1
|
Wang T, Zhou D, Hong Z. Adipose tissue in older individuals: a contributing factor to sarcopenia. Metabolism 2024; 160:155998. [PMID: 39128607 DOI: 10.1016/j.metabol.2024.155998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 08/05/2024] [Accepted: 08/06/2024] [Indexed: 08/13/2024]
Abstract
Sarcopenia is a geriatric syndrome characterized by a functional decline in muscle. The prevalence of sarcopenia increases with natural aging, becoming a serious health problem among elderly individuals. Therefore, understanding the pathology of sarcopenia is critical for inhibiting age-related alterations and promoting health and longevity in elderly individuals. The development of sarcopenia may be influenced by interactions between visceral and subcutaneous adipose tissue and skeletal muscle, particularly under conditions of chronic low-grade inflammation and metabolic dysfunction. This hypothesis is supported by the following observations: (i) accumulation of senescent cells in both adipose tissue and skeletal muscle with age; (ii) gut dysbiosis, characterized by an imbalance in gut microbial communities as the main trigger for inflammation, sarcopenia, and aged adipose tissue; and (iii) microbial dysbiosis, which could impact the onset or progression of a senescent state. Moreover, adipose tissue acts as an endocrine organ, releasing molecules that participate in intricate communication networks between organs. Our discussion focuses on novel adipokines and their role in regulating adipose tissue and muscle, particularly those influenced by aging and obesity, emphasizing their contributions to disease development. On the basis of these findings, we propose that age-related adipose tissue and sarcopenia are disorders characterized by chronic inflammation and metabolic dysregulation. Finally, we explore new potential therapeutic strategies involving specialized proresolving mediator (SPM) G protein-coupled receptor (GPCR) agonists, non-SPM GPCR agonists, transient receptor potential (TRP) channels, antidiabetic drugs in conjunction with probiotics and prebiotics, and compounds designed to target senescent cells and mitigate their pro-inflammatory activity.
Collapse
Affiliation(s)
- Tiantian Wang
- Department of Neurology, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan, China; Institute of Brain Science and Brain-inspired Technology of West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Neurology, Chengdu Shangjin Nanfu Hospital, Chengdu, Sichuan, China.
| | - Dong Zhou
- Department of Neurology, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan, China; Institute of Brain Science and Brain-inspired Technology of West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Neurology, Chengdu Shangjin Nanfu Hospital, Chengdu, Sichuan, China
| | - Zhen Hong
- Department of Neurology, National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, Chengdu, Sichuan, China; Institute of Brain Science and Brain-inspired Technology of West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Neurology, Chengdu Shangjin Nanfu Hospital, Chengdu, Sichuan, China.
| |
Collapse
|
2
|
Franco-Obregón A, Tai YK. Are Aminoglycoside Antibiotics TRPing Your Metabolic Switches? Cells 2024; 13:1273. [PMID: 39120305 PMCID: PMC11311832 DOI: 10.3390/cells13151273] [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: 07/03/2024] [Revised: 07/26/2024] [Accepted: 07/27/2024] [Indexed: 08/10/2024] Open
Abstract
Transient receptor potential (TRP) channels are broadly implicated in the developmental programs of most tissues. Amongst these tissues, skeletal muscle and adipose are noteworthy for being essential in establishing systemic metabolic balance. TRP channels respond to environmental stimuli by supplying intracellular calcium that instigates enzymatic cascades of developmental consequence and often impinge on mitochondrial function and biogenesis. Critically, aminoglycoside antibiotics (AGAs) have been shown to block the capacity of TRP channels to conduct calcium entry into the cell in response to a wide range of developmental stimuli of a biophysical nature, including mechanical, electromagnetic, thermal, and chemical. Paradoxically, in vitro paradigms commonly used to understand organismal muscle and adipose development may have been led astray by the conventional use of streptomycin, an AGA, to help prevent bacterial contamination. Accordingly, streptomycin has been shown to disrupt both in vitro and in vivo myogenesis, as well as the phenotypic switch of white adipose into beige thermogenic status. In vivo, streptomycin has been shown to disrupt TRP-mediated calcium-dependent exercise adaptations of importance to systemic metabolism. Alternatively, streptomycin has also been used to curb detrimental levels of calcium leakage into dystrophic skeletal muscle through aberrantly gated TRPC1 channels that have been shown to be involved in the etiology of X-linked muscular dystrophies. TRP channels susceptible to AGA antagonism are critically involved in modulating the development of muscle and adipose tissues that, if administered to behaving animals, may translate to systemwide metabolic disruption. Regenerative medicine and clinical communities need to be made aware of this caveat of AGA usage and seek viable alternatives, to prevent contamination or infection in in vitro and in vivo paradigms, respectively.
Collapse
Affiliation(s)
- Alfredo Franco-Obregón
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- Institute of Health Technology and Innovation (iHealthtech), National University of Singapore, Singapore 117599, Singapore
- BICEPS Lab (Biolonic Currents Electromagnetic Pulsing Systems), National University of Singapore, Singapore 117599, Singapore
- NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- Competence Center for Applied Biotechnology and Molecular Medicine, University of Zürich, 8057 Zürich, Switzerland
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
| | - Yee Kit Tai
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- Institute of Health Technology and Innovation (iHealthtech), National University of Singapore, Singapore 117599, Singapore
- BICEPS Lab (Biolonic Currents Electromagnetic Pulsing Systems), National University of Singapore, Singapore 117599, Singapore
- NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
| |
Collapse
|
3
|
De Masi A, Zanou N, Strotjohann K, Lee D, Lima TI, Li X, Jeon J, Place N, Jung H, Auwerx J. Cyclo His-Pro Attenuates Muscle Degeneration in Murine Myopathy Models. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305927. [PMID: 38728626 PMCID: PMC11267275 DOI: 10.1002/advs.202305927] [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] [Received: 08/21/2023] [Revised: 03/11/2024] [Indexed: 05/12/2024]
Abstract
Among the inherited myopathies, a group of muscular disorders characterized by structural and metabolic impairments in skeletal muscle, Duchenne muscular dystrophy (DMD) stands out for its devastating progression. DMD pathogenesis is driven by the progressive degeneration of muscle fibers, resulting in inflammation and fibrosis that ultimately affect the overall muscle biomechanics. At the opposite end of the spectrum of muscle diseases, age-related sarcopenia is a common condition that affects an increasing proportion of the elderly. Although characterized by different pathological mechanisms, DMD and sarcopenia share the development of progressive muscle weakness and tissue inflammation. Here, the therapeutic effects of Cyclo Histidine-Proline (CHP) against DMD and sarcopenia are evaluated. In the mdx mouse model of DMD, it is shown that CHP restored muscle contractility and force production, accompanied by the reduction of fibrosis and inflammation in skeletal muscle. CHP furthermore prevented the development of cardiomyopathy and fibrosis in the diaphragm, the two leading causes of death for DMD patients. CHP also attenuated muscle atrophy and functional deterioration in a mouse model of age-related sarcopenia. These findings from two different models of muscle dysfunction hence warrant further investigation into the effects of CHP on muscle pathologies in animal models and eventually in patients.
Collapse
Affiliation(s)
- Alessia De Masi
- Laboratory of Integrative Systems PhysiologyInstitute of BioengineeringÉcole Polytechnique Fédérale de LausanneLausanne1015Switzerland
| | - Nadège Zanou
- Institute of Sport Sciences and Department of Biomedical SciencesFaculty of Biology‐MedicineUniversity of LausanneLausanne1015Switzerland
| | - Keno Strotjohann
- Laboratory of Integrative Systems PhysiologyInstitute of BioengineeringÉcole Polytechnique Fédérale de LausanneLausanne1015Switzerland
| | - Dohyun Lee
- R&D CenterNovMetaPharma Co., LtdPohang37668South Korea
| | - Tanes I. Lima
- Laboratory of Integrative Systems PhysiologyInstitute of BioengineeringÉcole Polytechnique Fédérale de LausanneLausanne1015Switzerland
| | - Xiaoxu Li
- Laboratory of Integrative Systems PhysiologyInstitute of BioengineeringÉcole Polytechnique Fédérale de LausanneLausanne1015Switzerland
| | - Jongsu Jeon
- R&D CenterNovMetaPharma Co., LtdPohang37668South Korea
| | - Nicolas Place
- Institute of Sport Sciences and Department of Biomedical SciencesFaculty of Biology‐MedicineUniversity of LausanneLausanne1015Switzerland
| | - Hoe‐Yune Jung
- R&D CenterNovMetaPharma Co., LtdPohang37668South Korea
- School of Interdisciplinary Bioscience and BioengineeringPohang University of Science and Technology (POSTECH)Pohang37673South Korea
| | - Johan Auwerx
- Laboratory of Integrative Systems PhysiologyInstitute of BioengineeringÉcole Polytechnique Fédérale de LausanneLausanne1015Switzerland
| |
Collapse
|
4
|
Mirzoev TM. The emerging role of Piezo1 channels in skeletal muscle physiology. Biophys Rev 2023; 15:1171-1184. [PMID: 37975010 PMCID: PMC10643716 DOI: 10.1007/s12551-023-01154-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/25/2023] [Indexed: 11/19/2023] Open
Abstract
Piezo1 channels are mechanically activated (MA) cation channels that are involved in sensing of various mechanical perturbations, such as membrane stretch and shear stress, and play a crucial role in cell mechanotransduction. In response to mechanical stimuli, these channels open up and allow cations to travel into the cell and induce biochemical reactions that can change the cell's metabolism and function. Skeletal muscle cells/fibers inherently depend upon mechanical cues in the form of fluid shear stress and contractions (physical exercise). For example, an exposure of skeletal muscles to chronic mechanical loading leads to increased anabolism and fiber hypertrophy, while prolonged mechanical unloading results in muscle atrophy. MA Piezo1 channels have recently emerged as key mechanosensors that are capable of linking mechanical signals and intramuscular signaling in skeletal muscle cells/fibers. This review will summarize the emerging role of Piezo1 channels in the development and regeneration of skeletal muscle tissue as well as in the regulation of skeletal muscle atrophy. In addition, an overview of potential Piezo1-related signaling pathways underlying anabolic and catabolic processes will be provided. A better understanding of Piezo1's role in skeletal muscle mechanotransduction may represent an important basis for the development of therapeutic strategies for maintaining muscle functions under disuse conditions and in some disease states.
Collapse
Affiliation(s)
- Timur M. Mirzoev
- Myology Laboratory, Institute of Biomedical Problems RAS, Moscow, Russia
| |
Collapse
|
5
|
Franco-Obregón A, Tai YK, Wu KY, Iversen JN, Wong CJK. The Developmental Implications of Muscle-Targeted Magnetic Mitohormesis: A Human Health and Longevity Perspective. Bioengineering (Basel) 2023; 10:956. [PMID: 37627841 PMCID: PMC10451851 DOI: 10.3390/bioengineering10080956] [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: 07/14/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Muscle function reflects muscular mitochondrial status, which, in turn, is an adaptive response to physical activity, representing improvements in energy production for de novo biosynthesis or metabolic efficiency. Differences in muscle performance are manifestations of the expression of distinct contractile-protein isoforms and of mitochondrial-energy substrate utilization. Powerful contractures require immediate energy production from carbohydrates outside the mitochondria that exhaust rapidly. Sustained muscle contractions require aerobic energy production from fatty acids by the mitochondria that is slower and produces less force. These two patterns of muscle force generation are broadly classified as glycolytic or oxidative, respectively, and require disparate levels of increased contractile or mitochondrial protein production, respectively, to be effectively executed. Glycolytic muscle, hence, tends towards fibre hypertrophy, whereas oxidative fibres are more disposed towards increased mitochondrial content and efficiency, rather than hypertrophy. Although developmentally predetermined muscle classes exist, a degree of functional plasticity persists across all muscles post-birth that can be modulated by exercise and generally results in an increase in the oxidative character of muscle. Oxidative muscle is most strongly correlated with organismal metabolic balance and longevity because of the propensity of oxidative muscle for fatty-acid oxidation and associated anti-inflammatory ramifications which occur at the expense of glycolytic-muscle development and hypertrophy. This muscle-class size disparity is often at odds with common expectations that muscle mass should scale positively with improved health and longevity. Brief magnetic-field activation of the muscle mitochondrial pool has been shown to recapitulate key aspects of the oxidative-muscle phenotype with similar metabolic hallmarks. This review discusses the common genetic cascades invoked by endurance exercise and magnetic-field therapy and the potential physiological differences with regards to human health and longevity. Future human studies examining the physiological consequences of magnetic-field therapy are warranted.
Collapse
Affiliation(s)
- Alfredo Franco-Obregón
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore; (K.Y.W.); (J.N.I.); (C.J.K.W.)
- Institute of Health Technology and Innovation (iHealthtech), National University of Singapore, Singapore 117599, Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory (BICEPS), National University of Singapore, Singapore 117599, Singapore
- NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
- Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- Nanomedicine Translational Research Programme, Centre for NanoMedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117544, Singapore
| | - Yee Kit Tai
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore; (K.Y.W.); (J.N.I.); (C.J.K.W.)
- Institute of Health Technology and Innovation (iHealthtech), National University of Singapore, Singapore 117599, Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory (BICEPS), National University of Singapore, Singapore 117599, Singapore
- NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
| | - Kwan Yu Wu
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore; (K.Y.W.); (J.N.I.); (C.J.K.W.)
- Institute of Health Technology and Innovation (iHealthtech), National University of Singapore, Singapore 117599, Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory (BICEPS), National University of Singapore, Singapore 117599, Singapore
- Faculty of Medicine, Utrecht University, 3584 CS Utrecht, The Netherlands
| | - Jan Nikolas Iversen
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore; (K.Y.W.); (J.N.I.); (C.J.K.W.)
- Institute of Health Technology and Innovation (iHealthtech), National University of Singapore, Singapore 117599, Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory (BICEPS), National University of Singapore, Singapore 117599, Singapore
| | - Craig Jun Kit Wong
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore; (K.Y.W.); (J.N.I.); (C.J.K.W.)
