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Du H, Lai J, Lin B, Pan J, Zhou Y, Feng Y. LCN2 Regulates Microglia Polarization Through the p38MAPK-PGC-1α-PPARγ Pathway to Alleviate Traumatic Brain Injury. Cell Biochem Biophys 2025; 83:2301-2311. [PMID: 39688655 DOI: 10.1007/s12013-024-01642-w] [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] [Accepted: 12/04/2024] [Indexed: 12/18/2024]
Abstract
Traumatic brain injury (TBI) is a common traumatic event that imposes a significant burden on families and society. Lipocalin (LCN) is a class of multifunctional secreted lipoprotein molecules. This study aimed to explore the role and possible mechanism of LCN2 in TBI. A rat model of TBI was constructed and adeno-associated virus-coated shRNA-LCN2 was used to silence LCN2 expression. The modified neurological severity score (mNSS), learning and memory ability, pathological injury of brain tissue, number of neurons, and expression of neurotrophic factors were analyzed, and the expression of inflammatory factors, M1/M2 polarization of microglia, and p38MAPK-PGC-1α-PPARγ pathway after LCN2 silencing were further detected. Results found that LCN2 was highly expressed in the brain tissue of TBI rats, and there were obvious learning and cognitive impairments and pathological injury of brain tissue. After silencing LCN2, the mNSS was further increased, and the learning and cognitive ability was weakened. Similarly, silencing LCN2 increased the brain tissue water content, aggravated the histopathology degree, decreased the number of surviving neurons, and reduced the expression of neurotrophic factors in TBI model rats. In addition, the expression of M1 proinflammatory cytokines and polarization markers in microglia of TBI was increased, and the expression of M2 cytokines and markers was decreased after silencing LCN2. Silencing LCN2 also inhibited the activation of the p38MAPK-PGC-1α-PPARγ pathway. In conclusion, LCN2 was released by surviving neurons after TBI, and the increased LCN2 activated the p38MAPK-PGC-1α-PPARγ pathway, which promoted M2 polarization of microglia, and secreted neurotrophic factors, thereby alleviating secondary brain injury.
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Affiliation(s)
- Hanjian Du
- Department of Neurosurgery, Chongqing General Hospital, Chongqing University, Chongqing, 401147, China
| | - Jun Lai
- Department of Neurosurgery, Chongqing General Hospital, Chongqing University, Chongqing, 401147, China
| | - Bo Lin
- Department of Neurosurgery, Chongqing General Hospital, Chongqing University, Chongqing, 401147, China
| | - Jinyu Pan
- Department of Neurosurgery, Chongqing General Hospital, Chongqing University, Chongqing, 401147, China
| | - Yanghao Zhou
- Department of Neurosurgery, Chongqing General Hospital, Chongqing University, Chongqing, 401147, China
| | - Yimo Feng
- Department of Neurosurgery, Chongqing General Hospital, Chongqing University, Chongqing, 401147, China.
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2
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Aparicio-Trejo OE, Hernández-Cruz EY, Reyes-Fermín LM, Ceja-Galicia ZA, Pedraza-Chaverri J. The role of redox signaling in mitochondria and endoplasmic reticulum regulation in kidney diseases. Arch Toxicol 2025; 99:1865-1891. [PMID: 40214774 DOI: 10.1007/s00204-025-04041-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2025] [Accepted: 03/20/2025] [Indexed: 05/18/2025]
Abstract
Kidney diseases are among the fastest worldwide growing pathologies. This growth together with their high mortality rate emphasizes the importance of generating vital information about the mechanism involved in their pathophysiology to determine possible therapeutic targets. Recently, mitochondrial damage and their implication in the reactive oxygen spices (ROS) signaling and redox homeostasis have emerged as a hub point in the pathologic mechanism involved in renal pathologies. ROS in low levels are necessary to maintain cell processes as well as the mitochondria homeostasis and its association with other organelles, especially the with the endoplasmic reticulum (ER). However, the information about how redox signaling interacts and interferes with other cellular processes and the mechanism involved has not been fully integrated. Furthermore, in higher concentrations, these ROS promotes pathologic pathways linked to renal disease progression like, mitochondrial biogenesis reduction, ER stress, calcium overload, inflammation, cell death and fibrosis. Therefore, the aim of this review is to describe the molecular mechanisms involved in the redox signaling influence on mitochondrial and ER homeostasis, focusing on lipid metabolism and ß-oxidation, mitochondrial biogenesis, inflammations, ER stress and calcium homeostasis, as well as the effects of these alteration in the genesis and development of renal disease, with emphasis in acute kidney injury (AKI) and chronic kidney disease (CKD).
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Affiliation(s)
- Omar Emiliano Aparicio-Trejo
- Department of Cardio-Renal Physiopathology, National Institute of Cardiology Ignacio Chávez, 14080, Mexico City, Mexico
| | | | - Laura María Reyes-Fermín
- Laboratory F-315, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City, Mexico
| | | | - José Pedraza-Chaverri
- Laboratory F-315, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City, Mexico.
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Giacco A, Iervolino S, Cioffi F, Peluso T, Mercurio G, Roberto L, de Rosa V, Cammarota M, Varricchio S, Staibano S, Boscia F, Canzoniero LMT, De Felice M, Ambrosino C, Moreno M, Silvestri E. Brain Abnormalities in Young Single- and Double-Heterozygote Mice for Both Nkx2-1- and Pax8-Null Mutations. Mol Neurobiol 2025; 62:4023-4041. [PMID: 39375286 PMCID: PMC11880048 DOI: 10.1007/s12035-024-04524-7] [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: 07/25/2023] [Accepted: 09/22/2024] [Indexed: 10/09/2024]
Abstract
In humans and mice, Nkx2-1 and Pax8 are crucial morphogenic transcription factors defining the early development of the thyroid and specific extrathyroidal tissues. By using 3-month-old single or double heterozygotes for Nkx2-1- and Pax8-null mutations (DHTP) mice, we studied brain abnormalities under different human-like dysthyroidisms, focusing on putative alterations of specific neurotransmitter systems, expression of markers of pre- and post-synaptic function and, given the physio-pathological role mitochondria have in controlling the bioenergetic status of neurons, of mitochondrial dynamics and oxidative balance. Compared to Wt controls, DHTP mice, bearing both systemic and brain hypothyroidism, showed altered expression of synaptic markers, generic and cholinergic (corroborated by immunohistochemistry in caudate, putamen, hippocampus, and basal forebrain) and glutamatergic ones, and reduced expression of key proteins of synaptic plasticity potency and several isoforms of glutamate receptors. The brain of DHTP mice was characterized by lower levels of H2O2 and imbalanced mitochondrial dynamics. Nkx2-1 + / - mice showed dopaminergic neuron-specific alterations, morphologically, more evident in the substantia nigra of DHTP mice. Nkx2-1 + / - mice also showed enhanced mitochondrial biogenesis and oxidative capacity likely as a global response of the brain to Nkx2-1 haploinsufficiency and/or to their elevated T3 circulating levels. Reduced transcription of both tyrosine hydroxylase and dopamine transporter was observed in Pax8 + / - euthyroid mice, suggesting a dopaminergic dysfunction, albeit likely at an early stage, but consistent with the deregulated glucose homeostasis observed in such animals. Overall, new information was obtained on the impact of haploinsufficiency of Pax8 and NKx2-1 on several brain neuroanatomical, molecular, and neurochemical aspects, thus opening the way for future targeting brain dysfunctions in the management of both overt and subclinical thyroid dysfunctions.
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Affiliation(s)
- Antonia Giacco
- Department of Science and Technology, University of Sannio, Via De Sanctis, 82100, Benevento, Italy
| | - Stefania Iervolino
- Department of Science and Technology, University of Sannio, Via De Sanctis, 82100, Benevento, Italy
| | - Federica Cioffi
- Department of Science and Technology, University of Sannio, Via De Sanctis, 82100, Benevento, Italy
| | - Teresa Peluso
- Department of Science and Technology, University of Sannio, Via De Sanctis, 82100, Benevento, Italy
| | - Giovanna Mercurio
- Department of Science and Technology, University of Sannio, Via De Sanctis, 82100, Benevento, Italy
| | - Luca Roberto
- Biogem, Biology and Molecular Genetics Institute, Via Camporeale, 83031, Ariano Irpino, Av, Italy
| | - Valeria de Rosa
- Division of Pharmacology, Department of Neuroscience, Reproductive and Dentistry Sciences, School of Medicine, Federico II University of Naples, Via Pansini, 5, 80131, Naples, Italy
| | - Mariarosaria Cammarota
- Division of Pharmacology, Department of Neuroscience, Reproductive and Dentistry Sciences, School of Medicine, Federico II University of Naples, Via Pansini, 5, 80131, Naples, Italy
| | - Silvia Varricchio
- Department of Advanced Biomedical Sciences, Pathology Section, University of Naples Federico II, 80131, Naples, Italy
| | - Stefania Staibano
- Department of Advanced Biomedical Sciences, Pathology Section, University of Naples Federico II, 80131, Naples, Italy
| | - Francesca Boscia
- Division of Pharmacology, Department of Neuroscience, Reproductive and Dentistry Sciences, School of Medicine, Federico II University of Naples, Via Pansini, 5, 80131, Naples, Italy
| | | | - Mario De Felice
- Institute of Experimental Endocrinology and Oncology (IEOS), CNR, Via Pansini 6, 80131, Naples, Italy
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, Via Pansini 6, 80131, Naples, Italy
| | - Concetta Ambrosino
- Department of Science and Technology, University of Sannio, Via De Sanctis, 82100, Benevento, Italy
- Biogem, Biology and Molecular Genetics Institute, Via Camporeale, 83031, Ariano Irpino, Av, Italy
- Institute of Experimental Endocrinology and Oncology (IEOS), CNR, Via Pansini 6, 80131, Naples, Italy
| | - Maria Moreno
- Department of Science and Technology, University of Sannio, Via De Sanctis, 82100, Benevento, Italy
| | - Elena Silvestri
- Department of Science and Technology, University of Sannio, Via De Sanctis, 82100, Benevento, Italy.
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Wang T, Sun X, Zhang Y, Wang Q, Cheng W, Gao Y, Shi X, Jin J. Baicalin Promotes Skeletal Muscle Fiber Remodeling by Activating the p38MAPK/PGC-1α Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2025; 73:6878-6889. [PMID: 40103396 DOI: 10.1021/acs.jafc.5c00300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/20/2025]
Abstract
Skeletal muscle is the major tissue for metabolic activity in the body and performs a variety of physiological functions. Among these, muscle fiber types are decisive in muscle function and meat quality. Numerous studies have shown that natural products can affect the development of skeletal muscle, regulate the formation of muscle fibers, and impact muscle function under physiological or pathological conditions. Baicalin, a natural flavonoid compound mainly derived from the dried roots of Scutellaria baicalensis, has been reported to affect glucose metabolism and insulin resistance in skeletal muscle. However, the role of baicalin in the conversion of skeletal muscle fiber types and its underlying mechanisms remain unclear. This study aimed to explore the effects of baicalin on skeletal muscle fiber conversion in vitro and in vivo. The in vitro experiment used C2C12 cells as a model, with a baicalin treatment concentration of 125 μM; the in vivo experiment used C57BL/6J mice and weaned piglets as the models. The results showed that baicalin could participate in the remodeling of skeletal muscle fibers, promoting the conversion from glycolytic fibers to oxidative fibers in mice and pigs. This was evidenced by increased protein and mRNA expression levels of genes related to oxidative fibers, upregulated SDH enzyme activity, and mitochondrial complex expression in vivo and in vitro, while the protein and mRNA expression levels of genes related to glycolytic fibers were decreased, and LDH enzyme activity was downregulated. Mechanistic studies revealed that baicalin, as a small molecule, could target and bind to the p38 MAPK protein, increase its expression and phosphorylation levels, and activate the p38 MAPK/PGC-1α signaling pathway. Collectively, these data showed that baicalin induced a shift in skeletal muscle fiber composition from glycolytic to oxidative myofibers by activating the p38 MAPK/PGC-1α signaling pathway, thereby affecting the meat quality.
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Affiliation(s)
- Teng Wang
- Laboratory of Animal Fat Deposition and Muscle Development, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiaohui Sun
- Laboratory of Animal Fat Deposition and Muscle Development, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yidi Zhang
- Laboratory of Animal Fat Deposition and Muscle Development, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qingyan Wang
- Laboratory of Animal Fat Deposition and Muscle Development, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Wenhui Cheng
- Laboratory of Animal Fat Deposition and Muscle Development, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yuhui Gao
- Laboratory of Animal Fat Deposition and Muscle Development, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xin'e Shi
- Laboratory of Animal Fat Deposition and Muscle Development, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jianjun Jin
- Laboratory of Animal Fat Deposition and Muscle Development, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
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5
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Cocksedge SP, Mantecón L, Castaño E, Infante C, Bailey SJ. The Potential of Superoxide Dismutase-Rich Tetraselmis chuii as a Promoter of Cellular Health. Int J Mol Sci 2025; 26:1693. [PMID: 40004157 PMCID: PMC11855123 DOI: 10.3390/ijms26041693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2025] [Revised: 02/12/2025] [Accepted: 02/13/2025] [Indexed: 02/27/2025] Open
Abstract
Tetraselmis chuii (T. chuii) is a green, marine, eukaryotic, microalgae that was authorized in the European Union (EU) as a novel food for human consumption in 2014, and as a food supplement in 2017. This narrative review will provide an overview of preclinical and clinical trials assessing the efficacy of a T. chuii-derived ingredient, characterized by a high superoxide dismutase (SOD) activity (SOD-rich T. chuii), to improve various aspects of cellular health. Collectively, results from in vitro, and more importantly in vivo research, support SOD-rich T. chuii as a potential promoter of cellular health. Principally, the ingredient appears to function as an indirect antioxidant by boosting intracellular antioxidant systems. Moreover, it can positively modulate inflammatory status by up-regulating anti-inflammatory and down-regulating pro-inflammatory cytokines and factors. In addition, SOD-rich T. chuii appears to promote cellular health though protecting from DNA damage, boosting immune function, strengthening cell structure and integrity, and positively modulating cell signaling pathways. There is also some evidence to suggest that SOD-rich T. chuii may improve aspects of mitochondrial function through the up-regulation of genes linked to mitochondrial biogenesis and ATP synthesis. From the trials conducted to date, transcriptional activation of nuclear factor erythroid 2-related factor 2 (NRF2) and sirtuin 1 (SIRT1) appear to be important in mediating the effects of SOD-rich T. chuii on cellular health. These exciting preliminary observations suggest that SOD-rich T. chuii may represent a natural blue food supplement with the potential to enhance various aspects of cellular health.
