication among mesenchymal progenitors, macrophages, and satellite cells. Cell Rep 2024; 43:114052. [PMID: 38573860 DOI: 10.1016/j.celrep.2024.114052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 02/14/2024] [Accepted: 03/19/2024] [Indexed: 04/06/2024] Open
Abstract
Skeletal muscles exert remarkable regenerative or adaptive capacities in response to injuries or mechanical loads. However, the cellular networks underlying muscle adaptation are poorly understood compared to those underlying muscle regeneration. We employed single-cell RNA sequencing to investigate the gene expression patterns and cellular networks activated in overloaded muscles and compared these results with those observed in regenerating muscles. The cellular composition of the 4-day overloaded muscle, when macrophage infiltration peaked, closely resembled that of the 10-day regenerating muscle. In addition to the mesenchymal progenitor-muscle satellite cell (MuSC) axis, interactome analyses or targeted depletion experiments revealed communications between mesenchymal progenitors-macrophages and macrophages-MuSCs. Furthermore, granulin, a macrophage-derived factor, inhibited MuSC differentiation, and Granulin-knockout mice exhibited blunted muscle hypertrophy due to the premature differentiation of overloaded MuSCs. These findings reveal the critical role of granulin through the relayed communications of mesenchymal progenitors, macrophages, and MuSCs in facilitating efficient muscle hypertrophy.
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Affiliation(s)
- Lidan Zhang
- Center for Medical Epigenetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing 40016, China; Laboratory of Stem Cell Regeneration and Adaptation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hayato Saito
- Laboratory of Stem Cell Regeneration and Adaptation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tatsuyoshi Higashimoto
- Laboratory of Stem Cell Regeneration and Adaptation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Takayuki Kaji
- Laboratory of Stem Cell Regeneration and Adaptation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Ayasa Nakamura
- Laboratory of Stem Cell Regeneration and Adaptation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Kanako Iwamori
- Laboratory of Stem Cell Regeneration and Adaptation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Ryoko Nagano
- Laboratory of Stem Cell Regeneration and Adaptation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan; Laboratory of Oral Pathology, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi, Fukuoka 812-8582, Japan
| | - Daisuke Motooka
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Akiyoshi Uezumi
- Division of Cell Heterogeneity, Medical Research Center for High Depth Omics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi, Fukuoka 812-8582, Japan
| | - Shigeto Seno
- Department of Bioinformatic Engineering, Graduate School of Information Science and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - So-Ichiro Fukada
- Laboratory of Stem Cell Regeneration and Adaptation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
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6
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Hung M, Lo HF, Beckmann AG, Demircioglu D, Damle G, Hasson D, Radice GL, Krauss RS. Cadherin-dependent adhesion is required for muscle stem cell niche anchorage and maintenance. Development 2024; 151:dev202387. [PMID: 38456551 PMCID: PMC11057819 DOI: 10.1242/dev.202387] [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: 09/29/2023] [Accepted: 02/25/2024] [Indexed: 03/09/2024]
Abstract
Adhesion between stem cells and their niche provides stable anchorage and signaling cues to sustain properties such as quiescence. Skeletal muscle stem cells (MuSCs) adhere to an adjacent myofiber via cadherin-catenin complexes. Previous studies on N- and M-cadherin in MuSCs revealed that although N-cadherin is required for quiescence, they are collectively dispensable for MuSC niche localization and regenerative activity. Although additional cadherins are expressed at low levels, these findings raise the possibility that cadherins are unnecessary for MuSC anchorage to the niche. To address this question, we conditionally removed from MuSCs β- and γ-catenin, and, separately, αE- and αT-catenin, factors that are essential for cadherin-dependent adhesion. Catenin-deficient MuSCs break quiescence similarly to N-/M-cadherin-deficient MuSCs, but exit the niche and are depleted. Combined in vivo, ex vivo and single cell RNA-sequencing approaches reveal that MuSC attrition occurs via precocious differentiation, re-entry to the niche and fusion to myofibers. These findings indicate that cadherin-catenin-dependent adhesion is required for anchorage of MuSCs to their niche and for preservation of the stem cell compartment. Furthermore, separable cadherin-regulated functions govern niche localization, quiescence and MuSC maintenance.