- Institute of Health Technology and Innovation (iHealthtech), National University of Singapore, Singapore 117599, Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory (BICEPS), National University of Singapore, Singapore 117599, Singapore
| |
Collapse
|
6
|
Mechanotransduction for Muscle Protein Synthesis via Mechanically Activated Ion Channels. Life (Basel) 2023; 13:life13020341. [PMID: 36836698 PMCID: PMC9962945 DOI: 10.3390/life13020341] [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: 01/03/2023] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 02/03/2023] Open
Abstract
Cell mechanotransduction, the ability to detect physical forces and convert them into a series of biochemical events, is important for a wide range of physiological processes. Cells express an array of mechanosensors transducing physical forces into intracellular signaling cascades, including ion channels. Ion channels that can be directly activated by mechanical cues are known as mechanically activated (MA), or stretch-activated (SA), channels. In response to repeated exposures to mechanical stimulation in the form of resistance training, enhanced protein synthesis and fiber hypertrophy are elicited in skeletal muscle, whereas a lack of mechanical stimuli due to inactivity/mechanical unloading leads to reduced muscle protein synthesis and fiber atrophy. To date, the role of MA channels in the transduction of mechanical load to intracellular signaling pathways regulating muscle protein synthesis is poorly described. This review article will discuss MA channels in striated muscle, their regulation, and putative roles in the anabolic processes in muscle cells/fibers in response to mechanical stimuli.
Collapse
|
7
|
Laurila PP, Wohlwend M, Imamura de Lima T, Luan P, Herzig S, Zanou N, Crisol B, Bou-Sleiman M, Porcu E, Gallart-Ayala H, Handzlik MK, Wang Q, Jain S, D'Amico D, Salonen M, Metallo CM, Kutalik Z, Eichmann TO, Place N, Ivanisevic J, Lahti J, Eriksson JG, Auwerx J. Sphingolipids accumulate in aged muscle, and their reduction counteracts sarcopenia. NATURE AGING 2022; 2:1159-1175. [PMID: 37118545 DOI: 10.1038/s43587-022-00309-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 10/07/2022] [Indexed: 04/30/2023]
Abstract
Age-related muscle dysfunction and sarcopenia are major causes of physical incapacitation in older adults and currently lack viable treatment strategies. Here we find that sphingolipids accumulate in mouse skeletal muscle upon aging and that both genetic and pharmacological inhibition of sphingolipid synthesis prevent age-related decline in muscle mass while enhancing strength and exercise capacity. Inhibition of sphingolipid synthesis confers increased myogenic potential and promotes protein synthesis. Within the sphingolipid pathway, we show that accumulation of dihydroceramides is the culprit disturbing myofibrillar homeostasis. The relevance of sphingolipid pathways in human aging is demonstrated in two cohorts, the UK Biobank and Helsinki Birth Cohort Study in which gene expression-reducing variants of SPTLC1 and DEGS1 are associated with improved and reduced fitness of older individuals, respectively. These findings identify sphingolipid synthesis inhibition as an attractive therapeutic strategy for age-related sarcopenia and co-occurring pathologies.
Collapse
Affiliation(s)
- Pirkka-Pekka Laurila
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland.
| | - Martin Wohlwend
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Tanes Imamura de Lima
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Peiling Luan
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Sébastien Herzig
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Nadège Zanou
- Institute of Sport Sciences and Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland
| | - Barbara Crisol
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Maroun Bou-Sleiman
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Eleonora Porcu
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
| | - Hector Gallart-Ayala
- Metabolomics Platform, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Michal K Handzlik
- Molecular and Cellular Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Qi Wang
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Suresh Jain
- Intonation Research Laboratories, Secunderabad, India
| | - Davide D'Amico
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Minna Salonen
- Chronic Disease Prevention Unit, National Institute for Health and Welfare, Helsinki, Finland
| | - Christian M Metallo
- Molecular and Cellular Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Zoltan Kutalik
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- University Center for Primary Care and Public Health, University of Lausanne, Lausanne, Switzerland
| | - Thomas O Eichmann
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
- Center for Explorative Lipidomics, BioTechMed-Graz, Graz, Austria
| | - Nicolas Place
- Institute of Sport Sciences and Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland
| | - Julijana Ivanisevic
- Metabolomics Platform, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Jari Lahti
- Department of Psychology and Logopedics, University of Helsinki, Helsinki, Finland
- Turku Institute for Advanced Studies, University of Turku, Turku, Finland
| | - Johan G Eriksson
- Department of General Practice and Primary Health Care, University of Helsinki and Helsinki University Hospital, University of Helsinki, Helsinki, Finland
- Folkhälsan Research Center, University of Helsinki, Helsinki, Finland
- Department of Obstetrics and Gynecology, National University Singapore, Yong Loo Lin School of Medicine, Singapore, Singapore
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland.
| |
Collapse
|
8
|
Bolaños P, Calderón JC. Excitation-contraction coupling in mammalian skeletal muscle: Blending old and last-decade research. Front Physiol 2022; 13:989796. [PMID: 36117698 PMCID: PMC9478590 DOI: 10.3389/fphys.2022.989796] [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: 07/08/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
The excitation–contraction coupling (ECC) in skeletal muscle refers to the Ca2+-mediated link between the membrane excitation and the mechanical contraction. The initiation and propagation of an action potential through the membranous system of the sarcolemma and the tubular network lead to the activation of the Ca2+-release units (CRU): tightly coupled dihydropyridine and ryanodine (RyR) receptors. The RyR gating allows a rapid, massive, and highly regulated release of Ca2+ from the sarcoplasmic reticulum (SR). The release from triadic places generates a sarcomeric gradient of Ca2+ concentrations ([Ca2+]) depending on the distance of a subcellular region from the CRU. Upon release, the diffusing Ca2+ has multiple fates: binds to troponin C thus activating the contractile machinery, binds to classical sarcoplasmic Ca2+ buffers such as parvalbumin, adenosine triphosphate and, experimentally, fluorescent dyes, enters the mitochondria and the SR, or is recycled through the Na+/Ca2+ exchanger and store-operated Ca2+ entry (SOCE) mechanisms. To commemorate the 7th decade after being coined, we comprehensively and critically reviewed “old”, historical landmarks and well-established concepts, and blended them with recent advances to have a complete, quantitative-focused landscape of the ECC. We discuss the: 1) elucidation of the CRU structures at near-atomic resolution and its implications for functional coupling; 2) reliable quantification of peak sarcoplasmic [Ca2+] using fast, low affinity Ca2+ dyes and the relative contributions of the Ca2+-binding mechanisms to the whole concert of Ca2+ fluxes inside the fibre; 3) articulation of this novel quantitative information with the unveiled structural details of the molecular machinery involved in mitochondrial Ca2+ handing to understand how and how much Ca2+ enters the mitochondria; 4) presence of the SOCE machinery and its different modes of activation, which awaits understanding of its magnitude and relevance in situ; 5) pharmacology of the ECC, and 6) emerging topics such as the use and potential applications of super-resolution and induced pluripotent stem cells (iPSC) in ECC. Blending the old with the new works better!
Collapse
Affiliation(s)
- Pura Bolaños
- Laboratory of Cellular Physiology, Centre of Biophysics and Biochemistry, Venezuelan Institute for Scientific Research (IVIC), Caracas, Venezuela
| | - Juan C. Calderón
- Physiology and Biochemistry Research Group-PHYSIS, Faculty of Medicine, University of Antioquia, Medellín, Colombia
- *Correspondence: Juan C. Calderón,
| |
Collapse
|
9
|
Biomechanical, Microstructural and Material Properties of Tendon and Bone in the Young Oim Mice Model of Osteogenesis Imperfecta. Int J Mol Sci 2022; 23:ijms23179928. [PMID: 36077325 PMCID: PMC9456454 DOI: 10.3390/ijms23179928] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/18/2022] [Accepted: 08/24/2022] [Indexed: 11/24/2022] Open
Abstract
Osteogenesis imperfecta (OI) is a genetic disorder of connective tissue characterized by low bone mass and spontaneous fractures, as well as extra-skeletal manifestations, such as dental abnormalities, blue sclera, hearing loss and joint hypermobility. Tendon ruptures have been reported in OI patients. Here, we characterized the biomechanical, structural and tissue material properties of bone and tendon in 5-week-old female osteogenesis imperfecta mice (oim), a validated model of severe type III OI, and compared these data with age- and sex-matched WT littermates. Oim tendons were less rigid and less resistant than those of WT mice. They also presented a significantly higher rate of pentosidine, without significant modification of enzymatic crosslinking. The oim bones were less resistant and avulsion fractures were evident at high tendinous stress areas. Alterations of trabecular and cortical bone microarchitectures were noticed in young female oim. Bone tissue material properties were also modified, with a less mature and more mineralized matrix in association with lower collagen maturity. Our data suggest that the tendon-to-bone unit is affected in young oim mice, which could explain tendon ruptures and bone fragility observed in OI patients.
Collapse
|
10
|
Araújo MC, Soczek SHS, Pontes JP, Marques LAC, Santos GS, Simão G, Bueno LR, Maria-Ferreira D, Muscará MN, Fernandes ES. An Overview of the TRP-Oxidative Stress Axis in Metabolic Syndrome: Insights for Novel Therapeutic Approaches. Cells 2022; 11:cells11081292. [PMID: 35455971 PMCID: PMC9030853 DOI: 10.3390/cells11081292] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/19/2022] [Accepted: 04/05/2022] [Indexed: 02/06/2023] Open
Abstract
Metabolic syndrome (MS) is a complex pathology characterized by visceral adiposity, insulin resistance, arterial hypertension, and dyslipidaemia. It has become a global epidemic associated with increased consumption of high-calorie, low-fibre food and sedentary habits. Some of its underlying mechanisms have been identified, with hypoadiponectinemia, inflammation and oxidative stress as important factors for MS establishment and progression. Alterations in adipokine levels may favour glucotoxicity and lipotoxicity which, in turn, contribute to inflammation and cellular stress responses within the adipose, pancreatic and liver tissues, in addition to hepatic steatosis. The multiple mechanisms of MS make its clinical management difficult, involving both non-pharmacological and pharmacological interventions. Transient receptor potential (TRP) channels are non-selective calcium channels involved in a plethora of physiological events, including energy balance, inflammation and oxidative stress. Evidence from animal models of disease has contributed to identify their specific contributions to MS and may help to tailor clinical trials for the disease. In this context, the oxidative stress sensors TRPV1, TRPA1 and TRPC5, play major roles in regulating inflammatory responses, thermogenesis and energy expenditure. Here, the interplay between these TRP channels and oxidative stress in MS is discussed in the light of novel therapies to treat this syndrome.
Collapse
Affiliation(s)
- Mizael C. Araújo
- Programa de Pós-Graduação, Universidade CEUMA, São Luís 65075-120, MA, Brazil; (M.C.A.); (G.S.S.)
| | - Suzany H. S. Soczek
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80250-060, PR, Brazil; (S.H.S.S.); (G.S.); (L.R.B.); (D.M.-F.)
- Programa de Pós-Graduação em Biotecnologia Aplicada à Saúde da Criança e do Adolescente, Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
| | - Jaqueline P. Pontes
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís 565085-080, MA, Brazil;
| | - Leonardo A. C. Marques
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil; (L.A.C.M.); (M.N.M.)
| | - Gabriela S. Santos
- Programa de Pós-Graduação, Universidade CEUMA, São Luís 65075-120, MA, Brazil; (M.C.A.); (G.S.S.)
| | - Gisele Simão
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80250-060, PR, Brazil; (S.H.S.S.); (G.S.); (L.R.B.); (D.M.-F.)
- Programa de Pós-Graduação em Biotecnologia Aplicada à Saúde da Criança e do Adolescente, Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
| | - Laryssa R. Bueno
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80250-060, PR, Brazil; (S.H.S.S.); (G.S.); (L.R.B.); (D.M.-F.)
- Programa de Pós-Graduação em Biotecnologia Aplicada à Saúde da Criança e do Adolescente, Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
| | - Daniele Maria-Ferreira
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80250-060, PR, Brazil; (S.H.S.S.); (G.S.); (L.R.B.); (D.M.-F.)
- Programa de Pós-Graduação em Biotecnologia Aplicada à Saúde da Criança e do Adolescente, Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
| | - Marcelo N. Muscará
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil; (L.A.C.M.); (M.N.M.)
| | - Elizabeth S. Fernandes
- Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba 80250-060, PR, Brazil; (S.H.S.S.); (G.S.); (L.R.B.); (D.M.-F.)
- Programa de Pós-Graduação em Biotecnologia Aplicada à Saúde da Criança e do Adolescente, Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil
- Correspondence:
| |
Collapse
|
11
|
Laurila PP, Luan P, Wohlwend M, Zanou N, Crisol B, Imamura de Lima T, Goeminne LJE, Gallart-Ayala H, Shong M, Ivanisevic J, Place N, Auwerx J. Inhibition of sphingolipid de novo synthesis counteracts muscular dystrophy. SCIENCE ADVANCES 2022; 8:eabh4423. [PMID: 35089797 PMCID: PMC8797791 DOI: 10.1126/sciadv.abh4423] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 11/01/2021] [Indexed: 05/29/2023]
Abstract
Duchenne muscular dystrophy (DMD), the most common muscular dystrophy, is a severe muscle disorder, causing muscle weakness, loss of independence, and premature death. Here, we establish the link between sphingolipids and muscular dystrophy. Transcripts of sphingolipid de novo biosynthesis pathway are up-regulated in skeletal muscle of patients with DMD and other muscular dystrophies, which is accompanied by accumulation of metabolites of the sphingolipid pathway in muscle and plasma. Pharmacological inhibition of sphingolipid synthesis by myriocin in the mdx mouse model of DMD ameliorated the loss in muscle function while reducing inflammation, improving Ca2+ homeostasis, preventing fibrosis of the skeletal muscle, heart, and diaphragm, and restoring the balance between M1 and M2 macrophages. Myriocin alleviated the DMD phenotype more than glucocorticoids. Our study identifies inhibition of sphingolipid synthesis, targeting multiple pathogenetic pathways simultaneously, as a strong candidate for treatment of muscular dystrophies.
Collapse
Affiliation(s)
- Pirkka-Pekka Laurila
- Laboratory of Integrative Systems Physiology, École Polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Peiling Luan
- Laboratory of Integrative Systems Physiology, École Polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Martin Wohlwend
- Laboratory of Integrative Systems Physiology, École Polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Nadège Zanou
- Institute of Sport Sciences, Department of Physiology, Faculty of Biology-Medicine, University of Lausanne, Lausanne, Switzerland
| | - Barbara Crisol
- Laboratory of Integrative Systems Physiology, École Polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Tanes Imamura de Lima
- Laboratory of Integrative Systems Physiology, École Polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Ludger J. E. Goeminne
- Laboratory of Integrative Systems Physiology, École Polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Hector Gallart-Ayala
- Metabolomics Platform, Faculty of Biology and Medicine, University of Lausanne (UNIL), Lausanne, Switzerland
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Republic of Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Julijana Ivanisevic
- Metabolomics Platform, Faculty of Biology and Medicine, University of Lausanne (UNIL), Lausanne, Switzerland
| | - Nicolas Place
- Institute of Sport Sciences, Department of Physiology, Faculty of Biology-Medicine, University of Lausanne, Lausanne, Switzerland
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, École Polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| |
Collapse
|
12
|
Chen L, Hassani Nia F, Stauber T. Ion Channels and Transporters in Muscle Cell Differentiation. Int J Mol Sci 2021; 22:13615. [PMID: 34948411 PMCID: PMC8703453 DOI: 10.3390/ijms222413615] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/04/2021] [Accepted: 12/14/2021] [Indexed: 01/12/2023] Open
Abstract
Investigations on ion channels in muscle tissues have mainly focused on physiological muscle function and related disorders, but emerging evidence supports a critical role of ion channels and transporters in developmental processes, such as controlling the myogenic commitment of stem cells. In this review, we provide an overview of ion channels and transporters that influence skeletal muscle myoblast differentiation, cardiac differentiation from pluripotent stem cells, as well as vascular smooth muscle cell differentiation. We highlight examples of model organisms or patients with mutations in ion channels. Furthermore, a potential underlying molecular mechanism involving hyperpolarization of the resting membrane potential and a series of calcium signaling is discussed.
