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Kirchner VA, Badshah JS, Kyun Hong S, Martinez O, Pruett TL, Niedernhofer LJ. Effect of Cellular Senescence in Disease Progression and Transplantation: Immune Cells and Solid Organs. Transplantation 2024; 108:1509-1523. [PMID: 37953486 PMCID: PMC11089077 DOI: 10.1097/tp.0000000000004838] [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] [Indexed: 11/14/2023]
Abstract
Aging of the world population significantly impacts healthcare globally and specifically, the field of transplantation. Together with end-organ dysfunction and prolonged immunosuppression, age increases the frequency of comorbid chronic diseases in transplant candidates and recipients, contributing to inferior outcomes. Although the frequency of death increases with age, limited use of organs from older deceased donors reflects the concerns about organ durability and inadequate function. Cellular senescence (CS) is a hallmark of aging, which occurs in response to a myriad of cellular stressors, leading to activation of signaling cascades that stably arrest cell cycle progression to prevent tumorigenesis. In aging and chronic conditions, senescent cells accumulate as the immune system's ability to clear them wanes, which is causally implicated in the progression of chronic diseases, immune dysfunction, organ damage, decreased regenerative capacity, and aging itself. The intimate interplay between senescent cells, their proinflammatory secretome, and immune cells results in a positive feedback loop, propagating chronic sterile inflammation and the spread of CS. Hence, senescent cells in organs from older donors trigger the recipient's alloimmune response, resulting in the increased risk of graft loss. Eliminating senescent cells or attenuating their inflammatory phenotype is a novel, potential therapeutic target to improve transplant outcomes and expand utilization of organs from older donors. This review focuses on the current knowledge about the impact of CS on circulating immune cells in the context of organ damage and disease progression, discusses the impact of CS on abdominal solid organs that are commonly transplanted, and reviews emerging therapies that target CS.
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Affiliation(s)
- Varvara A. Kirchner
- Division of Abdominal Transplantation, Department of Surgery, Stanford University, Stanford, CA
| | - Joshua S. Badshah
- Division of Abdominal Transplantation, Department of Surgery, Stanford University, Stanford, CA
| | - Suk Kyun Hong
- Division of Abdominal Transplantation, Department of Surgery, Stanford University, Stanford, CA
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Olivia Martinez
- Division of Abdominal Transplantation, Department of Surgery, Stanford University, Stanford, CA
| | - Timothy L. Pruett
- Division of Transplantation, Department of Surgery, University of Minnesota, Minneapolis, MN
| | - Laura J. Niedernhofer
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota Medical School, Minneapolis, MN
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Kepreotis SV, Oh JG, Park M, Yoo J, Lee C, Mercola M, Hajjar RJ, Jeong D. Inhibition of miR-25 ameliorates cardiac and skeletal muscle dysfunction in aged mdx/utrn haploinsufficient (+/-) mice. MOLECULAR THERAPY. NUCLEIC ACIDS 2024; 35:102174. [PMID: 38584818 PMCID: PMC10998245 DOI: 10.1016/j.omtn.2024.102174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 03/14/2024] [Indexed: 04/09/2024]
Abstract
Dystrophic cardiomyopathy is a significant feature of Duchenne muscular dystrophy (DMD). Increased cardiomyocyte cytosolic calcium (Ca2+) and interstitial fibrosis are major pathophysiological hallmarks that ultimately result in cardiac dysfunction. MicroRNA-25 (miR-25) has been identified as a suppressor of both sarcoplasmic reticulum calcium ATPase 2a (SERCA2a) and mothers against decapentaplegic homolog-7 (Smad7) proteins. In this study, we created a gene transfer using an miR-25 tough decoy (TuD) RNA inhibitor delivered via recombinant adeno-associated virus serotype 9 (AAV9) to evaluate the effect of miR-25 inhibition on cardiac and skeletal muscle function in aged dystrophin/utrophin haploinsufficient mice mdx/utrn (+/-), a validated transgenic murine model of DMD. We found that the intravenous delivery of AAV9 miR-25 TuD resulted in strong and stable inhibition of cardiac miR-25 levels, together with the restoration of SERCA2a and Smad7 expression. This was associated with the amelioration of cardiomyocyte interstitial fibrosis as well as recovered cardiac function. Furthermore, the direct quadricep intramuscular injection of AAV9 miR-25 TuD significantly restored skeletal muscle Smad7 expression, reduced tissue fibrosis, and enhanced skeletal muscle performance in mdx/utrn (+/-) mice. These results imply that miR-25 TuD gene transfer may be a novel therapeutic approach to restore cardiomyocyte Ca2+ homeostasis and abrogate tissue fibrosis in DMD.
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Affiliation(s)
- Sacha V. Kepreotis
- Cardiovascular Research Institute, Icahn School of Medicine, Mount Sinai, NY, USA
| | - Jae Gyun Oh
- Cardiovascular Research Institute, Icahn School of Medicine, Mount Sinai, NY, USA
| | - Mina Park
- Department of Medicinal and Life Science, College of Science and Convergence Technology, Hanyang University-ERICA, Ansan, South Korea
| | - Jimeen Yoo
- Cardiovascular Research Institute, Icahn School of Medicine, Mount Sinai, NY, USA
| | - Cholong Lee
- Department of Medicinal and Life Science, College of Science and Convergence Technology, Hanyang University-ERICA, Ansan, South Korea
| | - Mark Mercola
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Roger J. Hajjar
- Mass General Brigham Gene and Cell Therapy Institute, Boston, MA, USA
| | - Dongtak Jeong
- Department of Medicinal and Life Science, College of Science and Convergence Technology, Hanyang University-ERICA, Ansan, South Korea
- Cardiovascular Research Institute, Icahn School of Medicine, Mount Sinai, NY, USA
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Saito Y, Yamamoto S, Chikenji TS. Role of cellular senescence in inflammation and regeneration. Inflamm Regen 2024; 44:28. [PMID: 38831382 PMCID: PMC11145896 DOI: 10.1186/s41232-024-00342-5] [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: 02/06/2024] [Accepted: 05/28/2024] [Indexed: 06/05/2024] Open
Abstract
Cellular senescence is the state in which cells undergo irreversible cell cycle arrest and acquire diverse phenotypes. It has been linked to chronic inflammation and fibrosis in various organs as well as to individual aging. Therefore, eliminating senescent cells has emerged as a potential target for extending healthy lifespans. Cellular senescence plays a beneficial role in many biological processes, including embryonic development, wound healing, and tissue regeneration, which is mediated by the activation of stem cells. Therefore, a comprehensive understanding of cellular senescence, including both its beneficial and detrimental effects, is critical for developing safe and effective treatment strategies to target senescent cells. This review provides an overview of the biological and pathological roles of cellular senescence, with a particular focus on its beneficial or detrimental functions among its various roles.
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Affiliation(s)
- Yuki Saito
- Department of Anatomy, Sapporo Medical University School of Medicine, Sapporo, 060-8556, Japan
| | - Sena Yamamoto
- Graduate School of Health Sciences, Hokkaido University, Sapporo, 060-0812, Japan
| | - Takako S Chikenji
- Graduate School of Health Sciences, Hokkaido University, Sapporo, 060-0812, Japan.
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Kuriki M, Korb A, Comai G, Tajbakhsh S. Interplay between Pitx2 and Pax7 temporally governs specification of extraocular muscle stem cells. PLoS Genet 2024; 20:e1010935. [PMID: 38875306 PMCID: PMC11178213 DOI: 10.1371/journal.pgen.1010935] [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: 08/24/2023] [Accepted: 03/05/2024] [Indexed: 06/16/2024] Open
Abstract
Gene regulatory networks that act upstream of skeletal muscle fate determinants are distinct in different anatomical locations. Despite recent efforts, a clear understanding of the cascade of events underlying the emergence and maintenance of the stem cell pool in specific muscle groups remains unresolved and debated. Here, we invalidated Pitx2 with multiple Cre-driver mice prenatally, postnatally, and during lineage progression. We showed that this gene becomes progressively dispensable for specification and maintenance of the muscle stem (MuSC) cell pool in extraocular muscles (EOMs) despite being, together with Myf5, a major upstream regulator during early development. Moreover, constitutive inactivation of Pax7 postnatally led to a greater loss of MuSCs in the EOMs compared to the limb. Thus, we propose a relay between Pitx2, Myf5 and Pax7 for EOM stem cell maintenance. We demonstrate also that MuSCs in the EOMs adopt a quiescent state earlier that those in limb muscles and do not spontaneously proliferate in the adult, yet EOMs have a significantly higher content of Pax7+ MuSCs per area pre- and post-natally. Finally, while limb MuSCs proliferate in the mdx mouse model for Duchenne muscular dystrophy, significantly less MuSCs were present in the EOMs of the mdx mouse model compared to controls, and they were not proliferative. Overall, our study provides a comprehensive in vivo characterisation of MuSC heterogeneity along the body axis and brings further insights into the unusual sparing of EOMs during muscular dystrophy.
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Affiliation(s)
- Mao Kuriki
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, Institut Pasteur, Paris, France
| | - Amaury Korb
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, Institut Pasteur, Paris, France
| | - Glenda Comai
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, Institut Pasteur, Paris, France
| | - Shahragim Tajbakhsh
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, Institut Pasteur, Paris, France
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Tochinai R, Kimura K, Saika T, Fujii W, Morita H, Nakanishi K, Tsuru Y, Sekizawa SI, Yamanouchi K, Kuwahara M. Ivabradine ameliorates cardiomyopathy progression in a Duchenne muscular dystrophy model rat. Exp Anim 2024; 73:145-153. [PMID: 37914289 PMCID: PMC11091361 DOI: 10.1538/expanim.23-0087] [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: 07/04/2023] [Accepted: 10/24/2023] [Indexed: 11/03/2023] Open
Abstract
Duchenne muscular dystrophy (DMD) is an X-linked recessive myopathy caused by dystrophin mutations. Inevitable progressive cardiomyopathy is a current leading cause of premature death although respiratory management has improved the prognosis of patients with DMD. Recent evidence shows that reducing the heart rate is expected as one of the promising strategies for heart failure treatment, but administering a sufficient dose of β-blocker for patients with DMD with tachycardia is difficult because of their low blood pressure (BP). Thus, this study aimed to clarify the role of ivabradine, which suppresses cardiac sinus node pacemakers without decreasing BP, in ameliorating cardiomyopathy progression in a rat model with DMD. A trans-oral single ivabradine administration demonstrated a declined dose-dependent heart rate without any significant BP reduction. Trans-gastric repeated administrations of 5 mg/kg of ivabradine twice a day for 3 months showed ameliorated cardiomyopathy in DMD rats based on echocardiography and histopathological observations (left ventricular dysfunction, right ventricular dysfunction, and myocardial fibrosis) as compared with vehicle administration.Our finding indicates that ivabradine is expected as another treatment choice for patients with DMD having tachycardia.