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Affiliation(s)
- Margaret Hung
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Hsiao-Fan Lo
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Aviva G. Beckmann
- Pathos AI, 600 West Chicago Avenue, Suite 510, Chicago, IL 60654, USA
| | - Deniz Demircioglu
- Bioinformatics for Next Generation Sequencing Core, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Gargi Damle
- Bioinformatics for Next Generation Sequencing Core, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Dan Hasson
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Bioinformatics for Next Generation Sequencing Core, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Glenn L. Radice
- Cardiovascular Research Center, Department of Medicine, Division of Cardiology, Alpert Medical School of Brown University, Providence, RI 02903, USA
| | - Robert S. Krauss
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Bioinformatics for Next Generation Sequencing Core, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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7
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Guo Q, Luo Q, Song G. Control of muscle satellite cell function by specific exercise-induced cytokines and their applications in muscle maintenance. J Cachexia Sarcopenia Muscle 2024; 15:466-476. [PMID: 38375571 PMCID: PMC10995279 DOI: 10.1002/jcsm.13440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 01/05/2024] [Accepted: 01/14/2024] [Indexed: 02/21/2024] Open
Abstract
Exercise is recognized to play an observable role in improving human health, especially in promoting muscle hypertrophy and intervening in muscle mass loss-related diseases, including sarcopenia. Recent rapid advances have demonstrated that exercise induces the release of abundant cytokines from several tissues (e.g., liver, muscle, and adipose tissue), and multiple cytokines improve the functions or expand the numbers of adult stem cells, providing candidate cytokines for alleviating a wide range of diseases. Muscle satellite cells (SCs) are a population of muscle stem cells that are mitotically quiescent but exit from the dormancy state to become activated in response to physical stimuli, after which SCs undergo asymmetric divisions to generate new SCs (stem cell pool maintenance) and commit to later differentiation into myocytes (skeletal muscle replenishment). SCs are essential for the postnatal growth, maintenance, and regeneration of skeletal muscle. Emerging evidence reveals that exercise regulates muscle function largely via the exercise-induced cytokines that govern SC potential, but this phenomenon is complicated and confusing. This review provides a comprehensive integrative overview of the identified exercise-induced cytokines and the roles of these cytokines in SC function, providing a more complete picture regarding the mechanism of SC homeostasis and rejuvenation therapies for skeletal muscle.
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Affiliation(s)
- Qian Guo
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of BioengineeringChongqing UniversityChongqingChina
| | - Qing Luo
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of BioengineeringChongqing UniversityChongqingChina
| | - Guanbin Song
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of BioengineeringChongqing UniversityChongqingChina
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8
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Korb A, Tajbakhsh S, Comai GE. Functional specialisation and coordination of myonuclei. Biol Rev Camb Philos Soc 2024. [PMID: 38477382 DOI: 10.1111/brv.13063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 03/14/2024]
Abstract
Myofibres serve as the functional unit for locomotion, with the sarcomere as fundamental subunit. Running the entire length of this structure are hundreds of myonuclei, located at the periphery of the myofibre, juxtaposed to the plasma membrane. Myonuclear specialisation and clustering at the centre and ends of the fibre are known to be essential for muscle contraction, yet the molecular basis of this regionalisation has remained unclear. While the 'myonuclear domain hypothesis' helped explain how myonuclei can independently govern large cytoplasmic territories, novel technologies have provided granularity on the diverse transcriptional programs running simultaneously within the syncytia and added a new perspective on how myonuclei communicate. Building upon this, we explore the critical cellular and molecular sources of transcriptional and functional heterogeneity within myofibres, discussing the impact of intrinsic and extrinsic factors on myonuclear programs. This knowledge provides new insights for understanding muscle development, repair, and disease, but also opens avenues for the development of novel and precise therapeutic approaches.
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Affiliation(s)
- Amaury Korb
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, 25 rue du Dr. Roux, Institut Pasteur, Paris, F-75015, France
| | - Shahragim Tajbakhsh
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, 25 rue du Dr. Roux, Institut Pasteur, Paris, F-75015, France
| | - Glenda E Comai
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, 25 rue du Dr. Roux, Institut Pasteur, Paris, F-75015, France
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9
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Hung M, Lo HF, Jones GEL, Krauss RS. The muscle stem cell niche at a glance. J Cell Sci 2023; 136:jcs261200. [PMID: 38149870 PMCID: PMC10785660 DOI: 10.1242/jcs.261200] [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] [Indexed: 12/28/2023] Open
Abstract
Skeletal muscle stem cells (MuSCs, also called satellite cells) are the source of the robust regenerative capability of this tissue. The hallmark property of MuSCs at homeostasis is quiescence, a reversible state of cell cycle arrest required for long-term preservation of the stem cell population. MuSCs reside between an individual myofiber and an enwrapping basal lamina, defining the immediate MuSC niche. Additional cell types outside the basal lamina, in the interstitial space, also contribute to niche function. Quiescence is actively maintained by multiple niche-derived signals, including adhesion molecules presented from the myofiber surface and basal lamina, as well as soluble signaling factors produced by myofibers and interstitial cell types. In this Cell Science at a Glance article and accompanying poster, we present the most recent information on how niche signals promote MuSC quiescence and provide perspectives for further research.
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Affiliation(s)
- Margaret Hung
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Hsiao-Fan Lo
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Grace E. L. Jones
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Robert S. Krauss
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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10
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Burke BI, Goh J, Albathi FA, Valentino TR, Nolt GL, Joshi JK, Dungan CM, Johnson LA, Wen Y, Ismaeel A, McCarthy JJ. ApoE isoform does not influence skeletal muscle regeneration in adult mice. Front Physiol 2023; 14:1302695. [PMID: 38074327 PMCID: PMC10702509 DOI: 10.3389/fphys.2023.1302695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/10/2023] [Indexed: 02/12/2024] Open
Abstract
Introduction: Apolipoprotein E (ApoE) has been shown to be necessary for proper skeletal muscle regeneration. Consistent with this finding, single-cell RNA-sequencing analyses of skeletal muscle stem cells (MuSCs) revealed that Apoe is a top marker of quiescent MuSCs that is downregulated upon activation. The purpose of this study was to determine if muscle regeneration is altered in mice which harbor one of the three common human ApoE isoforms, referred to as ApoE2, E3 and E4. Methods: Histomorphometric analyses were employed to assess muscle regeneration in ApoE2, E3, and E4 mice after 14 days of recovery from barium chloride-induced muscle damage in vivo, and primary MuSCs were isolated to assess proliferation and differentiation of ApoE2, E3, and E4 MuSCs in vitro. Results: There was no difference in the basal skeletal muscle phenotype of ApoE isoforms as evaluated by section area, myofiber cross-sectional area (CSA), and myonuclear and MuSC abundance per fiber. Although there were no differences in fiber-type frequency in the soleus, Type IIa relative frequency was significantly lower in plantaris muscles of ApoE4 mice compared to ApoE3. Moreover, ApoE isoform did not influence muscle regeneration as assessed by fiber frequency, fiber CSA, and myonuclear and MuSC abundance. Finally, there were no differences in the proliferative capacity or myogenic differentiation potential of MuSCs between any ApoE isoform. Discussion: Collectively, these data indicate nominal effects of ApoE isoform on the ability of skeletal muscle to regenerate following injury or the in vitro MuSC phenotype.