Collapse
Affiliation(s)
- Lingye Chen
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany;
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou 510080, China
| | - Fatemeh Hassani Nia
- Institute for Molecular Medicine, MSH Medical School Hamburg, 20457 Hamburg, Germany;
| | - Tobias Stauber
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany;
- Institute for Molecular Medicine, MSH Medical School Hamburg, 20457 Hamburg, Germany;
| |
Collapse
|
13
|
Calsequestrin 1 Is an Active Partner of Stromal Interaction Molecule 2 in Skeletal Muscle. Cells 2021; 10:cells10112821. [PMID: 34831044 PMCID: PMC8616366 DOI: 10.3390/cells10112821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/13/2021] [Accepted: 10/19/2021] [Indexed: 12/25/2022] Open
Abstract
Calsequestrin 1 (CASQ1) in skeletal muscle buffers and senses Ca2+ in the sarcoplasmic reticulum (SR). CASQ1 also regulates store-operated Ca2+ entry (SOCE) by binding to stromal interaction molecule 1 (STIM1). Abnormal SOCE and/or abnormal expression or mutations in CASQ1, STIM1, or STIM2 are associated with human skeletal, cardiac, or smooth muscle diseases. However, the functional relevance of CASQ1 along with STIM2 has not been studied in any tissue, including skeletal muscle. First, in the present study, it was found by biochemical approaches that CASQ1 is bound to STIM2 via its 92 N-terminal amino acids (C1 region). Next, to examine the functional relevance of the CASQ1-STIM2 interaction in skeletal muscle, the full-length wild-type CASQ1 or the C1 region was expressed in mouse primary skeletal myotubes, and the myotubes were examined using single-myotube Ca2+ imaging experiments and transmission electron microscopy observations. The CASQ1-STIM2 interaction via the C1 region decreased SOCE, increased intracellular Ca2+ release for skeletal muscle contraction, and changed intracellular Ca2+ distributions (high Ca2+ in the SR and low Ca2+ in the cytosol were observed). Furthermore, the C1 region itself (which lacks Ca2+-buffering ability but has STIM2-binding ability) decreased the expression of Ca2+-related proteins (canonical-type transient receptor potential cation channel type 6 and calmodulin 1) and induced mitochondrial shape abnormalities. Therefore, in skeletal muscle, CASQ1 plays active roles in Ca2+ movement and distribution by interacting with STIM2 as well as Ca2+ sensing and buffering.
Collapse
|
14
|
Luan P, D'Amico D, Andreux PA, Laurila PP, Wohlwend M, Li H, Imamura de Lima T, Place N, Rinsch C, Zanou N, Auwerx J. Urolithin A improves muscle function by inducing mitophagy in muscular dystrophy. Sci Transl Med 2021; 13:13/588/eabb0319. [PMID: 33827972 DOI: 10.1126/scitranslmed.abb0319] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 11/25/2020] [Accepted: 03/01/2021] [Indexed: 12/12/2022]
Abstract
Duchenne muscular dystrophy (DMD) is the most common muscular dystrophy, and despite advances in genetic and pharmacological disease-modifying treatments, its management remains a major challenge. Mitochondrial dysfunction contributes to DMD, yet the mechanisms by which this occurs remain elusive. Our data in experimental models and patients with DMD show that reduced expression of genes involved in mitochondrial autophagy, or mitophagy, contributes to mitochondrial dysfunction. Mitophagy markers were reduced in skeletal muscle and in muscle stem cells (MuSCs) of a mouse model of DMD. Administration of the mitophagy activator urolithin A (UA) rescued mitophagy in DMD worms and mice and in primary myoblasts from patients with DMD, increased skeletal muscle respiratory capacity, and improved MuSCs' regenerative ability, resulting in the recovery of muscle function and increased survival in DMD mouse models. These data indicate that restoration of mitophagy alleviates symptoms of DMD and suggest that UA may have potential therapeutic applications for muscular dystrophies.
Collapse
Affiliation(s)
- Peiling Luan
- Laboratory for Integrative and Systems Physiology, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Davide D'Amico
- Laboratory for Integrative and Systems Physiology, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.,Amazentis SA, Ecole Polytechnique Fédérale de Lausanne (EPFL) Innovation Park, 1015 Lausanne, Switzerland
| | - Pénélope A Andreux
- Amazentis SA, Ecole Polytechnique Fédérale de Lausanne (EPFL) Innovation Park, 1015 Lausanne, Switzerland
| | - Pirkka-Pekka Laurila
- Laboratory for Integrative and Systems Physiology, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Martin Wohlwend
- Laboratory for Integrative and Systems Physiology, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Hao Li
- Laboratory for Integrative and Systems Physiology, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Tanes Imamura de Lima
- Laboratory for Integrative and Systems Physiology, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Nicolas Place
- Institute of Sport Sciences, Quartier UNIL-Centre, Faculty of Biology-Medicine, University of Lausanne, Bâtiment Synathlon, 1015 Lausanne, Switzerland
| | - Chris Rinsch
- Amazentis SA, Ecole Polytechnique Fédérale de Lausanne (EPFL) Innovation Park, 1015 Lausanne, Switzerland
| | - Nadège Zanou
- Institute of Sport Sciences, Quartier UNIL-Centre, Faculty of Biology-Medicine, University of Lausanne, Bâtiment Synathlon, 1015 Lausanne, Switzerland
| | - Johan Auwerx
- Laboratory for Integrative and Systems Physiology, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| |
Collapse
|
15
|
Hostrup M, Cairns SP, Bangsbo J. Muscle Ionic Shifts During Exercise: Implications for Fatigue and Exercise Performance. Compr Physiol 2021; 11:1895-1959. [PMID: 34190344 DOI: 10.1002/cphy.c190024] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Exercise causes major shifts in multiple ions (e.g., K+ , Na+ , H+ , lactate- , Ca2+ , and Cl- ) during muscle activity that contributes to development of muscle fatigue. Sarcolemmal processes can be impaired by the trans-sarcolemmal rundown of ion gradients for K+ , Na+ , and Ca2+ during fatiguing exercise, while changes in gradients for Cl- and Cl- conductance may exert either protective or detrimental effects on fatigue. Myocellular H+ accumulation may also contribute to fatigue development by lowering glycolytic rate and has been shown to act synergistically with inorganic phosphate (Pi) to compromise cross-bridge function. In addition, sarcoplasmic reticulum Ca2+ release function is severely affected by fatiguing exercise. Skeletal muscle has a multitude of ion transport systems that counter exercise-related ionic shifts of which the Na+ /K+ -ATPase is of major importance. Metabolic perturbations occurring during exercise can exacerbate trans-sarcolemmal ionic shifts, in particular for K+ and Cl- , respectively via metabolic regulation of the ATP-sensitive K+ channel (KATP ) and the chloride channel isoform 1 (ClC-1). Ion transport systems are highly adaptable to exercise training resulting in an enhanced ability to counter ionic disturbances to delay fatigue and improve exercise performance. In this article, we discuss (i) the ionic shifts occurring during exercise, (ii) the role of ion transport systems in skeletal muscle for ionic regulation, (iii) how ionic disturbances affect sarcolemmal processes and muscle fatigue, (iv) how metabolic perturbations exacerbate ionic shifts during exercise, and (v) how pharmacological manipulation and exercise training regulate ion transport systems to influence exercise performance in humans. © 2021 American Physiological Society. Compr Physiol 11:1895-1959, 2021.
Collapse
Affiliation(s)
- Morten Hostrup
- Section of Integrative Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Simeon Peter Cairns
- SPRINZ, School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand.,Health and Rehabilitation Research Institute, Auckland University of Technology, Auckland, New Zealand
| | - Jens Bangsbo
- Section of Integrative Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
16
|
Fu Y, Shang P, Zhang B, Tian X, Nie R, Zhang R, Zhang H. Function of the Porcine TRPC1 Gene in Myogenesis and Muscle Growth. Cells 2021; 10:cells10010147. [PMID: 33450983 PMCID: PMC7828378 DOI: 10.3390/cells10010147] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/03/2021] [Accepted: 01/11/2021] [Indexed: 12/19/2022] Open
Abstract
In animals, muscle growth is a quantitative trait controlled by multiple genes. Previously, we showed that the transient receptor potential channel 1 (TRPC1) gene was differentially expressed in muscle tissues between pig breeds with divergent growth traits base on RNA-seq. Here, we characterized TRPC1 expression profiles in different tissues and pig breeds and showed that TRPC1 was highly expressed in the muscle. We found two single nucleotide polymorphisms (SNPs) (C-1763T and C-1604T) in TRPC1 that could affect the promoter region activity and regulate pig growth rate. Functionally, we used RNAi and overexpression to illustrate that TRPC1 promotes myoblast proliferation, migration, differentiation, fusion, and muscle hypertrophy while inhibiting muscle degradation. These processes may be mediated by the activation of Wnt signaling pathways. Altogether, our results revealed that TRPC1 might promote muscle growth and development and plays a key role in Wnt-mediated myogenesis.
Collapse
Affiliation(s)
- Yu Fu
- National Engineering Laboratory for Livestock and Poultry Breeding, Plateau Animal Genetic Resources Center, China Agriculture University, Beijing 100193, China; (Y.F.); (B.Z.); (X.T.); (R.N.); (R.Z.)
| | - Peng Shang
- College of Animal Science, Tibet Agriculture and Animal Husbandry College, Linzhi 860000, China;
| | - Bo Zhang
- National Engineering Laboratory for Livestock and Poultry Breeding, Plateau Animal Genetic Resources Center, China Agriculture University, Beijing 100193, China; (Y.F.); (B.Z.); (X.T.); (R.N.); (R.Z.)
| | - Xiaolong Tian
- National Engineering Laboratory for Livestock and Poultry Breeding, Plateau Animal Genetic Resources Center, China Agriculture University, Beijing 100193, China; (Y.F.); (B.Z.); (X.T.); (R.N.); (R.Z.)
| | - Ruixue Nie
- National Engineering Laboratory for Livestock and Poultry Breeding, Plateau Animal Genetic Resources Center, China Agriculture University, Beijing 100193, China; (Y.F.); (B.Z.); (X.T.); (R.N.); (R.Z.)
| | - Ran Zhang
- National Engineering Laboratory for Livestock and Poultry Breeding, Plateau Animal Genetic Resources Center, China Agriculture University, Beijing 100193, China; (Y.F.); (B.Z.); (X.T.); (R.N.); (R.Z.)
| | - Hao Zhang
- National Engineering Laboratory for Livestock and Poultry Breeding, Plateau Animal Genetic Resources Center, China Agriculture University, Beijing 100193, China; (Y.F.); (B.Z.); (X.T.); (R.N.); (R.Z.)
- Correspondence:
| |
Collapse
|
17
|
Kurth F, Tai YK, Parate D, van Oostrum M, Schmid YRF, Toh SJ, Yap JLY, Wollscheid B, Othman A, Dittrich PS, Franco-Obregón A. Cell-Derived Vesicles as TRPC1 Channel Delivery Systems for the Recovery of Cellular Respiratory and Proliferative Capacities. ACTA ACUST UNITED AC 2020; 4:e2000146. [PMID: 32875708 DOI: 10.1002/adbi.202000146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/28/2020] [Indexed: 11/07/2022]
Abstract
Pulsed electromagnetic fields (PEMFs) are capable of specifically activating a TRPC1-mitochondrial axis underlying cell expansion and mitohormetic survival adaptations. This study characterizes cell-derived vesicles (CDVs) generated from C2C12 murine myoblasts and shows that they are equipped with the sufficient molecular machinery to confer mitochondrial respiratory capacity and associated proliferative responses upon their fusion with recipient cells. CDVs derived from wild type C2C12 myoblasts include the cation-permeable transient receptor potential (TRP) channels, TRPC1 and TRPA1, and directly respond to PEMF exposure with TRPC1-mediated calcium entry. By contrast, CDVs derived from C2C12 muscle cells in which TRPC1 has been genetically knocked-down using CRISPR/Cas9 genome editing, do not. Wild type C2C12-derived CDVs are also capable of restoring PEMF-induced proliferative and mitochondrial activation in two C2C12-derived TRPC1 knockdown clonal cell lines in accordance to their endogenous degree of TRPC1 suppression. C2C12 wild type CDVs respond to menthol with calcium entry and accumulation, likewise verifying TRPA1 functional gating and further corroborating compartmental integrity. Proteomic and lipidomic analyses confirm the surface membrane origin of the CDVs providing an initial indication of the minimal cellular machinery required to recover mitochondrial function. CDVs hence possess the potential of restoring respiratory and proliferative capacities to senescent cells and tissues.
