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Dey P, Rajalaxmi S, Saha P, Thakur PS, Hashmi MA, Lal H, Saini N, Singh N, Ramanathan A. Cold-shock proteome of myoblasts reveals role of RBM3 in promotion of mitochondrial metabolism and myoblast differentiation. Commun Biol 2024; 7:515. [PMID: 38688991 PMCID: PMC11061143 DOI: 10.1038/s42003-024-06196-4] [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: 06/21/2023] [Accepted: 04/15/2024] [Indexed: 05/02/2024] Open
Abstract
Adaptation to hypothermia is important for skeletal muscle cells under physiological stress and is used for therapeutic hypothermia (mild hypothermia at 32 °C). We show that hypothermic preconditioning at 32 °C for 72 hours improves the differentiation of skeletal muscle myoblasts using both C2C12 and primary myoblasts isolated from 3 month and 18-month-old mice. We analyzed the cold-shock proteome of myoblasts exposed to hypothermia (32 °C for 6 and 48 h) and identified significant changes in pathways related to RNA processing and central carbon, fatty acid, and redox metabolism. The analysis revealed that levels of the cold-shock protein RBM3, an RNA-binding protein, increases with both acute and chronic exposure to hypothermic stress, and is necessary for the enhanced differentiation and maintenance of mitochondrial metabolism. We also show that overexpression of RBM3 at 37 °C is sufficient to promote mitochondrial metabolism, cellular proliferation, and differentiation of C2C12 and primary myoblasts. Proteomic analysis of C2C12 myoblasts overexpressing RBM3 show significant enrichment of pathways involved in fatty acid metabolism, RNA metabolism and the electron transport chain. Overall, we show that the cold-shock protein RBM3 is a critical factor that can be used for controlling the metabolic network of myoblasts.
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Affiliation(s)
- Paulami Dey
- Institute for Stem Cell Science and Regenerative Medicine (inStem), GKVK-Post, Bellary Rd, Bengaluru, 560065, Karnataka, India
- SASTRA Deemed University, Tirumalaisamudram, Thanjavur, 613401, Tamil Nadu, India
| | - Srujanika Rajalaxmi
- Institute for Stem Cell Science and Regenerative Medicine (inStem), GKVK-Post, Bellary Rd, Bengaluru, 560065, Karnataka, India
| | - Pushpita Saha
- Institute for Stem Cell Science and Regenerative Medicine (inStem), GKVK-Post, Bellary Rd, Bengaluru, 560065, Karnataka, India
| | - Purvi Singh Thakur
- Institute for Stem Cell Science and Regenerative Medicine (inStem), GKVK-Post, Bellary Rd, Bengaluru, 560065, Karnataka, India
| | - Maroof Athar Hashmi
- Institute for Stem Cell Science and Regenerative Medicine (inStem), GKVK-Post, Bellary Rd, Bengaluru, 560065, Karnataka, India
- Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Heera Lal
- Institute for Stem Cell Science and Regenerative Medicine (inStem), GKVK-Post, Bellary Rd, Bengaluru, 560065, Karnataka, India
- Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Nistha Saini
- Institute for Stem Cell Science and Regenerative Medicine (inStem), GKVK-Post, Bellary Rd, Bengaluru, 560065, Karnataka, India
| | - Nirpendra Singh
- Institute for Stem Cell Science and Regenerative Medicine (inStem), GKVK-Post, Bellary Rd, Bengaluru, 560065, Karnataka, India
| | - Arvind Ramanathan
- Institute for Stem Cell Science and Regenerative Medicine (inStem), GKVK-Post, Bellary Rd, Bengaluru, 560065, Karnataka, India.
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2
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Kaesler N, Cheng M, Nagai J, O’Sullivan J, Peisker F, Bindels EM, Babler A, Moellmann J, Droste P, Franciosa G, Dugourd A, Saez-Rodriguez J, Neuss S, Lehrke M, Boor P, Goettsch C, Olsen JV, Speer T, Lu TS, Lim K, Floege J, Denby L, Costa I, Kramann R. Mapping cardiac remodeling in chronic kidney disease. SCIENCE ADVANCES 2023; 9:eadj4846. [PMID: 38000021 PMCID: PMC10672229 DOI: 10.1126/sciadv.adj4846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023]
Abstract
Patients with advanced chronic kidney disease (CKD) mostly die from sudden cardiac death and recurrent heart failure. The mechanisms of cardiac remodeling are largely unclear. To dissect molecular and cellular mechanisms of cardiac remodeling in CKD in an unbiased fashion, we performed left ventricular single-nuclear RNA sequencing in two mouse models of CKD. Our data showed a hypertrophic response trajectory of cardiomyocytes with stress signaling and metabolic changes driven by soluble uremia-related factors. We mapped fibroblast to myofibroblast differentiation in this process and identified notable changes in the cardiac vasculature, suggesting inflammation and dysfunction. An integrated analysis of cardiac cellular responses to uremic toxins pointed toward endothelin-1 and methylglyoxal being involved in capillary dysfunction and TNFα driving cardiomyocyte hypertrophy in CKD, which was validated in vitro and in vivo. TNFα inhibition in vivo ameliorated the cardiac phenotype in CKD. Thus, interventional approaches directed against uremic toxins, such as TNFα, hold promise to ameliorate cardiac remodeling in CKD.