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Affiliation(s)
- Benjamin I. Burke
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, United States
- Center for Muscle Biology, University of Kentucky, Lexington, KY, United States
| | - Jensen Goh
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, United States
- Center for Muscle Biology, University of Kentucky, Lexington, KY, United States
| | - Fatmah A. Albathi
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, United States
- Center for Muscle Biology, University of Kentucky, Lexington, KY, United States
| | | | - Georgia L. Nolt
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, United States
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States
| | - Jai K. Joshi
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, United States
- Center for Muscle Biology, University of Kentucky, Lexington, KY, United States
| | - Cory M. Dungan
- Department of Health, Human Performance, and Recreation, Robbins College of Health and Human Sciences, Baylor University, Waco, TX, United States
| | - Lance A. Johnson
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, United States
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States
| | - Yuan Wen
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, United States
- Center for Muscle Biology, University of Kentucky, Lexington, KY, United States
- Division of Biomedical Informatics, Department of Internal Medicine, College of Medicine, University of Kentucky, Lexington, KY, United States
| | - Ahmed Ismaeel
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, United States
- Center for Muscle Biology, University of Kentucky, Lexington, KY, United States
| | - John J. McCarthy
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, United States
- Center for Muscle Biology, University of Kentucky, Lexington, KY, United States
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11
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Hicks MR, Liu X, Young CS, Saleh K, Ji Y, Jiang J, Emami MR, Mokhonova E, Spencer MJ, Meng H, Pyle AD. Nanoparticles systemically biodistribute to regenerating skeletal muscle in DMD. J Nanobiotechnology 2023; 21:303. [PMID: 37641124 PMCID: PMC10463982 DOI: 10.1186/s12951-023-01994-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 07/09/2023] [Indexed: 08/31/2023] Open
Abstract
Skeletal muscle disease severity can often progress asymmetrically across muscle groups and heterogeneously within tissues. An example is Duchenne Muscular Dystrophy (DMD) in which lack of dystrophin results in devastating skeletal muscle wasting in some muscles whereas others are spared or undergo hypertrophy. An efficient, non-invasive approach to identify sites of asymmetry and degenerative lesions could enable better patient monitoring and therapeutic targeting of disease. In this study, we utilized a versatile intravenously injectable mesoporous silica nanoparticle (MSNP) based nanocarrier system to explore mechanisms of biodistribution in skeletal muscle of mdx mouse models of DMD including wildtype, dystrophic, and severely dystrophic mice. Moreover, MSNPs could be imaged in live mice and whole muscle tissues enabling investigation of how biodistribution is altered by different types of muscle pathology such as inflammation or fibrosis. We found MSNPs were tenfold more likely to aggregate within select mdx muscles relative to wild type, such as gastrocnemius and quadriceps. This was accompanied by decreased biodistribution in off-target organs. We found the greatest factor affecting preferential delivery was the regenerative state of the dystrophic skeletal muscle with the highest MSNP abundance coinciding with the regions showing the highest level of embryonic myosin staining and intramuscular macrophage uptake. To demonstrate, muscle regeneration regulated MSNP distribution, we experimentally induced regeneration using barium chloride which resulted in a threefold increase of intravenously injected MSNPs to sites of regeneration 7 days after injury. These discoveries provide the first evidence that nanoparticles have selective biodistribution to skeletal muscle in DMD to areas of active regeneration and that nanoparticles could enable diagnostic and selective drug delivery in DMD skeletal muscle.
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Affiliation(s)
- Michael R Hicks
- Department of Microbiology, Immunology and Medical Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- Eli and Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, Los Angeles, CA, USA
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
| | - Xiangsheng Liu
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- California Nanosystems Institute at UCLA, Los Angeles, CA, USA
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, Zhejiang, China
| | - Courtney S Young
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- MyoGene Bio, San Diego, CA, USA
| | - Kholoud Saleh
- Department of Microbiology, Immunology and Medical Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Ying Ji
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Jinhong Jiang
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- California Nanosystems Institute at UCLA, Los Angeles, CA, USA
- Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, 310022, Zhejiang, China
| | - Michael R Emami
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Ekaterina Mokhonova
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Melissa J Spencer
- Eli and Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, Los Angeles, CA, USA.