Collapse
Affiliation(s)
- Felix Kurth
- Department of Biosystems Science and Engineering, Bioanalytics Group, ETH Zurich, Mattenstrasse 26, Basel, 4058, Switzerland
| | - Yee Kit Tai
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems Laboratory, BICEPS, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore
| | - Dinesh Parate
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems Laboratory, BICEPS, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore
| | - Marc van Oostrum
- Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zurich, Otto-Stern-Weg 3, Zurich, 8093, Switzerland
| | - Yannick R F Schmid
- Department of Biosystems Science and Engineering, Bioanalytics Group, ETH Zurich, Mattenstrasse 26, Basel, 4058, Switzerland
| | - Shi Jie Toh
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems Laboratory, BICEPS, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore
| | - Jasmine Lye Yee Yap
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems Laboratory, BICEPS, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore
| | - Bernd Wollscheid
- Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zurich, Otto-Stern-Weg 3, Zurich, 8093, Switzerland
| | - Alaa Othman
- Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zurich, Otto-Stern-Weg 3, Zurich, 8093, Switzerland.,Institute of Molecular Systems Biology, Department of Biology, ETH Zurich, Zurich, 8093, Switzerland.,Institute for Clinical Chemistry, University Hospital Zurich, Zurich, 8091, Switzerland
| | - Petra S Dittrich
- Department of Biosystems Science and Engineering, Bioanalytics Group, ETH Zurich, Mattenstrasse 26, Basel, 4058, Switzerland
| | - Alfredo Franco-Obregón
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems Laboratory, BICEPS, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore.,Institute for Health Innovation & Technology, iHealthtech, National University of Singapore, MD6, 14 Medical Drive, Singapore, 117599, Singapore
| |
Collapse
|
18
|
Tai YK, Ng C, Purnamawati K, Yap JLY, Yin JN, Wong C, Patel BK, Soong PL, Pelczar P, Fröhlich J, Beyer C, Fong CHH, Ramanan S, Casarosa M, Cerrato CP, Foo ZL, Pannir Selvan RM, Grishina E, Degirmenci U, Toh SJ, Richards PJ, Mirsaidi A, Wuertz‐Kozak K, Chong SY, Ferguson SJ, Aguzzi A, Monici M, Sun L, Drum CL, Wang J, Franco‐Obregón A. Magnetic fields modulate metabolism and gut microbiome in correlation with
Pgc‐1α
expression: Follow‐up to an in vitro magnetic mitohormetic study. FASEB J 2020; 34:11143-11167. [DOI: 10.1096/fj.201903005rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 06/07/2020] [Accepted: 06/15/2020] [Indexed: 01/07/2023]
Affiliation(s)
- Yee Kit Tai
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Charmaine Ng
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
| | - Kristy Purnamawati
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Jasmine Lye Yee Yap
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Jocelyn Naixin Yin
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Craig Wong
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Bharati Kadamb Patel
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
| | - Poh Loong Soong
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Pawel Pelczar
- Centre for Transgenic Models University of Basel Basel Switzerland
- Institute of Laboratory Animal Science University of Zürich Zürich Switzerland
| | | | - Christian Beyer
- Centre Suisse d'électronique et de microtechnique, CSEM SA Neuchatel Switzerland
| | - Charlene Hui Hua Fong
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Sharanya Ramanan
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Marco Casarosa
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
- Institute for Biomechanics ETH Zürich Zürich Switzerland
| | | | - Zi Ling Foo
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Rina Malathi Pannir Selvan
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Elina Grishina
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Ufuk Degirmenci
- Institute of Molecular and Cell Biology, A*STAR Singapore Singapore
| | - Shi Jie Toh
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
| | - Pete J. Richards
- Competence Center for Applied Biotechnology and Molecular Medicine University of Zürich Zürich Switzerland
| | - Ali Mirsaidi
- Competence Center for Applied Biotechnology and Molecular Medicine University of Zürich Zürich Switzerland
| | - Karin Wuertz‐Kozak
- Competence Center for Applied Biotechnology and Molecular Medicine University of Zürich Zürich Switzerland
- Department of Biomedical Engineering Rochester Institute of Technology (RIT) Rochester NY USA
- Cardiovascular Research Institute (CVRI), National University Heart Centre Singapore (NUHCS) Singapore Singapore
| | - Suet Yen Chong
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Cardiovascular Research Institute (CVRI), National University Heart Centre Singapore (NUHCS) Singapore Singapore
| | - Stephen J. Ferguson
- Institute of Molecular and Cell Biology, A*STAR Singapore Singapore
- Competence Center for Applied Biotechnology and Molecular Medicine University of Zürich Zürich Switzerland
| | - Adriano Aguzzi
- Institut für Neuropathologie Universitätsspital Zürich Zürich Switzerland
| | - Monica Monici
- ASAcampus JL, ASA Res. Div. ‐ Dept. of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
| | - Lei Sun
- DUKE‐NUS Graduate Medical School Singapore Singapore Singapore
| | - Chester L. Drum
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Cardiovascular Research Institute (CVRI), National University Heart Centre Singapore (NUHCS) Singapore Singapore
| | - Jiong‐Wei Wang
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Cardiovascular Research Institute (CVRI), National University Heart Centre Singapore (NUHCS) Singapore Singapore
- Department of Physiology Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
| | - Alfredo Franco‐Obregón
- Department of Surgery Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Biolonic Currents Electromagnetic Pulsing Systems Laboratory BICEPS, National University of Singapore Singapore Singapore
- Institute of Molecular and Cell Biology, A*STAR Singapore Singapore
- Department of Physiology Yong Loo Lin School of Medicine, National University of Singapore Singapore Singapore
- Institute for Health Innovation & Technology, iHealthtech National University of Singapore Singapore Singapore
| |
Collapse
|
19
|
Abou-Samra M, Selvais CM, Boursereau R, Lecompte S, Noel L, Brichard SM. AdipoRon, a new therapeutic prospect for Duchenne muscular dystrophy. J Cachexia Sarcopenia Muscle 2020; 11:518-533. [PMID: 31965757 PMCID: PMC7113498 DOI: 10.1002/jcsm.12531] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 10/23/2019] [Accepted: 11/14/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Adiponectin (ApN) is a hormone known to exhibit insulin-sensitizing, fat-burning, and anti-inflammatory properties in several tissues, including the skeletal muscle. Duchenne muscular dystrophy (DMD) is a devastating disease characterized by dystrophin deficiency with subsequent chronic inflammation, myofiber necrosis, and impaired regeneration. Previously, we showed that transgenic up-regulation of ApN could significantly attenuate the dystrophic phenotype in mdx mice (model of DMD). Recently, an orally active ApN receptor agonist, AdipoRon, has been identified. This synthetic small molecule has the advantage of being more easily produced and administrable than ApN. The aim of this study was to investigate the potential effects of AdipoRon on the dystrophic muscle. METHODS Four-week-old mdx mice (n = 6-9 per group) were orally treated with AdipoRon (mdx-AR) for 8 weeks and compared with untreated (mdx) mice and to control (wild-type) mice. In vivo functional tests were carried out to measure the global force and endurance of mice. Ex vivo biochemical and molecular analyses were performed to evaluate the pathophysiology of the skeletal muscle. Finally, in vitro tests were conducted on primary cultures of healthy and DMD human myotubes. RESULTS AdipoRon treatment mitigated oxidative stress (-30% to 45% for 4-hydroxy-2-nonenal and peroxiredoxin 3, P < 0.0001) as well as inflammation in muscles of mdx mice (-35% to 65% for interleukin 1 beta, tumour necrosis factor alpha, and cluster of differentiation 68, a macrophage maker, P < 0.0001) while increasing the anti-inflammatory cytokine, interleukin 10 (~5-fold, P < 0.0001). AdipoRon also improved the myogenic programme as assessed by a ~2-fold rise in markers of muscle proliferation and differentiation (P < 0.01 or less vs. untreated mdx). Plasma lactate dehydrogenase and creatine kinase were reduced by 30-40% in mdx-AR mice, reflecting less sarcolemmal damage (P < 0.0001). When compared with untreated mdx mice, mdx-AR mice exhibited enhanced physical performance with an increase in both muscle force and endurance and a striking restoration of the running capacity during eccentric exercise. AdipoRon mainly acted through ApN receptor 1 by increasing AMP-activated protein kinase signalling, which led to repression of nuclear factor-kappa B, up-regulation of utrophin (a dystrophin analogue), and a switch towards an oxidative and more resistant fibre phenotype. The effects of AdipoRon were then recapitulated in human DMD myotubes. CONCLUSIONS These results demonstrate that AdipoRon exerts several beneficial effects on the dystrophic muscle. This molecule could offer promising therapeutic prospect for managing DMD or other muscle and inflammatory disorders.
Collapse
Affiliation(s)
- Michel Abou-Samra
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Université Catholique de Louvain, Brussels, Belgium
| | - Camille M Selvais
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Université Catholique de Louvain, Brussels, Belgium
| | - Raphael Boursereau
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Université Catholique de Louvain, Brussels, Belgium
| | - Sophie Lecompte
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Université Catholique de Louvain, Brussels, Belgium
| | - Laurence Noel
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Université Catholique de Louvain, Brussels, Belgium
| | - Sonia M Brichard
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Université Catholique de Louvain, Brussels, Belgium
| |
Collapse
|
20
|
Choi JH, Jeong SY, Oh MR, Allen PD, Lee EH. TRPCs: Influential Mediators in Skeletal Muscle. Cells 2020; 9:cells9040850. [PMID: 32244622 PMCID: PMC7226745 DOI: 10.3390/cells9040850] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 02/07/2023] Open
Abstract
Ca2+ itself or Ca2+-dependent signaling pathways play fundamental roles in various cellular processes from cell growth to death. The most representative example can be found in skeletal muscle cells where a well-timed and adequate supply of Ca2+ is required for coordinated Ca2+-dependent skeletal muscle functions, such as the interactions of contractile proteins during contraction. Intracellular Ca2+ movements between the cytosol and sarcoplasmic reticulum (SR) are strictly regulated to maintain the appropriate Ca2+ supply in skeletal muscle cells. Added to intracellular Ca2+ movements, the contribution of extracellular Ca2+ entry to skeletal muscle functions and its significance have been continuously studied since the early 1990s. Here, studies on the roles of channel proteins that mediate extracellular Ca2+ entry into skeletal muscle cells using skeletal myoblasts, myotubes, fibers, tissue, or skeletal muscle-originated cell lines are reviewed with special attention to the proposed functions of transient receptor potential canonical proteins (TRPCs) as store-operated Ca2+ entry (SOCE) channels under normal conditions and the potential abnormal properties of TRPCs in muscle diseases such as Duchenne muscular dystrophy (DMD).
Collapse
Affiliation(s)
- Jun Hee Choi
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Korea
| | - Seung Yeon Jeong
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Korea
| | - Mi Ri Oh
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Korea
| | - Paul D. Allen
- Leeds Institute of Biomedical & Clinical Sciences, St. James’s University Hospital, University of Leeds, Leeds LS97TF, UK
| | - Eun Hui Lee
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Korea
- Correspondence: ; Tel.: +82-2-2258-7279
| |
Collapse
|
21
|
A muscular hypotonia-associated STIM1 mutant at R429 induces abnormalities in intracellular Ca 2+ movement and extracellular Ca 2+ entry in skeletal muscle. Sci Rep 2019; 9:19140. [PMID: 31844136 PMCID: PMC6915709 DOI: 10.1038/s41598-019-55745-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/02/2019] [Indexed: 12/20/2022] Open
Abstract
Stromal interaction molecule 1 (STIM1) mediates extracellular Ca2+ entry into the cytosol through a store-operated Ca2+ entry (SOCE) mechanism, which is involved in the physiological functions of various tissues, including skeletal muscle. STIM1 is also associated with skeletal muscle diseases, but its pathological mechanisms have not been well addressed. The present study focused on examining the pathological mechanism(s) of a mutant STIM1 (R429C) that causes human muscular hypotonia. R429C was expressed in mouse primary skeletal myotubes, and the properties of the skeletal myotubes were examined using single-cell Ca2+ imaging of myotubes and transmission electron microscopy (TEM) along with biochemical approaches. R429C did not interfere with the terminal differentiation of myoblasts to myotubes. Unlike wild-type STIM1, there was no further increase of SOCE by R429C. R429C bound to endogenous STIM1 and slowed down the initial rate of SOCE that were mediated by endogenous STIM1. Moreover, R429C increased intracellular Ca2+ movement in response to membrane depolarization by eliminating the attenuation on dihydropyridine receptor-ryanodine receptor (DHPR-RyR1) coupling by endogenous STIM1. The cytosolic Ca2+ level was also increased due to the reduction in SR Ca2+ level. In addition, R429C-expressing myotubes showed abnormalities in mitochondrial shape, a significant decrease in ATP levels, and the higher expression levels of mitochondrial fission-mediating proteins. Therefore, serial defects in SOCE, intracellular Ca2+ movement, and cytosolic Ca2+ level along with mitochondrial abnormalities in shape and ATP level could be a pathological mechanism of R429C for human skeletal muscular hypotonia. This study also suggests a novel clue that STIM1 in skeletal muscle could be related to mitochondria via regulating intra and extracellular Ca2+ movements.
Collapse
|
22
|
Yap JLY, Tai YK, Fröhlich J, Fong CHH, Yin JN, Foo ZL, Ramanan S, Beyer C, Toh SJ, Casarosa M, Bharathy N, Kala MP, Egli M, Taneja R, Lee CN, Franco-Obregón A. Ambient and supplemental magnetic fields promote myogenesis via a TRPC1-mitochondrial axis: evidence of a magnetic mitohormetic mechanism. FASEB J 2019; 33:12853-12872. [PMID: 31518158 DOI: 10.1096/fj.201900057r] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We show that both supplemental and ambient magnetic fields modulate myogenesis. A lone 10 min exposure of myoblasts to 1.5 mT amplitude supplemental pulsed magnetic fields (PEMFs) accentuated in vitro myogenesis by stimulating transient receptor potential (TRP)-C1-mediated calcium entry and downstream nuclear factor of activated T cells (NFAT)-transcriptional and P300/CBP-associated factor (PCAF)-epigenetic cascades, whereas depriving myoblasts of ambient magnetic fields slowed myogenesis, reduced TRPC1 expression, and silenced NFAT-transcriptional and PCAF-epigenetic cascades. The expression levels of peroxisome proliferator-activated receptor γ coactivator 1α, the master regulator of mitochondriogenesis, was also enhanced by brief PEMF exposure. Accordingly, mitochondriogenesis and respiratory capacity were both enhanced with PEMF exposure, paralleling TRPC1 expression and pharmacological sensitivity. Clustered regularly interspaced short palindromic repeats-Cas9 knockdown of TRPC1 precluded proliferative and mitochondrial responses to supplemental PEMFs, whereas small interfering RNA gene silencing of TRPM7 did not, coinciding with data that magnetoreception did not coincide with the expression or function of other TRP channels. The aminoglycoside antibiotics antagonized and down-regulated TRPC1 expression and, when applied concomitantly with PEMF exposure, attenuated PEMF-stimulated calcium entry, mitochondrial respiration, proliferation, differentiation, and epigenetic directive in myoblasts, elucidating why the developmental potential of magnetic fields may have previously escaped detection. Mitochondrial-based survival adaptations were also activated upon PEMF stimulation. Magnetism thus deploys an authentic myogenic directive that relies on an interplay between mitochondria and TRPC1 to reach fruition.-Yap, J. L. Y., Tai, Y. K., Fröhlich, J., Fong, C. H. H., Yin, J. N., Foo, Z. L., Ramanan, S., Beyer, C., Toh, S. J., Casarosa, M., Bharathy, N., Kala, M. P., Egli, M., Taneja, R., Lee, C. N., Franco-Obregón, A. Ambient and supplemental magnetic fields promote myogenesis via a TRPC1-mitochondrial axis: evidence of a magnetic mitohormetic mechanism.