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Affiliation(s)
- Nadine Kaesler
- Clinic for Renal and Hypertensive Disorders, Rheumatological and Immunological Disease, University Hospital of the RWTH Aachen, Aachen, Germany
- Institute of Experimental Medicine and Systems Biology, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Mingbo Cheng
- Institute for Computational Genomics, University Hospital of the RWTH Aachen, Aachen, Germany
| | - James Nagai
- Institute for Computational Genomics, University Hospital of the RWTH Aachen, Aachen, Germany
| | - James O’Sullivan
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - Fabian Peisker
- Institute of Experimental Medicine and Systems Biology, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Eric M. J. Bindels
- Department of Hematology, Erasmus Medical Center, Rotterdam, Netherlands
| | - Anne Babler
- Institute of Experimental Medicine and Systems Biology, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Julia Moellmann
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Patrick Droste
- Clinic for Renal and Hypertensive Disorders, Rheumatological and Immunological Disease, University Hospital of the RWTH Aachen, Aachen, Germany
- Institute of Pathology, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Giulia Franciosa
- Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | - Aurelien Dugourd
- Heidelberg University, Faculty of Medicine, and Heidelberg University Hospital, Institute for Computational Biomedicine, Bioquant, Heidelberg, Germany
| | - Julio Saez-Rodriguez
- Heidelberg University, Faculty of Medicine, and Heidelberg University Hospital, Institute for Computational Biomedicine, Bioquant, Heidelberg, Germany
| | - Sabine Neuss
- Institute of Pathology, University Hospital of the RWTH Aachen, Aachen, Germany
- Helmholtz Institute for Biomedical Engineering, Biointerface Laboratory, RWTH Aachen University, Aachen, Germany
| | - Michael Lehrke
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Peter Boor
- Clinic for Renal and Hypertensive Disorders, Rheumatological and Immunological Disease, University Hospital of the RWTH Aachen, Aachen, Germany
- Institute of Pathology, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Claudia Goettsch
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Jesper V. Olsen
- Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | - Thimoteus Speer
- Department of Medicine (Nephrology), Goethe University Frankfurt, Frankfurt, Germany
| | - Tzong-Shi Lu
- Brigham and Women’s Hospital, Renal Division, Boston, MA, USA
| | - Kenneth Lim
- Division of Nephrology and Hypertension, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Jürgen Floege
- Clinic for Renal and Hypertensive Disorders, Rheumatological and Immunological Disease, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Laura Denby
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - Ivan Costa
- Institute for Computational Genomics, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Rafael Kramann
- Clinic for Renal and Hypertensive Disorders, Rheumatological and Immunological Disease, University Hospital of the RWTH Aachen, Aachen, Germany
- Institute of Experimental Medicine and Systems Biology, University Hospital of the RWTH Aachen, Aachen, Germany
- Department of Internal Medicine, Nephrology and Transplantation, Erasmus Medical Center, Rotterdam, Netherlands
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3
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Hettinger ZR, Confides AL, Vanderklish PW, Dupont‐Versteegden EE. The transcript interactome of skeletal muscle RNA binding protein motif 3 (RBM3). Physiol Rep 2023; 11:e15596. [PMID: 36750123 PMCID: PMC9904958 DOI: 10.14814/phy2.15596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 02/09/2023] Open
Abstract
Post-transcriptional regulation of gene expression represents a critical regulatory step in the production of a functional proteome. Elevated expression of post-transcriptional regulator RNA binding motif protein 3 (RBM3), an RNA binding protein in the cold-shock family, is positively correlated with skeletal muscle growth in adult mice. However, mechanisms through which RBM3 exerts its effects are largely unknown. The purpose of this study was to perform RNA immunoprecipitation followed by RNA sequencing (RIP-seq) and apply a network science approach to understand biological processes (BPs) most associated with RBM3-bound mRNAs. In addition, through nucleotide-sequence-scanning of enriched transcripts, we predicted the motif for skeletal muscle RBM3 binding. Gene set enrichment analysis followed by enrichment mapping of RBM3-bound transcripts (fold change >3; p.adj <0.01) revealed significant enrichment of BPs associated with "Contractile apparatus," "Translation initiation," and "Proteosome complex." Clusters were driven largely by enrichment of Myh1 (FC: 4.43), Eif4b (FC: 5.03), and Trim63 (FC: 5.84), respectively. Motif scanning of enriched sequences revealed a discrete 14 nucleotide-wide motif found most prominently at the junction between the protein coding region's termination sequence and the start of the 3' untranslated region (UTR; E-Value: 1.1 e-015 ). Proof of concept investigation of motif location along enriched transcripts Myh1 and Myl4 revealed 3' UTR binding, suggesting RBM3 involvement in transcript half-life regulation. Together, these results demonstrate the potential influence of RBM3 in reshaping the skeletal muscle proteome through post-transcriptional regulation of mRNAs crucial to muscle adaptations.