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
| | - Huan Meng
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
- California Nanosystems Institute at UCLA, Los Angeles, CA, USA.
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, China.
| | - April D Pyle
- Department of Microbiology, Immunology and Medical Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
- Eli and Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, Los Angeles, CA, USA.
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12
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Duran P, Sesillo FB, Cook M, Burnett L, Menefee SA, Do E, French S, Zazueta-Damian G, Dzieciatkowska M, Saviola AJ, Shah MM, Sanvictores C, Osborn KG, Hansen KC, Shtrahman M, Christman KL, Alperin M. Proregenerative extracellular matrix hydrogel mitigates pathological alterations of pelvic skeletal muscles after birth injury. Sci Transl Med 2023; 15:eabj3138. [PMID: 37531414 PMCID: PMC10460616 DOI: 10.1126/scitranslmed.abj3138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/14/2023] [Indexed: 08/04/2023]
Abstract
Pelvic floor disorders, including pelvic organ prolapse and urinary and fecal incontinence, affect millions of women globally and represent a major public health concern. Pelvic floor muscle (PFM) dysfunction has been identified as one of the leading risk factors for the development of these morbid conditions. Childbirth, specifically vaginal delivery, has been recognized as the most important potentially modifiable risk factor for PFM injury; however, the precise mechanisms of PFM dysfunction after parturition remain elusive. In this study, we demonstrated that PFMs exhibit atrophy and fibrosis in parous women with symptomatic pelvic organ prolapse. These pathological alterations were recapitulated in a preclinical rat model of simulated birth injury (SBI). The transcriptional signature of PFMs after injury demonstrated an impairment in muscle anabolism, persistent expression of genes that promote extracellular matrix (ECM) deposition, and a sustained inflammatory response. We also evaluated the administration of acellular injectable skeletal muscle ECM hydrogel for the prevention of these pathological alterations. Treatment of PFMs with the ECM hydrogel either at the time of birth injury or 4 weeks after injury mitigated PFM atrophy and fibrosis. By evaluating gene expression, we demonstrated that these changes are mainly driven by the hydrogel-induced enhancement of endogenous myogenesis, ECM remodeling, and modulation of the immune response. This work furthers our understanding of PFM birth injury and demonstrates proof of concept for future investigations of proregenerative biomaterial approaches for the treatment of injured pelvic soft tissues.
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Affiliation(s)
- Pamela Duran
- Shu Chien-Gene Lay Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
- Sanford Consortium for Regenerative Medicine, University of California San Diego, La Jolla, CA 92037, USA
| | - Francesca Boscolo Sesillo
- Sanford Consortium for Regenerative Medicine, University of California San Diego, La Jolla, CA 92037, USA
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Division of Female Pelvic Medicine and Reconstructive Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Mark Cook
- Department of Integrative, Biology and Physiology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Lindsey Burnett
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Division of Female Pelvic Medicine and Reconstructive Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Shawn A. Menefee
- Department of Obstetrics and Gynecology, Division of Female Pelvic Medicine and Reconstructive Surgery, Kaiser Permanente, San Diego, CA 92110, USA
| | - Emmy Do
- Department of Biology, University of California San Diego, La Jolla, CA 92093, USA
| | - Saya French
- Department of Biology, University of California San Diego, La Jolla, CA 92093, USA
| | - Gisselle Zazueta-Damian
- Department of Obstetrics and Gynecology, Division of Female Pelvic Medicine and Reconstructive Surgery, Kaiser Permanente, San Diego, CA 92110, USA
| | - Monika Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Anthony J. Saviola
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Manali M. Shah
- Shu Chien-Gene Lay Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Clyde Sanvictores
- Department of Physics, University of California San Diego, La Jolla, CA 92093, USA
| | - Kent G. Osborn
- Center for Veterinary Sciences and Comparative Medicine, Division of Comparative Pathology and Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Kirk C. Hansen
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Matthew Shtrahman
- Sanford Consortium for Regenerative Medicine, University of California San Diego, La Jolla, CA 92037, USA
- Department of Neurosciences, University of California San Diego, La Jolla, CA 92093, USA
| | - Karen L. Christman
- Shu Chien-Gene Lay Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
- Sanford Consortium for Regenerative Medicine, University of California San Diego, La Jolla, CA 92037, USA
| | - Marianna Alperin
- Sanford Consortium for Regenerative Medicine, University of California San Diego, La Jolla, CA 92037, USA
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Division of Female Pelvic Medicine and Reconstructive Surgery, University of California San Diego, La Jolla, CA 92093, USA
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13
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Nicoletti C, Wei X, Etxaniz U, D’Ercole C, Madaro L, Perera R, Puri PL. Muscle denervation promotes functional interactions between glial and mesenchymal cells through NGFR and NGF. iScience 2023; 26:107114. [PMID: 37416457 PMCID: PMC10319848 DOI: 10.1016/j.isci.2023.107114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/28/2023] [Accepted: 06/09/2023] [Indexed: 07/08/2023] Open
Abstract
We performed scRNA-seq/snATAC-seq of skeletal muscles post sciatic nerve transection to delineate cell type-specific patterns of gene expression/chromatin accessibility at different time points post-denervation. Unlike myotrauma, denervation selectively activates glial cells and Thy1/CD90-expressing mesenchymal cells. Glial cells expressed Ngf receptor (Ngfr) and were located near neuromuscular junctions (NMJs), close to Thy1/CD90-expressing cells, which provided the main cellular source of NGF post-denervation. Functional communication between these cells was mediated by NGF/NGFR, as either recombinant NGF or co-culture with Thy1/CD90-expressing cells could increase glial cell number ex vivo. Pseudo-time analysis in glial cells revealed an initial bifurcation into processes related to either cellular de-differentiation/commitment to specialized cell types (e.g., Schwann cells), or failure to promote nerve regeneration, leading to extracellular matrix remodeling toward fibrosis. Thus, interactions between denervation-activated Thy1/CD90-expressing and glial cells represent an early abortive process toward NMJs repair, ensued by the conversion of denervated muscles into an environment hostile for NMJ repair.