Collapse
Affiliation(s)
- Jasmine Lye Yee Yap
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems (BICEPS) Laboratory, National University of Singapore, Singapore
| | - Yee Kit Tai
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems (BICEPS) Laboratory, National University of Singapore, Singapore
| | - Jürg Fröhlich
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Institute for Electromagnetic Fields, Swiss Federal Institute of Technology (ETH), Zurich, Switzerland
| | - Charlene Hui Hua Fong
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems (BICEPS) Laboratory, National University of Singapore, Singapore
| | - Jocelyn Naixin Yin
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems (BICEPS) Laboratory, National University of Singapore, Singapore
| | - Zi Ling Foo
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems (BICEPS) Laboratory, National University of Singapore, Singapore
| | - Sharanya Ramanan
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems (BICEPS) Laboratory, National University of Singapore, Singapore
| | - Christian Beyer
- Institute for Electromagnetic Fields, Swiss Federal Institute of Technology (ETH), Zurich, Switzerland.,Centre Suisse d'Électronique et de Microtechnique (CSEM SA), Neuchâtel, Switzerland
| | - Shi Jie Toh
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems (BICEPS) Laboratory, National University of Singapore, Singapore
| | - Marco Casarosa
- Department of Experimental and Clinical Biomedical Sciences Mario Serio, University of Florence, Florence, Italy
| | - Narendra Bharathy
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Children's Cancer Therapy Development Institute, Beaverton, Oregon, USA
| | - Monica Palanichamy Kala
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Marcel Egli
- Institute of Medical Engineering, Lucerne University of Applied Sciences and Arts, Hergiswil, Switzerland; and
| | - Reshma Taneja
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Chuen Neng Lee
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Institute for Health Innovation and Technology, iHealthtech, National University of Singapore, Singapore
| | - Alfredo Franco-Obregón
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,BioIonic Currents Electromagnetic Pulsing Systems (BICEPS) Laboratory, National University of Singapore, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Institute for Health Innovation and Technology, iHealthtech, National University of Singapore, Singapore
| |
Collapse
|
23
|
Zhao P, Liu XM, Sun QC, Cui YF. Overactivation of the sodium-calcium exchanger and transient receptor potential in anesthesia-induced malignant hyperthermia. IUBMB Life 2019; 71:2048-2054. [PMID: 31381266 DOI: 10.1002/iub.2138] [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: 06/25/2019] [Accepted: 07/11/2019] [Indexed: 11/09/2022]
Abstract
Malignant hyperthermia is a pharmacogenetic disorder, which is an uncommon but frequently fatal intricacy of inhalation anesthesia in man. It causes a quick rise in body temperature to highly irreversible levels, which causes death in around three of four cases. The trigger anesthetics cause an anomalous, continued ascent in myoplasmic calcium levels. Possible mechanisms by which continuous release of sodium, calcium from skeletal muscle plasma membrane and sarcoplasmic reticulum stores respectively can produce the profound hyperthermia are discussed.
Collapse
Affiliation(s)
- Peng Zhao
- Department of Anesthesiology, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Xiu-Min Liu
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Qian-Chuang Sun
- Department of Anesthesiology, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Yun-Feng Cui
- Department of Anesthesiology, The Second Hospital of Jilin University, Changchun, Jilin, China
| |
Collapse
|
24
|
Mirzoev TM, Tyganov SA, Petrova IO, Shenkman BS. Acute recovery from disuse atrophy: the role of stretch-activated ion channels in the activation of anabolic signaling in skeletal muscle. Am J Physiol Endocrinol Metab 2019; 316:E86-E95. [PMID: 30457911 DOI: 10.1152/ajpendo.00261.2018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The aim of the study was to 1) measure time-course alternations in the rate of protein synthesis (PS) and phosphorylation status of the key anabolic markers, and 2) find out the role of stretch-activated ion channels (SACs) in the activation of anabolic signaling in the rat soleus during an acute reloading following disuse atrophy. Wistar rats were subjected to 14-day hindlimb suspension (HS) followed by 6, 12, and 24 h of reloading. To examine the role of SAC in the reloading-induced activation of anabolic signaling, the rats were treated with gadolinium (Gd3+), a SAC blocker. The content of signaling proteins was determined by Western blot. c-Myc mRNA expression was assessed by RT-PCR. After 24-h reloading, the PS rate was elevated by 44% versus control. After 6-h reloading, the p-70-kDa ribosomal protein S6 kinase (p70S6k) and translation initiation factor 4E-binding protein 1 (4E-BP1) did not differ from control; however, 12-h reloading resulted in an upregulation of both p70s6k and 4E-BP1 phosphorylation versus control. The phosphorylation of AKT (Ser473) and glycogen synthase kinase-3β (Ser9) was reduced after HS and then completely restored by 12-h reloading. c-Myc was significantly upregulated during the entire reloading. Gd3+ treatment during reloading (12 h) prevented a full phosphorylation of p70S6k, rpS6, 4E-BP1, as well as PS activation. The results of the study suggest that 1) enhanced PS during the acute recovery from HS may be associated with the activation of ribosome biogenesis as well as mammalian target of rapamycin complex 1 (mTORC1)-dependent signaling pathways, and 2) functional SACs are necessary for complete activation of mTORC1 signaling in rat soleus during acute recovery from HS.
Collapse
Affiliation(s)
- Timur M Mirzoev
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences , Moscow , Russia
| | - Sergey A Tyganov
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences , Moscow , Russia
| | - Irina O Petrova
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences , Moscow , Russia
| | - Boris S Shenkman
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences , Moscow , Russia
| |
Collapse
|
25
|
Wolfrum C, Kiehlmann E, Pelczar P. TRPC1 regulates brown adipose tissue activity in a PPARγ-dependent manner. Am J Physiol Endocrinol Metab 2018; 315:E825-E832. [PMID: 29989850 DOI: 10.1152/ajpendo.00170.2017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Brown adipose tissue (BAT) has the unique ability to convert energy stored in the form of triglycerides into heat. This property makes BAT a target tissue to increase energy expenditure and improve systemic metabolic control. TRPC1 is a founding member of the TRP protein family that also includes several temperature sensitive channels. We show that TRPC1 is highly expressed in all adipocyte depots including BAT and that Trpc1-deficient mice are prone to weight gain and manifest reduced metabolic control. We also demonstrate that knockdown of TRPC1 in cultured brown adipocytes leads to a downregulation of several metabolic genes, including UCP1 and PPARγ, as well as upregulation of a BAT-specific thermosensitive channel TRPV2, ultimately resulting in impaired respiratory function. We also show that TRPC1 is a possible target of PPARγ, suggesting that TRPC1 is a downstream component of a mechanism that translates metabolic or environmental stimuli into output in the form of BAT activity. Better understanding of the possible role of TRPC1 and other TRP channels in body temperature regulation and BAT function may help us to develop obesity therapies based on BAT activation.
Collapse
Affiliation(s)
- Christian Wolfrum
- Department of Health Science and Technology, ETH Zürich, Schwerzenbach, Switzerland
| | - Elke Kiehlmann
- Department of Health Science and Technology, ETH Zürich, Schwerzenbach, Switzerland
| | - Pawel Pelczar
- Center for Transgenic Models, University of Basel , Basel , Switzerland
| |
Collapse
|
26
|
TRPC channels in exercise-mimetic therapy. Pflugers Arch 2018; 471:507-517. [PMID: 30298191 PMCID: PMC6515694 DOI: 10.1007/s00424-018-2211-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/18/2018] [Accepted: 09/25/2018] [Indexed: 11/21/2022]
Abstract
Physical exercise yields beneficial effects on all types of muscle cells, which are essential for the maintenance of cardiovascular homeostasis and good blood circulation. Daily moderate exercise increases systemic antioxidative capacity, which can lead to the prevention of the onset and progression of oxidative stress-related diseases. Therefore, exercise is now widely accepted as one of the best therapeutic strategies for the treatment of ischemic (hypoxic) diseases. Canonical transient receptor potential (TRPC) proteins are non-selective cation channels activated by mechanical stress and/or stimulation of phospholipase C-coupled surface receptors. TRPC channels, especially diacylglycerol-activated TRPC channels (TRPC3 and TRPC6; TRPC3/6), play a key role in the development of cardiovascular remodeling. We have recently found that physical interaction between TRPC3 and NADPH oxidase (Nox) 2 under hypoxic stress promotes Nox2-dependent reactive oxygen species (ROS) production and mediates rodent cardiac plasticity, and inhibition of the TRPC3-Nox2 protein complex results in enhancement of myocardial compliance and flexibility similar to that observed in exercise-treated hearts. In this review, we describe current understanding of the roles of TRPC channels in striated muscle (patho)physiology and propose that targeting TRPC-based protein complexes could be a new strategy to imitate exercise therapy.
Collapse
|
27
|
Deregulation of calcium homeostasis in Bcr-Abl-dependent chronic myeloid leukemia. Oncotarget 2018; 9:26309-26327. [PMID: 29899861 PMCID: PMC5995172 DOI: 10.18632/oncotarget.25241] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 04/03/2018] [Indexed: 12/19/2022] Open
Abstract
Background Chronic myeloid leukemia (CML) results from hematopoietic stem cell transformation by the bcr-abl chimeric oncogene, encoding a 210 kDa protein with constitutive tyrosine kinase activity. In spite of the efficiency of tyrosine kinase inhibitors (TKI; Imatinib), other strategies are explored to eliminate CML leukemia stem cells, such as calcium pathways. Results In this work, we showed that Store-Operated Calcium Entry (SOCE) and thrombin induced calcium influx were decreased in Bcr-Abl expressing 32d cells (32d-p210). The 32d-p210 cells showed modified Orai1/STIM1 ratio and reduced TRPC1 expression that could explain SOCE reduction. Decrease in SOCE and thrombin induced calcium entry was associated to reduced Nuclear Factor of Activated T cells (NFAT) nucleus translocation in 32d-p210 cells. We demonstrated that SOCE blockers enhanced cell mobility of 32d-p210 cells and reduced the proliferation rate in both 32d cell lines. TKI treatment slightly reduced the thrombin-induced response, but imatinib restored SOCE to the wild type level. Bcr-Abl is also known to deregulate Protein Kinase C (PKC), which was described to modulate calcium entries. We showed that PKC enhances SOCE and thrombin induced calcium entries in control cells while this effect is lost in Bcr-Abl-expressing cells. Conclusion The tyrosine kinase activity seems to regulate calcium entries probably not directly but through a global cellular reorganization involving a PKC pathway. Altogether, calcium entries are deregulated in Bcr-Abl-expressing cells and could represent an interesting therapeutic target in combination with TKI.
Collapse
|
28
|
Corbet C, Bastien E, Draoui N, Doix B, Mignion L, Jordan BF, Marchand A, Vanherck JC, Chaltin P, Schakman O, Becker HM, Riant O, Feron O. Interruption of lactate uptake by inhibiting mitochondrial pyruvate transport unravels direct antitumor and radiosensitizing effects. Nat Commun 2018; 9:1208. [PMID: 29572438 PMCID: PMC5865202 DOI: 10.1038/s41467-018-03525-0] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 02/20/2018] [Indexed: 12/21/2022] Open
Abstract
Lactate exchange between glycolytic and oxidative cancer cells is proposed to optimize tumor growth. Blocking lactate uptake through monocarboxylate transporter 1 (MCT1) represents an attractive therapeutic strategy but may stimulate glucose consumption by oxidative cancer cells. We report here that inhibition of mitochondrial pyruvate carrier (MPC) activity fulfils the tasks of blocking lactate use while preventing glucose oxidative metabolism. Using in vitro 13C-glucose and in vivo hyperpolarized 13C-pyruvate, we identify 7ACC2 as a potent inhibitor of mitochondrial pyruvate transport which consecutively blocks extracellular lactate uptake by promoting intracellular pyruvate accumulation. Also, while in spheroids MCT1 inhibition leads to cytostatic effects, MPC activity inhibition induces cytotoxic effects together with glycolysis stimulation and uncompensated inhibition of mitochondrial respiration. Hypoxia reduction obtained with 7ACC2 is further shown to sensitize tumor xenografts to radiotherapy. This study positions MPC as a control point for lactate metabolism and expands on the anticancer potential of MPC inhibition. Tumor cells can fuel their metabolism with lactate. Here the authors show that inhibition of mitochondrial pyruvate carrier (MPC) blocks extracellular lactate uptake by promoting intracellular pyruvate accumulation and inhibits oxidative metabolism, ultimately resulting in cytotoxicity and radiosensitization.