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Affiliation(s)
- Ryota Tochinai
- Department of Veterinary Pathophysiology and Animal Health, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Koichi Kimura
- Departments of Laboratory Medicine and Cardiology, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Takeru Saika
- Department of Veterinary Pathophysiology and Animal Health, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Wataru Fujii
- Laboratory of Biomedical Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hiroyuki Morita
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-8655, Japan
| | - Koki Nakanishi
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-8655, Japan
| | - Yoshiharu Tsuru
- Life Science Laboratory, Primetech Corporation, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Shin-Ichi Sekizawa
- Department of Veterinary Pathophysiology and Animal Health, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Keitaro Yamanouchi
- Department of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Masayoshi Kuwahara
- Department of Veterinary Pathophysiology and Animal Health, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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Boccardi V, Orr ME, Polidori MC, Ruggiero C, Mecocci P. Focus on senescence: Clinical significance and practical applications. J Intern Med 2024; 295:599-619. [PMID: 38446642 DOI: 10.1111/joim.13775] [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] [Indexed: 03/08/2024]
Abstract
The older population is increasing worldwide, and life expectancy is continuously rising, predominantly thanks to medical and technological progress. Healthspan refers to the number of years an individual can live in good health. From a gerontological viewpoint, the mission is to extend the life spent in good health, promoting well-being and minimizing the impact of aging-related diseases to slow the aging process. Biologically, aging is a malleable process characterized by an intra- and inter-individual heterogeneous and dynamic balance between accumulating damage and repair mechanisms. Cellular senescence is a key component of this process, with senescent cells accumulating in different tissues and organs, leading to aging and age-related disease susceptibility over time. Removing senescent cells from the body or slowing down the burden rate has been proposed as an efficient way to reduce age-dependent deterioration. In animal models, senotherapeutic molecules can extend life expectancy and lifespan by either senolytic or senomorphic activity. Much research shows that dietary and physical activity-driven lifestyle interventions protect against senescence. This narrative review aims to summarize the current knowledge on targeting senescent cells to reduce the risk of age-related disease in animal models and their translational potential for humans. We focused on studies that have examined the potential role of senotherapeutics in slowing the aging process and modifying age-related disease burdens. The review concludes with a general discussion of the mechanisms underlying this unique trajectory and its implications for future research.
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Affiliation(s)
- Virginia Boccardi
- Division of Gerontology and Geriatrics, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Miranda Ethel Orr
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
- Salisbury VA Medical Center, Salisbury, North Carolina, USA
| | - M Cristina Polidori
- Ageing Clinical Research, Department II of Internal Medicine and Center for Molecular Medicine Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress-Responses in Aging-Associated Diseases (CECAD), Faculty of Medicine, University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Carmelinda Ruggiero
- Division of Gerontology and Geriatrics, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Patrizia Mecocci
- Division of Gerontology and Geriatrics, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
- Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
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Souidi M, Resta J, Dridi H, Sleiman Y, Reiken S, Formoso K, Colombani S, Amédro P, Meyer P, Charrabi A, Vincenti M, Liu Y, Soni RK, Lezoualc'h F, Stéphane Blot D, Rivier F, Cazorla O, Parini A, Marks AR, Mialet‐Perez J, Lacampagne A, Meli AC. Ryanodine receptor dysfunction causes senescence and fibrosis in Duchenne dilated cardiomyopathy. J Cachexia Sarcopenia Muscle 2024; 15:536-551. [PMID: 38221511 PMCID: PMC10995256 DOI: 10.1002/jcsm.13411] [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: 03/27/2023] [Revised: 10/03/2023] [Accepted: 11/23/2023] [Indexed: 01/16/2024] Open
Abstract
BACKGROUND Duchenne muscular dystrophy (DMD) is an X-linked disorder characterized by progressive muscle weakness due to the absence of functional dystrophin. DMD patients also develop dilated cardiomyopathy (DCM). We have previously shown that DMD (mdx) mice and a canine DMD model (GRMD) exhibit abnormal intracellular calcium (Ca2+) cycling related to early-stage pathological remodelling of the ryanodine receptor intracellular calcium release channel (RyR2) on the sarcoplasmic reticulum (SR) contributing to age-dependent DCM. METHODS Here, we used hiPSC-CMs from DMD patients selected by Speckle-tracking echocardiography and canine DMD cardiac biopsies to assess key early-stage Duchenne DCM features. RESULTS Dystrophin deficiency was associated with RyR2 remodelling and SR Ca2+ leak (RyR2 Po of 0.03 ± 0.01 for HC vs. 0.16 ± 0.01 for DMD, P < 0.01), which led to early-stage defects including senescence. We observed higher levels of senescence markers including p15 (2.03 ± 0.75 for HC vs. 13.67 ± 5.49 for DMD, P < 0.05) and p16 (1.86 ± 0.83 for HC vs. 10.71 ± 3.00 for DMD, P < 0.01) in DMD hiPSC-CMs and in the canine DMD model. The fibrosis was increased in DMD hiPSC-CMs. We observed cardiac hypocontractility in DMD hiPSC-CMs. Stabilizing RyR2 pharmacologically by S107 prevented most of these pathological features, including the rescue of the contraction amplitude (1.65 ± 0.06 μm for DMD vs. 2.26 ± 0.08 μm for DMD + S107, P < 0.01). These data were confirmed by proteomic analyses, in particular ECM remodelling and fibrosis. CONCLUSIONS We identified key cellular damages that are established earlier than cardiac clinical pathology in DMD patients, with major perturbation of the cardiac ECC. Our results demonstrated that cardiac fibrosis and premature senescence are induced by RyR2 mediated SR Ca2+ leak in DMD cardiomyocytes. We revealed that RyR2 is an early biomarker of DMD-associated cardiac damages in DMD patients. The progressive and later DCM onset could be linked with the RyR2-mediated increased fibrosis and premature senescence, eventually causing cell death and further cardiac fibrosis in a vicious cycle leading to further hypocontractility as a major feature of DCM. The present study provides a novel understanding of the pathophysiological mechanisms of the DMD-induced DCM. By targeting RyR2 channels, it provides a potential pharmacological treatment.
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Affiliation(s)
- Monia Souidi
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
| | - Jessica Resta
- Institute of Metabolic and Cardiovascular Diseases (I2MC), INSERMUniversity of ToulouseToulouseFrance
| | - Haikel Dridi
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular CardiologyColumbia University Vagelos College of Physicians and SurgeonsNew YorkNYUSA
| | - Yvonne Sleiman
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
| | - Steve Reiken
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular CardiologyColumbia University Vagelos College of Physicians and SurgeonsNew YorkNYUSA
| | - Karina Formoso
- Institute of Metabolic and Cardiovascular Diseases (I2MC), INSERMUniversity of ToulouseToulouseFrance
| | - Sarah Colombani
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
| | - Pascal Amédro
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
- Department of Pediatric and Congenital Cardiology, M3C Regional Reference CHD Centre, Clinical Investigation CentreMontpellier University HospitalMontpellierFrance
| | - Pierre Meyer
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
- Department of Pediatric Neurology, Reference Center for Neuromuscular Diseases AOC, Clinical Investigation CentreMontpellier University HospitalMontpellierFrance
| | - Azzouz Charrabi
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
| | - Marie Vincenti
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
- Department of Pediatric and Congenital Cardiology, M3C Regional Reference CHD Centre, Clinical Investigation CentreMontpellier University HospitalMontpellierFrance
| | - Yang Liu
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular CardiologyColumbia University Vagelos College of Physicians and SurgeonsNew YorkNYUSA
| | - Rajesh Kumar Soni
- Proteomics and Macromolecular Crystallography Shared ResourceHerbert Irving Comprehensive Cancer CenterNew YorkNYUSA
| | - Frank Lezoualc'h
- Institute of Metabolic and Cardiovascular Diseases (I2MC), INSERMUniversity of ToulouseToulouseFrance
| | - D.V.M. Stéphane Blot
- IMRB ‐ Biology of the neuromuscular system, INSERM, UPEC, EFS, EnvAMaisons‐AlfortFrance
| | - François Rivier
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
- Department of Pediatric Neurology, Reference Center for Neuromuscular Diseases AOC, Clinical Investigation CentreMontpellier University HospitalMontpellierFrance
| | - Olivier Cazorla
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
| | - Angelo Parini
- Institute of Metabolic and Cardiovascular Diseases (I2MC), INSERMUniversity of ToulouseToulouseFrance
| | - Andrew R. Marks
- Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular CardiologyColumbia University Vagelos College of Physicians and SurgeonsNew YorkNYUSA
| | - Jeanne Mialet‐Perez
- Institute of Metabolic and Cardiovascular Diseases (I2MC), INSERMUniversity of ToulouseToulouseFrance
- Present address:
MitoLab Team, UMR CNRS 6015, INSERM U1083, MitoVasc InstituteAngers UniversityAngersFrance
| | - Alain Lacampagne
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
| | - Albano C. Meli
- PhyMedExpUniversity of Montpellier, INSERM, CNRSMontpellierFrance
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Robertson R, Li S, Filippelli RL, Chang NC. Muscle stem cell dysfunction in rhabdomyosarcoma and muscular dystrophy. Curr Top Dev Biol 2024; 158:83-121. [PMID: 38670717 DOI: 10.1016/bs.ctdb.2024.01.019] [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] [Indexed: 04/28/2024]
Abstract
Muscle stem cells (MuSCs) are crucial to the repair and homeostasis of mature skeletal muscle. MuSC dysfunction and dysregulation of the myogenic program can contribute to the development of pathology ranging from cancers like rhabdomyosarcoma (RMS) or muscle degenerative diseases such as Duchenne muscular dystrophy (DMD). Both diseases exhibit dysregulation at nearly all steps of myogenesis. For instance, MuSC self-renewal processes are altered. In RMS, this leads to the creation of tumor propagating cells. In DMD, impaired asymmetric stem cell division creates a bias towards producing self-renewing stem cells instead of committing to differentiation. Hyperproliferation of these cells contribute to tumorigenesis in RMS and symmetric expansion of the self-renewing MuSC population in DMD. Both diseases also exhibit a repression of factors involved in terminal differentiation, halting RMS cells in the proliferative stage and thus driving tumor growth. Conversely, the MuSCs in DMD exhibit impaired differentiation and fuse prematurely, affecting myonuclei maturation and the integrity of the dystrophic muscle fiber. Finally, both disease states cause alterations to the MuSC niche. Various elements of the niche such as inflammatory and migratory signaling that impact MuSC behavior are dysregulated. Here we show how these seemingly distantly related diseases indeed have similarities in MuSC dysfunction, underlying the importance of considering MuSCs when studying the pathophysiology of muscle diseases.
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Affiliation(s)
- Rebecca Robertson
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC, Canada
| | - Shulei Li
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC, Canada; Rosalind and Morris Goodman Cancer Institute, McGill University, Montréal, QC, Canada
| | - Romina L Filippelli
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC, Canada
| | - Natasha C Chang
- Department of Biochemistry, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC, Canada; Rosalind and Morris Goodman Cancer Institute, McGill University, Montréal, QC, Canada.
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Xie Z, Liu C, Sun C, Lu Y, Wu S, Liu Y, Wang Q, Wan Y, Wang Y, Yu M, Meng L, Deng J, Zhang W, Wang Z, Yang C, Yuan Y, Xie Z. A novel biomarker of fibrofatty replacement in dystrophinopathies identified by integrating transcriptome, magnetic resonance imaging, and pathology data. J Cachexia Sarcopenia Muscle 2024; 15:98-111. [PMID: 38146684 PMCID: PMC10834313 DOI: 10.1002/jcsm.13410] [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: 04/19/2023] [Revised: 08/23/2023] [Accepted: 10/03/2023] [Indexed: 12/27/2023] Open
Abstract
BACKGROUND We aimed to analyse genome-wide transcriptome differences between Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) patients and identify biomarkers that correlate well with muscle magnetic resonance imaging (MRI) and histological fibrofatty replacement in both patients, which have not been reported. METHODS One hundred and one male patients with dystrophinopathies (55 DMD and 46 BMD) were enrolled. Muscle-derived genome-wide RNA-sequencing was performed in 31 DMD patients, 29 BMD patients, and 11 normal controls. Fibrofatty replacement was scored on muscle MRI and histological levels in all patients. A unique pipeline, single-sample gene set enrichment analysis combined with Spearman's rank correlations (ssGSEA-Cor) was developed to identify the most correlated gene signature for fibrofatty replacement. Quantitative real-time PCR (qRT-PCR) analysis, western blot analysis, and single-nucleus RNA-sequencing (snRNA-seq) were performed in the remaining patients to validate the most correlated gene signature. RESULTS Comparative transcriptomic analysis revealed that 31 DMD muscles were characterized by a significant increase of inflammation/immune response and extracellular matrix remodelling compared with 29 BMD muscles (P < 0.05). The ssGSEA-Cor pipeline revealed that the gene set of CDKN2A and CDKN2B was the most correlated gene signature for fibrofatty replacement (histological rs = 0.744, P < 0.001; MRI rs = 0.718, P < 0.001). Muscle qRT-PCR confirmed that CDKN2A mRNA expression in both 15 DMD (median = 25.007, P < 0.001) and 12 BMD (median = 5.654, P < 0.001) patients were significantly higher than that in controls (median = 1.101), while no significant difference in CDKN2B mRNA expression was found among DMD, BMD, and control groups. In the 27 patients, muscle CDKN2A mRNA expression respectively correlated with muscle MRI (rs = 0.883, P < 0.001) and histological fibrofatty replacement (rs = 0.804, P < 0.001) and disease duration (rs = 0.645, P < 0.001) and North Star Ambulatory Assessment total scores (rs = -0.698, P < 0.001). Muscle western blot analysis confirmed that both four DMD (median = 2.958, P < 0.05) and four BMD (median = 1.959, P < 0.01) patients had a significantly higher level of CDKN2A protein expression than controls (median = 1.068). The snRNA-seq analysis of two DMD muscles revealed that CDKN2A was mainly expressed in fibro-adipogenic progenitors, satellite cells, and myoblasts. CONCLUSIONS We identify CDKN2A expression as a novel biomarker of fibrofatty replacement, which might be a new target for antifibrotic therapy in dystrophinopathies.