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Affiliation(s)
- Stuart P. Cocksedge
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough LE11 3TU, UK;
- Centre for Physical Activity, Sport and Exercise Sciences, Coventry University, Coventry CV1 5FB, UK
| | - Lalia Mantecón
- Fitoplancton Marino, S.L., Dársena Comercial s/n, 11500 El Puerto de Santa María, Cádiz, Spain; (L.M.); (E.C.); (C.I.)
| | - Enrique Castaño
- Fitoplancton Marino, S.L., Dársena Comercial s/n, 11500 El Puerto de Santa María, Cádiz, Spain; (L.M.); (E.C.); (C.I.)
| | - Carlos Infante
- Fitoplancton Marino, S.L., Dársena Comercial s/n, 11500 El Puerto de Santa María, Cádiz, Spain; (L.M.); (E.C.); (C.I.)
| | - Stephen J. Bailey
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough LE11 3TU, UK;
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Champsi S, Hood DA. Sulforaphane treatment mimics contractile activity-induced mitochondrial adaptations in muscle myotubes. Am J Physiol Cell Physiol 2025; 328:C335-C354. [PMID: 39672545 DOI: 10.1152/ajpcell.00669.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2024] [Revised: 11/15/2024] [Accepted: 12/03/2024] [Indexed: 12/15/2024]
Abstract
Mitochondria are metabolic hubs that govern skeletal muscle health. Although exercise has been established as a powerful inducer of quality control processes that ultimately enhance mitochondrial function, there are currently limited pharmaceutical interventions available that emulate exercise-induced mitochondrial adaptations. To investigate a novel candidate for this role, we examined sulforaphane (SFN), a naturally occurring compound found in cruciferous vegetables. SFN has been documented as a potent antioxidant inducer through its activation of the nuclear factor erythroid 2-related factor 2 (Nrf-2) antioxidant response pathway. However, its effects on muscle health have been underexplored. To investigate the interplay between chronic exercise and SFN, C2C12 myotubes were electrically stimulated to model chronic contractile activity (CCA) in the presence or absence of SFN. SFN promoted Nrf-2 nuclear translocation, enhanced mitochondrial respiration, and upregulated key antioxidant proteins including catalase and glutathione reductase. These adaptations were accompanied by reductions in cellular and mitochondrial reactive oxygen species (ROS) emission. Signaling toward biogenesis was enhanced, demonstrated by increases in mitochondrial transcription factor A (TFAM), peroxisome proliferator-activated receptor-gamma coactivator (PGC)-1α nuclear translocation, PGC-1α promoter activity, mitochondrial content, and organelle branching, suggestive of a larger, more interconnected mitochondrial pool. These mitochondrial adaptations were accompanied by an increase in lysosomal proteins, suggesting coordinated regulation. There was no difference in mitochondrial and antioxidant-related proteins between CCA and non-CCA SFN-treated cells. Our data suggest that SFN activates signaling cascades that are common to those produced by contractile activity, indicating that SFN-centered therapeutic strategies may improve the mitochondrial phenotype in skeletal muscle.NEW & NOTEWORTHY Nrf-2 is a transcription factor that has been implicated in mitigating oxidative stress and regulating mitochondrial homeostasis. However, limited research has demonstrated how Nrf-2-mediated adaptations compare with those produced by exercise. To investigate this, we treated myotubes with Sulforaphane, a well-established Nrf-2 activator, and combined this with stimulation-induced chronic contractile activity to model exercise training. Our work is the first to establish that sulforaphane mimics training-induced mitochondrial adaptations, including enhancements in respiration, biogenesis, and dynamics.
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Affiliation(s)
- Sabrina Champsi
- Muscle Health Research Centre, School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - David A Hood
- Muscle Health Research Centre, School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
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7
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Sato R, da Fonseca GWP, das Neves W, von Haehling S. Mechanisms and pharmacotherapy of cancer cachexia-associated anorexia. Pharmacol Res Perspect 2025; 13:e70031. [PMID: 39776294 PMCID: PMC11707257 DOI: 10.1002/prp2.70031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 09/17/2024] [Accepted: 10/16/2024] [Indexed: 01/30/2025] Open
Abstract
Cachexia is a multifactorial metabolic syndrome characterized by weight and skeletal muscle loss caused by underlying illnesses such as cancer, heart failure, and renal failure. Inflammation, insulin resistance, increased muscle protein degradation, decreased food intake, and anorexia are the primary pathophysiological drivers of cachexia. Cachexia causes physical deterioration and functional impairment, loss of quality of life, lower response to active treatment, and ultimately morbidity and mortality, while the difficulties in tackling cachexia in its advanced phases and the heterogeneity of the syndrome among patients require an individualized and multidisciplinary approach from an early stage. Specifically, strategies combining nutritional and exercise interventions as well as pharmacotherapy that directly affect the pathogenesis of cachexia, such as anti-inflammatory, metabolism-improving, and appetite-stimulating agents, have been proposed, but none of which have demonstrated sufficient evidence to date. Nevertheless, several agents have recently emerged, including anamorelin, a ghrelin receptor agonist, growth differentiation factor 15 neutralization therapy, and melanocortin receptor antagonist, as candidates for ameliorating anorexia associated with cancer cachexia. Therefore, in this review, we outline cancer cachexia-associated anorexia and its pharmacotherapy, including corticosteroids, progesterone analogs, cannabinoids, anti-psychotics, and thalidomide which have been previously explored for their efficacy, in addition to the aforementioned novel agents, along with their mechanisms.
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Affiliation(s)
- Ryosuke Sato
- Department of Cardiology and PneumologyUniversity of Göttingen Medical CenterGöttingenGermany
- DZHK (German Center for Cardiovascular Research), Partner Site Lower SaxonyGermany
| | - Guilherme Wesley Peixoto da Fonseca
- Heart Institute (InCor)University of São Paulo Medical SchoolSão PauloSão PauloBrazil
- School of Physical Education and SportUniversity of São PauloSão PauloBrazil
| | - Willian das Neves
- Department of Anatomy, Institute of Biomedical SciencesUniversity of Sao PauloSao PauloBrazil
| | - Stephan von Haehling
- Department of Cardiology and PneumologyUniversity of Göttingen Medical CenterGöttingenGermany
- DZHK (German Center for Cardiovascular Research), Partner Site Lower SaxonyGermany
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8
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Xu M, Feng P, Yan J, Li L. Mitochondrial quality control: a pathophysiological mechanism and potential therapeutic target for chronic obstructive pulmonary disease. Front Pharmacol 2025; 15:1474310. [PMID: 39830343 PMCID: PMC11739169 DOI: 10.3389/fphar.2024.1474310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Accepted: 12/11/2024] [Indexed: 01/22/2025] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a prevalent chronic respiratory disease worldwide. Mitochondrial quality control mechanisms encompass processes such as mitochondrial biogenesis, fusion, fission, and autophagy, which collectively maintain the quantity, morphology, and function of mitochondria, ensuring cellular energy supply and the progression of normal physiological activities. However, in COPD, due to the persistent stimulation of harmful factors such as smoking and air pollution, mitochondrial quality control mechanisms often become deregulated, leading to mitochondrial dysfunction. Mitochondrial dysfunction plays a pivotal role in the pathogenesis of COPD, contributing toinflammatory response, oxidative stress, cellular senescence. However, therapeutic strategies targeting mitochondria remain underexplored. This review highlights recent advances in mitochondrial dysfunction in COPD, focusing on the role of mitochondrial quality control mechanisms and their dysregulation in disease progression. We emphasize the significance of mitochondria in the pathophysiological processes of COPD and explore potential strategies to regulate mitochondrial quality and improve mitochondrial function through mitochondrial interventions, aiming to treat COPD effectively. Additionally, we analyze the limitations and challenges of existing therapeutic strategies, aiming to provide new insights and methods for COPD treatment.
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Affiliation(s)
- Mengjiao Xu
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Peng Feng
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Ferguson Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States
| | - Jun Yan
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Lei Li
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
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9
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Di Florio DN, Weigel GJ, Gorelov DJ, McCabe EJ, Beetler DJ, Shapiro KA, Bruno KA, Chekuri I, Jain A, Whelan ER, Salomon GR, Khatib S, Bonvie-Hill NE, Fliess JJ, Giresi PG, Hamilton C, Hartmoyer CJ, Balamurugan V, Darakjian AA, Edenfield BH, Kocsis SC, McLeod CJ, Cooper LT, Audet-Walsh É, Coronado MJ, Sin J, Fairweather D. Sex differences in mitochondrial gene expression during viral myocarditis. Biol Sex Differ 2024; 15:104. [PMID: 39696682 PMCID: PMC11657264 DOI: 10.1186/s13293-024-00678-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 11/20/2024] [Indexed: 12/20/2024] Open
Abstract
BACKGROUND Myocarditis is an inflammation of the heart muscle most often caused by viral infections. Sex differences in the immune response during myocarditis have been well described but upstream mechanisms in the heart that might influence sex differences in disease are not completely understood. METHODS Male and female BALB/c wild type mice received an intraperitoneal injection of heart-passaged coxsackievirus B3 (CVB3) or vehicle control. Bulk-tissue RNA-sequencing was conducted to better understand sex differences in CVB3 myocarditis. We performed enrichment analysis and functional validation to understand sex differences in the transcriptional landscape of myocarditis and identify factors that might drive sex differences in myocarditis. RESULTS As expected, the hearts of male and female mice with myocarditis were significantly enriched for pathways related to an innate and adaptive immune response compared to uninfected controls. Unique to this study, we found that males were enriched for inflammatory pathways and gene changes that suggested worse mitochondrial electron transport function while females were enriched for pathways related to mitochondrial homeostasis. Mitochondria isolated from the heart of males were confirmed to have worse mitochondrial respiration than females during myocarditis. Unbiased TRANSFAC analysis identified estrogen-related receptor alpha (ERRα) as a transcription factor that may mediate sex differences in mitochondrial function during myocarditis. Transcript and protein levels of ERRα were confirmed as elevated in females with myocarditis compared to males. Differential binding analysis from chromatin immunoprecipitation (ChIP) sequencing confirmed that ERRα bound highly to select predicted respiratory chain genes in females more than males during myocarditis. CONCLUSIONS Females with viral myocarditis regulate mitochondrial homeostasis by upregulating master regulators of mitochondrial transcription including ERRα.
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Affiliation(s)
- Damian N Di Florio
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
- Center for Clinical and Translational Science, Mayo Clinic, Rochester, MN, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Jacksonville, FL, USA
| | - Gabriel J Weigel
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - David J Gorelov
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Elizabeth J McCabe
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Danielle J Beetler
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
- Center for Clinical and Translational Science, Mayo Clinic, Rochester, MN, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Jacksonville, FL, USA
| | - Katie A Shapiro
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Katelyn A Bruno
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
- Division of Cardiovascular Medicine, Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Isha Chekuri
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Angita Jain
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Emily R Whelan
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
- Center for Clinical and Translational Science, Mayo Clinic, Rochester, MN, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Jacksonville, FL, USA
| | - Gary R Salomon
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Sami Khatib
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | | | - Jessica J Fliess
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Presley G Giresi
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Charwan Hamilton
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | | | | | - Ashley A Darakjian
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Brandy H Edenfield
- Department of Cancer Biology, Mayo Clinic Jacksonville, Jacksonville, FL, USA
| | - S Christian Kocsis
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | | | - Leslie T Cooper
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Étienne Audet-Walsh
- Endocrinology - Nephrology Research Division, CHU de Québec - Université Laval Research Center, Québec, QC, Canada
| | | | - Jon Sin
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
| | - DeLisa Fairweather
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA.
- Center for Clinical and Translational Science, Mayo Clinic, Rochester, MN, USA.
- Department of Immunology, Mayo Clinic, Jacksonville, FL, USA.
- Department of Medicine, Mayo Clinic, Jacksonville, FL, USA.
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10
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Arianti R, Vinnai BÁ, Alrifai R, Karadsheh G, Al-Khafaji YQ, Póliska S, Győry F, Fésüs L, Kristóf E. Upregulation of inhibitor of DNA binding 1 and 3 is important for efficient thermogenic response in human adipocytes. Sci Rep 2024; 14:28272. [PMID: 39550428 PMCID: PMC11569133 DOI: 10.1038/s41598-024-79634-2] [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: 07/01/2024] [Accepted: 11/11/2024] [Indexed: 11/18/2024] Open
Abstract
Brown and beige adipocytes can be activated by β-adrenergic agonist via cAMP-dependent signaling. Performing RNA-sequencing analysis in human cervical area-derived adipocytes, we found that dibutyryl-cAMP, which can mimic in vivo stimulation of browning and thermogenesis, enhanced the expression of browning and batokine genes and upregulated several signaling pathway genes linked to thermogenesis. We observed that the expression of inhibitor of DNA binding and cell differentiation (ID) 1 and particularly ID3 was strongly induced by the adrenergic stimulation. The degradation of ID1 and ID3 elicited by the ID antagonist AGX51 during thermogenic activation prevented the induction of proton leak respiration that reflects thermogenesis and abrogated cAMP analogue-stimulated upregulation of thermogenic genes and mitochondrial complex I, II, and IV subunits, independently of the proximal cAMP-PKA signaling pathway. The presented data suggests that ID proteins contribute to efficient thermogenic response of adipocytes during adrenergic stimulation.
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Affiliation(s)
- Rini Arianti
- Laboratory of Cell Biochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
- Universitas Muhammadiyah Bangka Belitung, Pangkalpinang, 33134, Indonesia
| | - Boglárka Ágnes Vinnai
- Laboratory of Cell Biochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, Debrecen, 4032, Hungary
| | - Rahaf Alrifai
- Laboratory of Cell Biochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, Debrecen, 4032, Hungary
| | - Gyath Karadsheh
- Laboratory of Cell Biochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, Debrecen, 4032, Hungary
| | - Yousif Qais Al-Khafaji
- Laboratory of Cell Biochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - Szilárd Póliska
- Genomic Medicine and Bioinformatics Core Facility, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - Ferenc Győry
- Department of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - László Fésüs
- Laboratory of Cell Biochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary.
| | - Endre Kristóf
- Laboratory of Cell Biochemistry, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary.
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11
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Kang M, Lee CS, Son H, Lee J, Lee J, Seo HJ, Kim MK, Choi M, Cho HJ, Kim HS. Latrophilin-2 Deletion in Cardiomyocyte Disrupts Cell Junction, Leading to D-CMP. Circ Res 2024; 135:1098-1115. [PMID: 39421931 DOI: 10.1161/circresaha.124.324670] [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: 04/08/2024] [Revised: 09/30/2024] [Accepted: 10/01/2024] [Indexed: 10/19/2024]
Abstract
BACKGROUND Latrophilin-2 (Lphn2), an adhesive GPCR (G protein-coupled receptor), was found to be a specific marker of cardiac progenitors during the differentiation of pluripotent stem cells into cardiomyocytes or during embryonic heart development in our previous studies. Its role in adult heart physiology, however, remains unclear. METHODS The embryonic lethality resulting from Lphn2 deletion necessitates the establishment of cardiomyocyte-specific, tamoxifen-inducible Lphn2 knockout mice, which was achieved by crossing Lphn2 flox/flox mice with mice having MerCreMer (tamoxifen-inducible Cre [Cyclization recombinase] recombinase) under the α-myosin heavy chain promoter. RESULTS Tamoxifen treatment for several days completely suppressed Lphn2 expression, specifically in the myocardium, and induced the dilated cardiomyopathy (D-CMP) phenotype with serious arrhythmia and sudden death in a short period of time. Transmission electron microscopy showed mitochondrial abnormalities, blurred Z-discs, and dehiscent myofibrils. The D-CMP phenotype, or heart failure, worsened during myocardial infarction. In a mechanistic study of D-CMP, Lphn2 knockout suppressed PGC-1α (Peroxisome proliferator-activated receptor gamma coactivator 1-alpha) and mitochondrial dysfunction, leading to the accumulation of reactive oxygen species and the global suppression of junctional molecules, such as N-cadherin (adherens junction), DSC-2 (desmocollin-2; desmosome), and connexin-43 (gap junction), leading to the dehiscence of cardiac myofibers and serious arrhythmia. In an experimental therapeutic trial, activators of p38-MAPK (p38 mitogen-activated protein kinases), which is a downstream signaling molecule of Lphn2, remarkably rescued the D-CMP phenotype of Lphn2 knockout in the heart by restoring PGC-1α and mitochondrial function and recovering global junctional proteins. CONCLUSIONS Lphn2 is a critical regulator of heart integrity by controlling mitochondrial functions and cell-to-cell junctions in cardiomyocytes. Its deficiency leads to D-CMP, which can be rescued by activators of the p38-MAPK pathway.
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MESH Headings
- Animals
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/pathology
- Mice, Knockout
- Mice
- Cardiomyopathy, Dilated/genetics
- Cardiomyopathy, Dilated/metabolism
- Cardiomyopathy, Dilated/pathology
- Intercellular Junctions/metabolism
- Intercellular Junctions/drug effects
- Receptors, Peptide/genetics
- Receptors, Peptide/metabolism
- Mice, Inbred C57BL
- Receptors, G-Protein-Coupled/metabolism
- Receptors, G-Protein-Coupled/genetics
- Receptors, G-Protein-Coupled/deficiency
- Tamoxifen/pharmacology
- p38 Mitogen-Activated Protein Kinases/metabolism
- Gene Deletion
- Male
- Cells, Cultured
- Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha/metabolism
- Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha/genetics
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Affiliation(s)
- Minjun Kang
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, College of Medicine or College of Pharmacy, Seoul National University, South Korea (M.K., C.-S.L., H.S., H.J.S., H.-S.K.)