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Affiliation(s)
- Chiara Nicoletti
- Development, Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Xiuqing Wei
- Development, Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Usue Etxaniz
- Development, Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Chiara D’Ercole
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, 00161 Rome, Italy
- Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Luca Madaro
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, 00161 Rome, Italy
- Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Ranjan Perera
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, School of Medicine, Johns Hopkins University, 1650 Orleans Street, Baltimore, MD 21231, USA
| | - Pier Lorenzo Puri
- Development, Aging and Regeneration Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
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14
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Kurland JV, Cutler AA, Stanley JT, Betta ND, Van Deusen A, Pawlikowski B, Hall M, Antwine T, Russell A, Allen MA, Dowell R, Olwin B. Aging disrupts gene expression timing during muscle regeneration. Stem Cell Reports 2023; 18:1325-1339. [PMID: 37315524 DOI: 10.1016/j.stemcr.2023.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 06/16/2023] Open
Abstract
Skeletal muscle function and regenerative capacity decline during aging, yet factors driving these changes are incompletely understood. Muscle regeneration requires temporally coordinated transcriptional programs to drive myogenic stem cells to activate, proliferate, fuse to form myofibers, and to mature as myonuclei, restoring muscle function after injury. We assessed global changes in myogenic transcription programs distinguishing muscle regeneration in aged mice from young mice by comparing pseudotime trajectories from single-nucleus RNA sequencing of myogenic nuclei. Aging-specific differences in coordinating myogenic transcription programs necessary for restoring muscle function occur following muscle injury, likely contributing to compromised regeneration in aged mice. Differences in pseudotime alignment of myogenic nuclei when comparing aged with young mice via dynamic time warping revealed pseudotemporal differences becoming progressively more severe as regeneration proceeds. Disruptions in timing of myogenic gene expression programs may contribute to incomplete skeletal muscle regeneration and declines in muscle function as organisms age.
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Affiliation(s)
- Jesse V Kurland
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - Alicia A Cutler
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - Jacob T Stanley
- BioFrontiers Institute, University of Colorado, Boulder, 3415 Colorado Avenue, Boulder, CO 80303, USA
| | - Nicole Dalla Betta
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - Ashleigh Van Deusen
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA; Edgewise Therapeutics, 3415 Colorado Avenue, Boulder, CO 80303, USA
| | - Brad Pawlikowski
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA; Department of Pediatrics Section of Section of Hematology, Oncology, Bone Marrow Transplant, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Monica Hall
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA; Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT 59718, USA
| | - Tiffany Antwine
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - Alan Russell
- Edgewise Therapeutics, 3415 Colorado Avenue, Boulder, CO 80303, USA
| | - Mary Ann Allen
- BioFrontiers Institute, University of Colorado, Boulder, 3415 Colorado Avenue, Boulder, CO 80303, USA
| | - Robin Dowell
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA; BioFrontiers Institute, University of Colorado, Boulder, 3415 Colorado Avenue, Boulder, CO 80303, USA.
| | - Bradley Olwin
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA.
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15
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Walter LD, Orton JL, Hannah Fong EH, Maymi VI, Rudd BD, Elisseeff JH, Cosgrove BD. Single-cell transcriptomic analysis of skeletal muscle regeneration across mouse lifespan identifies altered stem cell states associated with senescence. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.25.542370. [PMID: 37292698 PMCID: PMC10245980 DOI: 10.1101/2023.05.25.542370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Skeletal muscle regeneration is driven by the interaction of myogenic and non-myogenic cells. In aging, regeneration is impaired due to dysfunctions of myogenic and non-myogenic cells, but this is not understood comprehensively. We collected an integrated atlas of 273,923 single-cell transcriptomes from muscles of young, old, and geriatric mice (~5, 20, 26 months-old) at six time-points following myotoxin injury. We identified eight cell types, including T and NK cells and macrophage subtypes, that displayed accelerated or delayed response dynamics between ages. Through pseudotime analysis, we observed myogenic cell states and trajectories specific to old and geriatric ages. To explain these age differences, we assessed cellular senescence by scoring experimentally derived and curated gene-lists. This pointed to an elevation of senescent-like subsets specifically within the self-renewing muscle stem cells in aged muscles. This resource provides a holistic portrait of the altered cellular states underlying skeletal muscle regenerative decline across mouse lifespan.