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Affiliation(s)
- Zhihao Xie
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth HospitalSichuan UniversityChengduChina
| | - Chang Liu
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Chengyue Sun
- Department of NeurologyPeking University People's HospitalBeijingChina
| | - Yanyu Lu
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Shiyi Wu
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth HospitalSichuan UniversityChengduChina
| | - Yilin Liu
- Department of PathologyPeking Union Medical College HospitalBeijingChina
| | - Qi Wang
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Yalan Wan
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Yikang Wang
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Meng Yu
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Lingchao Meng
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Jianwen Deng
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Wei Zhang
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Zhaoxia Wang
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Chunxia Yang
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth HospitalSichuan UniversityChengduChina
| | - Yun Yuan
- Department of NeurologyPeking University First HospitalBeijingChina
| | - Zhiying Xie
- Department of NeurologyPeking University First HospitalBeijingChina
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10
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Careccia G, Mangiavini L, Cirillo F. Regulation of Satellite Cells Functions during Skeletal Muscle Regeneration: A Critical Step in Physiological and Pathological Conditions. Int J Mol Sci 2023; 25:512. [PMID: 38203683 PMCID: PMC10778731 DOI: 10.3390/ijms25010512] [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: 10/26/2023] [Revised: 12/20/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
Skeletal muscle regeneration is a complex process involving the generation of new myofibers after trauma, competitive physical activity, or disease. In this context, adult skeletal muscle stem cells, also known as satellite cells (SCs), play a crucial role in regulating muscle tissue homeostasis and activating regeneration. Alterations in their number or function have been associated with various pathological conditions. The main factors involved in the dysregulation of SCs' activity are inflammation, oxidative stress, and fibrosis. This review critically summarizes the current knowledge on the role of SCs in skeletal muscle regeneration. It examines the changes in the activity of SCs in three of the most common and severe muscle disorders: sarcopenia, muscular dystrophy, and cancer cachexia. Understanding the molecular mechanisms involved in their dysregulations is essential for improving current treatments, such as exercise, and developing personalized approaches to reactivate SCs.
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Affiliation(s)
- Giorgia Careccia
- Department of Biosciences, University of Milan, 20133 Milan, Italy;
| | - Laura Mangiavini
- IRCCS Istituto Ortopedico Galeazzi, 20161 Milan, Italy;
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
| | - Federica Cirillo
- IRCCS Policlinico San Donato, 20097 San Donato Milanese, Italy
- Institute for Molecular and Translational Cardiology (IMTC), 20097 San Donato Milanese, Italy
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11
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Cardone N, Taglietti V, Baratto S, Kefi K, Periou B, Gitiaux C, Barnerias C, Lafuste P, Pharm FL, Pharm JN, Panicucci C, Desguerre I, Bruno C, Authier FJ, Fiorillo C, Relaix F, Malfatti E. Myopathologic trajectory in Duchenne muscular dystrophy (DMD) reveals lack of regeneration due to senescence in satellite cells. Acta Neuropathol Commun 2023; 11:167. [PMID: 37858263 PMCID: PMC10585739 DOI: 10.1186/s40478-023-01657-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 09/19/2023] [Indexed: 10/21/2023] Open
Abstract
Duchenne muscular dystrophy (DMD) is a devastating X-linked muscular disease, caused by mutations in the DMD gene encoding Dystrophin and affecting 1:5000 boys worldwide. Lack of Dystrophin leads to progressive muscle wasting and degeneration resulting in cardiorespiratory failure. Despite the absence of a definitive cure, innovative therapeutic avenues are emerging. Myopathologic studies are important to further understand the biological mechanisms of the disease and to identify histopathologic benchmarks for clinical evaluations. We conducted a myopathologic analysis on twenty-four muscle biopsies from DMD patients, with particular emphasis on regeneration, fibro-adipogenic progenitors and muscle stem cells behavior. We describe an increase in content of fibro-adipogenic progenitors, central orchestrators of fibrotic progression and lipid deposition, concurrently with a decline in muscle regenerative capacity. This regenerative impairment strongly correlates with compromised activation and expansion of muscle stem cells. Furthermore, our study uncovers an early acquisition of a senescence phenotype by DMD-afflicted muscle stem cells. Here we describe the myopathologic trajectory intrinsic to DMD and establish muscle stem cell senescence as a pivotal readout for future therapeutic interventions.
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Affiliation(s)
| | | | - Serena Baratto
- Centre of Translational and Experimental Myology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Kaouthar Kefi
- Univ Paris Est Creteil, INSERM, IMRB, 94010, Creteil, France
| | - Baptiste Periou
- Univ Paris Est Creteil, INSERM, IMRB, 94010, Creteil, France
- APHP, Filnemus, EuroNMD, Centre de Référence de Pathologie Neuromusculaire Nord-Est-Ile-de-France, Henri Mondor Hospital, Paris, France
| | - Ciryl Gitiaux
- Neurophysiologie clinique pédiatrique, Centre de référence des maladies neuromusculaires Hôpital universitaire Necker-Enfants Malades-Paris, Centre de Référence de Pathologie Neuromusculaire Nord-Est-Ile-de-France, Henri Mondor Hospital, Université Paris Est, U955 INSERM, IMRB, APHP, Creteil, France
- Reference Center for Neuromuscular Disorders, Filnemus, EuroNMD, Assistance Publique-Hôpitaux de Paris (APHP) Necker Enfants Malades Hospital, Paris, France
| | - Christine Barnerias
- Reference Center for Neuromuscular Disorders, Filnemus, EuroNMD, Assistance Publique-Hôpitaux de Paris (APHP) Necker Enfants Malades Hospital, Paris, France
| | - Peggy Lafuste
- Univ Paris Est Creteil, INSERM, IMRB, 94010, Creteil, France
| | - France Leturcq Pharm
- Service de Médecine Génomique, Maladies de Système et d'Organe - Fédération de Génétique et de Médecine Génomique, DMU BioPhyGen, APHP Centre-Université Paris Cité - Hôpital Cochin, Paris, France
| | - Juliette Nectoux Pharm
- Service de Médecine Génomique, Maladies de Système et d'Organe - Fédération de Génétique et de Médecine Génomique, DMU BioPhyGen, APHP Centre-Université Paris Cité - Hôpital Cochin, Paris, France
| | - Chiara Panicucci
- Centre of Translational and Experimental Myology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Isabelle Desguerre
- Reference Center for Neuromuscular Disorders, Filnemus, EuroNMD, Assistance Publique-Hôpitaux de Paris (APHP) Necker Enfants Malades Hospital, Paris, France
| | - Claudio Bruno
- Centre of Translational and Experimental Myology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health-DINOGMI, University of Genova, Genoa, Italy
| | - François-Jerome Authier
- Univ Paris Est Creteil, INSERM, IMRB, 94010, Creteil, France
- APHP, Filnemus, EuroNMD, Centre de Référence de Pathologie Neuromusculaire Nord-Est-Ile-de-France, Henri Mondor Hospital, Paris, France
| | - Chiara Fiorillo
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health-DINOGMI, University of Genova, Genoa, Italy
- Child Neuropsychiatry, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Frederic Relaix
- Univ Paris Est Creteil, INSERM, IMRB, 94010, Creteil, France.
| | - Edoardo Malfatti
- Univ Paris Est Creteil, INSERM, IMRB, 94010, Creteil, France.
- APHP, Filnemus, EuroNMD, Centre de Référence de Pathologie Neuromusculaire Nord-Est-Ile-de-France, Henri Mondor Hospital, Paris, France.
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12
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Dowling P, Swandulla D, Ohlendieck K. Cellular pathogenesis of Duchenne muscular dystrophy: progressive myofibre degeneration, chronic inflammation, reactive myofibrosis and satellite cell dysfunction. Eur J Transl Myol 2023; 33:11856. [PMID: 37846661 PMCID: PMC10811648 DOI: 10.4081/ejtm.2023.11856] [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: 09/21/2023] [Accepted: 10/10/2023] [Indexed: 10/18/2023] Open
Abstract
Duchenne muscular dystrophy is a highly progressive muscle wasting disease of early childhood and characterized by complex pathophysiological and histopathological changes in the voluntary contractile system, including myonecrosis, chronic inflammation, fat substitution and reactive myofibrosis. The continued loss of functional myofibres and replacement with non-contractile cells, as well as extensive tissue scarring and decline in tissue elasticity, leads to severe skeletal muscle weakness. In addition, dystrophic muscles exhibit a greatly diminished regenerative capacity to counteract the ongoing process of fibre degeneration. In normal muscle tissues, an abundant stem cell pool consisting of satellite cells that are localized between the sarcolemma and basal lamina, provides a rich source for the production of activated myogenic progenitor cells that are involved in efficient myofibre repair and tissue regeneration. Interestingly, the self-renewal of satellite cells for maintaining an essential pool of stem cells in matured skeletal muscles is increased in dystrophin-deficient fibres. However, satellite cell hyperplasia does not result in efficient recovery of dystrophic muscles due to impaired asymmetric cell divisions. The lack of expression of the full-length dystrophin isoform Dp427-M, which is due to primary defects in the DMD gene, appears to affect key regulators of satellite cell polarity causing a reduced differentiation of myogenic progenitors, which are essential for myofibre regeneration. This review outlines the complexity of dystrophinopathy and describes the importance of the pathophysiological role of satellite cell dysfunction. A brief discussion of the bioanalytical usefulness of single cell proteomics for future studies of satellite cell biology is provided.
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Affiliation(s)
- Paul Dowling
- Department of Biology, Maynooth University, National University of Ireland, Maynooth, Co. Kildare, Ireland; Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Co. Kildare.
| | - Dieter Swandulla
- Institute of Physiology, Medical Faculty, University of Bonn, Bonn.
| | - Kay Ohlendieck
- Department of Biology, Maynooth University, National University of Ireland, Maynooth, Co. Kildare, Ireland; Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Co. Kildare.