- Biomedical Research Institute (M.K., C.-S.L., H.S., Jaewon Lee, H.J.S., M.-K.K., H.-S.K.), Seoul National University Hospital, South Korea
| | - Choon-Soo Lee
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, College of Medicine or College of Pharmacy, Seoul National University, South Korea (M.K., C.-S.L., H.S., H.J.S., H.-S.K.)
- Biomedical Research Institute (M.K., C.-S.L., H.S., Jaewon Lee, H.J.S., M.-K.K., H.-S.K.), Seoul National University Hospital, South Korea
| | - HyunJu Son
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, College of Medicine or College of Pharmacy, Seoul National University, South Korea (M.K., C.-S.L., H.S., H.J.S., H.-S.K.)
- Biomedical Research Institute (M.K., C.-S.L., H.S., Jaewon Lee, H.J.S., M.-K.K., H.-S.K.), Seoul National University Hospital, South Korea
| | - Jeongha Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, South Korea (Jeongha Lee, M.C.)
| | - Jaewon Lee
- Biomedical Research Institute (M.K., C.-S.L., H.S., Jaewon Lee, H.J.S., M.-K.K., H.-S.K.), Seoul National University Hospital, South Korea
| | - Hyun Ju Seo
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, College of Medicine or College of Pharmacy, Seoul National University, South Korea (M.K., C.-S.L., H.S., H.J.S., H.-S.K.)
- Biomedical Research Institute (M.K., C.-S.L., H.S., Jaewon Lee, H.J.S., M.-K.K., H.-S.K.), Seoul National University Hospital, South Korea
| | - Moo-Kang Kim
- Department of Internal Medicine (M.-K.K., H.-J.C., H.-S.K.), Seoul National University Hospital, South Korea
- Biomedical Research Institute (M.K., C.-S.L., H.S., Jaewon Lee, H.J.S., M.-K.K., H.-S.K.), Seoul National University Hospital, South Korea
| | - Murim Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, South Korea (Jeongha Lee, M.C.)
| | - Hyun-Jai Cho
- Department of Internal Medicine (M.-K.K., H.-J.C., H.-S.K.), Seoul National University Hospital, South Korea
| | - Hyo-Soo Kim
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, College of Medicine or College of Pharmacy, Seoul National University, South Korea (M.K., C.-S.L., H.S., H.J.S., H.-S.K.)
- Department of Internal Medicine (M.-K.K., H.-J.C., H.-S.K.), Seoul National University Hospital, South Korea
- Biomedical Research Institute (M.K., C.-S.L., H.S., Jaewon Lee, H.J.S., M.-K.K., H.-S.K.), Seoul National University Hospital, South Korea
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12
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Herrera-Melle L, Cicuéndez B, López JA, Dumesic PA, Wilensky SE, Rodríguez E, Leiva-Vega L, Caballero A, León M, Vázquez J, Spiegelman BM, Folgueira C, Mora A, Sabio G. p38α kinase governs muscle strength through PGC1α in mice. Acta Physiol (Oxf) 2024; 240:e14234. [PMID: 39361268 DOI: 10.1111/apha.14234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 08/26/2024] [Accepted: 09/10/2024] [Indexed: 10/19/2024]
Abstract
AIMS Skeletal muscle, with its remarkable plasticity and dynamic adaptation, serves as a cornerstone of locomotion and metabolic homeostasis in the human body. Muscle tissue, with its extraordinary capacity for force generation and energy expenditure, plays a fundamental role in the movement, metabolism, and overall health. In this context, we sought to determine the role of p38α in mitochondrial metabolism since mitochondrial dynamics play a crucial role in the development of muscle-related diseases that result in muscle weakness. METHODS We conducted our study using male mice (MCK-cre, p38αMCK-KO and PGC1α MCK-KO) and mouse primary myoblasts. We analyzed mitochondrial metabolic, physiological parameters as well as proteomics, western blot, RNA-seq analysis from muscle samples. RESULTS Our findings highlight the critical involvement of muscle p38α in the regulation of mitochondrial function, a key determinant of muscle strength. The absence of p38α triggers changes in mitochondrial dynamics through the activation of PGC1α, a central regulator of mitochondrial biogenesis. These results have substantial implications for understanding the complex interplay between p38α kinase, PGC1α activation, and mitochondrial content, thereby enhancing our knowledge in the control of muscle biology. CONCLUSIONS This knowledge holds relevance for conditions associated with muscle weakness, where disruptions in these molecular pathways are frequently implicated in diminishing physical strength. Our research underscores the potential importance of targeting the p38α and PGC1α pathways within muscle, offering promising avenues for the advancement of innovative treatments. Such interventions hold the potential to improve the quality of life for individuals affected by muscle-related diseases.
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Affiliation(s)
| | - Beatriz Cicuéndez
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Centro Nacional de Investigaciones Oncológicas (CNIO), Madrid, Spain
| | - Juan Antonio López
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Phillip A Dumesic
- Department of Cancer Biology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA
| | - Sarah E Wilensky
- Department of Cancer Biology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA
| | - Elena Rodríguez
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Centro Nacional de Investigaciones Oncológicas (CNIO), Madrid, Spain
| | - Luis Leiva-Vega
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Centro Nacional de Investigaciones Oncológicas (CNIO), Madrid, Spain
| | - Ainoa Caballero
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Marta León
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Centro Nacional de Investigaciones Oncológicas (CNIO), Madrid, Spain
| | - Jesús Vázquez
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Bruce M Spiegelman
- Department of Cancer Biology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA
| | - Cintia Folgueira
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Centro Nacional de Investigaciones Oncológicas (CNIO), Madrid, Spain
| | - Alfonso Mora
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Centro Nacional de Investigaciones Oncológicas (CNIO), Madrid, Spain
| | - Guadalupe Sabio
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Centro Nacional de Investigaciones Oncológicas (CNIO), Madrid, Spain
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13
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Luo Y, Bollag WB. The Role of PGC-1α in Aging Skin Barrier Function. Cells 2024; 13:1135. [PMID: 38994987 PMCID: PMC11240425 DOI: 10.3390/cells13131135] [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: 05/20/2024] [Revised: 06/21/2024] [Accepted: 06/28/2024] [Indexed: 07/13/2024] Open
Abstract
Skin provides a physical and immune barrier to protect the body from foreign substances, microbial invasion, and desiccation. Aging reduces the barrier function of skin and its rate of repair. Aged skin exhibits decreased mitochondrial function and prolonged low-level inflammation that can be seen in other organs with aging. Peroxisome proliferator-activated receptor (PPAR)-γ coactivator-1α (PGC-1α), an important transcriptional coactivator, plays a central role in modulating mitochondrial function and antioxidant production. Mitochondrial function and inflammation have been linked to epidermal function, but the mechanisms are unclear. The aim of this review is to discuss the mechanisms by which PGC-1α might exert a positive effect on aged skin barrier function. Initially, we provide an overview of the function of skin under physiological and aging conditions, focusing on the epidermis. We then discuss mitochondrial function, oxidative stress, cellular senescence, and inflamm-aging, the chronic low-level inflammation observed in aging individuals. Finally, we discuss the effects of PGC-1α on mitochondrial function, as well as the regulation and role of PGC-1α in the aging epidermis.
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Affiliation(s)
- Yonghong Luo
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA;
| | - Wendy B. Bollag
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA;
- Charlie Norwood VA Medical Center, Augusta, GA 30904, USA
- Department of Dermatology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
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14
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Fan S, Yan X, Hu X, Liu X, Zhao S, Zhang Y, Zhou X, Shen X, Qi Q, Chen Y. Shikonin blocks CAF-induced TNBC metastasis by suppressing mitochondrial biogenesis through GSK-3β/NEDD4-1 mediated phosphorylation-dependent degradation of PGC-1α. J Exp Clin Cancer Res 2024; 43:180. [PMID: 38937832 PMCID: PMC11210116 DOI: 10.1186/s13046-024-03101-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 06/14/2024] [Indexed: 06/29/2024] Open
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) is characterized by its high metastatic potential, which results in poor patient survival. Cancer-associated fibroblasts (CAFs) are crucial in facilitating TNBC metastasis via induction of mitochondrial biogenesis. However, how to inhibit CAF-conferred mitochondrial biogenesis is still needed to explore. METHODS We investigated metastasis using wound healing and cell invasion assays, 3D-culture, anoikis detection, and NOD/SCID mice. Mitochondrial biogenesis was detected by MitoTracker green FM staining, quantification of mitochondrial DNA levels, and blue-native polyacrylamide gel electrophoresis. The expression, transcription, and phosphorylation of peroxisome-proliferator activated receptor coactivator 1α (PGC-1α) were detected by western blotting, chromatin immunoprecipitation, dual-luciferase reporter assay, quantitative polymerase chain reaction, immunoprecipitation, and liquid chromatography-tandem mass spectrometry. The prognostic role of PGC-1α in TNBC was evaluated using the Kaplan-Meier plotter database and clinical breast cancer tissue samples. RESULTS We demonstrated that PGC-1α indicated lymph node metastasis, tumor thrombus formation, and poor survival in TNBC patients, and it was induced by CAFs, which functioned as an inducer of mitochondrial biogenesis and metastasis in TNBC. Shikonin impeded the CAF-induced PGC-1α expression, nuclear localization, and interaction with estrogen-related receptor alpha (ERRα), thereby inhibiting PGC-1α/ERRα-targeted mitochondrial genes. Mechanistically, the downregulation of PGC-1α was mediated by synthase kinase 3β-induced phosphorylation of PGC-1α at Thr295, which associated with neural precursor cell expressed developmentally downregulated 4e1 recognition and subsequent degradation by ubiquitin proteolysis. Mutation of PGC-1α at Thr295 negated the suppressive effects of shikonin on CAF-stimulated TNBC mitochondrial biogenesis and metastasis in vitro and in vivo. CONCLUSIONS Our findings indicate that PGC-1α is a viable target for blocking TNBC metastasis by disrupting mitochondrial biogenesis, and that shikonin merits potential for treatment of TNBC metastasis as an inhibitor of mitochondrial biogenesis through targeting PGC-1α.
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Affiliation(s)
- Shuangqin Fan
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
- Key Laboratory of Novel Anti-Cancer Drug Targets Discovery and Application, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, 561113, China
- The Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
| | - Xiaomin Yan
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
- Key Laboratory of Novel Anti-Cancer Drug Targets Discovery and Application, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, 561113, China
- The Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
| | - Xiaoxia Hu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
- Key Laboratory of Novel Anti-Cancer Drug Targets Discovery and Application, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, 561113, China
- The Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
| | - Xing Liu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
- Key Laboratory of Novel Anti-Cancer Drug Targets Discovery and Application, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, 561113, China
- The Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
| | - Shijie Zhao
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
- Key Laboratory of Novel Anti-Cancer Drug Targets Discovery and Application, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, 561113, China
- The Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
| | - Yue Zhang
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
- Key Laboratory of Novel Anti-Cancer Drug Targets Discovery and Application, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, 561113, China
- The Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China
| | - Xiaofeng Zhou
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Department of Pharmacology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Xiangchun Shen
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China.
- Key Laboratory of Novel Anti-Cancer Drug Targets Discovery and Application, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, 561113, China.
- The Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China.
| | - Qi Qi
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Department of Pharmacology, School of Medicine, Jinan University, Guangzhou, 510632, China.
| | - Yan Chen
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China.
- Key Laboratory of Novel Anti-Cancer Drug Targets Discovery and Application, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, 561113, China.
- The Key Laboratory of Optimal Utilization of Natural Medicine Resources, School of Pharmaceutical Sciences, Guizhou Medical University, No.6 Ankang Avenue, Guian New District, Guizhou, 561113, China.
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15
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Reisman EG, Hawley JA, Hoffman NJ. Exercise-Regulated Mitochondrial and Nuclear Signalling Networks in Skeletal Muscle. Sports Med 2024; 54:1097-1119. [PMID: 38528308 PMCID: PMC11127882 DOI: 10.1007/s40279-024-02007-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2024] [Indexed: 03/27/2024]
Abstract
Exercise perturbs energy homeostasis in skeletal muscle and engages integrated cellular signalling networks to help meet the contraction-induced increases in skeletal muscle energy and oxygen demand. Investigating exercise-associated perturbations in skeletal muscle signalling networks has uncovered novel mechanisms by which exercise stimulates skeletal muscle mitochondrial biogenesis and promotes whole-body health and fitness. While acute exercise regulates a complex network of protein post-translational modifications (e.g. phosphorylation) in skeletal muscle, previous investigations of exercise signalling in human and rodent skeletal muscle have primarily focused on a select group of exercise-regulated protein kinases [i.e. 5' adenosine monophosphate-activated protein kinase (AMPK), protein kinase A (PKA), Ca2+/calmodulin-dependent protein kinase (CaMK) and mitogen-activated protein kinase (MAPK)] and only a small subset of their respective protein substrates. Recently, global mass spectrometry-based phosphoproteomic approaches have helped unravel the extensive complexity and interconnection of exercise signalling pathways and kinases beyond this select group and phosphorylation and/or translocation of exercise-regulated mitochondrial and nuclear protein substrates. This review provides an overview of recent advances in our understanding of the molecular events associated with acute endurance exercise-regulated signalling pathways and kinases in skeletal muscle with a focus on phosphorylation. We critically appraise recent evidence highlighting the involvement of mitochondrial and nuclear protein phosphorylation and/or translocation in skeletal muscle adaptive responses to an acute bout of endurance exercise that ultimately stimulate mitochondrial biogenesis and contribute to exercise's wider health and fitness benefits.
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Affiliation(s)
- Elizabeth G Reisman
- Exercise and Nutrition Research Program, Mary MacKillop Institute for Health Research, Australian Catholic University, Level 5, 215 Spring Street, Melbourne, VIC, 3000, Australia
| | - John A Hawley
- Exercise and Nutrition Research Program, Mary MacKillop Institute for Health Research, Australian Catholic University, Level 5, 215 Spring Street, Melbourne, VIC, 3000, Australia
| | - Nolan J Hoffman
- Exercise and Nutrition Research Program, Mary MacKillop Institute for Health Research, Australian Catholic University, Level 5, 215 Spring Street, Melbourne, VIC, 3000, Australia.
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16
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Liu B, Xie D, Huang X, Jin S, Dai Y, Sun X, Li D, Bennett AM, Diano S, Huang Y. Skeletal muscle TET3 promotes insulin resistance through destabilisation of PGC-1α. Diabetologia 2024; 67:724-737. [PMID: 38216792 PMCID: PMC10904493 DOI: 10.1007/s00125-023-06073-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 11/17/2023] [Indexed: 01/14/2024]
Abstract
AIM/HYPOTHESIS The peroxisome proliferator-activated receptor-γ coactivator α (PGC-1α) plays a critical role in the maintenance of glucose, lipid and energy homeostasis by orchestrating metabolic programs in multiple tissues in response to environmental cues. In skeletal muscles, PGC-1α dysregulation has been associated with insulin resistance and type 2 diabetes but the underlying mechanisms have remained elusive. This research aims to understand the role of TET3, a member of the ten-eleven translocation (TET) family dioxygenases, in PGC-1α dysregulation in skeletal muscles in obesity and diabetes. METHODS TET expression levels in skeletal muscles were analysed in humans with or without type 2 diabetes, as well as in mouse models of high-fat diet (HFD)-induced or genetically induced (ob/ob) obesity/diabetes. Muscle-specific Tet3 knockout (mKD) mice were generated to study TET3's role in muscle insulin sensitivity. Genome-wide expression profiling (RNA-seq) of muscle tissues from wild-type (WT) and mKD mice was performed to mine deeper insights into TET3-mediated regulation of muscle insulin sensitivity. The correlation between PGC-1α and TET3 expression levels was investigated using muscle tissues and in vitro-derived myotubes. PGC-1α phosphorylation and degradation were analysed using in vitro assays. RESULTS TET3 expression was elevated in skeletal muscles of humans with type 2 diabetes and in HFD-fed and ob/ob mice compared with healthy controls. mKD mice exhibited enhanced glucose tolerance, insulin sensitivity and resilience to HFD-induced insulin resistance. Pathway analysis of RNA-seq identified 'Mitochondrial Function' and 'PPARα Pathway' to be among the top biological processes regulated by TET3. We observed higher PGC-1α levels (~25%) in muscles of mKD mice vs WT mice, and lower PGC-1α protein levels (~25-60%) in HFD-fed or ob/ob mice compared with their control counterparts. In human and murine myotubes, increased PGC-1α levels following TET3 knockdown contributed to improved mitochondrial respiration and insulin sensitivity. TET3 formed a complex with PGC-1α and interfered with its phosphorylation, leading to its destabilisation. CONCLUSIONS/INTERPRETATION Our results demonstrate an essential role for TET3 in the regulation of skeletal muscle insulin sensitivity and suggest that TET3 may be used as a potential therapeutic target for the metabolic syndrome. DATA AVAILABILITY Sequences are available from the Gene Expression Omnibus ( https://www.ncbi.nlm.nih.gov/geo/ ) with accession number of GSE224042.