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Affiliation(s)
- Lauren D. Walter
- Genetics, Genomics and Development Graduate Program, Cornell University, Ithaca, NY, USA
| | - Jessica L. Orton
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | | | - Viviana I. Maymi
- Department of Microbiology & Immunology, Cornell University, Ithaca, NY, USA
| | - Brian D. Rudd
- Genetics, Genomics and Development Graduate Program, Cornell University, Ithaca, NY, USA
- Department of Microbiology & Immunology, Cornell University, Ithaca, NY, USA
| | - Jennifer H. Elisseeff
- Translational Tissue Engineering Center, Wilmer Eye Institute, and Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Benjamin D. Cosgrove
- Genetics, Genomics and Development Graduate Program, Cornell University, Ithaca, NY, USA
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
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16
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Hindi SM, Petrany MJ, Greenfeld E, Focke LC, Cramer AAW, Whitt MA, Khairallah RJ, Ward CW, Chamberlain JS, Podbilewicz B, Prasad V, Millay DP. Enveloped viruses pseudotyped with mammalian myogenic cell fusogens target skeletal muscle for gene delivery. Cell 2023; 186:2062-2077.e17. [PMID: 37075755 DOI: 10.1016/j.cell.2023.03.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 02/08/2023] [Accepted: 03/28/2023] [Indexed: 04/21/2023]
Abstract
Entry of enveloped viruses into cells is mediated by viral fusogenic proteins that drive membrane rearrangements needed for fusion between viral and target membranes. Skeletal muscle development also requires membrane fusion events between progenitor cells to form multinucleated myofibers. Myomaker and Myomerger are muscle-specific cell fusogens but do not structurally or functionally resemble classical viral fusogens. We asked whether the muscle fusogens could functionally substitute for viral fusogens, despite their structural distinctiveness, and fuse viruses to cells. We report that engineering of Myomaker and Myomerger on the membrane of enveloped viruses leads to specific transduction of skeletal muscle. We also demonstrate that locally and systemically injected virions pseudotyped with the muscle fusogens can deliver μDystrophin to skeletal muscle of a mouse model of Duchenne muscular dystrophy and alleviate pathology. Through harnessing the intrinsic properties of myogenic membranes, we establish a platform for delivery of therapeutic material to skeletal muscle.
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Affiliation(s)
- Sajedah M Hindi
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Michael J Petrany
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Elena Greenfeld
- Department of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Leah C Focke
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Alyssa A W Cramer
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Michael A Whitt
- Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, USA
| | | | - Christopher W Ward
- Department of Orthopedics and Center for Biomedical Engineering and Technology (BioMET), University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jeffrey S Chamberlain
- Departments of Neurology, Medicine and Biochemistry, Wellstone Muscular Dystrophy Specialized Research Center, University of Washington School of Medicine, Seattle, WA, USA
| | | | - Vikram Prasad
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Douglas P Millay
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
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17
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Feng X, Wang AH, Juan AH, Ko KD, Jiang K, Riparini G, Ciuffoli V, Kaba A, Lopez C, Naz F, Jarnik M, Aliberti E, Hu S, Segalés J, Khateb M, Acevedo-Luna N, Randazzo D, Cheung TH, Muñoz-Cánoves P, Dell'Orso S, Sartorelli V. Polycomb Ezh1 maintains murine muscle stem cell quiescence through non-canonical regulation of Notch signaling. Dev Cell 2023:S1534-5807(23)00158-2. [PMID: 37105173 DOI: 10.1016/j.devcel.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/08/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023]
Abstract
Organismal homeostasis and regeneration are predicated on committed stem cells that can reside for long periods in a mitotically dormant but reversible cell-cycle arrest state defined as quiescence. Premature escape from quiescence is detrimental, as it results in stem cell depletion, with consequent defective tissue homeostasis and regeneration. Here, we report that Polycomb Ezh1 confers quiescence to murine muscle stem cells (MuSCs) through a non-canonical function. In the absence of Ezh1, MuSCs spontaneously exit quiescence. Following repeated injuries, the MuSC pool is progressively depleted, resulting in failure to sustain proper muscle regeneration. Rather than regulating repressive histone H3K27 methylation, Ezh1 maintains gene expression of the Notch signaling pathway in MuSCs. Selective genetic reconstitution of the Notch signaling corrects stem cell number and re-establishes quiescence of Ezh1-/- MuSCs.
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Affiliation(s)
- Xuesong Feng
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - A Hongjun Wang
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - Aster H Juan
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - Kyung Dae Ko
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - Kan Jiang
- Biodata Mining & Discovery Section, NIAMS, NIH, Bethesda, MD, USA
| | - Giulia Riparini
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - Veronica Ciuffoli
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - Aissah Kaba
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - Christopher Lopez
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - Faiza Naz
- Genomic Technology Section, NIAMS, NIH, Bethesda, MD, USA
| | - Michal Jarnik
- Cell Biology and Neurobiology Branch, NICHD, NIH, Bethesda, MD, USA
| | - Elizabeth Aliberti
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - Shenyuan Hu
- Division of Life Sciences, State Key Laboratory of Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Jessica Segalés
- Department of Medicine and Life Sciences (MELIS), Pompeu Fabra University (UPF), Barcelona, Spain
| | - Mamduh Khateb
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | - Natalia Acevedo-Luna
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA
| | | | - Tom H Cheung
- Division of Life Sciences, State Key Laboratory of Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Pura Muñoz-Cánoves
- Department of Medicine and Life Sciences (MELIS), Pompeu Fabra University (UPF), Barcelona, Spain; Altos Labs Inc, San Diego, CA, USA
| | | | - Vittorio Sartorelli
- Laboratory of Muscle Stem Cells & Gene Regulation, NIAMS, NIH, Bethesda, MD, USA.