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13
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Gross DC, Cheever CR, Batsis JA. Understanding the development of sarcopenic obesity. Expert Rev Endocrinol Metab 2023; 18:469-488. [PMID: 37840295 PMCID: PMC10842411 DOI: 10.1080/17446651.2023.2267672] [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: 03/02/2023] [Accepted: 10/03/2023] [Indexed: 10/17/2023]
Abstract
INTRODUCTION Sarcopenic obesity (SarcO) is defined as the confluence of reduced muscle mass and function and excess body fat. The scientific community is increasingly recognizing this syndrome, which affects a subgroup of persons across their lifespans and places them at synergistically higher risk of significant medical comorbidity and disability than either sarcopenia or obesity alone. Joint efforts in clinical and research settings are imperative to better understand this syndrome and drive the development of urgently needed future interventions. AREAS COVERED Herein, we describe the ongoing challenges in defining sarcopenic obesity and the current state of the science regarding its epidemiology and relationship with adverse events. The field has demonstrated an emergence of data over the past decade which we will summarize in this article. While the etiology of sarcopenic obesity is complex, we present data on the underlying pathophysiological mechanisms that are hypothesized to promote its development, including age-related changes in body composition, hormonal changes, chronic inflammation, and genetic predisposition. EXPERT OPINION We describe emerging areas of future research that will likely be needed to advance this nascent field, including changes in clinical infrastructure, an enhanced understanding of the lifecourse, and potential treatments.
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Affiliation(s)
- Danae C. Gross
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - C. Ray Cheever
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - John A. Batsis
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Division of Geriatric Medicine, UNC School of Medicine, Chapel Hill, North Carolina, USA
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14
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Kim MY, Shin HY, Cho SC, Yang S, Intisar A, Woo HJ, Choi YS, You CL, Kang JS, Lee YI, Park SC, Yea K, Oh TG, Downes M, Evans RM, Kim MS. Silver electroceutical technology to treat sarcopenia. Proc Natl Acad Sci U S A 2023; 120:e2300036120. [PMID: 37549292 PMCID: PMC10438839 DOI: 10.1073/pnas.2300036120] [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: 01/02/2023] [Accepted: 06/22/2023] [Indexed: 08/09/2023] Open
Abstract
While the world is rapidly transforming into a superaging society, pharmaceutical approaches to treat sarcopenia have hitherto not been successful due to their insufficient efficacy and failure to specifically target skeletal muscle cells (skMCs). Although electrical stimulation (ES) is emerging as an alternative intervention, its efficacy toward treating sarcopenia remains unexplored. In this study, we demonstrate a silver electroceutical technology with the potential to treat sarcopenia. First, we developed a high-throughput ES screening platform that can simultaneously stimulate 15 independent conditions, while utilizing only a small number of human-derived primary aged/young skMCs (hAskMC/hYskMC). The in vitro screening showed that specific ES conditions induced hypertrophy and rejuvenation in hAskMCs, and the optimal ES frequency in hAskMCs was different from that in hYskMCs. When applied to aged mice in vivo, specific ES conditions improved the prevalence and thickness of Type IIA fibers, along with biomechanical attributes, toward a younger skMC phenotype. This study is expected to pave the way toward an electroceutical treatment for sarcopenia with minimal side effects and help realize personalized bioelectronic medicine.
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Affiliation(s)
- Min Young Kim
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
| | - Hyun Young Shin
- CTCELLS, Inc., Daegu42988, Republic of Korea
- SBCure Corp., Daegu43017, Republic of Korea
| | - Sung Chun Cho
- Well Aging Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
| | - Sohae Yang
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
| | - Aseer Intisar
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
| | - Hyeong Jung Woo
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
| | - Youn-Suk Choi
- Samsung Advanced Institute of Technology, Samsung Electronics Co. Ltd., Suwon16678, Republic of Korea
| | - Chang-Lim You
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon16419, Republic of Korea
| | - Jong-Sun Kang
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon16419, Republic of Korea
| | - Yun-Il Lee
- Well Aging Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
| | - Sang Chul Park
- Chonnam National University Medical School, Gwangju61186, Republic of Korea
| | - Kyungmoo Yea
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
| | - Tae Gyu Oh
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA92037
| | - Michael Downes
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA92037
| | - Ronald M. Evans
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA92037
| | - Minseok S. Kim
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
- CTCELLS, Inc., Daegu42988, Republic of Korea
- Translational Responsive Medicine Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
- New Biology Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of Korea
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15
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Guan L, Cao Z, Pan Z, Zhao C, Xue M, Yang F, Chen J. Butyrate promotes C2C12 myoblast proliferation by activating ERK/MAPK pathway. Mol Omics 2023; 19:552-559. [PMID: 37204279 DOI: 10.1039/d2mo00256f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Sarcopenia has garnered considerable interest in recent years as ageing-associated diseases constitute a significant worldwide public health burden. Nutritional supplements have received much attention as potential tools for managing sarcopenia. However, the specific nutrients responsible are still under-investigated. In the current study, we first determined the levels of short chain fatty acids (SCFAs) and intestinal flora in the feces of elderly sarcopenia subjects and elderly healthy individuals by ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). Then cell viability detection, flow cytometry and transcriptome analysis were adopted to experimentally evaluate the effect and the underlying mechanism of SCFA on C2C12 cells proliferation in vitro. The results suggested that patients with sarcopenia exhibited decreased levels of butyrate. And butyrate may stimulate C2C12 myocyte proliferation via promoting G1/S cell cycle transition. Transcriptomic analyses pointed to upregulation of the Mitogen-activated protein kinase (MAPK) signaling pathway in butyrate-treated cells. In addition, the above proliferative phenotypes could be suppressed by the combination of ERK/MAPK inhibitor. A combined transcriptomic and metabolomic approach was applied in our study to investigate the potential effect of microbiota-derived butyrate yield on muscular proliferation which may indicate a protective effect of nutritional supplements.
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Affiliation(s)
- Li Guan
- Department of Gastroenterology, Huadong Hospital affiliated to Fudan University, Shanghai, China.
| | - Ziyi Cao
- Department of Gastroenterology, Huadong Hospital affiliated to Fudan University, Shanghai, China.
| | - Ziyue Pan
- Department of Gastroenterology, Minhang Hospital affiliated to Fudan University, Shanghai, China
| | - Chao Zhao
- Key Laboratory of Medical Molecular Virology, School of Basic Medical sciences, Shanghai Medical College, Fudan university, Shanghai, China
| | - Mengjuan Xue
- Department of Endocrine, Huadong Hospital affiliated to Fudan University, Shanghai, China
| | - Fan Yang
- Shanghai Key laboratory of Clinical Geriatric Medicine, Shanghai, China.
| | - Jie Chen
- Department of Gastroenterology, Huadong Hospital affiliated to Fudan University, Shanghai, China.
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16
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Dowling P, Gargan S, Zweyer M, Swandulla D, Ohlendieck K. Extracellular Matrix Proteomics: The mdx-4cv Mouse Diaphragm as a Surrogate for Studying Myofibrosis in Dystrophinopathy. Biomolecules 2023; 13:1108. [PMID: 37509144 PMCID: PMC10377647 DOI: 10.3390/biom13071108] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/06/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
The progressive degeneration of the skeletal musculature in Duchenne muscular dystrophy is accompanied by reactive myofibrosis, fat substitution, and chronic inflammation. Fibrotic changes and reduced tissue elasticity correlate with the loss in motor function in this X-chromosomal disorder. Thus, although dystrophinopathies are due to primary abnormalities in the DMD gene causing the almost-complete absence of the cytoskeletal Dp427-M isoform of dystrophin in voluntary muscles, the excessive accumulation of extracellular matrix proteins presents a key histopathological hallmark of muscular dystrophy. Animal model research has been instrumental in the characterization of dystrophic muscles and has contributed to a better understanding of the complex pathogenesis of dystrophinopathies, the discovery of new disease biomarkers, and the testing of novel therapeutic strategies. In this article, we review how mass-spectrometry-based proteomics can be used to study changes in key components of the endomysium, perimysium, and epimysium, such as collagens, proteoglycans, matricellular proteins, and adhesion receptors. The mdx-4cv mouse diaphragm displays severe myofibrosis, making it an ideal model system for large-scale surveys of systematic alterations in the matrisome of dystrophic fibers. Novel biomarkers of myofibrosis can now be tested for their appropriateness in the preclinical and clinical setting as diagnostic, pharmacodynamic, prognostic, and/or therapeutic monitoring indicators.
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Affiliation(s)
- Paul Dowling
- Department of Biology, Maynooth University, National University of Ireland, W23 F2H6 Maynooth, Co. Kildare, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth University, National University of Ireland, W23 F2H6 Maynooth, Co. Kildare, Ireland
| | - Stephen Gargan
- Department of Biology, Maynooth University, National University of Ireland, W23 F2H6 Maynooth, Co. Kildare, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth University, National University of Ireland, W23 F2H6 Maynooth, Co. Kildare, Ireland
| | - Margit Zweyer
- Department of Neonatology and Paediatric Intensive Care, Children's Hospital, German Center for Neurodegenerative Diseases, University of Bonn, D53127 Bonn, Germany
| | - Dieter Swandulla
- Institute of Physiology, Medical Faculty, University of Bonn, D53115 Bonn, Germany
| | - Kay Ohlendieck
- Department of Biology, Maynooth University, National University of Ireland, W23 F2H6 Maynooth, Co. Kildare, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth University, National University of Ireland, W23 F2H6 Maynooth, Co. Kildare, Ireland
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17
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Dungan CM, Wells JM, Murach KA. The life and times of cellular senescence in skeletal muscle: friend or foe for homeostasis and adaptation? Am J Physiol Cell Physiol 2023; 325:C324-C331. [PMID: 37335024 PMCID: PMC10393344 DOI: 10.1152/ajpcell.00553.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 06/08/2023] [Accepted: 06/08/2023] [Indexed: 06/21/2023]
Abstract
A gradual decline in skeletal muscle mass and function is closely tied to increased mortality and disease risk during organismal aging. Exercise training is the most effective way to enhance muscle health, but the adaptive response to exercise as well as muscle repair potential is blunted in older individuals. Numerous mechanisms contribute to the loss of muscle mass and plasticity as aging progresses. An emerging body of recent evidence implicates an accumulation of senescent ("zombie") cells in muscle as a contributing factor to the aging phenotype. Senescent cells cannot divide but can release inflammatory factors and create an unfavorable environment for homeostasis and adaptation. On balance, some evidence indicates that cells with senescent characteristics can be beneficial for the muscle adaptive process, specifically at younger ages. Emerging evidence also suggests that multinuclear muscle fibers could become senescent. In this review, we summarize current literature on the prevalence of senescent cells in skeletal muscle and highlight the consequences of senescent cell removal on muscle mass, function, and adaptability. We examine key limitations in the field of senescence specifically in skeletal muscle and identify areas of research that require future investigation.NEW & NOTEWORTHY There is evidence to suggest that senescent "zombie" cells may or may not accrue in aging skeletal muscle. When muscle is perturbed regardless of age, senescent-like cells do appear, and the benefits of removing them could be age-dependent. More work is needed to determine the magnitude of accumulation and source of senescent cells in muscle. Regardless, pharmacological senolytic treatment of aged muscle is beneficial for adaptation.
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Affiliation(s)
- Cory M Dungan
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, United States
| | - Jaden M Wells
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, United States
| | - Kevin A Murach
- Department of Health, Human Performance, and Recreation, University of Arkansas, Fayetteville, Arkansas, United States
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18
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Kodippili K, Rudnicki MA. Satellite cell contribution to disease pathology in Duchenne muscular dystrophy. Front Physiol 2023; 14:1180980. [PMID: 37324396 PMCID: PMC10266354 DOI: 10.3389/fphys.2023.1180980] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/23/2023] [Indexed: 06/17/2023] Open
Abstract
Progressive muscle weakness and degeneration characterize Duchenne muscular dystrophy (DMD), a lethal, x-linked neuromuscular disorder that affects 1 in 5,000 boys. Loss of dystrophin protein leads to recurrent muscle degeneration, progressive fibrosis, chronic inflammation, and dysfunction of skeletal muscle resident stem cells, called satellite cells. Unfortunately, there is currently no cure for DMD. In this mini review, we discuss how satellite cells in dystrophic muscle are functionally impaired, and how this contributes to the DMD pathology, and the tremendous potential of restoring endogenous satellite cell function as a viable treatment strategy to treat this debilitating and fatal disease.