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Affiliation(s)
- Beibei Liu
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
- Center of Reproductive Medicine, National Health Commission Key Laboratory of Advanced Reproductive Medicine and Fertility, Shengjing Hospital of China Medical University, Shenyang, China
| | - Di Xie
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
- Department of Reproductive Medicine, General Hospital of Central Theater Command, Wuhan, Hubei, China
| | - Xinmei Huang
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
- Department of Endocrinology, Fifth People's Hospital of Shanghai, Fudan University School of Medicine, Shanghai, China
| | - Sungho Jin
- Institute of Human Nutrition, Columbia University Irving Medical Center, New York, NY, USA
| | - Yangyang Dai
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaoli Sun
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Affiliated Hospital of Nantong University, Jiangsu, China
| | - Da Li
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
- Center of Reproductive Medicine, National Health Commission Key Laboratory of Advanced Reproductive Medicine and Fertility, Shengjing Hospital of China Medical University, Shenyang, China
| | - Anton M Bennett
- Departments of Pharmacology and of Comparative Medicine, Yale University School of Medicine, New Haven, CT, USA
- Yale Center for Molecular and Systems Metabolism, Yale University School of Medicine, New Haven, CT, USA
| | - Sabrina Diano
- Institute of Human Nutrition, Columbia University Irving Medical Center, New York, NY, USA
| | - Yingqun Huang
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA.
- Yale Center for Molecular and Systems Metabolism, Yale University School of Medicine, New Haven, CT, USA.
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17
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Ashcroft SP, Stocks B, Egan B, Zierath JR. Exercise induces tissue-specific adaptations to enhance cardiometabolic health. Cell Metab 2024; 36:278-300. [PMID: 38183980 DOI: 10.1016/j.cmet.2023.12.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/06/2023] [Accepted: 12/05/2023] [Indexed: 01/08/2024]
Abstract
The risk associated with multiple cancers, cardiovascular disease, diabetes, and all-cause mortality is decreased in individuals who meet the current recommendations for physical activity. Therefore, regular exercise remains a cornerstone in the prevention and treatment of non-communicable diseases. An acute bout of exercise results in the coordinated interaction between multiple tissues to meet the increased energy demand of exercise. Over time, the associated metabolic stress of each individual exercise bout provides the basis for long-term adaptations across tissues, including the cardiovascular system, skeletal muscle, adipose tissue, liver, pancreas, gut, and brain. Therefore, regular exercise is associated with a plethora of benefits throughout the whole body, including improved cardiorespiratory fitness, physical function, and glycemic control. Overall, we summarize the exercise-induced adaptations that occur within multiple tissues and how they converge to ultimately improve cardiometabolic health.
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Affiliation(s)
- Stephen P Ashcroft
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ben Stocks
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Brendan Egan
- School of Health and Human Performance, Dublin City University, Dublin, Ireland
| | - Juleen R Zierath
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; Integrative Physiology, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Integrative Physiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
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18
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Song P, Zhao J, Li F, Zhao X, Feng J, Su Y, Wang B, Zhao J. Vitamin A regulates mitochondrial biogenesis and function through p38 MAPK-PGC-1α signaling pathway and alters the muscle fiber composition of sheep. J Anim Sci Biotechnol 2024; 15:18. [PMID: 38310300 PMCID: PMC10838450 DOI: 10.1186/s40104-023-00968-4] [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: 07/25/2023] [Accepted: 12/04/2023] [Indexed: 02/05/2024] Open
Abstract
BACKGROUND Vitamin A (VA) and its metabolite, retinoic acid (RA), are of great interest for their wide range of physiological functions. However, the regulatory contribution of VA to mitochondrial and muscle fiber composition in sheep has not been reported. METHOD Lambs were injected with 0 (control) or 7,500 IU VA palmitate into the biceps femoris muscle on d 2 after birth. At the age of 3 and 32 weeks, longissimus dorsi (LD) muscle samples were obtained to explore the effect of VA on myofiber type composition. In vitro, we investigated the effects of RA on myofiber type composition and intrinsic mechanisms. RESULTS The proportion of type I myofiber was greatly increased in VA-treated sheep in LD muscle at harvest. VA greatly promoted mitochondrial biogenesis and function in LD muscle of sheep. Further exploration revealed that VA elevated PGC-1α mRNA and protein contents, and enhanced the level of p38 MAPK phosphorylation in LD muscle of sheep. In addition, the number of type I myofibers with RA treatment was significantly increased, and type IIx myofibers was significantly decreased in primary myoblasts. Consistent with in vivo experiment, RA significantly improved mitochondrial biogenesis and function in primary myoblasts of sheep. We then used si-PGC-1α to inhibit PGC-1α expression and found that si-PGC-1α significantly abrogated RA-induced the formation of type I myofibers, mitochondrial biogenesis, MitoTracker staining intensity, UQCRC1 and ATP5A1 expression, SDH activity, and enhanced the level of type IIx muscle fibers. These data suggested that RA improved mitochondrial biogenesis and function by promoting PGC-1α expression, and increased type I myofibers. In order to prove that the effect of RA on the level of PGC-1α is caused by p38 MAPK signaling, we inhibited the p38 MAPK signaling using a p38 MAPK inhibitor, which significantly reduced RA-induced PGC-1α and MyHC I levels. CONCLUSION VA promoted PGC-1α expression through the p38 MAPK signaling pathway, improved mitochondrial biogenesis, and altered the composition of muscle fiber type.
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Affiliation(s)
- Pengkang Song
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Jiamin Zhao
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Fanqinyu Li
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Xiaoyi Zhao
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Jinxin Feng
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Yuan Su
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China
| | - Bo Wang
- State Key Laboratory of Animal Nutrition and Feeding, Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Junxing Zhao
- College of Animal Science, Shanxi Agricultural University, Taigu, Shanxi, 030801, People's Republic of China.
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19
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Mukhuty A, Mandal S, Fouzder C, Das S, Chattopadhyay D, Majumdar T, Kundu R. Nrf2 inhibition regulates intracellular lipid accumulation in mouse insulinoma cells and improves insulin secretory function. Mol Cell Endocrinol 2024; 581:112112. [PMID: 38000461 DOI: 10.1016/j.mce.2023.112112] [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: 08/28/2023] [Revised: 11/11/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023]
Abstract
High amount of fat in the pancreas is linked to poor functioning of β-cells and raises the risk of type 2 diabetes. Here we report the putative role of a circulatory glycoprotein Fetuin-A, a known obesity marker, in promoting lipid accumulation in β-cells and its association with Fatty acid translocase/CD36 for lipid storage culminate in β-cell dysfunction. Additionally, this work reveals regulation of CD36 via Nrf2, a key regulator of oxidative stress, and reduction of lipid accumulation by suppression of Nrf2 that restores β-cell function. Palmitate (0.50 mM) and Fetuin-A (100 μg/mL) exposure showed high levels of intracellular lipid in MIN6 (mouse insulinoma cells) with a concomitant decrease in insulin secretion. This also increased the expression of important lipogenic factors, like CD36, PGC1α, PPARγ, and SREBP1. Flow cytometry analysis of CD36 membrane localization has been corroborated with an increased accumulation of lipids as indicated by Oil-Red-O staining. Immunoblotting and immunofluorescence of Nrf2 indicated its high expression in palmitate-fetuin-A incubation and translocation in the nucleus. Suppression of Nrf2 by siRNA showed a reduced expression of lipogenic genes, ablation of lipid droplets, decrease in the number of apoptotic cells, and restoration of insulin secretion with a corresponding increase of Pdx1, BETA2, and Ins1 gene expression. Our study thus suggested an important aspect of lipid accumulation in the pancreatic β-cells contributing to β-cell dysfunction and demonstrated the role of Fetuin-A in CD36 expression, with a possible way of restoring β-cell function by targeting Nrf2.
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Affiliation(s)
- Alpana Mukhuty
- Cell Signaling Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan, 731 235, India
| | - Samanwita Mandal
- Cell Signaling Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan, 731 235, India
| | - Chandrani Fouzder
- Cell Signaling Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan, 731 235, India
| | - Snehasis Das
- Cellular and Molecular Endocrinology Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan, 731 235, India
| | - Dipanjan Chattopadhyay
- Cellular and Molecular Endocrinology Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan, 731 235, India
| | - Tanmay Majumdar
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Rakesh Kundu
- Cell Signaling Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan, 731 235, India.
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20
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Di Florio D, Gorelov D, McCabe E, Beetler D, Shapiro K, Bruno K, Chekuri I, Jain A, Whelan E, Salomon G, Khatib S, Bonvie-Hill N, Giresi P, Balamurugan V, Weigel G, Fliess J, Darakjian A, Edenfield B, Kocsis C, McLeod C, Cooper L, Audet-Walsh E, Coronado M, Sin J, Fairweather D. Sex differences in mitochondrial gene expression during viral myocarditis. RESEARCH SQUARE 2023:rs.3.rs-3716881. [PMID: 38196574 PMCID: PMC10775395 DOI: 10.21203/rs.3.rs-3716881/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Background Myocarditis is an inflammation of the heart muscle most often caused by an immune response to viral infections. Sex differences in the immune response during myocarditis have been well described but upstream mechanisms in the heart that might influence sex differences in disease are not completely understood. Methods Male and female BALB/c wild type mice received an intraperitoneal injection of heart-passaged coxsackievirus B3 (CVB3) or vehicle control. Bulk-tissue RNA-sequencing was conducted to better understand sex differences in CVB3 myocarditis. We performed enrichment analysis to understand sex differences in the transcriptional landscape of myocarditis and identify candidate transcription factors that might drive sex differences in myocarditis. Results The hearts of male and female mice with myocarditis were significantly enriched for pathways related to an innate and adaptive immune response compared to uninfected controls. When comparing females to males with myocarditis, males were enriched for inflammatory pathways and gene changes that suggested worse mitochondrial transcriptional support (e.g., mitochondrial electron transport genes). In contrast, females were enriched for pathways related to mitochondrial respiration and bioenergetics, which were confirmed by higher transcript levels of master regulators of mitochondrial function including peroxisome proliferator-activated receptor gamma coactivator 1 (PGC1α), nuclear respiratory factor 1 (NRF1) and estrogen-related receptor alpha (ERRα). TRANSFAC analysis identified ERRa as a transcription factor that may mediate sex differences in mitochondrial function during myocarditis. Conclusions Master regulators of mitochondrial function were elevated in females with myocarditis compared to males and may promote sex differences in mitochondrial respiratory transcript expression during viral myocarditis resulting in less severe myocarditis in females following viral infection.
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21
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Tobin SW, Seneviratne D, Phan L, Seegobin M, Rico AL, Westby B, Kisiala A, Martic S, Brunetti CR, Emery RJN. Profiling of adenine-derived signaling molecules, cytokinins, in myotubes reveals fluctuations in response to lipopolysaccharide-induced cell stress. Physiol Rep 2023; 11:e15870. [PMID: 38040455 PMCID: PMC10691934 DOI: 10.14814/phy2.15870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/03/2023] [Accepted: 11/05/2023] [Indexed: 12/03/2023] Open
Abstract
Cytokinins (CTKs) are a diverse collection of evolutionarily conserved adenine-derived signaling molecules classically studied as phytohormones; however, their roles and production have been less studied in mammalian systems. Skeletal muscles are sensitive to cellular cues such as inflammation and in response, alter their secretome to regulate the muscle stem cell and myofiber niche. Using cultured C2C12 muscle cells, we profiled CTK levels to understand (1) whether CTKs are part of the muscle secretome and (2) whether CTKs are responsive to cellular stress. To induce cellular stress, C2C12 myotubes were treated with lipopolysaccharides (LPS) for 24 h and then media and cell fractions were collected for ultra high-performance liquid chromatography tandem mass spectrometry with electrospray ionization (UHPLC-(ESI+)-HRMS/MS) for metabolomics and CTK profiling. Across LPS-treated and control cells, 11 CTKs were detected in the extracellular space while 6 were detected intracellularly. We found that muscle cells are enriched in isopentenyladenine (iP) species (from free base, riboside to nucleotide forms), and that extracellular levels are increased after LPS treatment. Our study establishes that muscle cells express various forms of CTKs, and that CTK levels are responsive to LPS-induced cell stress, suggesting a role for CTKs in intra- and extracellular signaling of mammalian cells.
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Affiliation(s)
- Stephanie W. Tobin
- Department of BiologyTrent UniversityPeterboroughOntarioCanada
- Environmental and Life Sciences Graduate ProgramTrent UniversityPeterboroughOntarioCanada
| | - Dev Seneviratne
- Environmental and Life Sciences Graduate ProgramTrent UniversityPeterboroughOntarioCanada
- Department of Forensic ScienceTrent UniversityPeterboroughCanada
| | - Lorna Phan
- Department of BiologyTrent UniversityPeterboroughOntarioCanada
| | - Mark Seegobin
- Department of BiologyTrent UniversityPeterboroughOntarioCanada
- Environmental and Life Sciences Graduate ProgramTrent UniversityPeterboroughOntarioCanada
| | | | - Beth Westby
- Department of BiologyTrent UniversityPeterboroughOntarioCanada
| | - Anna Kisiala
- Department of BiologyTrent UniversityPeterboroughOntarioCanada
| | - Sanela Martic
- Environmental and Life Sciences Graduate ProgramTrent UniversityPeterboroughOntarioCanada
- Department of Forensic ScienceTrent UniversityPeterboroughCanada
| | - Craig R. Brunetti
- Department of BiologyTrent UniversityPeterboroughOntarioCanada
- Environmental and Life Sciences Graduate ProgramTrent UniversityPeterboroughOntarioCanada
| | - R. J. Neil Emery
- Department of BiologyTrent UniversityPeterboroughOntarioCanada
- Environmental and Life Sciences Graduate ProgramTrent UniversityPeterboroughOntarioCanada
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22
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Zhou Y, Suo W, Zhang X, Liang J, Zhao W, Wang Y, Li H, Ni Q. Targeting mitochondrial quality control for diabetic cardiomyopathy: Therapeutic potential of hypoglycemic drugs. Biomed Pharmacother 2023; 168:115669. [PMID: 37820568 DOI: 10.1016/j.biopha.2023.115669] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/23/2023] [Accepted: 10/06/2023] [Indexed: 10/13/2023] Open
Abstract
Diabetic cardiomyopathy is a chronic cardiovascular complication caused by diabetes that is characterized by changes in myocardial structure and function, ultimately leading to heart failure and even death. Mitochondria serve as the provider of energy to cardiomyocytes, and mitochondrial dysfunction plays a central role in the development of diabetic cardiomyopathy. In response to a series of pathological changes caused by mitochondrial dysfunction, the mitochondrial quality control system is activated. The mitochondrial quality control system (including mitochondrial biogenesis, fusion and fission, and mitophagy) is core to maintaining the normal structure of mitochondria and performing their normal physiological functions. However, mitochondrial quality control is abnormal in diabetic cardiomyopathy, resulting in insufficient mitochondrial fusion and excessive fission within the cardiomyocyte, and fragmented mitochondria are not phagocytosed in a timely manner, accumulating within the cardiomyocyte resulting in cardiomyocyte injury. Currently, there is no specific therapy or prevention for diabetic cardiomyopathy, and glycemic control remains the mainstay. In this review, we first elucidate the pathogenesis of diabetic cardiomyopathy and explore the link between pathological mitochondrial quality control and the development of diabetic cardiomyopathy. Then, we summarize how clinically used hypoglycemic agents (including sodium-glucose cotransport protein 2 inhibitions, glucagon-like peptide-1 receptor agonists, dipeptidyl peptidase-4 inhibitors, thiazolidinediones, metformin, and α-glucosidase inhibitors) exert cardioprotective effects to treat and prevent diabetic cardiomyopathy by targeting the mitochondrial quality control system. In addition, the mechanisms of complementary alternative therapies, such as active ingredients of traditional Chinese medicine, exercise, and lifestyle, targeting mitochondrial quality control for the treatment of diabetic cardiomyopathy are also added, which lays the foundation for the excavation of new diabetic cardioprotective drugs.