Collapse
Affiliation(s)
- Cyril Corbet
- Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, 53 Avenue Mounier B1.53.09, Brussels, B-1200, Belgium.
| | - Estelle Bastien
- Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, 53 Avenue Mounier B1.53.09, Brussels, B-1200, Belgium
| | - Nihed Draoui
- Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, 53 Avenue Mounier B1.53.09, Brussels, B-1200, Belgium.,Department of Oncology, Laboratory of Angiogenesis and Vascular Metabolism, and Vesalius Research Center, VIB, Herestraat 49 box 912, B-3000, Leuven, Belgium
| | - Bastien Doix
- Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, 53 Avenue Mounier B1.53.09, Brussels, B-1200, Belgium
| | - Lionel Mignion
- Louvain Drug Research Institute, Biomedical Magnetic Resonance Research Group, Université catholique de Louvain, 73 Avenue Mounier, REMA 73.08, Brussels, B-1200, Belgium
| | - Bénédicte F Jordan
- Louvain Drug Research Institute, Biomedical Magnetic Resonance Research Group, Université catholique de Louvain, 73 Avenue Mounier, REMA 73.08, Brussels, B-1200, Belgium
| | - Arnaud Marchand
- CISTIM Leuven, Center for Drug Design and Discovery (CD3) KU Leuven, Gaston Geenslaan 2, Heverlee, 3001, Belgium
| | - Jean-Christophe Vanherck
- CISTIM Leuven, Center for Drug Design and Discovery (CD3) KU Leuven, Gaston Geenslaan 2, Heverlee, 3001, Belgium
| | - Patrick Chaltin
- CISTIM Leuven, Center for Drug Design and Discovery (CD3) KU Leuven, Gaston Geenslaan 2, Heverlee, 3001, Belgium
| | - Olivier Schakman
- Laboratory of Cell Physiology, Institute of Neuroscience, Université catholique de Louvain, Brussels, B-1200, Belgium
| | - Holger M Becker
- Division of Zoology/Membrane Transport, FB Biologie, TU Kaiserslautern, P.O. Box 3049, Kaiserslautern, D-67653, Germany.,Institute of Physiological Chemistry, University of Veterinary Medicine Hannover, Bünteweg 17, Hannover, D-30559, Germany
| | - Olivier Riant
- Institute of Condensed Matter and Nanosciences, MOST division, Place Louis Pasteur, Université catholique de Louvain, Louvain-la-Neuve, B-1348, Belgium
| | - Olivier Feron
- Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, 53 Avenue Mounier B1.53.09, Brussels, B-1200, Belgium.
| |
Collapse
|
29
|
Oh MR, Lee KJ, Huang M, Kim JO, Kim DH, Cho CH, Lee EH. STIM2 regulates both intracellular Ca 2+ distribution and Ca 2+ movement in skeletal myotubes. Sci Rep 2017; 7:17936. [PMID: 29263348 PMCID: PMC5738411 DOI: 10.1038/s41598-017-18256-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 12/08/2017] [Indexed: 01/09/2023] Open
Abstract
Stromal interaction molecule 1 (STIM1) along with Orai1 mediates extracellular Ca2+ entry into the cytosol through a store-operated Ca2+ entry (SOCE) mechanism in various tissues including skeletal muscle. However, the role(s) of STIM2, a homolog of STIM1, in skeletal muscle has not been well addressed. The present study, first, was focused on searching for STIM2-binding proteins from among proteins mediating skeletal muscle functions. This study used a binding assay, quadrupole time-of-flight mass spectrometry, and co-immunoprecipitation assay with bona-fide STIM2- and SERCA1a-expressing rabbit skeletal muscle. The region for amino acids from 453 to 729 of STIM2 binds to sarcoplasmic/endoplasmic reticulum Ca2+-ATPase 1a (SERCA1a). Next, oxalate-supported 45Ca2+-uptake experiments and various single-myotube Ca2+ imaging experiments using STIM2-knockdown mouse primary skeletal myotubes have suggested that STIM2 attenuates SERCA1a activity during skeletal muscle contraction, which contributes to the intracellular Ca2+ distribution between the cytosol and the SR at rest. In addition, STIM2 regulates Ca2+ movement through RyR1 during skeletal muscle contraction as well as SOCE. Therefore, via regulation of SERCA1a activity, STIM2 regulates both intracellular Ca2+ distribution and Ca2+ movement in skeletal muscle, which makes it both similar to, yet different from, STIM1.
Collapse
Affiliation(s)
- Mi Ri Oh
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Keon Jin Lee
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Mei Huang
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Jin Ock Kim
- School of Life Sciences, GIST, Gwangju, 61005, Republic of Korea
| | - Do Han Kim
- School of Life Sciences, GIST, Gwangju, 61005, Republic of Korea
| | - Chung-Hyun Cho
- Department of Pharmacology, College of Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Eun Hui Lee
- Department of Physiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
| |
Collapse
|
30
|
Krout D, Schaar A, Sun Y, Sukumaran P, Roemmich JN, Singh BB, Claycombe-Larson KJ. The TRPC1 Ca 2+-permeable channel inhibits exercise-induced protection against high-fat diet-induced obesity and type II diabetes. J Biol Chem 2017; 292:20799-20807. [PMID: 29074621 PMCID: PMC5733613 DOI: 10.1074/jbc.m117.809954] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/24/2017] [Indexed: 12/31/2022] Open
Abstract
The transient receptor potential canonical channel-1 (TRPC1) is a Ca2+-permeable channel found in key metabolic organs and tissues, including the hypothalamus, adipose tissue, and skeletal muscle. Loss of TRPC1 may alter the regulation of cellular energy metabolism resulting in insulin resistance thereby leading to diabetes. Exercise reduces insulin resistance, but it is not known whether TRPC1 is involved in exercise-induced insulin sensitivity. The role of TRPC1 in adiposity and obesity-associated metabolic diseases has not yet been determined. Our results show that TRPC1 functions as a major Ca2+ entry channel in adipocytes. We have also shown that fat mass and fasting glucose concentrations were lower in TRPC1 KO mice that were fed a high-fat (HF) (45% fat) diet and exercised as compared with WT mice fed a HF diet and exercised. Adipocyte numbers were decreased in both subcutaneous and visceral adipose tissue of TRPC1 KO mice fed a HF diet and exercised. Finally, autophagy markers were decreased and apoptosis markers increased in TRPC1 KO mice fed a HF diet and exercised. Overall, these findings suggest that TRPC1 plays an important role in the regulation of adiposity via autophagy and apoptosis and that TRPC1 inhibits the positive effect of exercise on type II diabetes risk under a HF diet-induced obesity environment.
Collapse
Affiliation(s)
- Danielle Krout
- From the Grand Forks Human Nutrition Research Center, U.S. Department of Agriculture, Agricultural Research Service (USDA-ARS), Grand Forks, North Dakota 58203 and
| | - Anne Schaar
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, North Dakota 58203
| | - Yuyang Sun
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, North Dakota 58203
| | - Pramod Sukumaran
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, North Dakota 58203
| | - James N Roemmich
- From the Grand Forks Human Nutrition Research Center, U.S. Department of Agriculture, Agricultural Research Service (USDA-ARS), Grand Forks, North Dakota 58203 and
| | - Brij B Singh
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, North Dakota 58203
| | - Kate J Claycombe-Larson
- From the Grand Forks Human Nutrition Research Center, U.S. Department of Agriculture, Agricultural Research Service (USDA-ARS), Grand Forks, North Dakota 58203 and
| |
Collapse
|
31
|
A focus on extracellular Ca 2+ entry into skeletal muscle. Exp Mol Med 2017; 49:e378. [PMID: 28912570 PMCID: PMC5628281 DOI: 10.1038/emm.2017.208] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 06/16/2017] [Accepted: 06/28/2017] [Indexed: 01/06/2023] Open
Abstract
The main task of skeletal muscle is contraction and relaxation for body movement and posture maintenance. During contraction and relaxation, Ca2+ in the cytosol has a critical role in activating and deactivating a series of contractile proteins. In skeletal muscle, the cytosolic Ca2+ level is mainly determined by Ca2+ movements between the cytosol and the sarcoplasmic reticulum. The importance of Ca2+ entry from extracellular spaces to the cytosol has gained significant attention over the past decade. Store-operated Ca2+ entry with a low amplitude and relatively slow kinetics is a main extracellular Ca2+ entryway into skeletal muscle. Herein, recent studies on extracellular Ca2+ entry into skeletal muscle are reviewed along with descriptions of the proteins that are related to extracellular Ca2+ entry and their influences on skeletal muscle function and disease.
Collapse
|
32
|
Transient receptor potential vanilloid 2 function regulates cardiac hypertrophy via stretch-induced activation. J Hypertens 2017; 35:602-611. [PMID: 28009703 DOI: 10.1097/hjh.0000000000001213] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVE Hypertension (increased afterload) results in cardiomyocyte hypertrophy leading to left ventricular hypertrophy and subsequently, heart failure with preserved ejection fraction. This study was performed to test the hypothesis that transient receptor potential vanilloid 2 subtype (TRPV2) function regulates hypertrophy under increased afterload conditions. METHODS We used functional (pore specific) TRPV2 knockout mice to evaluate the effects of increased afterload-induced stretch on cardiac size and function via transverse aortic constriction (TAC) as well as hypertrophic stimuli including adrenergic and angiotensin stimulation via subcutaneous pumps. Wild-type animals served as control for all experiments. Expression and localization of TRPV2 was investigated in wild-type cardiac samples. Changes in cardiac function were measured in vivo via echocardiography and invasive catheterization. Molecular changes, including protein and real-time PCR markers of hypertrophy, were measured in addition to myocyte size. RESULTS TRPV2 is significantly upregulated in wild-type mice after TAC, though not in response to beta-adrenergic or angiotensin stimulation. TAC-induced stretch stimulus caused an upregulation of TRPV2 in the sarcolemmal membrane. The absence of functional TRPV2 resulted in significantly reduced left ventricular hypertrophy after TAC, though not in response to beta-adrenergic or angiotensin stimulation. The decreased development of hypertrophy was not associated with significant deterioration of cardiac function. CONCLUSION We conclude that TRPV2 function, as a stretch-activated channel, regulates the development of cardiomyocyte hypertrophy in response to increased afterload.
Collapse
|
33
|
Suchyna TM. Piezo channels and GsMTx4: Two milestones in our understanding of excitatory mechanosensitive channels and their role in pathology. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2017; 130:244-253. [PMID: 28778608 DOI: 10.1016/j.pbiomolbio.2017.07.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 07/17/2017] [Accepted: 07/21/2017] [Indexed: 12/19/2022]
Abstract
Discovery of Piezo channels and the reporting of their sensitivity to the inhibitor GsMTx4 were important milestones in the study of non-selective cationic mechanosensitive channels (MSCs) in normal physiology and pathogenesis. GsMTx4 had been used for years to investigate the functional role of cationic MSCs, especially in muscle tissue, but with little understanding of its target or inhibitory mechanism. The sensitivity of Piezo channels to bilayer stress and its robust mechanosensitivity when expressed in heterologous systems were keys to determining GsMTx4's mechanism of action. However, questions remain regarding Piezo's role in muscle function due to the non-selective nature of GsMTx4 inhibition toward membrane mechanoenzymes and the implication of MCS channel types by genetic knockdown. Evidence supporting Piezo like activity, at least in the developmental stages of muscle, is presented. While the MSC targets of GsMTx4 in muscle pathology are unclear, its muscle protective effects are clearly demonstrated in two recent in situ studies on normal cardiomyocytes and dystrophic skeletal muscle. The muscle protective function may be due to the combined effect of GsMTx4's inhibitory action on cationic MSCs like Piezo and TRP, and its potentiation of repolarizing K+ selective MSCs like K2P and SAKCa. Paradoxically, the potent in vitro action of GsMTx4 on many physiological functions seems to conflict with its lack of in situ side-effects on normal animal physiology. Future investigations into cytoskeletal control of sarcolemma mechanics and the suspected inclusion of MSCs in membrane micro/nano sized domains with distinct mechanical properties will aide our understanding of this dichotomy.
Collapse
Affiliation(s)
- Thomas M Suchyna
- University of Buffalo, Dept. of Physiology and Biophysics, Buffalo, NY, USA.
| |
Collapse
|
34
|
Kviklyte S, Vertommen D, Yerna X, Andersén H, Xu X, Gailly P, Bohlooly-Y M, Oscarsson J, Rider MH. Effects of genetic deletion of soluble 5'-nucleotidases NT5C1A and NT5C2 on AMPK activation and nucleotide levels in contracting mouse skeletal muscles. Am J Physiol Endocrinol Metab 2017; 313:E48-E62. [PMID: 28325731 DOI: 10.1152/ajpendo.00304.2016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 02/24/2017] [Accepted: 03/13/2017] [Indexed: 11/22/2022]
Abstract
AMP-activated protein kinase (AMPK) plays a key role in energy homeostasis and is activated in response to contraction-induced ATP depletion in skeletal muscle via a rise in intracellular AMP/ADP concentrations. AMP can be deaminated by AMP-deaminase (AMPD) to IMP, which is hydrolyzed to inosine by cytosolic 5'-nucleotidase II (NT5C2). AMP can also be hydrolyzed to adenosine by cytosolic 5'-nucleotidase 1A (NT5C1A). Previous gene silencing and overexpression studies indicated control of AMPK activation by NT5C enzymes. In the present study using gene knockout mouse models, we investigated the effects of NT5C1A and NT5C2 deletion on intracellular adenine nucleotide levels and AMPK activation in electrically stimulated skeletal muscles. Surprisingly, NT5C enzyme knockout did not lead to enhanced AMP or ADP concentrations in response to contraction, with no potentiation of increases in AMPK activity in extensor digitorum longus (EDL) and soleus mouse muscles. Moreover, dual blockade of AMP metabolism in EDL using an AMPD inhibitor combined with NT5C1A deletion did not enhance rises in AMP and ADP or increased AMPK activation by electrical stimulation. The results on muscles from the NT5C knockout mice contradict previous findings where AMP levels and AMPK activity were shown to be modulated by NT5C enzymes.
Collapse
Affiliation(s)
- Samanta Kviklyte
- de Duve Institute, Université catholique de Louvain, Brussels, Belgium
| | - Didier Vertommen
- de Duve Institute, Université catholique de Louvain, Brussels, Belgium
| | - Xavier Yerna
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium; and
| | | | - Xiufeng Xu
- AstraZeneca Research and Development, Mölndal, Sweden
| | - Philippe Gailly
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium; and
| | | | - Jan Oscarsson
- AstraZeneca Research and Development, Mölndal, Sweden
| | - Mark H Rider
- de Duve Institute, Université catholique de Louvain, Brussels, Belgium;
| |
Collapse
|
35
|
Abou-Samra M, Boursereau R, Lecompte S, Noel L, Brichard SM. Potential Therapeutic Action of Adiponectin in Duchenne Muscular Dystrophy. THE AMERICAN JOURNAL OF PATHOLOGY 2017; 187:1577-1585. [PMID: 28463682 DOI: 10.1016/j.ajpath.2017.02.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 02/27/2017] [Indexed: 01/11/2023]
Abstract
Adiponectin (ApN) is a hormone that exhibits anti-inflammatory effects on skeletal muscle exposed to acute and chronic inflammation. We have previously tested the implication of ApN in Duchenne muscular dystrophy (DMD) using mdx mice, a model of DMD, and by generating transgenic mdx mice overexpressing ApN. We showed that ApN can act as a preventive agent and delay disease progression by reducing muscle inflammation/injury and improving force/myogenesis. Herein, we took an opposite approach and crossed mdx mice with ApN knockout mice, to obtain mdx mice with ApN depletion. The aims were to test whether ApN deficiency could worsen the mdx phenotype and whether ApN supplementation can reverse several muscle abnormalities once the disease is settled. mdx-knockout mice exhibited lower muscle force/endurance as well as increased muscle damage when compared to regular mdx mice. Local administration of the ApN gene significantly reduced the expression of several oxidative stress/inflammatory markers and increased the expression of myogenic markers in the skeletal muscle. Finally, the presence of ApN markedly reduced the activity of NF-κB, a key player in muscle inflammation and myogenesis. ApN proves to be a powerful protector of the skeletal muscle capable of reversing the disease progression, thus making it a potential therapeutic agent for DMD.