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Affiliation(s)
- Kasun Kodippili
- The Sprott Centre for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Michael A. Rudnicki
- The Sprott Centre for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
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19
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Bobadilla Muñoz M, Orbe J, Abizanda G, Machado FJD, Vilas A, Ullate-Agote A, Extramiana L, Baraibar Churio A, Aranguren XL, Cantero G, Sáinz Amillo N, Rodríguez JA, Ramos García L, Romero Riojas JP, Vallejo-Illarramendi A, Paradas C, López de Munain A, Páramo JA, Prósper F, Pérez-Ruiz A. Loss of the matrix metalloproteinase-10 causes premature features of aging in satellite cells. Front Cell Dev Biol 2023; 11:1128534. [PMID: 37228645 PMCID: PMC10203875 DOI: 10.3389/fcell.2023.1128534] [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: 12/20/2022] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
Aged muscles accumulate satellite cells with a striking decline response to damage. Although intrinsic defects in satellite cells themselves are the major contributors to aging-associated stem cell dysfunction, increasing evidence suggests that changes in the muscle-stem cell local microenvironment also contribute to aging. Here, we demonstrate that loss of the matrix metalloproteinase-10 (MMP-10) in young mice alters the composition of the muscle extracellular matrix (ECM), and specifically disrupts the extracellular matrix of the satellite cell niche. This situation causes premature features of aging in the satellite cells, contributing to their functional decline and a predisposition to enter senescence under proliferative pressure. Similarly, reduction of MMP-10 levels in young satellite cells from wild type animals induces a senescence response, while addition of the protease delays this program. Significantly, the effect of MMP-10 on satellite cell aging can be extended to another context of muscle wasting, muscular dystrophy. Systemic treatment of mdx dystrophic mice with MMP-10 prevents the muscle deterioration phenotype and reduces cellular damage in the satellite cells, which are normally under replicative pressure. Most importantly, MMP-10 conserves its protective effect in the satellite cell-derived myoblasts isolated from a Duchenne muscular dystrophy patient by decreasing the accumulation of damaged DNA. Hence, MMP-10 provides a previously unrecognized therapeutic opportunity to delay satellite cell aging and overcome satellite cell dysfunction in dystrophic muscles.
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Affiliation(s)
- Miriam Bobadilla Muñoz
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Josune Orbe
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Laboratory of Atherothrombosis, Program of Cardiovascular Diseases, CIMA Universidad de Navarra, Pamplona, Spain
- Redes de Investigación Cooperativa Orientadas a Resultados en Salud (RICORS)-Ictus, Instituto de Salud Carlos III, Madrid, Spain
| | - Gloria Abizanda
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Florencio J. D. Machado
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Laboratory of Atherothrombosis, Program of Cardiovascular Diseases, CIMA Universidad de Navarra, Pamplona, Spain
| | - Amaia Vilas
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Asier Ullate-Agote
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Leire Extramiana
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Arantxa Baraibar Churio
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Xabier L. Aranguren
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Gloria Cantero
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Neuromuscular Disorders Unit, Sevilla, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Neira Sáinz Amillo
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Centre for Nutrition Research, Universidad de Navarra, Pamplona, Spain
| | - José Antonio Rodríguez
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Laboratory of Atherothrombosis, Program of Cardiovascular Diseases, CIMA Universidad de Navarra, Pamplona, Spain
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
| | - Luis Ramos García
- Radiology Department, Clínica Universidad de Navarra, Pamplona, Spain
- Radiology Department, Osakidetza Basque Health Service, Donostialdea Integrated Health Organisation, San Sebastian, Spain
| | - Juan Pablo Romero Riojas
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | | | - Carmen Paradas
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Neuromuscular Disorders Unit, Sevilla, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Adolfo López de Munain
- CIBERNED-Biodonostia, Neurosciences Area, Group of Neuromuscular Diseases, San Sebastian, Spain
- Neurology Department, Osakidetza Basque Health Service, Donostialdea Integrated Health Organisation, San Sebastian, Spain
| | - José Antonio Páramo
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Laboratory of Atherothrombosis, Program of Cardiovascular Diseases, CIMA Universidad de Navarra, Pamplona, Spain
- Centro de Investigación en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
- Hematology Service, Clínica Universidad de Navarra, Pamplona, Spain
| | - Felipe Prósper
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Laboratory of Atherothrombosis, Program of Cardiovascular Diseases, CIMA Universidad de Navarra, Pamplona, Spain
| | - Ana Pérez-Ruiz
- Regenerative Medicine Program, Center for Applied Medical Research (CIMA) Universidad de Navarra, CIBERONC, Madrid, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
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20
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Taglietti V, Kefi K, Rivera L, Bergiers O, Cardone N, Coulpier F, Gioftsidi S, Drayton-Libotte B, Hou C, Authier FJ, Pietri-Rouxel F, Robert M, Bremond-Gignac D, Bruno C, Fiorillo C, Malfatti E, Lafuste P, Tiret L, Relaix F. Thyroid-stimulating hormone receptor signaling restores skeletal muscle stem cell regeneration in rats with muscular dystrophy. Sci Transl Med 2023; 15:eadd5275. [PMID: 36857434 DOI: 10.1126/scitranslmed.add5275] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Duchenne muscular dystrophy (DMD) is a severe and progressive myopathy leading to motor and cardiorespiratory impairment. We analyzed samples from patients with DMD and a preclinical rat model of severe DMD and determined that compromised repair capacity of muscle stem cells in DMD is associated with early and progressive muscle stem cell senescence. We also found that extraocular muscles (EOMs), which are spared by the disease in patients, contain muscle stem cells with long-lasting regenerative potential. Using single-cell transcriptomics analysis of muscles from a rat model of DMD, we identified the gene encoding thyroid-stimulating hormone receptor (Tshr) as highly expressed in EOM stem cells. Further, TSHR activity was involved in preventing senescence. Forskolin, which activates signaling downstream of TSHR, was found to reduce senescence of skeletal muscle stem cells, increase stem cell regenerative potential, and promote myogenesis, thereby improving muscle function in DMD rats. These findings indicate that stimulation of adenylyl cyclase leads to muscle repair in DMD, potentially providing a therapeutic approach for patients with the disease.
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Affiliation(s)
| | - Kaouthar Kefi
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France
| | - Lea Rivera
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France
| | - Oriane Bergiers
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France
| | - Nastasia Cardone
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France
| | - Fanny Coulpier
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France
| | | | | | - Cyrielle Hou
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France
| | - François-Jérôme Authier
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France.,AP-HP, Hôpital Mondor, FHU SENEC, Service d'histologie, F-94010 Créteil, France
| | - France Pietri-Rouxel
- Sorbonne Université, INSERM, UMRS974, Center for Research in Myology, F-75013, Paris, France
| | - Matthieu Robert
- Borelli centre, UMR 9010, CNRS - SSA - ENS Paris Saclay - Université Paris Cité, F-75016, Paris, France.,Ophthalmology Department, Necker Enfants Malades University Hospital, AP-HP, F-75015, Paris, France
| | - Dominique Bremond-Gignac
- Ophthalmology Department, Necker Enfants Malades University Hospital, AP-HP, F-75015, Paris, France.,INSERM, UMRS1138, Team 17, Sorbonne Paris Cité University, Centre de Recherche des Cordeliers, F-75006, Paris, France
| | - Claudio Bruno
- Center of Translational and Experimental Myology, IRCCS Gaslini Institute, DINOGMI, University of Genova, 16147, Genova, Italy
| | - Chiara Fiorillo
- Center of Translational and Experimental Myology, IRCCS Gaslini Institute, DINOGMI, University of Genova, 16147, Genova, Italy
| | - Edoardo Malfatti
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France.,AP-HP, Hôpital Mondor, FHU SENEC, Service d'histologie, F-94010 Créteil, France
| | - Peggy Lafuste
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France
| | - Laurent Tiret
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France.,École nationale vétérinaire d'Alfort, IMRB, F-94700, Maisons-Alfort, France
| | - Frédéric Relaix
- Univ Paris-Est Créteil, INSERM, U955 IMRB, F-94010 Créteil, France.,AP-HP, Hôpital Mondor, FHU SENEC, Service d'histologie, F-94010 Créteil, France.,École nationale vétérinaire d'Alfort, IMRB, F-94700, Maisons-Alfort, France.,EFS, IMRB, F-94010, Creteil, France
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21
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Nie C, Wang B, Fan M, Wang Y, Sun Y, Qian H, Li Y, Wang L. Highland Barley Tea Polyphenols Extract Alleviates Skeletal Muscle Fibrosis in Mice by Reducing Oxidative Stress, Inflammation, and Cell Senescence. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:739-748. [PMID: 36538519 DOI: 10.1021/acs.jafc.2c05246] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The tea of roasted Highland barley is a cereal-based drink rich in polyphenols. A model of skeletal muscle senescence and fibrosis was constructed using d-galactose-induced C2C12 myotubes, and Highland barley tea Polyphenols (HBP) were extracted for the intervention. We found that HBP effectively alleviated oxidative stress, inflammation, and fibrosis induced by d-galactose-induced skeletal muscle senescence. Also, HBP treatment significantly down-regulated pro-fibrotic genes, inflammation, and oxidative stress levels in a contusion model of senescent mice. Reduced levels of SIRT3 protein was found to be an essential factor in skeletal muscle senescence and fibrosis in both cellular and animal models, while HBP treatment significantly increased SIRT3 protein levels and viability in skeletal muscle. The ability of HBP to mitigate skeletal muscle fibrosis and oxidative stress was significantly reduced after SIRT3 silencing. Together, these results suggest that HBP intervention can significantly alleviate aging-induced oxidative stress, inflammation, and skeletal muscle fibrosis, with the activation of SIRT3 as the underlying mechanism of action.
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Affiliation(s)
- Chenzhipeng Nie
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Ben Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Mingcong Fan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yu Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yujie Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Haifeng Qian
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yan Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Li Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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22
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Fujikura Y, Yamanouchi K, Sugihara H, Hatakeyama M, Abe T, Ato S, Oishi K. Ketogenic diet containing medium-chain triglyceride ameliorates transcriptome disruption in skeletal muscles of rat models of duchenne muscular dystrophy. Biochem Biophys Rep 2022; 32:101378. [PMID: 36386439 PMCID: PMC9661647 DOI: 10.1016/j.bbrep.2022.101378] [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: 08/16/2022] [Revised: 10/25/2022] [Accepted: 11/02/2022] [Indexed: 11/13/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a myopathy characterized by progressive muscle weakness caused by a mutation in the dystrophin gene on the X chromosome. We recently showed that a medium-chain triglyceride-containing ketogenic diet (MCTKD) improves skeletal muscle myopathy in a CRISPR/Cas9 gene-edited rat model of DMD. We examined the effects of the MCTKD on transcription profiles in skeletal muscles of the model rats to assess the underlying mechanism of the MCTKD-induced improvement in DMD. DMD rats were fed MCTKD or normal diet (ND) from weaning to 9 months, and wild-type rats were fed with the ND, then tibialis anterior muscles were sampled for mRNA-seq analysis. Pearson correlation heatmaps revealed a one-node transition in the expression profile between DMD and wild-type rats. A total of 10,440, 11,555 and 11,348 genes were expressed in the skeletal muscles of wild-type and ND-fed DMD rats the MCTKD-fed DMD rats, respectively. The MCTKD reduced the number of DMD-specific mRNAs from 1624 to 1350 and increased the number of mRNAs in common with wild-type rats from 9931 to 9998. Among 2660 genes were differentially expressed in response to MCTKD intake, the mRNA expression of 1411 and 1249 of them was respectively increased and decreased. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses suggested that the MCTKD significantly suppressed the mRNA expression of genes associated with extracellular matrix organization and inflammation. This suggestion was consistent with our previous findings that the MCTKD significantly suppressed fibrosis and inflammation in DMD rats. In contrast, the MCTKD significantly increased the mRNA expression of genes associated with oxidative phosphorylation and ATP production pathways, suggesting altered energy metabolism. The decreased and increased mRNA expression of Sln and Atp2a1 respectively suggested that Sarco/endoplasmic reticulum Ca2+-ATPase activation is involved in the MCTKD-induced improvement of skeletal muscle myopathy in DMD rats. This is the first report to examine transcription profiles in the skeletal muscle of CRISPR/Cas9 gene-edited DMD model rats and the effect of MCTKD feeding on it. We evaluated the effects of an MCTKD on the global transcriptome of DMD rats. DMD rats are suitable models of human DMD for assessing transcriptome changes. MCTKD suppressed fibrosis and inflammatory pathways at the transcriptional level. MCTKD upregulated oxidative phosphorylation and ATP production pathways. MCTKD might activate SERCA at the transcriptional level.