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Affiliation(s)
- Yutong Zhou
- Guang'an Men Hospital, China Academy of Chinese Medicine, Beijing 100053, China
| | - Wendong Suo
- LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Xinai Zhang
- Guang'an Men Hospital, China Academy of Chinese Medicine, Beijing 100053, China
| | - Jiaojiao Liang
- Zhengzhou Shuqing Medical College, Zhengzhou 450064, China
| | - Weizhe Zhao
- College of Traditional Chinese Medicine, Beijing University of Traditional Chinese Medicine, Beijing 100105, China
| | - Yue Wang
- Capital Medical University, Beijing 100069, China
| | - Hong Li
- LongHua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China.
| | - Qing Ni
- Guang'an Men Hospital, China Academy of Chinese Medicine, Beijing 100053, China.
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23
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Talukdar PD, Chatterji U. Transcriptional co-activators: emerging roles in signaling pathways and potential therapeutic targets for diseases. Signal Transduct Target Ther 2023; 8:427. [PMID: 37953273 PMCID: PMC10641101 DOI: 10.1038/s41392-023-01651-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/27/2023] [Accepted: 09/10/2023] [Indexed: 11/14/2023] Open
Abstract
Specific cell states in metazoans are established by the symphony of gene expression programs that necessitate intricate synergic interactions between transcription factors and the co-activators. Deregulation of these regulatory molecules is associated with cell state transitions, which in turn is accountable for diverse maladies, including developmental disorders, metabolic disorders, and most significantly, cancer. A decade back most transcription factors, the key enablers of disease development, were historically viewed as 'undruggable'; however, in the intervening years, a wealth of literature validated that they can be targeted indirectly through transcriptional co-activators, their confederates in various physiological and molecular processes. These co-activators, along with transcription factors, have the ability to initiate and modulate transcription of diverse genes necessary for normal physiological functions, whereby, deregulation of such interactions may foster tissue-specific disease phenotype. Hence, it is essential to analyze how these co-activators modulate specific multilateral processes in coordination with other factors. The proposed review attempts to elaborate an in-depth account of the transcription co-activators, their involvement in transcription regulation, and context-specific contributions to pathophysiological conditions. This review also addresses an issue that has not been dealt with in a comprehensive manner and hopes to direct attention towards future research that will encompass patient-friendly therapeutic strategies, where drugs targeting co-activators will have enhanced benefits and reduced side effects. Additional insights into currently available therapeutic interventions and the associated constraints will eventually reveal multitudes of advanced therapeutic targets aiming for disease amelioration and good patient prognosis.
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Affiliation(s)
- Priyanka Dey Talukdar
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India
| | - Urmi Chatterji
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
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Marzan AL, Chitti SV. Unravelling the Role of Cancer Cell-Derived Extracellular Vesicles in Muscle Atrophy, Lipolysis, and Cancer-Associated Cachexia. Cells 2023; 12:2598. [PMID: 37998333 PMCID: PMC10670053 DOI: 10.3390/cells12222598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/24/2023] [Accepted: 11/07/2023] [Indexed: 11/25/2023] Open
Abstract
Cancer-associated cachexia is a metabolic syndrome that causes significant reduction in whole-body weight due to excessive loss of muscle mass accompanied by loss of fat mass. Reduced food intake and several metabolic abnormalities, such as increased energy expenditure, excessive catabolism, and inflammation, are known to drive cachexia. It is well documented that cancer cells secrete EVs in abundance which can be easily taken up by the recipient cell. The cargo biomolecules carried by the EVs have the potential to alter the signalling pathways and function of the recipient cells. EV cargo includes proteins, nucleic acids, lipids, and metabolites. Tumour-secreted EVs have been found to alter the metabolic and biological functions of adipose and muscle tissue, which aids in the development of the cachexia phenotype. To date, no medical intervention or FDA-approved drug exists that can completely reverse cachexia. Therefore, understanding how cancer-derived EVs contribute to the onset and progression of cancer-associated cachexia may help with the identification of new biomarkers as well as provide access to novel treatment alternatives. The goal of this review article is to discuss the most recent research on cancer-derived EVs and their function in cellular crosstalk that promotes catabolism in muscle and adipose tissue during cancer-induced cachexia.
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Affiliation(s)
| | - Sai V. Chitti
- Department of Biochemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC 3086, Australia;
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Liu L, Li Y, Chen G, Chen Q. Crosstalk between mitochondrial biogenesis and mitophagy to maintain mitochondrial homeostasis. J Biomed Sci 2023; 30:86. [PMID: 37821940 PMCID: PMC10568841 DOI: 10.1186/s12929-023-00975-7] [Citation(s) in RCA: 82] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 09/13/2023] [Indexed: 10/13/2023] Open
Abstract
Mitochondrial mass and quality are tightly regulated by two essential and opposing mechanisms, mitochondrial biogenesis (mitobiogenesis) and mitophagy, in response to cellular energy needs and other cellular and environmental cues. Great strides have been made to uncover key regulators of these complex processes. Emerging evidence has shown that there exists a tight coordination between mitophagy and mitobiogenesis, and their defects may cause many human diseases. In this review, we will first summarize the recent advances made in the discovery of molecular regulations of mitobiogenesis and mitophagy and then focus on the mechanism and signaling pathways involved in the simultaneous regulation of mitobiogenesis and mitophagy in the response of tissue or cultured cells to energy needs, stress, or pathophysiological conditions. Further studies of the crosstalk of these two opposing processes at the molecular level will provide a better understanding of how the cell maintains optimal cellular fitness and function under physiological and pathophysiological conditions, which holds promise for fighting aging and aging-related diseases.
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Affiliation(s)
- Lei Liu
- Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China.
- Institute for Stem Cell and Regenerative Medicine, Beijing, China.
| | - Yanjun Li
- Center of Cell Response, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Guo Chen
- Center of Cell Response, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Quan Chen
- Center of Cell Response, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China.
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26
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Guo M, Zhang J, Ma Y, Zhu Z, Zuo H, Yao J, Wu X, Wang D, Yu J, Meng M, Liu C, Zhang Y, Chen J, Lu J, Ding S, Hu C, Ma X, Xu L. AAV-Mediated nuclear localized PGC1α4 delivery in muscle ameliorates sarcopenia and aging-associated metabolic dysfunctions. Aging Cell 2023; 22:e13961. [PMID: 37584432 PMCID: PMC10577532 DOI: 10.1111/acel.13961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/17/2023] [Accepted: 07/31/2023] [Indexed: 08/17/2023] Open
Abstract
Sarcopenia is characterized of muscle mass loss and functional decline in elder individuals which severely affects human physical activity, metabolic homeostasis, and life quality. Physical exercise is considered effective in combating muscle atrophy and sarcopenia, yet it is not feasible to elders with limited mobility. PGC-1α4, a short isoform of PGC-1α, is strongly induced in muscle under resistance training, and promotes muscle hypertrophy. In the present study, we showed that the transcriptional levels and nuclear localization of PGC1α4 was reduced during aging, accompanied with muscle dystrophic morphology, and gene programs. We thus designed NLS-PGC1α4 and ectopically express it in myotubes to enhance PGC1α4 levels and maintain its location in nucleus. Indeed, NLS-PGC1α4 overexpression increased muscle sizes in myotubes. In addition, by utilizing AAV-NLS-PGC1α4 delivery into gastrocnemius muscle, we found that it could improve sarcopenia with grip strength, muscle weights, fiber size and molecular phenotypes, and alleviate age-associated adiposity, insulin resistance and hepatic steatosis, accompanied with altered gene signatures. Mechanistically, we demonstrated that NLS-PGC-1α4 improved insulin signaling and enhanced glucose uptake in skeletal muscle. Besides, via RNA-seq analysis, we identified myokines IGF1 and METRNL as potential targets of NLS-PGC-1α4 that possibly mediate the improvement of muscle and adipose tissue functionality and systemic energy metabolism in aged mice. Moreover, we found a negative correlation between PGC1α4 and age in human skeletal muscle. Together, our results revealed that NLS-PGC1α4 overexpression improves muscle physiology and systematic energy homeostasis during aging and suggested it as a potent therapeutic strategy against sarcopenia and aging-associated metabolic diseases.
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Affiliation(s)
- Mingwei Guo
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
| | - Jun Zhang
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
| | - Ying Ma
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
| | - Zhenzhong Zhu
- Department of OrthopedicsSixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Hui Zuo
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
| | - Jing Yao
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
| | - Xia Wu
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
| | - Dongmei Wang
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
| | - Jian Yu
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
- Department of Endocrinology and MetabolismFengxian Central Hospital Affiliated to Southern Medical UniversityShanghaiChina
| | - Meiyao Meng
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
| | - Caizhi Liu
- Department of Endocrinology and MetabolismFengxian Central Hospital Affiliated to Southern Medical UniversityShanghaiChina
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's HospitalShanghaiChina
| | - Yi Zhang
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's HospitalShanghaiChina
| | - Jiangrong Chen
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
| | - Jian Lu
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, College of Physical Education and HealthEast China Normal UniversityShanghaiChina
| | - Shuzhe Ding
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention of Ministry of Education, College of Physical Education and HealthEast China Normal UniversityShanghaiChina
| | - Cheng Hu
- Department of Endocrinology and MetabolismFengxian Central Hospital Affiliated to Southern Medical UniversityShanghaiChina
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's HospitalShanghaiChina
| | - Xinran Ma
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
- Department of Endocrinology and MetabolismFengxian Central Hospital Affiliated to Southern Medical UniversityShanghaiChina
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology and School of Life SciencesEast China Normal UniversityShanghaiChina
- Chongqing Key Laboratory of Precision OpticsChongqing Institute of East China Normal UniversityChongqingChina
| | - Lingyan Xu
- Shanghai Key Laboratory of Regulatory BiologyInstitute of Biomedical Sciences and School of Life Sciences, East China Normal UniversityShanghaiChina
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Mihaylov SR, Castelli LM, Lin YH, Gül A, Soni N, Hastings C, Flynn HR, Păun O, Dickman MJ, Snijders AP, Goldstone R, Bandmann O, Shelkovnikova TA, Mortiboys H, Ultanir SK, Hautbergue GM. The master energy homeostasis regulator PGC-1α exhibits an mRNA nuclear export function. Nat Commun 2023; 14:5496. [PMID: 37679383 PMCID: PMC10485026 DOI: 10.1038/s41467-023-41304-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 08/30/2023] [Indexed: 09/09/2023] Open
Abstract
PGC-1α plays a central role in maintaining mitochondrial and energy metabolism homeostasis, linking external stimuli to transcriptional co-activation of genes involved in adaptive and age-related pathways. The carboxyl-terminus encodes a serine/arginine-rich (RS) region and an RNA recognition motif, however the RNA-processing function(s) were poorly investigated over the past 20 years. Here, we show that the RS domain of human PGC-1α directly interacts with RNA and the nuclear RNA export receptor NXF1. Inducible depletion of PGC-1α and expression of RNAi-resistant RS-deleted PGC-1α further demonstrate that its RNA/NXF1-binding activity is required for the nuclear export of some canonical mitochondrial-related mRNAs and mitochondrial homeostasis. Genome-wide investigations reveal that the nuclear export function is not strictly linked to promoter-binding, identifying in turn novel regulatory targets of PGC-1α in non-homologous end-joining and nucleocytoplasmic transport. These findings provide new directions to further elucidate the roles of PGC-1α in gene expression, metabolic disorders, aging and neurodegeneration.
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Affiliation(s)
- Simeon R Mihaylov
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK
- Kinases and Brain Development Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Lydia M Castelli
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK
| | - Ya-Hui Lin
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK
| | - Aytac Gül
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK
| | - Nikita Soni
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK
| | - Christopher Hastings
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK
| | - Helen R Flynn
- Proteomics Science Technology Platform, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Oana Păun
- Neural Stem Cell Biology Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Mark J Dickman
- Department of Chemical and Biological Engineering, Sir Robert Hadfield Building, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK
- Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
| | - Ambrosius P Snijders
- Proteomics Science Technology Platform, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- Life Science Mass Spectrometry, Bruker Daltonics, Banner Lane, Coventry, CV4 9GH, UK
| | - Robert Goldstone
- Bioinformatics and Biostatistics Science and Technology Platform, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Oliver Bandmann
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK
- Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
- Healthy Lifespan Institute (HELSI), University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
| | - Tatyana A Shelkovnikova
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK
- Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
| | - Heather Mortiboys
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK
- Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
- Healthy Lifespan Institute (HELSI), University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
| | - Sila K Ultanir
- Kinases and Brain Development Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Guillaume M Hautbergue
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, 385 Glossop Road, Sheffield, S10 2HQ, UK.
- Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.
- Healthy Lifespan Institute (HELSI), University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.
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Yang YN, Zhang MQ, Yu FL, Han B, Bao MY, Yan-He, Li X, Zhang Y. Peroxisom proliferator-activated receptor-γ coactivator-1α in neurodegenerative disorders: A promising therapeutic target. Biochem Pharmacol 2023; 215:115717. [PMID: 37516277 DOI: 10.1016/j.bcp.2023.115717] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 07/31/2023]
Abstract
Neurodegenerative disorders (NDDs) are characterized by progressive loss of selectively vulnerable neuronal populations and myelin sheath, leading to behavioral and cognitive dysfunction that adversely affect the quality of life. Identifying novel therapies that attenuate the progression of NDDs would be of significance. Peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α), a widely expressed transcriptional regulator, modulates the expression of genes engaged in mitochondrial biosynthesis, metabolic regulation, and oxidative stress (OS). Emerging evidences point to the strong connection between PGC-1α and NDDs, suggesting its positive impaction on the progression of NDDs. Therefore, it is urgent to gain a deeper and broader understanding between PGC-1α and NDDs. To this end, this review presents a comprehensive overview of PGC-1α, including its basic characteristics, the post-translational modulations, as well as the interacting transcription factors. Secondly, the pathogenesis of PGC-1α in various NDDs, such as Alzheimer's (AD), Parkinson's (PD), and Huntington's disease (HD) is briefly discussed. Additionally, this study summarizes the underlying mechanisms that PGC-1α is neuroprotective in NDDs via regulating neuroinflammation, OS, and mitochondrial dysfunction. Finally, we briefly outline the shortcomings of current NDDs drug therapy, and summarize the functions and potential applications of currently available PGC-1α modulators (activator or inhibitors). Generally, this review updates our insight of the important role of PGC-1α on the development of NDDs, and provides a promising therapeutic target/ drug for the treatment of NDDs.
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Affiliation(s)
- Ya-Na Yang
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Mao-Qing Zhang
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Feng-Lin Yu
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Bing Han
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Ming-Yue Bao
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Yan-He
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Xing Li
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Yuan Zhang
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China.