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18
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Krauss RS, Kann AP. Muscle stem cells get a new look: Dynamic cellular projections as sensors of the stem cell niche. Bioessays 2023; 45:e2200249. [PMID: 36916774 PMCID: PMC10170654 DOI: 10.1002/bies.202200249] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/16/2023] [Accepted: 02/20/2023] [Indexed: 03/15/2023]
Abstract
Cellular mechanisms whereby quiescent stem cells sense tissue injury and transition to an activated state are largely unknown. Quiescent skeletal muscle stem cells (MuSCs, also called satellite cells) have elaborate, heterogeneous projections that rapidly retract in response to muscle injury. They may therefore act as direct sensors of their niche environment. Retraction is driven by a Rac-to-Rho GTPase activity switch that promotes downstream MuSC activation events. These and other observations lead to several hypotheses: (1) projections are morphologically dynamic at quiescence, providing a surveillance function for muscle damage; (2) quiescent projection dynamics are regulated by the relative balance of Rac and Rho activities promoted by niche-derived cues; (3) projections, particularly their associated filopodia, sense tissue damage via changes to the biomechanical properties of the niche and/or detection of signaling cues released by damaged myofibers; and (4) the dynamic nature of projections result in a population of MuSCs with heterogeneous functional properties. These concepts may extend to other types of quiescent stem cells, as well as prove useful in translational research settings.
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Affiliation(s)
- Robert S Krauss
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Allison P Kann
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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19
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Jacobsen NL, Morton AB, Segal SS. Angiogenesis precedes myogenesis during regeneration following biopsy injury of skeletal muscle. Skelet Muscle 2023; 13:3. [PMID: 36788624 PMCID: PMC9926536 DOI: 10.1186/s13395-023-00313-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 02/01/2023] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Acute injury to skeletal muscle damages myofibers and fragment capillaries, impairing contractile function and local perfusion. Myofibers and microvessels regenerate from satellite cells and from surviving microvessel fragments, respectively, to restore intact muscle. Established models of injury have used myotoxins and physical trauma to demonstrate the concurrence of myogenesis and angiogenesis during regeneration. In these models, efferocytosis removes cellular debris while basal laminae persist to provide guidance during myofiber and microvessel regeneration. It is unknown whether the spatiotemporal coupling between myofiber and microvascular regeneration persists when muscle tissue is completely removed and local guidance cues are lost. METHODS To test whether complete removal of skeletal muscle tissue affects the spatiotemporal relationship between myogenesis and angiogenesis during regeneration, subthreshold volumetric muscle loss was created with a biopsy punch (diameter, 2 mm) through the center of the gluteus maximus (GM) in adult mice. Regeneration into the void was evaluated through 21 days post-injury (dpi). Microvascular perfusion was evaluated in vivo by injecting fluorescent dextran into the circulation during intravital imaging. Confocal imaging and histological analyses of whole-mount GM preparations and tissue cross-sections assessed the growth of microvessels and myofibers into the wound. RESULTS A provisional matrix filled with PDGFRα+ and CD45+ cells spanned the wound within 1 dpi. Regenerating microvessels advanced from the edges of the wound into the matrix by 7 dpi. Nascent microvascular networks formed by 10 dpi with blood-perfused networks spanning the wound by 14 dpi. In striking contrast, the wound remained devoid of myofibers at 7 and 10 dpi. Myogenesis into the wound was apparent by 14 dpi and traversed the wound by 21 dpi. Regenerated myofibers and microvessels were disorganized compared to the uninjured muscle. CONCLUSIONS Following punch biopsy of adult skeletal muscle, regenerating microvessels span the wound and become perfused with blood prior to myofiber regeneration. The loss of residual guidance cues with complete tissue removal disrupts the spatiotemporal correspondence between microvascular and myofiber regeneration. We conclude that angiogenesis precedes myogenesis during regeneration following subthreshold volumetric muscle loss.
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Affiliation(s)
- Nicole L Jacobsen
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, USA
| | - Aaron B Morton
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, USA
| | - Steven S Segal
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, USA. .,Dalton Cardiovascular Research Center, Columbia, MO, USA. .,Department of Biomedical Sciences, University of Missouri, Columbia, MO, USA. .,Department of Biomedical, Biological, and Chemical Engineering, University of Missouri, Columbia, MO, USA.