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Affiliation(s)
- Yuri Fujikura
- Healthy Food Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8566, Japan
| | - Keitaro Yamanouchi
- Department of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
- Corresponding author. Laboratory of Veterinary Physiology, Graduate School of Agricultural & Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
| | - Hidetoshi Sugihara
- Department of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | | | - Tomoki Abe
- Healthy Food Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8566, Japan
| | - Satoru Ato
- Healthy Food Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8566, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Katsutaka Oishi
- Healthy Food Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8566, Japan
- Department of Applied Biological Science, Graduate School of Science and Technology, Tokyo University of Science, Chiba, Noda, Japan
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Kashiwa, Japan
- School of Integrative and Global Majors (SIGMA), University of Tsukuba, Tsukuba, Ibaraki, Japan
- Corresponding author. Healthy Food Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan.
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23
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Immunoproteasome Inhibition Ameliorates Aged Dystrophic Mouse Muscle Environment. Int J Mol Sci 2022; 23:ijms232314657. [PMID: 36498987 PMCID: PMC9739773 DOI: 10.3390/ijms232314657] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/16/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
Muscle wasting is a major pathological feature observed in Duchenne muscular dystrophy (DMD) and is the result of the concerted effects of inflammation, oxidative stress and cell senescence. The inducible form of proteasome, or immunoproteasome (IP), is involved in all the above mentioned processes, regulating antigen presentation, cytokine production and immune cell response. IP inhibition has been previously shown to dampen the altered molecular, histological and functional features of 3-month-old mdx mice, the animal model for DMD. In this study, we described the role of ONX-0914, a selective inhibitor of the PSMB8 subunit of immunoproteasome, in ameliorating the pathological traits that could promote muscle wasting progression in older, 9-month-old mdx mice. ONX-0914 reduces the number of macrophages and effector memory T cells in muscle and spleen, while increasing the number of regulatory T cells. It modulates inflammatory markers both in skeletal and cardiac muscle, possibly counteracting heart remodeling and hypertrophy. Moreover, it buffers oxidative stress by improving mitochondrial efficiency. These changes ultimately lead to a marked decrease of fibrosis and, potentially, to more controlled myofiber degeneration/regeneration cycles. Therefore, ONX-0914 is a promising molecule that may slow down muscle mass loss, with relatively low side effects, in dystrophic patients with moderate to advanced disease.
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24
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Donandt T, Hintze S, Krause S, Wolf E, Schoser B, Walter MC, Meinke P. Isolation and Characterization of Primary DMD Pig Muscle Cells as an In Vitro Model for Preclinical Research on Duchenne Muscular Dystrophy. LIFE (BASEL, SWITZERLAND) 2022; 12:life12101668. [PMID: 36295103 PMCID: PMC9604785 DOI: 10.3390/life12101668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/26/2022] [Accepted: 10/12/2022] [Indexed: 11/16/2022]
Abstract
Duchenne muscular dystrophy (DMD) is the most frequent genetic myopathy in childhood and leads to progressive muscle atrophy, weakness, and premature death. So far, there is no curative treatment available. Therapeutic development from bench to bedside takes time, and promising therapies need to be tested in suitable preclinical animal models prior to clinical trials in DMD patients. Existing mouse and dog models are limited with regard to the comparability of the clinical phenotype and the underlying mutation. Therefore, our group established a tailored large animal model of DMD, the DMD pig, mirroring the human size, anatomy, and physiology. For testing novel approaches, we developed a corresponding in vitro model, facilitating preclinical testing for toxicity, dosing, and efficacy, which we describe here. We first extracted primary muscle cells from wild-type and DMD pigs of different age groups and characterized those cells, then improved their differentiation process for identification of dystrophin and utrophin in myotubes. Our porcine in vitro model represents an important step for the development of novel therapeutic approaches, which should be validated further to minimize the need for living animals for bioassays, and thereby support the '3R' (replace, reduce, refine) principle, as fewer animals have to be raised and treated for preclinical trials.
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Affiliation(s)
- Tina Donandt
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Stefan Hintze
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Sabine Krause
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Eckhard Wolf
- Chair for Molecular Animal Breeding and Biotechnology, Gene Center and Department of Veterinary Sciences, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Benedikt Schoser
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Maggie C. Walter
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
| | - Peter Meinke
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-Universität München, 81377 Munich, Germany
- Correspondence: ; Tel.: +49-(0)-89-2180-78279
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25
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Kihara Y, Tanaka Y, Ikeda M, Homma J, Takagi R, Ishigaki K, Yamanouchi K, Honda H, Nagata S, Yamato M. In utero transplantation of myoblasts and adipose-derived mesenchymal stem cells to murine models of Duchenne muscular dystrophy does not lead to engraftment and frequently results in fetal death. Regen Ther 2022; 21:486-493. [PMID: 36313392 PMCID: PMC9596598 DOI: 10.1016/j.reth.2022.10.003] [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: 08/23/2022] [Revised: 09/19/2022] [Accepted: 10/09/2022] [Indexed: 11/07/2022] Open
Abstract
Introduction Duchenne muscular dystrophy (DMD) is a progressive disease that leads to damage of muscle and myocardium due to genetic abnormalities in the dystrophin gene. In utero cell transplantation that might facilitate allogenic transplantation is worth considering to treat this disease. Methods We performed allogeneic in utero transplantation of GFP-positive myoblasts and adipose-derived mesenchymal stem cells into murine DMD model animals. The transplantation route in this study was fetal intraperitoneal transplantation and transplacental transplantation. Transplanted animals were examined at 4-weeks old by immunofluorescence staining and RT-qPCR. Results No GFP-positive cells were found by immunofluorescence staining of skeletal muscle and no GFP mRNA was detected by RT-qPCR in any animal, transplantation method and cell type. Compared with previous reports, myoblast transplantation exhibited an equivalent mortality rate, but adipose-derived stem cell (ASC) transplantation produced a higher mortality rate. Conclusions In utero transplantation of myoblasts or ASCs to murine models of DMD does not lead to engraftment and, in ASC transplantation primarily, frequently results in fetal death.
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Affiliation(s)
- Yuki Kihara
- Department of Pediatrics, Tokyo Women’s Medical University, School of Medicine, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666 Japan,Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666 Japan
| | - Yukie Tanaka
- Department of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Japan
| | - Masanari Ikeda
- Department of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Japan
| | - Jun Homma
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666 Japan
| | - Ryo Takagi
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666 Japan
| | - Keiko Ishigaki
- Department of Pediatrics, Tokyo Women’s Medical University, School of Medicine, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666 Japan
| | - Keitaro Yamanouchi
- Department of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Japan
| | - Hiroaki Honda
- Human Disease Models, Institute of Laboratory Animals, Tokyo Women's Medical University, Tokyo, Japan
| | - Satoru Nagata
- Department of Pediatrics, Tokyo Women’s Medical University, School of Medicine, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666 Japan
| | - Masayuki Yamato
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666 Japan,Corresponding author. Fax: +81 3-3359-6046.
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26
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Yamanouchi K, Tanaka Y, Ikeda M, Kato S, Okino R, Nishi H, Hakuno F, Takahashi SI, Chambers J, Matsuwaki T, Uchida K. Macroglossia and less advanced dystrophic change in the tongue muscle of the Duchenne muscular dystrophy rat. Skelet Muscle 2022; 12:24. [PMID: 36258243 PMCID: PMC9580129 DOI: 10.1186/s13395-022-00307-7] [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: 02/21/2022] [Accepted: 10/06/2022] [Indexed: 11/25/2022] Open
Abstract
Background Duchenne muscular dystrophy (DMD) is an X-linked muscle disease caused by a complete lack of dystrophin, which stabilizes the plasma membrane of myofibers. The orofacial function is affected in an advanced stage of DMD and this often leads to an eating disorder such as dysphagia. Dysphagia is caused by multiple etiologies including decreased mastication and swallowing. Therefore, preventing the functional declines of mastication and swallowing in DMD is important to improve the patient’s quality of life. In the present study, using a rat model of DMD we generated previously, we performed analyses on the masseter and tongue muscles, both are required for proper eating function. Methods Age-related changes of the masseter and tongue muscle of DMD rats were analyzed morphometrically, histologically, and immunohistochemically. Also, transcription of cellular senescent markers, and utrophin (Utrn), a functional analog of dystrophin, was examined. Results The masseter muscle of DMD rats showed progressive dystrophic changes as observed in their hindlimb muscle, accompanied by increased transcription of p16 and p19. On the other hand, the tongue of DMD rats showed macroglossia due to hypertrophy of myofibers with less dystrophic changes. Proliferative activity was preserved in the satellite cells from the tongue muscle but was perturbed severely in those from the masseter muscle. While Utrn transcription was increased in the masseter muscle of DMD rats compared to WT rats, probably due to a compensatory mechanism, its level in the tongue muscle was comparable between WT and DMD rats and was similar to that in the masseter muscle of DMD rats. Conclusions Muscular dystrophy is less advanced in the tongue muscle compared to the masseter muscle in the DMD rat. Supplementary Information The online version contains supplementary material available at 10.1186/s13395-022-00307-7.
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Affiliation(s)
- Keitaro Yamanouchi
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
| | - Yukie Tanaka
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Masanari Ikeda
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Shizuka Kato
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Ryosuke Okino
- Laboratory of Animal Cell Regulation, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Hiroki Nishi
- Laboratory of Animal Cell Regulation, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Fumihiko Hakuno
- Laboratory of Animal Cell Regulation, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Shin-Ichiro Takahashi
- Laboratory of Animal Cell Regulation, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - James Chambers
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Takashi Matsuwaki
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Kazuyuki Uchida
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
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27
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Cellular senescence and senolytics: the path to the clinic. Nat Med 2022; 28:1556-1568. [PMID: 35953721 DOI: 10.1038/s41591-022-01923-y] [Citation(s) in RCA: 267] [Impact Index Per Article: 133.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/28/2022] [Indexed: 01/10/2023]
Abstract
Interlinked and fundamental aging processes appear to be a root-cause contributor to many disorders and diseases. One such process is cellular senescence, which entails a state of cell cycle arrest in response to damaging stimuli. Senescent cells can arise throughout the lifespan and, if persistent, can have deleterious effects on tissue function due to the many proteins they secrete. In preclinical models, interventions targeting those senescent cells that are persistent and cause tissue damage have been shown to delay, prevent or alleviate multiple disorders. In line with this, the discovery of small-molecule senolytic drugs that selectively clear senescent cells has led to promising strategies for preventing or treating multiple diseases and age-related conditions in humans. In this Review, we outline the rationale for senescent cells as a therapeutic target for disorders across the lifespan and discuss the most promising strategies-including recent and ongoing clinical trials-for translating small-molecule senolytics and other senescence-targeting interventions into clinical use.