Collapse
Affiliation(s)
- Michel Abou-Samra
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Catholic University of Louvain, Brussels, Belgium
| | - Raphaël Boursereau
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Catholic University of Louvain, Brussels, Belgium
| | - Sophie Lecompte
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Catholic University of Louvain, Brussels, Belgium
| | - Laurence Noel
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Catholic University of Louvain, Brussels, Belgium
| | - Sonia M Brichard
- Endocrinology, Diabetes and Nutrition Unit, Institute of Experimental and Clinical Research, Medical Sector, Catholic University of Louvain, Brussels, Belgium.
| |
Collapse
|
36
|
Murakami K, Osanai T, Tanaka M, Nishizaki K, Kinjo T, Tanno T, Ishida Y, Suzuki A, Endo T, Tomita H, Okumura K. Enhanced transient receptor potential channel-mediated Ca2+influx in the cells with phospholipase C-δ1 overexpression: its possible role in coronary artery spasm. Fundam Clin Pharmacol 2017; 31:383-391. [DOI: 10.1111/fcp.12269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 01/17/2017] [Indexed: 02/04/2023]
Affiliation(s)
- Kazuo Murakami
- Department of Cardiology; Hirosaki University Graduate School of Medicine; 5 Zaifu-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Tomohiro Osanai
- Department of Nursing; Hirosaki University Graduate School of Health Science; 66-1 Hon-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Makoto Tanaka
- Department of Hypertension and Stroke Internal Medicine; Hirosaki University Graduate School of Medicine; 5 Zaifu-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Kimitaka Nishizaki
- Department of Cardiology; Hirosaki University Graduate School of Medicine; 5 Zaifu-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Takahiko Kinjo
- Department of Cardiology; Hirosaki University Graduate School of Medicine; 5 Zaifu-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Tomohiro Tanno
- Department of Cardiology; Hirosaki University Graduate School of Medicine; 5 Zaifu-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Yuji Ishida
- Department of Cardiology; Hirosaki University Graduate School of Medicine; 5 Zaifu-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Akiko Suzuki
- Department of Cardiology; Hirosaki University Graduate School of Medicine; 5 Zaifu-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Tomohide Endo
- Department of Cardiology; Hirosaki University Graduate School of Medicine; 5 Zaifu-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Hirofumi Tomita
- Department of Cardiology; Hirosaki University Graduate School of Medicine; 5 Zaifu-cho Hirosaki Hirosaki Aomori Prefecture Japan
| | - Ken Okumura
- Division of Cardiology; Saiseikai Kumamoto Hospital; 5-3-1 Chikami Minamiku Kumamoto Kumamoto Kumamoto Prefecture Japan
| |
Collapse
|
37
|
Antigny F, Sabourin J, Saüc S, Bernheim L, Koenig S, Frieden M. TRPC1 and TRPC4 channels functionally interact with STIM1L to promote myogenesis and maintain fast repetitive Ca 2+ release in human myotubes. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017; 1864:806-813. [PMID: 28185894 DOI: 10.1016/j.bbamcr.2017.02.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/25/2017] [Accepted: 02/03/2017] [Indexed: 12/29/2022]
Abstract
STIM1 and Orai1 are essential players of store-operated Ca2+ entry (SOCE) in human skeletal muscle cells and are required for adult muscle differentiation. Besides these two proteins, TRPC (transient receptor potential canonical) channels and STIM1L (a longer STIM1 isoform) are also present on muscle cells. In the present study, we assessed the role of TRPC1, TRPC4 and STIM1L in SOCE, in the maintenance of repetitive Ca2+ transients and in muscle differentiation. Knockdown of TRPC1 and TRPC4 reduced SOCE by about 50% and significantly delayed the onset of Ca2+ entry, both effects similar to STIM1L invalidation. Upon store depletion, TRPC1 and TRPC4 appeared to interact preferentially with STIM1L compared to STIM1. STIM1L invalidation affected myoblast differentiation, with the formation of smaller myotubes, an effect similar to what we reported for TRPC1 and TRPC4 knockdown. On the contrary, the overexpression of STIM1L leads to the formation of larger myotubes. All together, these data strongly suggest that STIM1L and TRPC1/4 are working together in myotubes to ensure efficient store refilling and a proper differentiation program.
Collapse
Affiliation(s)
- Fabrice Antigny
- Department of Basic Neurosciences, Geneva Medical Center, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland
| | - Jessica Sabourin
- Inserm UMR S1180, Faculté de Pharmacie, Université Paris Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Sophie Saüc
- Department of Basic Neurosciences, Geneva Medical Center, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland; Department of Cell Physiology and Metabolism, Geneva Medical Center, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland
| | - Laurent Bernheim
- Department of Basic Neurosciences, Geneva Medical Center, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland
| | - Stéphane Koenig
- Department of Basic Neurosciences, Geneva Medical Center, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland
| | - Maud Frieden
- Department of Cell Physiology and Metabolism, Geneva Medical Center, 1, Rue Michel Servet, 1211 Geneva 4, Switzerland.
| |
Collapse
|
38
|
Saüc S, Frieden M. Neurological and Motor Disorders: TRPC in the Skeletal Muscle. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 993:557-575. [PMID: 28900933 DOI: 10.1007/978-3-319-57732-6_28] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Transient receptor potential canonical (TRPC) channels belong to the large family of TRPs that are mostly nonselective cation channels with a great variety of gating mechanisms. TRPC are composed of seven members that can all be activated downstream of agonist-induced phospholipase C stimulation, but some members are also stretch-activated and/or are part of the store-operated Ca2+ entry (SOCE) pathway. Skeletal muscles generate contraction via an explosive increase of cytosolic Ca2+ concentration resulting almost exclusively from sarcoplasmic reticulum Ca2+ channel opening. Even if neglected for a long time, it is now commonly accepted that Ca2+ entry via SOCE and other routes is essential to sustain contractions of the skeletal muscle. In addition, Ca2+ influx is required during muscle regeneration, and alteration of the influx is associated with myopathies. In this chapter, we review the implication of TRPC channels at different stages of muscle regeneration, in adult muscle fibers, and discuss their implication in myopathies.
Collapse
Affiliation(s)
- Sophie Saüc
- Department of Cell Physiology and Metabolism, University of Geneva, 1 rue Michel Servet, 1211, Geneva, Switzerland
| | - Maud Frieden
- Department of Cell Physiology and Metabolism, University of Geneva, 1 rue Michel Servet, 1211, Geneva, Switzerland.
| |
Collapse
|
39
|
STIM-TRP Pathways and Microdomain Organization: Contribution of TRPC1 in Store-Operated Ca 2+ Entry: Impact on Ca 2+ Signaling and Cell Function. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 993:159-188. [PMID: 28900914 DOI: 10.1007/978-3-319-57732-6_9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Store-operated calcium entry (SOCE) is a ubiquitous Ca2+ entry pathway that is activated in response to depletion of ER-Ca2+ stores and critically controls the regulation of physiological functions in a wide variety of cell types. The transient receptor potential canonical (TRPC) channels (TRPCs 1-7), which are activated by stimuli leading to PIP2 hydrolysis, were first identified as molecular components of SOCE channels. While TRPC1 was associated with SOCE and regulation of function in several cell types, none of the TRPC members displayed I CRAC, the store-operated current identified in lymphocytes and mast cells. Intensive search finally led to the identification of Orai1 and STIM1 as the primary components of the CRAC channel. Orai1 was established as the pore-forming channel protein and STIM1 as the ER-Ca2+ sensor protein involved in activation of Orai1. STIM1 also activates TRPC1 via a distinct domain in its C-terminus. However, TRPC1 function depends on Orai1-mediated Ca2+ entry, which triggers recruitment of TRPC1 into the plasma membrane where it is activated by STIM1. TRPC1 and Orai1 form distinct store-operated Ca2+ channels that regulate specific cellular functions. It is now clearly established that regulation of TRPC1 trafficking can change plasma membrane levels of the channel, the phenotype of the store-operated Ca2+ current, as well as pattern of SOCE-mediated [Ca2+]i signals. Thus, TRPC1 is activated downstream of Orai1 and modifies the initial [Ca2+]i signal generated by Orai1. This review will highlight current concepts of the activation and regulation of TRPC1 channels and its impact on cell function.
Collapse
|
40
|
Mitsugumin 53 regulates extracellular Ca 2+ entry and intracellular Ca 2+ release via Orai1 and RyR1 in skeletal muscle. Sci Rep 2016; 6:36909. [PMID: 27841305 PMCID: PMC5107933 DOI: 10.1038/srep36909] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 10/24/2016] [Indexed: 12/19/2022] Open
Abstract
Mitsugumin 53 (MG53) participates in the membrane repair of various cells, and skeletal muscle is the major tissue that expresses MG53. Except for the regulatory effects of MG53 on SERCA1a, the role(s) of MG53 in the unique functions of skeletal muscle such as muscle contraction have not been well examined. Here, a new MG53-interacting protein, Orai1, is identified in skeletal muscle. To examine the functional relevance of the MG53-Orai1 interaction, MG53 was over-expressed in mouse primary or C2C12 skeletal myotubes and the functional properties of the myotubes were examined using cell physiological and biochemical approaches. The PRY-SPRY region of MG53 binds to Orai1, and MG53 and Orai1 are co-localized in the plasma membrane of skeletal myotubes. MG53-Orai1 interaction enhances extracellular Ca2+ entry via a store-operated Ca2+ entry (SOCE) mechanism in skeletal myotubes. Interestingly, skeletal myotubes over-expressing MG53 or PRY-SPRY display a reduced intracellular Ca2+ release in response to K+-membrane depolarization or caffeine stimulation, suggesting a reduction in RyR1 channel activity. Expressions of TRPC3, TRPC4, and calmodulin 1 are increased in the myotubes, and MG53 directly binds to TRPC3, which suggests a possibility that TRPC3 also participates in the enhanced extracellular Ca2+ entry. Thus, MG53 could participate in regulating extracellular Ca2+ entry via Orai1 during SOCE and also intracellular Ca2+ release via RyR1 during skeletal muscle contraction.
Collapse
|
41
|
Lepannetier S, Zanou N, Yerna X, Emeriau N, Dufour I, Masquelier J, Muccioli G, Tajeddine N, Gailly P. Sphingosine-1-phosphate-activated TRPC1 channel controls chemotaxis of glioblastoma cells. Cell Calcium 2016; 60:373-383. [PMID: 27638096 DOI: 10.1016/j.ceca.2016.09.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/25/2016] [Accepted: 09/08/2016] [Indexed: 01/21/2023]
Abstract
TRP channels are involved in the control of a broad range of cellular functions such as cell proliferation and motility. We investigated the gating mechanism of TRPC1 channel and its role in U251 glioblastoma cells migration in response to chemotaxis by platelet-derived growth factor (PDGF). PDGF induced an influx of Ca2+ that was partially inhibited after pretreatment of the cells with SKI-II, a specific inhibitor of sphingosine kinase producing sphingosine-1-P (S1P). S1P by itself also induced an entry of Ca2+. Interestingly, PDGF- and S1P-induced entries of Ca2+ were lost in siRNA-TRPC1 treated cells. PDGF-induced chemotaxis of U251 cells was dramatically inhibited in cells treated with SKI-II. This effect was almost completely rescued by addition of synthetic S1P. Chemotaxis was also completely lost in siRNA-TRPC1 treated cells and interestingly, the rescue of migration of cells treated with SKI-II by S1P was dependent on the expression of TRPC1. Immunocytochemistry revealed that, in response to PDGF, TRPC1 translocated from inside of the cell to the front of migration (lamellipodes). This effect seemed PI3K dependent as it was inhibited by cell pre-treatment with LY294002, a PI3-kinase inhibitor. Our results thus identify S1P as a potential activator of TRPC1, a channel involved in cell orientation during chemotaxis by PDGF.
Collapse
Affiliation(s)
- Sophie Lepannetier
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Nadège Zanou
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Xavier Yerna
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Noémie Emeriau
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Inès Dufour
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Julien Masquelier
- Université catholique de Louvain, Louvain Drug Research Institute, av. Mounier 72, box B1.72.01, 1200 Brussels, Belgium
| | - Giulio Muccioli
- Université catholique de Louvain, Louvain Drug Research Institute, av. Mounier 72, box B1.72.01, 1200 Brussels, Belgium
| | - Nicolas Tajeddine
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Philippe Gailly
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium.
| |
Collapse
|
42
|
Carrell EM, Coppola AR, McBride HJ, Dirksen RT. Orai1 enhances muscle endurance by promoting fatigue-resistant type I fiber content but not through acute store-operated Ca2+ entry. FASEB J 2016; 30:4109-4119. [PMID: 27587568 DOI: 10.1096/fj.201600621r] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 08/15/2016] [Indexed: 02/06/2023]
Abstract
Orai1 is a transmembrane protein that forms homomeric, calcium-selective channels activated by stromal interaction molecule 1 (STIM1) after depletion of intracellular calcium stores. In adult skeletal muscle, depletion of sarcoplasmic reticulum calcium activates STIM1/Orai1-dependent store-operated calcium entry. Here, we used constitutive and inducible muscle-specific Orai1-knockout (KO) mice to determine the acute and long-term developmental effects of Orai1 ablation on muscle structure and function. Skeletal muscles from constitutive, muscle-specific Orai-KO mice exhibited normal postnatal growth and fiber type differentiation. However, a significant reduction in fiber cross-sectional area occurred by 3 mo of age, with the most profound reduction observed in oxidative, fatigue-resistant fiber types. Soleus muscles of constitutive Orai-KO mice exhibited a reduction in unique type I fibers, concomitant with an increase in hybrid fibers expressing both type I and type IIA myosins. Additionally, ex vivo force measurements showed reduced maximal specific force and in vivo exercise assays revealed reduced endurance in constitutive muscle-specific Orai-KO mice. Using tamoxifen-inducible, muscle-specific Orai-KO mice, these functional deficits were found to be the result of the delayed fiber changes resulting from an early developmental loss of Orai1 and not the result of an acute loss of Orai1-dependent store-operated calcium entry.-Carrell, E. M., Coppola, A. R., McBride, H. J., Dirksen, R. T. Orai1 enhances muscle endurance by promoting fatigue-resistant type I fiber content but not through acute store-operated Ca2+ entry.