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Chen WJ, Lin IH, Lee CW, Yoshioka K, Ono Y, Yan YT, Yen Y, Chen YF. Ribonucleotide reductase M2B in the myofibers modulates stem cell fate in skeletal muscle. NPJ Regen Med 2022; 7:37. [PMID: 35906243 PMCID: PMC9338274 DOI: 10.1038/s41536-022-00231-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 07/06/2022] [Indexed: 11/17/2022] Open
Abstract
The balance among quiescence, differentiation, and self-renewal of skeletal muscle stem cells (MuSCs) is tightly regulated by their intrinsic and extrinsic properties from the niche. How the niche controls MuSC fate remains unclear. Ribonucleotide reductase M2B (Rrm2b) modulates MuSC quiescence/differentiation in muscle in response to injury. Rrm2b knockout in myofibers, but not in MuSCs, led to weakness of muscles, such as a loss of muscle mass and strength. After muscle injury, damaged myofibers were more efficiently repaired in the Rrm2b myofiber-specific knockout mice than the control mice, but these myofibers were thinner and showed weak functioning. Rrm2b-deleted myofibers released several myokines, which trigger MuSCs to differentiate but not re-enter the quiescent stage to replenish the stem cell pool. Overall, Rrm2b in the myofibers plays a critical role in modulating the MuSC fate by modifying the microenvironment, and it may lead to a possible strategy to treat muscle disorders.
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Affiliation(s)
- Wan-Jing Chen
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei, 11529, Taiwan
| | - I-Hsuan Lin
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, 11031, Taipei, Taiwan
| | - Chien-Wei Lee
- Center for Translational Genomics Research, China Medical University Hospital, Taichung, 404327, Taiwan
| | - Kiyoshi Yoshioka
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Yusuke Ono
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Yu-Ting Yan
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei, 11529, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Yun Yen
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, 11031, Taipei, Taiwan. .,Ph.D. Program for Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, 11031, Taipei, Taiwan. .,Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, 11031, Taipei, Taiwan. .,Cancer Center, Taipei Municipal WanFang Hospital, 116081, Taipei, Taiwan. .,Center for Cancer Translational Research, Tzu Chi University, Hualien, Taiwan.
| | - Yi-Fan Chen
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei, 11529, Taiwan. .,Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, 11031, Taipei, Taiwan. .,International Ph.D. Program for Translational Science, College of Medical Science and Technology, Taipei Medical University, 11031, Taipei, Taiwan. .,Master Program in Clinical Genomics and Proteomics, School of Pharmacy, Taipei Medical University, Taipei, 11031, Taiwan.
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Jacques E, Kuang Y, Kann AP, Le Grand F, Krauss RS, Gilbert PM. The mini-IDLE 3D biomimetic culture assay enables interrogation of mechanisms governing muscle stem cell quiescence and niche repopulation. eLife 2022; 11:81738. [PMID: 36537758 PMCID: PMC9904761 DOI: 10.7554/elife.81738] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Adult skeletal muscle harbours a population of muscle stem cells (MuSCs) that are required for repair after tissue injury. In youth, MuSCs return to a reversible state of cell-cycle arrest termed 'quiescence' after injury resolution. Conversely, some MuSCs in aged muscle remain semi-activated, causing a premature response to injuries that results in incomplete repair and eventual stem cell depletion. Regulating this balance between MuSC quiescence and activation may hold the key to restoring tissue homeostasis with age, but is incompletely understood. To fill this gap, we developed a simple and tractable in vitro method, to rapidly inactivate MuSCs freshly isolated from young murine skeletal muscle, and return them to a quiescent-like state for at least 1-week, which we name mini-IDLE (Inactivation and Dormancy LEveraged in vitro). This was achieved by introducing MuSCs into a 3D bioartificial niche comprised of a thin sheet of mouse myotubes, which we demonstrate provides the minimal cues necessary to induce quiescence. With different starting numbers of MuSCs, the assay revealed cellular heterogeneity and population-level adaptations that converged on a common niche repopulation density; behaviours previously observed only in vivo. Quiescence-associated hallmarks included a Pax7+CalcR+DDX6+MyoD-c-FOS- signature, quiescent-like morphologies, and polarized niche markers. Leveraging high-content bioimaging pipelines, we demonstrate a relationship between morphology and cell fate signatures for possible real-time morphology-based screening. When using MuSCs from aged muscle, they displayed aberrant proliferative activities and delayed inactivation kinetics, among other quiescence-associated defects that we show are partially rescued by wortmannin treatment. Thus, the assay offers an unprecedented opportunity to systematically investigate long-standing queries in areas such as regulation of pool size and functional heterogeneity within the MuSC population, and to uncover quiescence regulators in youth and age.
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Affiliation(s)
- Erik Jacques
- Institute of Biomedical Engineering, University of TorontoTorontoCanada,Donnelly Centre, University of TorontoTorontoCanada
| | - Yinni Kuang
- Donnelly Centre, University of TorontoTorontoCanada,Department of Cell and Systems Biology, University of TorontoTorontoCanada
| | - Allison P Kann
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount SinaiNew YorkUnited States,Black Family Stem Cell Institute, Icahn School of Medicine at Mount SinaiNew YorkUnited States,Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount SinaiNew YorkUnited States
| | - Fabien Le Grand
- Université Claude Bernard Lyon 1, CNRS UMR 5261, INSERM U1315, Institut NeuroMyoGène - Pathophysiology and Genetics of Neuron and MuscleLyonFrance
| | - Robert S Krauss
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount SinaiNew YorkUnited States,Black Family Stem Cell Institute, Icahn School of Medicine at Mount SinaiNew YorkUnited States,Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount SinaiNew YorkUnited States
| | - Penney M Gilbert
- Institute of Biomedical Engineering, University of TorontoTorontoCanada,Donnelly Centre, University of TorontoTorontoCanada,Department of Cell and Systems Biology, University of TorontoTorontoCanada
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