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Weng X, Wang C, Yuan YU, Wang Z, Kuang J, Yan XU, Chen H. Effect of Cold Exposure and Exercise on Insulin Sensitivity and Serum Free Fatty Acids in Obese Rats. Med Sci Sports Exerc 2023; 55:1409-1415. [PMID: 36924336 DOI: 10.1249/mss.0000000000003173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
PURPOSE This study aimed to explore the effect of exercise and cold exposure on insulin sensitivity and the level of serum free fatty acids (FFA) in diet-induced obese rats. METHODS Sixty-four diet-induced obese rats were randomly assigned to eight groups: room temperature-sedentary, room temperature-exercise, acute cold exposure-sedentary, acute cold exposure-exercise, intermittent cold exposure-sedentary, intermittent cold exposure-exercise, sustained cold exposure-sedentary, and sustained cold exposure-exercise. After the interventions, the homeostatic model assessment for insulin resistance (HOMA-IR) values, the level of serum FFA, subcutaneous fat ratio (SFR) and visceral fat ratio, enzyme activities of adipose triglyceride lipase, and lipoprotein lipase (LPL) in inguinal adipose tissue, and protein expression of PGC1-α and p38 MAPK in skeletal muscle were investigated. RESULTS We found that exercise ( P = 0.0136) and cold exposure ( P < 0.0001) reduced HOMA-IR values independently. Exercise reduced serum FFA ( P = 0.0041), whereas cold exposure did not affect them. Moreover, the HOMA-IR values were positively correlated with the serum FFA levels ( r = 0.32, P = 0.01). SFR or visceral fat ratio was coordinately reduced by the interaction (for SFR, P = 0.0015) or opposing main effects between or of cold exposure and exercise, supporting the reduction of serum FFA. However, cold exposure or exercise increased the activity of adipose triglyceride lipase and LPL independently or interactively (for LPL, P = 0.0143), suggesting an increase in serum FFA. Finally, cold exposure and exercise enhanced protein expression of PGC1-α and p38 MAPK independently or interactively (for p38 MAPK, P = 0.0226), suggesting increased uptake and oxidation of serum FFA in muscle. CONCLUSIONS These results suggest that the combination of exercise and cold exposure may result in more serum FFA utilization than production and thus lead to reduced serum FFA and increased insulin sensitivity.
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Affiliation(s)
- Xiquan Weng
- College of Exercise and Health, Guangzhou Sport University, Guangzhou, Guangdong Province, CHINA
| | | | - Y U Yuan
- College of Exercise and Health, Guangzhou Sport University, Guangzhou, Guangdong Province, CHINA
| | - Zhenhuan Wang
- Institute for Health and Sport, Victoria University, Melbourne, VIC, AUSTRALIA
| | | | | | - Hao Chen
- College of Exercise and Health, Guangzhou Sport University, Guangzhou, Guangdong Province, CHINA
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Chen H, Wu C, Lv Q, Li M, Ren L. Targeting Mitochondrial Homeostasis: The Role of Acupuncture in Depression Treatment. Neuropsychiatr Dis Treat 2023; 19:1741-1753. [PMID: 37546517 PMCID: PMC10404048 DOI: 10.2147/ndt.s421540] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/24/2023] [Indexed: 08/08/2023] Open
Abstract
Background Depression is a common mental health disorder characterized by persistent feelings of sadness, loss of interest or pleasure, and a range of physical and cognitive symptoms. It affects people of all ages and can significantly impact their daily functioning and quality of life. Mitochondrial homeostasis plays an important role in the pathogenesis of depression. Mitochondrial homeostasis includes mitophagy, mitochondrial oxidative stress, mitoptosis, mitochondrial biogenesis, and mitochondrial dynamics. The regulation of mitochondrial homeostasis is the key link in the prevention and treatment of depression. Methods In this article, we focus on the core link of depression-mitochondrial homeostasis and summarize the research progress of acupuncture targeting mitochondrial homeostasis in the treatment of depression in recent years, so as to provide ideas and experimental basis for the research and formulation of more appropriate depression treatment strategies. Results Acupuncture has been found to regulate mitochondrial homeostasis (by modulating mitochondrial autophagy, reducing mitochondrial oxidative stress, inhibiting mitochondrial fission, inducing mitochondrial biogenesis, and maintaining mitochondrial dynamics), alleviate depression-like behavior, and regulate signal pathways and key proteins. Conclusion Here, we highlight the role of acupuncture in the treatment of depression. A comprehensive exploration of the impact of acupuncture on mitochondrial homeostasis could potentially present a novel mechanism for treating depression and offer fresh perspectives for the treatment of patients with clinical depression.
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Affiliation(s)
- Haiyang Chen
- Department of Acupuncture and Moxibustion, Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, People’s Republic of China
| | - Chenlin Wu
- Graduate School, Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, People’s Republic of China
| | - Qin Lv
- Graduate School, Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, People’s Republic of China
| | - Mingjie Li
- Department of Acupuncture and Moxibustion, Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, People’s Republic of China
| | - Lu Ren
- Graduate School, Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, People’s Republic of China
- Mental Disorders Research Laboratory, Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, People’s Republic of China
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31
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Li C, Song Z, Gao P, Duan W, Liu X, Liang S, Gong Q, Guo J. Transaldolase inhibits CD36 expression by modulating glutathione-p38 signaling, exerting protective effects against macrophage foam cell formation. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1496-1505. [PMID: 37528662 PMCID: PMC10520467 DOI: 10.3724/abbs.2023146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/19/2023] [Indexed: 08/03/2023] Open
Abstract
In atherosclerosis, macrophage-derived foam cell formation is considered to be a hallmark of the pathological process; this occurs via the uptake of modified lipoproteins. In the present study, we aim to determine the role of transaldolase in foam cell formation and atherogenesis and reveal the mechanisms underlying its role. Bone marrow-derived macrophages (BMDMs) isolated from mice successfully form foam cells after treatment with oxidized low-density lipoprotein (80 μg/mL). Elevated transaldolase levels in the foam cell model are assessed by quantitative polymerase chain reaction and western blot analysis. Transaldolase overexpression and knockdown in BMDMs are achieved via plasmid transfection and small interfering RNA technology, respectively. We find that transaldolase overexpression effectively attenuates, whereas transaldolase knockdown accelerates, macrophage-derived foam cell formation through the inhibition or activation of cholesterol uptake mediated by the scavenger receptor cluster of differentiation 36 (CD36) in a p38 mitogen-activated protein kinase (MAPK) signaling-dependent manner. Transaldolase-mediated glutathione (GSH) homeostasis is identified as the upstream regulator of p38 MAPK-mediated CD36-dependent cholesterol uptake in BMDMs. Transaldolase upregulates GSH production, thereby suppressing p38 activity and reducing the CD36 level, ultimately preventing foam cell formation and atherosclerosis. Thus, our findings indicate that the transaldolase-GSH-p38-CD36 axis may represent a promising therapeutic target for atherosclerosis.
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Affiliation(s)
- Chengyi Li
- Department of ImmunologySchool of MedicineYangtze UniversityJingzhou434023China
| | - Zihao Song
- Department of ImmunologySchool of MedicineYangtze UniversityJingzhou434023China
| | - Pengyue Gao
- Department of ImmunologySchool of MedicineYangtze UniversityJingzhou434023China
| | - Wei Duan
- Department of OncologyJingzhou Hospital Affiliated to Yangtze UniversityJingzhou434023China
| | - Xiu Liu
- Department of Cardiovascular SurgeryNanfang HospitalSouthern Medical UniversityGuangzhou510515China
| | - Sijia Liang
- Department of Pharmacologyand Cardiac & Cerebral Vascular Research CenterZhongshan School of MedicineSun Yat-Sen UniversityGuangzhou510080China
| | - Quan Gong
- Department of ImmunologySchool of MedicineYangtze UniversityJingzhou434023China
| | - Jiawei Guo
- Department of ImmunologySchool of MedicineYangtze UniversityJingzhou434023China
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Shi F, de Fatima Silva F, Liu D, Patel HU, Xu J, Zhang W, Türk C, Krüger M, Collins S. Salt-inducible kinase inhibition promotes the adipocyte thermogenic program and adipose tissue browning. Mol Metab 2023; 74:101753. [PMID: 37321371 PMCID: PMC10319839 DOI: 10.1016/j.molmet.2023.101753] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 05/30/2023] [Accepted: 06/08/2023] [Indexed: 06/17/2023] Open
Abstract
OBJECTIVE Norepinephrine stimulates the adipose tissue thermogenic program through a β-adrenergic receptor (βAR)-cyclic adenosine monophosphate (cAMP)-protein kinase A (PKA) signaling cascade. We discovered that a noncanonical activation of the mechanistic target of rapamycin complex 1 (mTORC1) by PKA is required for the βAR-stimulation of adipose tissue browning. However, the downstream events triggered by PKA-phosphorylated mTORC1 activation that drive this thermogenic response are not well understood. METHODS We used a proteomic approach of Stable Isotope Labeling by/with Amino acids in Cell culture (SILAC) to characterize the global protein phosphorylation profile in brown adipocytes treated with the βAR agonist. We identified salt-inducible kinase 3 (SIK3) as a candidate mTORC1 substrate and further tested the effect of SIK3 deficiency or SIK inhibition on the thermogenic gene expression program in brown adipocytes and in mouse adipose tissue. RESULTS SIK3 interacts with RAPTOR, the defining component of the mTORC1 complex, and is phosphorylated at Ser884 in a rapamycin-sensitive manner. Pharmacological SIK inhibition by a pan-SIK inhibitor (HG-9-91-01) in brown adipocytes increases basal Ucp1 gene expression and restores its expression upon blockade of either mTORC1 or PKA. Short-hairpin RNA (shRNA) knockdown of Sik3 augments, while overexpression of SIK3 suppresses, Ucp1 gene expression in brown adipocytes. The regulatory PKA phosphorylation domain of SIK3 is essential for its inhibition. CRISPR-mediated Sik3 deletion in brown adipocytes increases type IIa histone deacetylase (HDAC) activity and enhances the expression of genes involved in thermogenesis such as Ucp1, Pgc1α, and mitochondrial OXPHOS complex protein. We further show that HDAC4 interacts with PGC1α after βAR stimulation and reduces lysine acetylation in PGC1α. Finally, a SIK inhibitor well-tolerated in vivo (YKL-05-099) can stimulate the expression of thermogenesis-related genes and browning of mouse subcutaneous adipose tissue. CONCLUSIONS Taken together, our data reveal that SIK3, with the possible contribution of other SIKs, functions as a phosphorylation switch for β-adrenergic activation to drive the adipose tissue thermogenic program and indicates that more work to understand the role of the SIKs is warranted. Our findings also suggest that maneuvers targeting SIKs could be beneficial for obesity and related cardiometabolic disease.
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Affiliation(s)
- Fubiao Shi
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
| | - Flaviane de Fatima Silva
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo 05508-000, Brazil
| | - Dianxin Liu
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Hari U Patel
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Jonathan Xu
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Wei Zhang
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Clara Türk
- CECAD Research Center, Institute for Genetics, University of Cologne, Cologne 50931, Germany
| | - Marcus Krüger
- CECAD Research Center, Institute for Genetics, University of Cologne, Cologne 50931, Germany; Center for Molecular Medicine (CMMC), University of Cologne, Cologne 50931, Germany
| | - Sheila Collins
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
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Dent JR, Stocks B, Campelj DG, Philp A. Transient changes to metabolic homeostasis initiate mitochondrial adaptation to endurance exercise. Semin Cell Dev Biol 2023; 143:3-16. [PMID: 35351374 DOI: 10.1016/j.semcdb.2022.03.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 01/26/2022] [Accepted: 03/19/2022] [Indexed: 12/14/2022]
Abstract
Endurance exercise is well established to increase mitochondrial content and function in skeletal muscle, a process termed mitochondrial biogenesis. Current understanding is that exercise initiates skeletal muscle mitochondrial remodeling via modulation of cellular nutrient, energetic and contractile stress pathways. These subtle changes in the cellular milieu are sensed by numerous transduction pathways that serve to initiate and coordinate an increase in mitochondrial gene transcription and translation. The result of these acute signaling events is the promotion of growth and assembly of mitochondria, coupled to a greater capacity for aerobic ATP provision in skeletal muscle. The aim of this review is to highlight the acute metabolic events induced by endurance exercise and the subsequent molecular pathways that sense this transient change in cellular homeostasis to drive mitochondrial adaptation and remodeling.
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Affiliation(s)
- Jessica R Dent
- Department of Surgery, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Ben Stocks
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark
| | - Dean G Campelj
- Mitochondrial Metabolism and Ageing Laboratory, Healthy Ageing Research Theme, Garvan Institute of Medical Research, Sydney, Australia
| | - Andrew Philp
- Mitochondrial Metabolism and Ageing Laboratory, Healthy Ageing Research Theme, Garvan Institute of Medical Research, Sydney, Australia; St Vincent's Medical School, UNSW Sydney, Sydney, Australia.
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34
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Gurd BJ, Menezes ES, Arhen BB, Islam H. Impacts of altered exercise volume, intensity, and duration on the activation of AMPK and CaMKII and increases in PGC-1α mRNA. Semin Cell Dev Biol 2023; 143:17-27. [PMID: 35680515 DOI: 10.1016/j.semcdb.2022.05.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 04/11/2022] [Accepted: 05/18/2022] [Indexed: 10/18/2022]
Abstract
The purpose of this review is to explore and discuss the impacts of augmented training volume, intensity, and duration on the phosphorylation/activation of key signaling protein - AMPK, CaMKII and PGC-1α - involved in the initiation of mitochondrial biogenesis. Specifically, we explore the impacts of augmented exercise protocols on AMP/ADP and Ca2+ signaling and changes in post exercise PGC - 1α gene expression. Although AMP/ADP concentrations appear to increase with increasing intensity and during extended durations of higher intensity exercise AMPK activation results are varied with some results supporting and intensity/duration effect and others not. Similarly, CaMKII activation and signaling results following exercise of different intensities and durations are inconsistent. The PGC-1α literature is equally inconsistent with only some studies demonstrating an effect of intensity on post exercise mRNA expression. We present a novel meta-analysis that suggests that the inconsistency in the PGC-1α literature may be due to sample size and statistical power limitations owing to the effect of intensity on PGC-1α expression being small. There is little data available regarding the impact of exercise duration on PGC-1α expression. We highlight the need for future well designed, adequately statistically powered, studies to clarify our understanding of the effects of volume, intensity, and duration on the induction of mitochondrial biogenesis by exercise.
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Affiliation(s)
- Brendon J Gurd
- School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada.
| | | | - Benjamin B Arhen
- School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada
| | - Hashim Islam
- School of Health and Exercise Sciences, University of British Columbia Okanagan, Kelowna, BC, Canada
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Li X, Fu X, Li H, Gao Y, Wang W, Liu Z, Shen Y. Leptin accelerates BMSC transformation into vertebral epiphyseal plate chondrocytes by activating SENP1-mediated deSUMOylation of SIRT3. FEBS Open Bio 2023; 13:293-306. [PMID: 36537765 PMCID: PMC9900084 DOI: 10.1002/2211-5463.13539] [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: 08/21/2022] [Revised: 11/17/2022] [Accepted: 12/19/2022] [Indexed: 01/14/2023] Open
Abstract
Bone marrow mesenchymal stem cells (BMSCs) are capable of multidirectional differentiation, and engrafted BMSCs can be used to replace damaged chondrocytes for treatment of intervertebral disc disease. However, chondroblast differentiation of implanted BMSCs is inhibited by the anoxic environment of the articular cavity. Here, we found that leptin enhanced the transformation of BMSCs into chondrocytes under hypoxic conditions. BMSCs isolated from mice were cultured in medium supplemented with leptin under hypoxia. The expression of MFN1/2 and OPA1 were increased only in BMSCs cultured in an anoxic environment. In addition, in hypoxic environments cell energy metabolism relies on glycolysis regulated by leptin, rather than by mitochondrial oxidation. The expression of the de-SUMOylation protease SENP1 was elevated, leading to SIRT3-mediated activation of PGC-1α; these processes were regulated by CREB phosphorylation, and promoted mitochondrial fusion and cell differentiation. The chondrogenic activity of BMSCs isolated from SIRT3-knockout mice was lower than that of BMSCs isolated from wildtype mice. Implantation of SIRT3-knockout murine-derived BMSCs did not significantly improve the articular cartilage layer of the disc. In conclusion, the hypoxic microenvironment promoted BMSC differentiation into chondrocytes, whereas osteoblast differentiation was inhibited. SENP1 activated SIRT3 through the deSUMOylation of mitochondria and eliminated the antagonistic effect of SIRT3 acetylation on phosphorylation. When phosphorylation activity of CREB was increased, phosphorylated CREB is then transferred to the nucleus, affecting PGC-1α. This promotes mitochondrial fusion and differentiation of BMSCs. Leptin not only maintains chondrogenic differentiation homeostasis of BMSCs, but also provides energy for differentiation of BMSCs under hypoxic conditions through glycolysis.