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28
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From cyclins to CDKIs: Cell cycle regulation of skeletal muscle stem cell quiescence and activation. Exp Cell Res 2022; 420:113275. [PMID: 35931143 DOI: 10.1016/j.yexcr.2022.113275] [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: 06/14/2021] [Revised: 06/12/2022] [Accepted: 07/03/2022] [Indexed: 11/22/2022]
Abstract
After extensive proliferation during development, the adult skeletal muscle cells remain outside the cell cycle, either as post-mitotic myofibers or as quiescent muscle stem cells (MuSCs). Despite its terminally differentiated state, adult skeletal muscle has a remarkable regeneration potential, driven by MuSCs. Upon injury, MuSC quiescence is reversed to support tissue growth and repair and it is re-established after the completion of muscle regeneration. The distinct cell cycle states and transitions observed in the different myogenic populations are orchestrated by elements of the cell cycle machinery. This consists of i) complexes of cyclins and Cyclin-Dependent Kinases (CDKs) that ensure cell cycle progression and ii) their negative regulators, the Cyclin-Dependent Kinase Inhibitors (CDKIs). In this review we discuss the roles of these factors in developmental and adult myogenesis, with a focus on CDKIs that have emerging roles in stem cell functions.
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Molecular Mechanisms of Inflammation in Sarcopenia: Diagnosis and Therapeutic Update. Cells 2022; 11:cells11152359. [PMID: 35954203 PMCID: PMC9367570 DOI: 10.3390/cells11152359] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 01/10/2023] Open
Abstract
Sarcopenia is generally an age-related condition that directly impacts the quality of life. It is also related to chronic diseases such as metabolic dysfunction associated with diabetes and obesity. This means that everyone will be vulnerable to sarcopenia at some point in their life. Research to find the precise molecular mechanisms implicated in this condition can increase knowledge for the better prevention, diagnosis, and treatment of sarcopenia. Our work gathered the most recent research regarding inflammation in sarcopenia and new therapeutic agents proposed to target its consequences in pyroptosis and cellular senescence. Finally, we compared dual X-ray absorptiometry (DXA), magnetic resonance imaging (MRI), and ultrasound (US) as imaging techniques to diagnose and follow up on sarcopenia, indicating their respective advantages and disadvantages. Our goal is for the scientific evidence presented here to help guide future research to understand the molecular mechanisms involved in sarcopenia, new treatment strategies, and their translation into clinical practice.
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30
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He J, Li X. Identification and Validation of Aging-Related Genes in Idiopathic Pulmonary Fibrosis. Front Genet 2022; 13:780010. [PMID: 35211155 PMCID: PMC8863089 DOI: 10.3389/fgene.2022.780010] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 01/19/2022] [Indexed: 12/13/2022] Open
Abstract
Aging plays a significant role in the occurrence and development of idiopathic pulmonary fibrosis (IPF). In this study, we aimed to identify and verify potential aging-associated genes involved in IPF using bioinformatic analysis. The mRNA expression profile dataset GSE150910 available in the Gene Expression Omnibus (GEO) database and R software were used to identify the differentially expressed aging-related genes involved in IPF. Hub gene expression was validated by other GEO datasets. Gene ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed on differentially expressed aging-related genes. Subsequently, aging-related genes were further screened using three techniques (least absolute shrinkage and selection operator (LASSO) regression, support vector machine, and random forest), and the receiver operating characteristic curves were plotted based on screening results. Finally, real-time quantitative polymerase chain reaction (qRT-PCR) was performed to verify the RNA expression of the six differentially expressed aging-related genes using the blood samples of patients with IPF and healthy individuals. Sixteen differentially expressed aging-related genes were detected, of which the expression of 12 were upregulated and four were downregulated. GO and KEGG enrichment analyses indicated the presence of several enriched terms related to senescence and apoptotic mitochondrial changes. Further screening by LASSO regression, support vector machine, and random forest identified six genes (IGF1, RET, IGFBP2, CDKN2A, JUN, and TFAP2A) that could serve as potential diagnostic biomarkers for IPF. Furthermore, qRT-PCR analysis indicated that among the above-mentioned six aging-related genes, only the expression levels of IGF1, RET, and IGFBP2 in patients with IPF and healthy individuals were consistent with the results of bioinformatic analysis. In conclusion, bioinformatics analysis identified 16 potential aging-related genes associated with IPF, and clinical sample validation suggested that among these, IGF1, RET, and IGFBP2 might play a role in the incidence and prognosis of IPF. Our findings may help understand the pathogenesis of IPF.
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Affiliation(s)
- Jie He
- Clinical Medical College of Chengdu Medical College, Chengdu, China.,Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Xiaoyan Li
- Clinical Medical College of Chengdu Medical College, Chengdu, China.,Department of Endocrinology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
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31
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Hu MC, Moe OW. Phosphate and Cellular Senescence. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1362:55-72. [PMID: 35288873 PMCID: PMC10513121 DOI: 10.1007/978-3-030-91623-7_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Cellular senescence is one type of permeant arrest of cell growth and one of increasingly recognized contributor to aging and age-associated disease. High phosphate and low Klotho individually and synergistically lead to age-related degeneration in multiple organs. Substantial evidence supports the causality of high phosphate in cellular senescence, and potential contribution to human aging, cancer, cardiovascular, kidney, neurodegenerative, and musculoskeletal diseases. Phosphate can induce cellular senescence both by direct phosphotoxicity, and indirectly through downregulation of Klotho and upregulation of plasminogen activator inhibitor-1. Restriction of dietary phosphate intake and blockage of intestinal absorption of phosphate help suppress cellular senescence. Supplementation of Klotho protein, cellular senescence inhibitor, and removal of senescent cells with senolytic agents are potential novel strategies to attenuate phosphate-induced cellular senescence, retard aging, and ameliorate age-associated, and phosphate-induced disorders.
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Affiliation(s)
- Ming Chang Hu
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Departments of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Orson W Moe
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Departments of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Departments of Physiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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32
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Raffaele M, Vinciguerra M. The costs and benefits of senotherapeutics for human health. THE LANCET. HEALTHY LONGEVITY 2022; 3:e67-e77. [PMID: 36098323 DOI: 10.1016/s2666-7568(21)00300-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/09/2021] [Accepted: 11/21/2021] [Indexed: 12/24/2022] Open
Abstract
Cellular senescence is a major contributor to age-related diseases in humans; however, it also has a beneficial role in physiological and pathological processes, including wound healing, host immunity, and tumour suppression. Reducing the burden of cell senescence in animal models of cardiometabolic disorders, inflammatory conditions, neurodegenerative diseases, and cancer using pharmaceutical approaches that selectively target senescent cells (ie, senolytics) or that suppress senescence-associated secretory phenotype (ie, senomorphics) holds great promise for the management of chronic age-associated conditions. Although studies have provided evidence that senolytics or senomorphics are effective at decreasing the number of senescent cells in humans, the short-term and long-term side-effects of these therapies are largely unknown. In this Review, we systematically discuss the senolytics and senomorphics that have been investigated in clinical trials or have been used off-label, presenting their various adverse effects. Despite the potential of senotherapeutics to transform anti-ageing medicine, a cautionary approach regarding unwanted dose-dependent side-effects should be adopted.
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Affiliation(s)
- Marco Raffaele
- International Clinical Research Center, St Anne's University Hospital, Brno, Czech Republic
| | - Manlio Vinciguerra
- International Clinical Research Center, St Anne's University Hospital, Brno, Czech Republic; Division of Medicine, University College London, London, UK; Research Institute of the Medical University of Varna, Varna, Bulgaria.
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33
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Englund DA, Zhang X, Aversa Z, LeBrasseur NK. Skeletal muscle aging, cellular senescence, and senotherapeutics: Current knowledge and future directions. Mech Ageing Dev 2021; 200:111595. [PMID: 34742751 PMCID: PMC8627455 DOI: 10.1016/j.mad.2021.111595] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 12/16/2022]
Abstract
Cellular senescence is a state of cell cycle arrest induced by several forms of metabolic stress. Senescent cells accumulate with advancing age and have a distinctive phenotype, characterized by profound chromatin alterations and a robust senescence-associated secretory phenotype (SASP) that exerts negative effects on tissue health, both locally and systemically. In preclinical models, pharmacological agents that eliminate senescent cells (senotherapeutics) restore health and youthful properties in multiple tissues. To date, however, very little is understood about the vulnerability of terminally-differentiated skeletal muscle fibers and the resident mononuclear cells that populate the interstitial microenvironment of skeletal muscle to senescence, and their contribution to the onset and progression of skeletal muscle loss and dysfunction with aging. Scientific advances in these areas have the potential to highlight new therapeutic approaches to optimize late-life muscle health. To this end, this review highlights the current evidence and the key questions that need to be addressed to advance the field's understanding of cellular senescence as a mediator of skeletal muscle aging and the potential for emerging senescent cell-targeting therapies to counter age-related deficits in muscle mass, strength, and function. This article is part of the Special Issue - Senolytics - Edited by Joao Passos and Diana Jurk.
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Affiliation(s)
- Davis A Englund
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Xu Zhang
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Zaira Aversa
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Nathan K LeBrasseur
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA.
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34
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Gao Z, Lu A, Daquinag AC, Yu Y, Huard M, Tseng C, Gao X, Huard J, Kolonin MG. Partial Ablation of Non-Myogenic Progenitor Cells as a Therapeutic Approach to Duchenne Muscular Dystrophy. Biomolecules 2021; 11:biom11101519. [PMID: 34680151 PMCID: PMC8534118 DOI: 10.3390/biom11101519] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/27/2021] [Accepted: 10/12/2021] [Indexed: 01/04/2023] Open
Abstract
Duchenne muscular dystrophy (DMD), caused by the loss of dystrophin, remains incurable. Reduction in muscle regeneration with DMD is associated with the accumulation of fibroadipogenic progenitors (FAPs) differentiating into myofibroblasts and leading to a buildup of the collagenous tissue aggravating DMD pathogenesis. Mesenchymal stromal cells (MSCs) expressing platelet-derived growth factor receptors (PDGFRs) are activated in muscle during DMD progression and give rise to FAPs promoting DMD progression. Here, we hypothesized that muscle dysfunction in DMD could be delayed via genetic or pharmacologic depletion of MSC-derived FAPs. In this paper, we test this hypothesis in dystrophin-deficient mdx mice. To reduce fibro/adipose infiltration and potentiate muscle progenitor cells (MPCs), we used a model for inducible genetic ablation of proliferating MSCs via a suicide transgene, viral thymidine kinase (TK), expressed under the Pdgfrb promoter. We also tested if MSCs from fat tissue, the adipose stromal cells (ASCs), contribute to FAPs and could be targeted in DMD. Pharmacological ablation was performed with a hunter-killer peptide D-CAN targeting ASCs. MSC depletion with these approaches resulted in increased endurance, measured based on treadmill running, as well as grip strength, without significantly affecting fibrosis. Although more research is needed, our results suggest that depletion of pathogenic MSCs mitigates muscle damage and delays the loss of muscle function in mouse models of DMD.