Collapse
Affiliation(s)
- Ellie M Carrell
- Department of Physiology and Pharmacology, University of Rochester, Rochester, New York, USA; and
| | - Aundrea R Coppola
- Department of Inflammation Research, Amgen Incorporated, Thousand Oaks, California, USA
| | - Helen J McBride
- Department of Inflammation Research, Amgen Incorporated, Thousand Oaks, California, USA
| | - Robert T Dirksen
- Department of Physiology and Pharmacology, University of Rochester, Rochester, New York, USA; and
| |
Collapse
|
43
|
Jardin I, Rosado JA. STIM and calcium channel complexes in cancer. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:1418-26. [DOI: 10.1016/j.bbamcr.2015.10.003] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 09/25/2015] [Accepted: 10/07/2015] [Indexed: 12/12/2022]
|
44
|
Allen DG, Whitehead NP, Froehner SC. Absence of Dystrophin Disrupts Skeletal Muscle Signaling: Roles of Ca2+, Reactive Oxygen Species, and Nitric Oxide in the Development of Muscular Dystrophy. Physiol Rev 2016; 96:253-305. [PMID: 26676145 DOI: 10.1152/physrev.00007.2015] [Citation(s) in RCA: 272] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Dystrophin is a long rod-shaped protein that connects the subsarcolemmal cytoskeleton to a complex of proteins in the surface membrane (dystrophin protein complex, DPC), with further connections via laminin to other extracellular matrix proteins. Initially considered a structural complex that protected the sarcolemma from mechanical damage, the DPC is now known to serve as a scaffold for numerous signaling proteins. Absence or reduced expression of dystrophin or many of the DPC components cause the muscular dystrophies, a group of inherited diseases in which repeated bouts of muscle damage lead to atrophy and fibrosis, and eventually muscle degeneration. The normal function of dystrophin is poorly defined. In its absence a complex series of changes occur with multiple muscle proteins showing reduced or increased expression or being modified in various ways. In this review, we will consider the various proteins whose expression and function is changed in muscular dystrophies, focusing on Ca(2+)-permeable channels, nitric oxide synthase, NADPH oxidase, and caveolins. Excessive Ca(2+) entry, increased membrane permeability, disordered caveolar function, and increased levels of reactive oxygen species are early changes in the disease, and the hypotheses for these phenomena will be critically considered. The aim of the review is to define the early damage pathways in muscular dystrophy which might be appropriate targets for therapy designed to minimize the muscle degeneration and slow the progression of the disease.
Collapse
Affiliation(s)
- David G Allen
- Sydney Medical School & Bosch Institute, University of Sydney, New South Wales, Australia; and Department of Physiology & Biophysics, University of Washington, Seattle, Washington
| | - Nicholas P Whitehead
- Sydney Medical School & Bosch Institute, University of Sydney, New South Wales, Australia; and Department of Physiology & Biophysics, University of Washington, Seattle, Washington
| | - Stanley C Froehner
- Sydney Medical School & Bosch Institute, University of Sydney, New South Wales, Australia; and Department of Physiology & Biophysics, University of Washington, Seattle, Washington
| |
Collapse
|
45
|
Xia L, Cheung KK, Yeung SS, Yeung EW. The involvement of transient receptor potential canonical type 1 in skeletal muscle regrowth after unloading-induced atrophy. J Physiol 2016; 594:3111-26. [PMID: 26752511 DOI: 10.1113/jp271705] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 01/06/2016] [Indexed: 02/05/2023] Open
Abstract
KEY POINTS Decreased mechanical loading results in skeletal muscle atrophy. The transient receptor potential canonical type 1 (TRPC1) protein is implicated in this process. Investigation of the regulation of TRPC1 in vivo has rarely been reported. In the present study, we employ the mouse hindlimb unloading and reloading model to examine the involvement of TRPC1 in the regulation of muscle atrophy and regrowth, respectively. We establish the physiological relevance of the concept that manipulation of TRPC1 could interfere with muscle regrowth processes following an atrophy-inducing event. Specifically, we show that suppressing TRPC1 expression during reloading impairs the recovery of the muscle mass and slow myosin heavy chain profile. Calcineurin appears to be part of the signalling pathway involved in the regulation of TRPC1 expression during muscle regrowth. These results provide new insights concerning the function of TRPC1. Interventions targeting TRPC1 or its downstream or upstream pathways could be useful for promoting muscle regeneration. ABSTRACT Decreased mechanical loading, such as bed rest, results in skeletal muscle atrophy. The functional consequences of decreased mechanical loading include a loss of muscle mass and decreased muscle strength, particularly in anti-gravity muscles. The purpose of this investigation was to clarify the regulatory role of the transient receptor potential canonical type 1 (TRPC1) protein during muscle atrophy and regrowth. Mice were subjected to 14 days of hindlimb unloading followed by 3, 7, 14 and 28 days of reloading. Weight-bearing mice were used as controls. TRPC1 expression in the soleus muscle decreased significantly and persisted at 7 days of reloading. Small interfering RNA (siRNA)-mediated downregulation of TRPC1 in weight-bearing soleus muscles resulted in a reduced muscle mass and a reduced myofibre cross-sectional area (CSA). Microinjecting siRNA into soleus muscles in vivo after 7 days of reloading provided further evidence for the role of TRPC1 in regulating muscle regrowth. Myofibre CSA, as well as the percentage of slow myosin heavy chain-positive myofibres, was significantly lower in TRPC1-siRNA-expressing muscles than in control muscles after 14 days of reloading. Additionally, inhibition of calcineurin (CaN) activity downregulated TRPC1 expression in both weight-bearing and reloaded muscles, suggesting a possible association between CaN and TRPC1 during skeletal muscle regrowth.
Collapse
Affiliation(s)
- Lu Xia
- Muscle Physiology Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.,Rehabilitation Key Laboratory of Sichuan Province, Department of Rehabilitation, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Kwok-Kuen Cheung
- Muscle Physiology Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Simon S Yeung
- Muscle Physiology Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Ella W Yeung
- Muscle Physiology Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| |
Collapse
|
46
|
Shapovalov G, Ritaine A, Skryma R, Prevarskaya N. Role of TRP ion channels in cancer and tumorigenesis. Semin Immunopathol 2016; 38:357-69. [PMID: 26842901 DOI: 10.1007/s00281-015-0525-1] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 09/03/2015] [Indexed: 12/12/2022]
Abstract
Transient receptor potential (TRP) channels are recently identified proteins that form a versatile family of ion channels, the majority of which are calcium permeable and exhibit complex regulatory patterns with sensitivity to multiple environmental factors. While this sensitivity has captured early attention, leading to recognition of TRP channels as environmental and chemical sensors, many later studies concentrated on the regulation of intracellular calcium by TRP channels. Due to mutations, dysregulation of ion channel gating or expression levels, normal spatiotemporal patterns of local Ca(2+) distribution become distorted. This causes deregulation of downstream effectors sensitive to changes in Ca(2+) homeostasis that, in turn, promotes pathophysiological cancer hallmarks, such as enhanced survival, proliferation and invasion. These observations give rise to the appreciation of the important contributions that TRP channels make to many cellular processes controlling cell fate and positioning these channels as important players in cancer regulation. This review discusses the accumulated scientific knowledge focused on TRP channel involvement in regulation of cell fate in various transformed tissues.
Collapse
Affiliation(s)
- George Shapovalov
- Inserm U1003, Equipe Labellisee par la Ligue Nationale Contre le Cancer, Universite de Sciences et Technologies de Lille (USTL), F-59655, Villeneuve d'Ascq, France.,Laboratory of Excellence, Ion Channels Science and Therapeutics, Université Lille I Sciences et Technologies, Villeneuve d'Ascq, France
| | - Abigael Ritaine
- Inserm U1003, Equipe Labellisee par la Ligue Nationale Contre le Cancer, Universite de Sciences et Technologies de Lille (USTL), F-59655, Villeneuve d'Ascq, France.,Laboratory of Excellence, Ion Channels Science and Therapeutics, Université Lille I Sciences et Technologies, Villeneuve d'Ascq, France
| | - Roman Skryma
- Inserm U1003, Equipe Labellisee par la Ligue Nationale Contre le Cancer, Universite de Sciences et Technologies de Lille (USTL), F-59655, Villeneuve d'Ascq, France.,Laboratory of Excellence, Ion Channels Science and Therapeutics, Université Lille I Sciences et Technologies, Villeneuve d'Ascq, France
| | - Natalia Prevarskaya
- Inserm U1003, Equipe Labellisee par la Ligue Nationale Contre le Cancer, Universite de Sciences et Technologies de Lille (USTL), F-59655, Villeneuve d'Ascq, France. .,Laboratory of Excellence, Ion Channels Science and Therapeutics, Université Lille I Sciences et Technologies, Villeneuve d'Ascq, France.
| |
Collapse
|
47
|
Ong HL, de Souza LB, Ambudkar IS. Role of TRPC Channels in Store-Operated Calcium Entry. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 898:87-109. [DOI: 10.1007/978-3-319-26974-0_5] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
48
|
Stanga S, Zanou N, Audouard E, Tasiaux B, Contino S, Vandermeulen G, René F, Loeffler JP, Clotman F, Gailly P, Dewachter I, Octave JN, Kienlen-Campard P. APP-dependent glial cell line-derived neurotrophic factor gene expression drives neuromuscular junction formation. FASEB J 2015; 30:1696-711. [PMID: 26718890 DOI: 10.1096/fj.15-278739] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 12/08/2015] [Indexed: 12/13/2022]
Abstract
Besides its crucial role in the pathogenesis of Alzheimer's disease, the knowledge of amyloid precursor protein (APP) physiologic functions remains surprisingly scarce. Here, we show that APP regulates the transcription of the glial cell line-derived neurotrophic factor (GDNF). APP-dependent regulation of GDNF expression affects muscle strength, muscular trophy, and both neuronal and muscular differentiation fundamental for neuromuscular junction (NMJ) maturation in vivo In a nerve-muscle coculture model set up to modelize NMJ formation in vitro, silencing of muscular APP induces a 30% decrease in secreted GDNF levels and a 40% decrease in the total number of NMJs together with a significant reduction in the density of acetylcholine vesicles at the presynaptic site and in neuronal maturation. These defects are rescued by GDNF expression in muscle cells in the conditions where muscular APP has been previously silenced. Expression of GDNF in muscles of amyloid precursor protein null mice corrected the aberrant synaptic morphology of NMJs. Our findings highlight for the first time that APP-dependent GDNF expression drives the process of NMJ formation, providing new insights into the link between APP gene regulatory network and physiologic functions.-Stanga, S., Zanou, N., Audouard, E., Tasiaux, B., Contino, S., Vandermeulen, G., René, F., Loeffler, J.-P., Clotman, F., Gailly, P., Dewachter, I., Octave, J.-N., Kienlen-Campard, P. APP-dependent glial cell line-derived neurotrophic factor gene expression drives neuromuscular junction formation.
Collapse
Affiliation(s)
- Serena Stanga
- Alzheimer Research Group, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Nadège Zanou
- Laboratory of Cell Physiology, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Emilie Audouard
- Laboratory of Neural Differentiation, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Bernadette Tasiaux
- Alzheimer Research Group, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Sabrina Contino
- Alzheimer Research Group, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Gaëlle Vandermeulen
- Advanced Drug Delivery and Biomaterials, Louvain Drug Research Institute, Université Catholique de Louvain, Brussels, Belgium; and
| | - Frédérique René
- Institut National de la Santé et de la Recherche Médicale, Unité 1118 Mécanismes Centraux et Périphériques de la Neurodégénérescence, Université de Strasbourg, Strasbourg Cedex, France
| | - Jean-Philippe Loeffler
- Institut National de la Santé et de la Recherche Médicale, Unité 1118 Mécanismes Centraux et Périphériques de la Neurodégénérescence, Université de Strasbourg, Strasbourg Cedex, France
| | - Frédéric Clotman
- Laboratory of Neural Differentiation, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Philippe Gailly
- Laboratory of Cell Physiology, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Ilse Dewachter
- Alzheimer Research Group, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Jean-Noël Octave
- Alzheimer Research Group, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Pascal Kienlen-Campard
- Alzheimer Research Group, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium;
| |
Collapse
|
49
|
From GTP and G proteins to TRPC channels: a personal account. J Mol Med (Berl) 2015; 93:941-53. [PMID: 26377676 DOI: 10.1007/s00109-015-1328-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 07/28/2015] [Indexed: 10/23/2022]
Abstract
By serendipity and good fortune, as a postdoctoral fellow in 1967, I landed at the right place at the right time, as I was allowed to investigate the mechanism by which hormones activate the enzyme adenylyl cyclase (then adenyl cyclase) in Martin Rodbell's Laboratory at the NIH in Bethesda, Maryland. The work uncovered first, the existence of receptors separate from the enzyme and then, the existence of transduction mechanisms requiring guanosine-5'-triphosphate (GTP) and Mg(2+). With my laboratory colleagues first and postdoctoral fellows after leaving NIH, I participated in the development of the field "signal transduction by G proteins," uncovered by molecular cloning several G-protein-coupled receptors (GPCRs) and became interested in both the molecular makeup of voltage-gated Ca channels and Ca2+ homeostasis downstream of activation of phospholipase C (PLC) by the Gq/11 signaling pathway. We were able to confirm the hypothesis that there would be mammalian homologues of the Drosophila "transient receptor potential" channel and discovered the existence of six of the seven mammalian genes, now called transient receptor potential canonical (TRPC) channels. In the present article, I summarize from a bird's eye view of what I feel were key findings along this path, not only from my laboratory but also from many others, that allowed for the present knowledge of cell signaling involving G proteins to evolve. Towards the end, I summarize roles of TRPC channels in health and disease.
Collapse
|
50
|
Naticchioni M, Karani R, Smith MA, Onusko E, Robbins N, Jiang M, Radzyukevich T, Fulford L, Gao X, Apel R, Heiny J, Rubinstein J, Koch SE. Transient Receptor Potential Vanilloid 2 Regulates Myocardial Response to Exercise. PLoS One 2015; 10:e0136901. [PMID: 26356305 PMCID: PMC4565583 DOI: 10.1371/journal.pone.0136901] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 08/10/2015] [Indexed: 01/14/2023] Open
Abstract
The myocardial response to exercise is an adaptive mechanism that permits the heart to maintain cardiac output via improved cardiac function and development of hypertrophy. There are many overlapping mechanisms via which this occurs with calcium handling being a crucial component of this process. Our laboratory has previously found that the stretch sensitive TRPV2 channels are active regulators of calcium handling and cardiac function under baseline conditions based on our observations that TRPV2-KO mice have impaired cardiac function at baseline. The focus of this study was to determine the cardiac function of TRPV2-KO mice under exercise conditions. We measured skeletal muscle at baseline in WT and TRPV2-KO mice and subjected them to various exercise protocols and measured the cardiac response using echocardiography and molecular markers. Our results demonstrate that the TRPV2-KO mouse did not tolerate forced exercise although they became increasingly exercise tolerant with voluntary exercise. This occurs as the cardiac function deteriorates further with exercise. Thus, our conclusion is that TRPV2-KO mice have impaired cardiac functional response to exercise.
Collapse
Affiliation(s)
- Mindi Naticchioni
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Rajiv Karani
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Margaret A. Smith
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Evan Onusko
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Nathan Robbins
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Min Jiang
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Tatiana Radzyukevich
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Logan Fulford
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Xu Gao
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Ryan Apel
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Judith Heiny
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Jack Rubinstein
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Sheryl E. Koch
- Department of Internal Medicine, Division of Cardiovascular Health & Disease, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- * E-mail:
| |
Collapse
|