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Affiliation(s)
- Xiaomiao Li
- Department of Orthopedics, Renji Hospital, School of MedicineShanghai Jiaotong UniversityChina
| | - Xiaodong Fu
- Department of Orthopedics, Renji Hospital, School of MedicineShanghai Jiaotong UniversityChina
| | - Hao Li
- Department of Orthopedics, Renji Hospital, School of MedicineShanghai Jiaotong UniversityChina
| | - Yingjian Gao
- Department of Orthopedics, Renji Hospital, School of MedicineShanghai Jiaotong UniversityChina
| | - Weili Wang
- Department of Orthopedics, Renji Hospital, School of MedicineShanghai Jiaotong UniversityChina
| | - Zude Liu
- Department of Orthopedics, Renji Hospital, School of MedicineShanghai Jiaotong UniversityChina
| | - Yi Shen
- Department of Orthopedics, Renji Hospital, School of MedicineShanghai Jiaotong UniversityChina
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Global Trends in Research of Mitochondrial Biogenesis over past 20 Years: A Bibliometric Analysis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:7291284. [PMID: 36644577 PMCID: PMC9833928 DOI: 10.1155/2023/7291284] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/29/2022] [Accepted: 12/07/2022] [Indexed: 01/06/2023]
Abstract
Background Mitochondrial biogenesis-related studies have increased rapidly within the last 20 years, whereas there has been no bibliometric analysis on this topic to reveal relevant progress and development trends. Objectives In this study, a bibliometric approach was adopted to summarize and analyze the published literature in this field of mitochondrial biogenesis over the past 20 years to reveal the major countries/regions, institutions and authors, core literature and journal, research hotspots and frontiers in this field. Methods The Web of Science Core Collection database was used for literature retrieval and dataset export. The CiteSpace and VOSviewer visual mapping software were used to explore research collaboration between countries/regions, institutions and authors, distribution of subject categories, core journals, research hotspots, and frontiers in this field. Results In the last 20 years, the annual number of publications has shown an increasing trend yearly. The USA, China, and South Korea have achieved fruitful research results in this field, among which Duke University and Chinese Academy of Sciences are the main research institutions. Rick G Schnellmann, Claude A Piantadosi, and Hagir B Suliman are the top three authors in terms of number of publications, while RC Scarpulla, ZD Wu, and P Puigserver are the top three authors in terms of cocitation frequency. PLOS One, Biochemical and Biophysical Research Communications, and Journal of Biological Chemistry are the top three journals in terms of number of articles published. Three papers published by Richard C Scarpulla have advanced this field and are important literature for understanding the field. Mechanistic studies on mitochondrial biosynthesis have been a long-standing hot topic; the main keywords include skeletal muscle, oxidative stress, gene expression, activation, and nitric oxide, and autophagy and apoptosis have been important research directions in recent years. Conclusion These results summarize the major research findings in the field of mitochondrial biogenesis over the past 20 years in various aspects, highlighting the major research hotspots and possible future research directions and helping researchers to quickly grasp the overview of the developments in this field.
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Pathak SJ, Baar K. Ketogenic Diets and Mitochondrial Function: Benefits for Aging But Not for Athletes. Exerc Sport Sci Rev 2023; 51:27-33. [PMID: 36123723 PMCID: PMC9762714 DOI: 10.1249/jes.0000000000000307] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/17/2022] [Indexed: 12/24/2022]
Abstract
As humans age, we lose skeletal muscle mass, even in the absence of disease (sarcopenia), increasing the risk of death. Low mitochondrial mass and activity contributes to sarcopenia. It is our hypothesis that a ketogenic diet improves skeletal muscle mitochondrial mass and function when they have declined because of aging or disease, but not in athletes where mitochondrial quality is high.
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Affiliation(s)
- Suraj J. Pathak
- Department of Neurobiology, Physiology and Behavior
- Molecular, Cellular, and Integrative Physiology Graduate Group
| | - Keith Baar
- Department of Neurobiology, Physiology and Behavior
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, Davis, CA
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Blazev R, Carl CS, Ng YK, Molendijk J, Voldstedlund CT, Zhao Y, Xiao D, Kueh AJ, Miotto PM, Haynes VR, Hardee JP, Chung JD, McNamara JW, Qian H, Gregorevic P, Oakhill JS, Herold MJ, Jensen TE, Lisowski L, Lynch GS, Dodd GT, Watt MJ, Yang P, Kiens B, Richter EA, Parker BL. Phosphoproteomics of three exercise modalities identifies canonical signaling and C18ORF25 as an AMPK substrate regulating skeletal muscle function. Cell Metab 2022; 34:1561-1577.e9. [PMID: 35882232 DOI: 10.1016/j.cmet.2022.07.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 05/31/2022] [Accepted: 07/08/2022] [Indexed: 11/03/2022]
Abstract
Exercise induces signaling networks to improve muscle function and confer health benefits. To identify divergent and common signaling networks during and after different exercise modalities, we performed a phosphoproteomic analysis of human skeletal muscle from a cross-over intervention of endurance, sprint, and resistance exercise. This identified 5,486 phosphosites regulated during or after at least one type of exercise modality and only 420 core phosphosites common to all exercise. One of these core phosphosites was S67 on the uncharacterized protein C18ORF25, which we validated as an AMPK substrate. Mice lacking C18ORF25 have reduced skeletal muscle fiber size, exercise capacity, and muscle contractile function, and this was associated with reduced phosphorylation of contractile and Ca2+ handling proteins. Expression of C18ORF25 S66/67D phospho-mimetic reversed the decreased muscle force production. This work defines the divergent and canonical exercise phosphoproteome across different modalities and identifies C18ORF25 as a regulator of exercise signaling and muscle function.
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Affiliation(s)
- Ronnie Blazev
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia
| | - Christian S Carl
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, The University of Copenhagen, Copenhagen, Denmark
| | - Yaan-Kit Ng
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia
| | - Jeffrey Molendijk
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia
| | - Christian T Voldstedlund
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, The University of Copenhagen, Copenhagen, Denmark
| | - Yuanyuan Zhao
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia
| | - Di Xiao
- Children's Medical Research Institute, The University of Sydney, Camperdown, NSW, Australia; School of Mathematics and Statistics, The University of Sydney, Camperdown, NSW, Australia
| | - Andrew J Kueh
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Paula M Miotto
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia
| | - Vanessa R Haynes
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia
| | - Justin P Hardee
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia
| | - Jin D Chung
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia
| | - James W McNamara
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia; Murdoch Children's Research Institute and Melbourne Centre for Cardiovascular Genomics and Regenerative Medicine, The Royal Children's Hospital, Parkville, VIC, Australia
| | - Hongwei Qian
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia
| | - Paul Gregorevic
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia
| | | | - Marco J Herold
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Thomas E Jensen
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, The University of Copenhagen, Copenhagen, Denmark
| | - Leszek Lisowski
- Children's Medical Research Institute, The University of Sydney, Camperdown, NSW, Australia; Military Institute of Medicine, Warsaw, Poland
| | - Gordon S Lynch
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia
| | - Garron T Dodd
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia
| | - Matthew J Watt
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia
| | - Pengyi Yang
- Children's Medical Research Institute, The University of Sydney, Camperdown, NSW, Australia; The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Bente Kiens
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, The University of Copenhagen, Copenhagen, Denmark.
| | - Erik A Richter
- August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, The University of Copenhagen, Copenhagen, Denmark.
| | - Benjamin L Parker
- Department of Anatomy & Physiology, The University of Melbourne, Parkville, VIC, Australia; Centre for Muscle Research, The University of Melbourne, Parkville, VIC, Australia.
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Yamada AK, Pimentel GD, Pickering C, Cordeiro AV, Silva VR. Effect of caffeine on mitochondrial biogenesis in the skeletal muscle – A narrative review. Clin Nutr ESPEN 2022; 51:1-6. [DOI: 10.1016/j.clnesp.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/28/2022]
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Ghodsian N, Yeandle A, Hock BD, Gieseg SP. CD36 down regulation by the macrophage antioxidant 7,8-dihydroneopterin through modulation of PPAR-γ activity. Free Radic Res 2022; 56:366-377. [PMID: 36017639 DOI: 10.1080/10715762.2022.2114904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
CD36 is the key scavenger receptor driving the formation of cholesterol loaded foam cells, the principal cellular component of atherosclerotic plaques. CD36 is down regulated by 7,8-dihydroneopterin, a potent superoxide and hypochlorite scavenging antioxidant generated by interferon-γ stimulated macrophages. 7,8-dihydroneopterin down regulates CD36 mRNA and protein levels so inhibiting macrophage foam cell formation in vitro.We examined the mechanism of 7,8-dihydroneopterin down regulation of CD36 by measuring CD36 and PPAR-γ levels by western blot analysis, in the monocyte-like U937 cells with a range of PPAR-γ stimulants and inhibitors. Lipoxygenase activity was measured by monitoring linoleic acid oxidation at 234 nm for diene formation.Between 100 and 200 μM, 7,8-dihydroneopterin decreased CD36 levels by 50% within 12 hours with levels dropping below 25% by 24 hours. CD36 levels returned to basal levels after 24 hours. Inhibition of protein synthesis by cycloheximide show 7,8-dihydroneopterin had no effect on CD36 degradation rates. PPAR-γ levels were not altered by the addition of 7,8-dihydroneopterin. MAP Kinase, P38 and NF-κB pathways inhibitors SP600125, PD98059, SB202190 and BAY 11-7082 respectively, did not restore the CD36 levels in the presence of 7,8-dihydroneopterin. The addition the lipophilic PPAR-γ activators rosiglitazone and azelaoyl-PAF prevented the CD36 down regulation by 7,8-dihydroneopterin. 7,8-dihydroneopterin inhibited soybean lipoxygenase and reduced U937 cell basal levels of cellular lipid oxides as measured by HPLC-TBARS analysis.The data shows 7,8-dihydroneopterin down regulates CD36 expression by decreasing the level of lipid oxide stimulation of PPAR-γ promotor activity, potentially through lipoxygenase inhibition.
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Affiliation(s)
- Nooshin Ghodsian
- Free Radical Biochemistry, School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Anthony Yeandle
- Free Radical Biochemistry, School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Barry D Hock
- Haematology Research Group, Christchurch Hospital, New Zealand
| | - Steven P Gieseg
- Free Radical Biochemistry, School of Biological Sciences, University of Canterbury, Christchurch, New Zealand.,Department of Radiology, University of Otago Christchurch, New Zealand.,MARS Bioimaging Ltd., 29a Clyde Rd, Christchurch 8140, New Zealand
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Pileggi C, Hooks B, McPherson R, Dent R, Harper ME. Targeting skeletal muscle mitochondrial health in obesity. Clin Sci (Lond) 2022; 136:1081-1110. [PMID: 35892309 PMCID: PMC9334731 DOI: 10.1042/cs20210506] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/26/2022] [Accepted: 07/05/2022] [Indexed: 11/21/2022]
Abstract
Metabolic demands of skeletal muscle are substantial and are characterized normally as highly flexible and with a large dynamic range. Skeletal muscle composition (e.g., fiber type and mitochondrial content) and metabolism (e.g., capacity to switch between fatty acid and glucose substrates) are altered in obesity, with some changes proceeding and some following the development of the disease. Nonetheless, there are marked interindividual differences in skeletal muscle composition and metabolism in obesity, some of which have been associated with obesity risk and weight loss capacity. In this review, we discuss related molecular mechanisms and how current and novel treatment strategies may enhance weight loss capacity, particularly in diet-resistant obesity.
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Affiliation(s)
- Chantal A. Pileggi
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, Canada, K1H 8M5
- Ottawa Institute of Systems Biology, University of Ottawa, ON, Canada, K1H 8M5
| | - Breana G. Hooks
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, Canada, K1H 8M5
- Ottawa Institute of Systems Biology, University of Ottawa, ON, Canada, K1H 8M5
| | - Ruth McPherson
- Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Robert R.M. Dent
- Division of Endocrinology, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Mary-Ellen Harper
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, Canada, K1H 8M5
- Ottawa Institute of Systems Biology, University of Ottawa, ON, Canada, K1H 8M5
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Fu Y, Du M, Cao Z, He H. PGC-1α attenuates TNF-α-induced inflammatory responses in OCCM-30 cells. J Periodontal Res 2022; 57:1024-1033. [PMID: 35903958 DOI: 10.1111/jre.13042] [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: 01/23/2022] [Revised: 07/05/2022] [Accepted: 07/15/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND OBJECTIVES Peroxisome proliferator-activated receptor-γ coactivator (PGC)-1α, a master regulator of mitochondrial biogenesis and oxidative metabolism, has been associated with many inflammatory diseases. However, little is known about the function and mechanism of PGC-1α in cementoblasts under periodontitis. Our study aimed to investigate the effects of PGC-1α in immortalized cementoblast cell line OCCM-30 under TNF-α stimulation. MATERIALS AND METHODS OCCM-30 cells were cultured and exposed to TNF-α, and PGC-1α expression was assessed by Quantitative real-time polymerase chain reaction (qRT-PCR) and western blotting. Chemical inhibitors targeting various signaling pathways including NF-κB, p38 MAPK, Akt, and p53 were used to identify the regulatory mechanism involved. ZLN005 was used to upregulate PGC-1α and the subsequent alteration of inflammatory cytokines expression under TNF-α stimulation were examined by qRT-PCR and Elisa. PGC-1α siRNA was employed to further verify the role of PGC-1α in inflammatory response. Dual-reporter gene assays were performed to examine the transcriptional activity of p65, and the phosphorylation level of p65 was evaluated by western blotting. Immunofluorescence assays and nuclear and cytoplasmic extractions were performed to check the nuclear translocation of p65. Coimmunoprecipitation studies were also performed to check whether there is direct binding between p65 and PGC-1α. RESULTS TNF-α suppressed PGC-1α expression in OCCM-30 cells. Blocking p38 MAPK pathways restored the expression of PGC-1α. ZLN005 can upregulate PGC-1α in OCCM-30 cells. The upregulation of PGC-1α by ZLN005 inhibited TNF-α-induced proinflammatory cytokine expression, which was impaired by the transfection of PGC-1α siRNA. Knocking down PGC-1α also partially restored the ZLN005-decreased transcriptional activity of p65. However, the phosphorylation level and nuclear translocation of p65 were not significantly affected by PGC-1α. It was found that p65 was bound to PGC-1α in OCCM-30 cells stimulated by TNF-α, and the binding was increased upon ZLN005 treatment. CONCLUSIONS PGC-1α can attenuate TNF-α-induced inflammatory responses in OCCM-30 cells.