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MESH Headings
- Animals
- Cell Differentiation/genetics
- Cell Proliferation/genetics
- Disease Models, Animal
- Dystrophin/genetics
- Humans
- Mesenchymal Stem Cells/metabolism
- Mice
- Mice, Inbred mdx
- Muscle, Skeletal/growth & development
- Muscle, Skeletal/metabolism
- Muscle, Skeletal/pathology
- Muscular Dystrophy, Duchenne/genetics
- Muscular Dystrophy, Duchenne/pathology
- Muscular Dystrophy, Duchenne/therapy
- Myofibroblasts/cytology
- Myofibroblasts/metabolism
- Promoter Regions, Genetic/genetics
- Receptors, Platelet-Derived Growth Factor/genetics
- Stem Cells/cytology
- Stem Cells/metabolism
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Affiliation(s)
- Zhanguo Gao
- Institute of Molecular Medicine, The University of Texas Health Science Center, Houston, TX 77030, USA; (Z.G.); (A.C.D.); (Y.Y.)
| | - Aiping Lu
- Center for Regenerative Sports Medicine, Steadman Philippon Research Institute, Vail, CO 81657, USA; (A.L.); (M.H.); (X.G.)
| | - Alexes C. Daquinag
- Institute of Molecular Medicine, The University of Texas Health Science Center, Houston, TX 77030, USA; (Z.G.); (A.C.D.); (Y.Y.)
| | - Yongmei Yu
- Institute of Molecular Medicine, The University of Texas Health Science Center, Houston, TX 77030, USA; (Z.G.); (A.C.D.); (Y.Y.)
| | - Matthieu Huard
- Center for Regenerative Sports Medicine, Steadman Philippon Research Institute, Vail, CO 81657, USA; (A.L.); (M.H.); (X.G.)
| | - Chieh Tseng
- M.D. Anderson Cancer Center, The University of Texas Health Science Center, Houston, TX 77030, USA;
| | - Xueqin Gao
- Center for Regenerative Sports Medicine, Steadman Philippon Research Institute, Vail, CO 81657, USA; (A.L.); (M.H.); (X.G.)
| | - Johnny Huard
- Center for Regenerative Sports Medicine, Steadman Philippon Research Institute, Vail, CO 81657, USA; (A.L.); (M.H.); (X.G.)
- Correspondence: (J.H.); (M.G.K.); Tel.: +970-479-1595 (J.H.); +713-500-3146 (M.G.K.)
| | - Mikhail G. Kolonin
- Institute of Molecular Medicine, The University of Texas Health Science Center, Houston, TX 77030, USA; (Z.G.); (A.C.D.); (Y.Y.)
- Correspondence: (J.H.); (M.G.K.); Tel.: +970-479-1595 (J.H.); +713-500-3146 (M.G.K.)
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35
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Saito Y, Chikenji TS. Diverse Roles of Cellular Senescence in Skeletal Muscle Inflammation, Regeneration, and Therapeutics. Front Pharmacol 2021; 12:739510. [PMID: 34552495 PMCID: PMC8450382 DOI: 10.3389/fphar.2021.739510] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 08/23/2021] [Indexed: 12/19/2022] Open
Abstract
Skeletal muscle undergoes vigorous tissue remodeling after injury. However, aging, chronic inflammatory diseases, sarcopenia, and neuromuscular disorders cause muscle loss and degeneration, resulting in muscular dysfunction. Cellular senescence, a state of irreversible cell cycle arrest, acts during normal embryonic development and remodeling after tissue damage; when these processes are complete, the senescent cells are eliminated. However, the accumulation of senescent cells is a hallmark of aging tissues or pathological contexts and may lead to progressive tissue degeneration. The mechanisms responsible for the effects of senescent cells have not been fully elucidated. Here, we review current knowledge about the beneficial and detrimental effects of senescent cells in tissue repair, regeneration, aging, and age-related disease, especially in skeletal muscle. We also discuss how senescence of muscle stem cells and muscle-resident fibro-adipogenic progenitors affects muscle pathologies or regeneration, and consider the possibility that immunosenescence leads to muscle pathogenesis. Finally, we explore senotherapy, the therapeutic targeting of senescence to treat age-related disease, from the standpoint of improving muscle regeneration.
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Affiliation(s)
- Yuki Saito
- Department of Anatomy, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takako S Chikenji
- Department of Anatomy, Sapporo Medical University School of Medicine, Sapporo, Japan.,Department of Health Sciences, School of Medicine, Hokkaido University, Sapporo, Japan
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36
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TERAMOTO N, IKEDA M, SUGIHARA H, SHIGA T, MATSUWAKI T, NISHIHARA M, UCHIDA K, YAMANOUCHI K. Loss of p16/Ink4a drives high frequency of rhabdomyosarcoma in a rat model of Duchenne muscular dystrophy. J Vet Med Sci 2021; 83:1416-1424. [PMID: 34334511 PMCID: PMC8498826 DOI: 10.1292/jvms.21-0243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 07/20/2021] [Indexed: 11/22/2022] Open
Abstract
Rhabdomyosarcoma (RMS) is an aggressive type of soft tissue sarcoma, and pleomorphic RMS is a rare subtype of RMS found in adult. p16 is a tumor suppressor which inhibits cell cycle. In human RMS, p16 gene is frequently deleted, but p16-null mice do not develop RMS. We reported that genetic ablation of p16 by the crossbreeding of p16 knock-out rats (p16-KO rats) improved the dystrophic phenotype of a rat model of Duchenne muscular dystrophy (Dmd-KO rats). However, p16/Dmd double knock-out rats (dKO rats) unexpectedly developed sarcoma. In the present study, we raised p16-KO, Dmd-KO, and dKO rats until 11 months of age. Twelve out of 22 dKO rats developed pleomorphic RMS after 9 months of age, while none of p16-KO rats and Dmd-KO rats developed tumor. The neoplasms were connected to skeletal muscle tissue with indistinct borders and characterized by diffuse proliferation of pleomorphic cells which had eosinophilic cytoplasm and atypical nuclei with anisokaryosis. For almost all cases, the tumor cells immunohistochemically expressed myogenic markers including desmin, MyoD, and myogenin. The single cell cloning from tumor primary cells gained 20 individual Pax7-negative MyoD-positive RMS cell clones. Our results demonstrated that double knock-out of p16 and dystrophin in rats leads to the development of pleomorphic RMS, providing an animal model that may be useful to study the developmental mechanism of pleomorphic RMS.
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Affiliation(s)
- Naomi TERAMOTO
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Masanari IKEDA
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Hidetoshi SUGIHARA
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Takanori SHIGA
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Takashi MATSUWAKI
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Masugi NISHIHARA
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Kazuyuki UCHIDA
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Keitaro YAMANOUCHI
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
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37
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Fujikura Y, Sugihara H, Hatakeyama M, Oishi K, Yamanouchi K. Ketogenic diet with medium-chain triglycerides restores skeletal muscle function and pathology in a rat model of Duchenne muscular dystrophy. FASEB J 2021; 35:e21861. [PMID: 34416029 DOI: 10.1096/fj.202100629r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/16/2021] [Accepted: 08/04/2021] [Indexed: 12/28/2022]
Abstract
Duchenne muscular dystrophy (DMD) is an intractable genetic disease associated with progressive skeletal muscle weakness and degeneration. Recently, it was reported that intraperitoneal injections of ketone bodies partially ameliorated muscular dystrophy by increasing satellite cell (SC) proliferation. Here, we evaluated whether a ketogenic diet (KD) with medium-chain triglycerides (MCT-KD) could alter genetically mutated DMD in model rats. We found that the MCT-KD significantly increased muscle strength and fiber diameter in these rats. The MCT-KD significantly suppressed the key features of DMD, namely, muscle necrosis, inflammation, and subsequent fibrosis. Immunocytochemical analysis revealed that the MCT-KD promoted the proliferation of muscle SCs, suggesting enhanced muscle regeneration. The muscle strength of DMD model rats fed with MCT-KD was significantly improved even at the age of 9 months. Our findings suggested that the MCT-KD ameliorates muscular dystrophy by inhibiting myonecrosis and promoting the proliferation of muscle SCs. As far as we can ascertain, this is the first study to apply a functional diet as therapy for DMD in experimental animals. Further studies are needed to elucidate the underlying mechanisms of the MCT-KD-induced improvement of DMD.
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Affiliation(s)
- Yuri Fujikura
- Healthy Food Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Hidetoshi Sugihara
- Department of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Japan
| | | | - Katsutaka Oishi
- Healthy Food Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.,Department of Applied Biological Science, Graduate School of Science and Technology, Tokyo University of Science, Noda, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan.,School of Integrative and Global Majors (SIGMA), University of Tsukuba, Tsukuba, Japan
| | - Keitaro Yamanouchi
- Department of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Japan
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38
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Swiderski K, Lynch GS. Murine models of Duchenne muscular dystrophy: is there a best model? Am J Physiol Cell Physiol 2021; 321:C409-C412. [PMID: 34260298 DOI: 10.1152/ajpcell.00212.2021] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 07/07/2021] [Indexed: 11/22/2022]
Affiliation(s)
- Kristy Swiderski
- Centre for Muscle Research, Department of Anatomy and Physiology, School of Biomedical Sciences, Faculty of Medicine, Dentistry, and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Gordon S Lynch
- Centre for Muscle Research, Department of Anatomy and Physiology, School of Biomedical Sciences, Faculty of Medicine, Dentistry, and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
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39
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Yamanouchi K, Nakamura K, Takeuchi S, Hosoyama T, Matsuwaki T, Nishihara M. Suppression of MyoD induces spontaneous adipogenesis in skeletal muscle progenitor cell culture. Anim Sci J 2021; 92:e13573. [PMID: 34231933 DOI: 10.1111/asj.13573] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/16/2021] [Accepted: 05/20/2021] [Indexed: 12/13/2022]
Abstract
The degree of intramuscular adipose tissue accumulation is one of the factors affecting meat quality. Accumulation of adipocytes is also observed under the pathological condition of skeletal muscle such as muscular dystrophy and sarcopenia. The origin of adipocytes seen in skeletal muscle is mesenchymal progenitor cells that can give rise to both adipocytes and fibroblasts. In the present study, we demonstrated that siRNA-mediated suppression of MyoD expression in rat skeletal muscle progenitor cell culture, which comprises both myogenic satellite cells and mesenchymal progenitor cells, resulted in diminished myotube formation and an unexpected spontaneous appearance of white adipocytes. Suppressing myomaker expression also resulted in complete absence of myotube formation without reducing MyoD expression, but no adipogenesis was seen in this scenario, indicating that decline in MyoD expression rather than decreased myotube formation is necessary to induce adipogenesis. In addition, spontaneous adipogenesis induced by suppressing MyoD expression in culture was inhibited by the conditioned medium from control culture, indicating that anti-adipogenic factor(s) are secreted from MyoD-positive myogenic cells. These results indicate the presence of regulatory mechanism on adipogenesis by myogenic cells.
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Affiliation(s)
- Keitaro Yamanouchi
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Katsuyuki Nakamura
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Shiho Takeuchi
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Tohru Hosoyama
- Department of Musculoskeletal Disease, The Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Takashi Matsuwaki
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Masugi Nishihara
- Laboratory of Veterinary Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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Senolytics for Cancer Therapy: Is All That Glitters Really Gold? Cancers (Basel) 2021; 13:cancers13040723. [PMID: 33578753 PMCID: PMC7916462 DOI: 10.3390/cancers13040723] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Senescence is an essential component of tumor cell biology and is a primary cell stress response to therapy. While the long-term impact of senescence in cancer therapy is not yet fully understood, the use of senolytics, drugs that selectively kill senescent cells, is an area of active investigation in cancer treatment. Several challenges and unanswered questions have arisen from the current preclinical literature, indicating the need to re-evaluate some of the basic premises and experimental approaches, as well as the potential utility for translating to the clinic the application of senolytics as adjuvants to current cancer therapy. Abstract Senolytics represent a group of mechanistically diverse drugs that can eliminate senescent cells, both in tumors and in several aging-related pathologies. Consequently, senolytic use has been proposed as a potential adjuvant approach to improve the response to senescence-inducing conventional and targeted cancer therapies. Despite the unequivocal promise of senolytics, issues of universality, selectivity, resistance, and toxicity remain to be further clarified. In this review, we attempt to summarize and analyze the current preclinical literature involving the use of senolytics in senescent tumor cell models, and to propose tenable solutions and future directions to improve the understanding and use of this novel class of drugs.
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