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Affiliation(s)
- Yihui Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Mingyuan Du
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Orthodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Zhengguo Cao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Periodontology, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Hong He
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Orthodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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Stocks B, Zierath JR. Post-translational Modifications: The Signals at the Intersection of Exercise, Glucose Uptake, and Insulin Sensitivity. Endocr Rev 2022; 43:654-677. [PMID: 34730177 PMCID: PMC9277643 DOI: 10.1210/endrev/bnab038] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Indexed: 11/19/2022]
Abstract
Diabetes is a global epidemic, of which type 2 diabetes makes up the majority of cases. Nonetheless, for some individuals, type 2 diabetes is eminently preventable and treatable via lifestyle interventions. Glucose uptake into skeletal muscle increases during and in recovery from exercise, with exercise effective at controlling glucose homeostasis in individuals with type 2 diabetes. Furthermore, acute and chronic exercise sensitizes skeletal muscle to insulin. A complex network of signals converge and interact to regulate glucose metabolism and insulin sensitivity in response to exercise. Numerous forms of post-translational modifications (eg, phosphorylation, ubiquitination, acetylation, ribosylation, and more) are regulated by exercise. Here we review the current state of the art of the role of post-translational modifications in transducing exercise-induced signals to modulate glucose uptake and insulin sensitivity within skeletal muscle. Furthermore, we consider emerging evidence for noncanonical signaling in the control of glucose homeostasis and the potential for regulation by exercise. While exercise is clearly an effective intervention to reduce glycemia and improve insulin sensitivity, the insulin- and exercise-sensitive signaling networks orchestrating this biology are not fully clarified. Elucidation of the complex proteome-wide interactions between post-translational modifications and the associated functional implications will identify mechanisms by which exercise regulates glucose homeostasis and insulin sensitivity. In doing so, this knowledge should illuminate novel therapeutic targets to enhance insulin sensitivity for the clinical management of type 2 diabetes.
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Affiliation(s)
- Ben Stocks
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | - Juleen R Zierath
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark.,Departments of Molecular Medicine and Surgery and Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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Insulin and Its Key Role for Mitochondrial Function/Dysfunction and Quality Control: A Shared Link between Dysmetabolism and Neurodegeneration. BIOLOGY 2022; 11:biology11060943. [PMID: 35741464 PMCID: PMC9220302 DOI: 10.3390/biology11060943] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/01/2022] [Accepted: 06/17/2022] [Indexed: 02/07/2023]
Abstract
Insulin was discovered and isolated from the beta cells of pancreatic islets of dogs and is associated with the regulation of peripheral glucose homeostasis. Insulin produced in the brain is related to synaptic plasticity and memory. Defective insulin signaling plays a role in brain dysfunction, such as neurodegenerative disease. Growing evidence suggests a link between metabolic disorders, such as diabetes and obesity, and neurodegenerative diseases, especially Alzheimer's disease (AD). This association is due to a common state of insulin resistance (IR) and mitochondrial dysfunction. This review takes a journey into the past to summarize what was known about the physiological and pathological role of insulin in peripheral tissues and the brain. Then, it will land in the present to analyze the insulin role on mitochondrial health and the effects on insulin resistance and neurodegenerative diseases that are IR-dependent. Specifically, we will focus our attention on the quality control of mitochondria (MQC), such as mitochondrial dynamics, mitochondrial biogenesis, and selective autophagy (mitophagy), in healthy and altered cases. Finally, this review will be projected toward the future by examining the most promising treatments that target the mitochondria to cure neurodegenerative diseases associated with metabolic disorders.
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Metabolic Impact of MKP-2 Upregulation in Obesity Promotes Insulin Resistance and Fatty Liver Disease. Nutrients 2022; 14:nu14122475. [PMID: 35745205 PMCID: PMC9228271 DOI: 10.3390/nu14122475] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/08/2022] [Accepted: 06/13/2022] [Indexed: 11/23/2022] Open
Abstract
The mechanisms connecting obesity with type 2 diabetes, insulin resistance, nonalcoholic fatty liver disease, and cardiovascular diseases remain incompletely understood. The function of MAPK phosphatase-2 (MKP-2), a type 1 dual-specific phosphatase (DUSP) in whole-body metabolism, and how this contributes to the development of diet-induced obesity, type 2 diabetes (T2D), and insulin resistance is largely unknown. We investigated the physiological contribution of MKP-2 in whole-body metabolism and whether MKP-2 is altered in obesity and human fatty liver disease using MKP-2 knockout mice models and human liver tissue derived from fatty liver disease patients. We demonstrate that, for the first time, MKP-2 expression was upregulated in liver tissue in humans with obesity and fatty liver disease and in insulin-responsive tissues in mice with obesity. MKP-2-deficient mice have enhanced p38 MAPK, JNK, and ERK activities in insulin-responsive tissues compared with wild-type mice. MKP-2 deficiency in mice protects against diet-induced obesity and hepatic steatosis and was accompanied by improved glucose homeostasis and insulin sensitivity. Mkp-2−/− mice are resistant to diet-induced obesity owing to reduced food intake and associated lower respiratory exchange ratio. This was associated with enhanced circulating insulin-like growth factor-1 (IGF-1) and stromal cell-derived factor 1 (SDF-1) levels in Mkp-2−/− mice. PTEN, a negative regulator of Akt, was downregulated in livers of Mkp-2−/− mice, resulting in enhanced Akt activity consistent with increased insulin sensitivity. These studies identify a novel role for MKP-2 in the regulation of systemic metabolism and pathophysiology of obesity-induced insulin resistance and fatty liver disease.
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Thambamroong T, Seetalarom K, Saichaemchan S, Pumsutas Y, Prasongsook N. Efficacy of Curcumin on Treating Cancer Anorexia-Cachexia Syndrome in Locally or Advanced Head and Neck Cancer: A Double-Blind, Placebo-Controlled Randomised Phase IIa Trial (CurChexia). J Nutr Metab 2022; 2022:5425619. [PMID: 35694030 PMCID: PMC9184232 DOI: 10.1155/2022/5425619] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 05/08/2022] [Accepted: 05/19/2022] [Indexed: 12/15/2022] Open
Abstract
Background Cancer anorexia-cachexia syndrome (CAS) is a significant comorbidity among all patients with cancer, increasing the mortality rate. Almost all patients with head and neck cancer experience this syndrome. CAS causes increased energy expenditure by increasing systemic inflammation and decreasing energy consumption due to anorexia. It leads to skeleton muscle breakdown and reduces the quality of life. Nutritional interventions and primary cancer treatment are the mainstays to manage this situation. However, a vicious cycle causes CAS to persist, especially in head and neck cancer, where tumour location and its treatment interfere with nutritional interventions. Curcumin shows anti-inflammatory effects, including modulated CAS in animal and in vitro studies. Objective The study aimed to determine the effect of curcumin to treat cancer anorexia-cachexia syndrome among current patients with locally advanced or advanced head and neck cancer. Methods This constitutes a randomised, double-blind, placebo-controlled phase IIa study. Twenty patients with CAS in locally advanced or advanced head and neck cancer adequately nourished via a feeding tube were enrolled and randomised in a 1 : 1 ratio to receive oral curcumin (at a dose of 4000 mg daily) (n = 10) or placebo (n = 10) for 8 weeks. The primary endpoint was body composition (muscle mass, body fat mass, and basal metabolic rate). The secondary endpoints were handgrip muscle strength, body mass index, absolute lymphocyte count, and safety and toxicity. Result There was a statistically significant benefit from curcumin on improving muscle mass compared with placebo (2.16% [95% confidence interval; CI, -0.75 to 5.07] vs. -3.82% [95% CI, -8.2 to 0.57]; P=0.019). The other parameters of body composition were not significant but tended to favour curcumin benefit. The body fat mass (-0.51 [95% CI, -21.89 to 20.86] vs. -8.97% [95% CI, -19.43 to 1.49]; P=0.432) and percentage of mean change in the basal metabolic rate were noted (BMR) (0.54% [95% CI, -1.6 to 2.67] vs. -1.61% [95% CI, -4.05 to 0.84]; P=0.153). Notably, patients treated with curcumin exhibited less reduction in handgrip muscle strength and absolute lymphocyte count but was not significant. Similarly, most adverse events were grade 1 in both groups. Conclusion The curcumin add-on resulted in a significant increase in muscle mass than standard nutritional support. Furthermore, it may improve and delay a decrease in the other body composition parameters, handgrip strength, and absolute lymphocyte count. Curcumin was safe and well tolerated. This constitutes an unmet need for clinical trials. This trial is registered with NCT04208334.
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Affiliation(s)
- Tawasapon Thambamroong
- Division of Medical Oncology, Department of Medicine, Phramongkutklao Hospital and College of Medicine, Bangkok, Thailand
| | - Kasan Seetalarom
- Division of Medical Oncology, Department of Medicine, Phramongkutklao Hospital and College of Medicine, Bangkok, Thailand
| | - Siriwimon Saichaemchan
- Division of Medical Oncology, Department of Medicine, Phramongkutklao Hospital and College of Medicine, Bangkok, Thailand
| | - Yanisa Pumsutas
- Division of Clinical Nutrition, Department of Medicine, Phramongkutklao Hospital and College of Medicine, Bangkok, Thailand
| | - Naiyarat Prasongsook
- Division of Medical Oncology, Department of Medicine, Phramongkutklao Hospital and College of Medicine, Bangkok, Thailand
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Zhang J, Lu L, Tian X, Wang K, Xie G, Li H, Wen C, Hu C. Lipidomics Revealed Aberrant Lipid Metabolism Caused by Inflammation in Cardiac Tissue in the Early Stage of Systemic Lupus Erythematosus in a Murine Model. Metabolites 2022; 12:metabo12050415. [PMID: 35629919 PMCID: PMC9146605 DOI: 10.3390/metabo12050415] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/29/2022] [Accepted: 05/03/2022] [Indexed: 02/04/2023] Open
Abstract
Cardiac involvement, displayed as premature cardiovascular disease (CVD), is one of common clinical symptoms of patients with systemic lupus erythematosus (SLE), contributing to mortality of the disease. The precise underlying pathological mechanism(s) for the cardiac involvement in lupus remains poorly understood. Lipids and their metabolites are directly involved in atherosclerosis development, oxidative stress, and inflammation, which are closely related to the development of CVD. In the study, shotgun lipidomics was exploited to quantitatively analyze cellular lipidomes in the cardiac tissue of MRL/lpr mice at two different time points (i.e., pre-lupus and lupus state) with/without treatment with glucocorticoids (GCs). Urine protein, spleen index, and renal histopathological evaluation of the mice were also performed for assessment of SLE onset and/or outcome. Lipidomics analysis revealed that the deposition of cholesterol and the aberrant metabolism of lipids caused by the increased energy metabolism and the enhanced activation of phospholipases, both of which were originally induced by inflammation, were already present in cardiac tissues from lupus-prone mice even at pre-lupus state. These lipid alterations could further induce inflammation and autoimmune responses, accelerating the process of CVD. In addition, the present study also demonstrated that GCs therapy could not only delay the progression of SLE, but also partially corrected these alterations of lipid species in cardiac tissue due to their anti-inflammatory effect. Thus, the medications with better anti-inflammatory effect might be a useful therapeutic method for premature CVD of SLE.
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Affiliation(s)
- Jida Zhang
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, 548 Bingwen Road, Hangzhou 310053, China; (J.Z.); (X.T.); (K.W.); (G.X.); (H.L.)
| | - Lu Lu
- Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Bingwen Road, Hangzhou 310053, China;
| | - Xiaoyu Tian
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, 548 Bingwen Road, Hangzhou 310053, China; (J.Z.); (X.T.); (K.W.); (G.X.); (H.L.)
| | - Kaili Wang
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, 548 Bingwen Road, Hangzhou 310053, China; (J.Z.); (X.T.); (K.W.); (G.X.); (H.L.)
| | - Guanqun Xie
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, 548 Bingwen Road, Hangzhou 310053, China; (J.Z.); (X.T.); (K.W.); (G.X.); (H.L.)
| | - Haichang Li
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, 548 Bingwen Road, Hangzhou 310053, China; (J.Z.); (X.T.); (K.W.); (G.X.); (H.L.)
| | - Chengping Wen
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, 548 Bingwen Road, Hangzhou 310053, China; (J.Z.); (X.T.); (K.W.); (G.X.); (H.L.)
- Correspondence: (C.W.); (C.H.)
| | - Changfeng Hu
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, 548 Bingwen Road, Hangzhou 310053, China; (J.Z.); (X.T.); (K.W.); (G.X.); (H.L.)
- Correspondence: (C.W.); (C.H.)
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p38 MAPK priming boosts VSMC proliferation and arteriogenesis by promoting PGC1α-dependent mitochondrial dynamics. Sci Rep 2022; 12:5938. [PMID: 35396524 PMCID: PMC8994030 DOI: 10.1038/s41598-022-09757-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 03/28/2022] [Indexed: 12/05/2022] Open
Abstract
Vascular smooth muscle cell (VSMC) proliferation is essential for arteriogenesis to restore blood flow after artery occlusion, but the mechanisms underlying this response remain unclear. Based on our previous findings showing increased VSMC proliferation in the neonatal aorta of mice lacking the protease MT4-MMP, we aimed at discovering new players in this process. We demonstrate that MT4-MMP absence boosted VSMC proliferation in vitro in response to PDGF-BB in a cell-autonomous manner through enhanced p38 MAPK activity. Increased phospho-p38 in basal MT4-MMP-null VSMCs augmented the rate of mitochondrial degradation by promoting mitochondrial morphological changes through the co-activator PGC1α as demonstrated in PGC1α−/− VSMCs. We tested the in vivo implications of this pathway in a novel conditional mouse line for selective MT4-MMP deletion in VSMCs and in mice pre-treated with the p38 MAPK activator anisomycin. Priming of p38 MAPK activity in vivo by the absence of the protease MT4-MMP or by anisomycin treatment led to enhanced arteriogenesis and improved flow recovery after femoral artery occlusion. These findings may open new therapeutic opportunities for peripheral vascular diseases.
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Monosodium urate crystals regulate a unique JNK-dependent macrophage metabolic and inflammatory response. Cell Rep 2022; 38:110489. [PMID: 35263587 DOI: 10.1016/j.celrep.2022.110489] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 12/20/2021] [Accepted: 02/14/2022] [Indexed: 12/21/2022] Open
Abstract
Monosodium urate crystals (MSUc) induce inflammation in vivo without prior priming, raising the possibility of an initial cell-autonomous phase. Here, using genome-wide transcriptomic analysis and biochemical assays, we demonstrate that MSUc alone induce a metabolic-inflammatory transcriptional program in non-primed human and murine macrophages that is markedly distinct to that induced by LPS. Genes uniquely upregulated in response to MSUc belong to lipid and amino acid metabolism, glycolysis, and SLC transporters. This upregulation leads to a metabolic rewiring in sera from individuals and mice with acute gouty arthritis. Mechanistically, the initiating inflammatory-metabolic changes in acute gout flares are regulated through a persistent expression and increased binding of JUN to the promoter of target genes through JNK signaling-but not P38-in a process that is different than after LPS stimulation and independent of inflammasome activation. Finally, pharmacological JNK inhibition limits MSUc-induced inflammation in animal models of acute gouty inflammation.
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Chen DS, Yan J, Yang PZ. Cardiomyocyte Atrophy, an Underestimated Contributor in Doxorubicin-Induced Cardiotoxicity. Front Cardiovasc Med 2022; 9:812578. [PMID: 35282350 PMCID: PMC8913904 DOI: 10.3389/fcvm.2022.812578] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/11/2022] [Indexed: 12/21/2022] Open
Abstract
Left ventricular (LV) mass loss is prevalent in doxorubicin (DOX)-induced cardiotoxicity and is responsible for the progressive decline of cardiac function. Comparing with the well-studied role of cell death, the part of cardiomyocyte atrophy (CMA) playing in the LV mass loss is underestimated and the knowledge of the underlying mechanism is still limited. In this review, we summarized the recent advances in the DOX-induced CMA. We found that the CMA caused by DOX is associated with the upregulation of FOXOs and “atrogenes,” the activation of transient receptor potential canonical 3-NADPH oxidase 2 (TRPC3-Nox2) axis, and the suppression of IGF-1-PI3K signaling pathway. The imbalance of anabolic and catabolic process may be the common final pathway of these mechanisms. At last, we provided some strategies that have been demonstrated to alleviate the DOX-induced CMA in animal models.
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Affiliation(s)
- De-Shu Chen
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, China
| | - Jing Yan
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, China
- Jing Yan
| | - Ping-Zhen Yang
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Heart Center of Zhujiang Hospital, Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Disease, Guangzhou, China
- Heart Center of Zhujiang Hospital, Sino-Japanese Cooperation Platform for Translational Research in Heart Failure, Guangzhou, China
- *Correspondence: Ping-Zhen Yang
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