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Affiliation(s)
- Zachary R. Hettinger
- Department of Physical Therapy, College of Health SciencesUniversity of KentuckyLexingtonKentuckyUSA
- Center for Muscle BiologyUniversity of KentuckyLexingtonKentuckyUSA
- Present address:
Department of Physical Medicine & RehabilitationHarvard Medical SchoolBostonMassachusettsUSA
| | - Amy L. Confides
- Department of Physical Therapy, College of Health SciencesUniversity of KentuckyLexingtonKentuckyUSA
- Center for Muscle BiologyUniversity of KentuckyLexingtonKentuckyUSA
| | | | - Esther E. Dupont‐Versteegden
- Department of Physical Therapy, College of Health SciencesUniversity of KentuckyLexingtonKentuckyUSA
- Center for Muscle BiologyUniversity of KentuckyLexingtonKentuckyUSA
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Drew KL, Bhowmick S, Laughlin BW, Goropashnaya AV, Tøien Ø, Sugiura MH, Wong A, Pourrezaei K, Barati Z, Chen CY. Opportunities and barriers to translating the hibernation phenotype for neurocritical care. Front Neurol 2023; 14:1009718. [PMID: 36779060 PMCID: PMC9911456 DOI: 10.3389/fneur.2023.1009718] [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: 08/02/2022] [Accepted: 01/11/2023] [Indexed: 01/28/2023] Open
Abstract
Targeted temperature management (TTM) is standard of care for neonatal hypoxic ischemic encephalopathy (HIE). Prevention of fever, not excluding cooling core body temperature to 33°C, is standard of care for brain injury post cardiac arrest. Although TTM is beneficial, HIE and cardiac arrest still carry significant risk of death and severe disability. Mammalian hibernation is a gold standard of neuroprotective metabolic suppression, that if better understood might make TTM more accessible, improve efficacy of TTM and identify adjunctive therapies to protect and regenerate neurons after hypoxic ischemia brain injury. Hibernating species tolerate cerebral ischemia/reperfusion better than humans and better than other models of cerebral ischemia tolerance. Such tolerance limits risk of transitions into and out of hibernation torpor and suggests that a barrier to translate hibernation torpor may be human vulnerability to these transitions. At the same time, understanding how hibernating mammals protect their brains is an opportunity to identify adjunctive therapies for TTM. Here we summarize what is known about the hemodynamics of hibernation and how the hibernating brain resists injury to identify opportunities to translate these mechanisms for neurocritical care.
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Affiliation(s)
- Kelly L. Drew
- Center for Transformative Research in Metabolism, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States
| | - Saurav Bhowmick
- Center for Transformative Research in Metabolism, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States
| | - Bernard W. Laughlin
- Center for Transformative Research in Metabolism, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States
| | - Anna V. Goropashnaya
- Center for Transformative Research in Metabolism, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States
| | - Øivind Tøien
- Center for Transformative Research in Metabolism, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States
| | - M. Hoshi Sugiura
- Center for Transformative Research in Metabolism, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States
| | - Ardy Wong
- Drexel University School of Biomedical Engineering, Science and Health Systems, Philadelphia, PA, United States
| | - Kambiz Pourrezaei
- Drexel University School of Biomedical Engineering, Science and Health Systems, Philadelphia, PA, United States
| | - Zeinab Barati
- Center for Transformative Research in Metabolism, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States
- Barati Medical LLC, Fairbanks, AK, United States
| | - Chao-Yin Chen
- Department of Pharmacology, University of California, Davis, Davis, CA, United States
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5
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Zhang M, Chen M, Li Y, Rao M, Wang D, Wang Z, Zhang L, Yin P, Tang P. Delayed denervation-induced muscle atrophy in Opg knockout mice. Front Physiol 2023; 14:1127474. [PMID: 36909232 PMCID: PMC9992212 DOI: 10.3389/fphys.2023.1127474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/13/2023] [Indexed: 02/24/2023] Open
Abstract
Recent evidence has shown a crucial role for the osteoprotegerin/receptor activator of nuclear factor κ-B ligand/RANK (OPG/RANKL/RANK) signaling axis not only in bone but also in muscle tissue; however, there is still a lack of understanding of its effects on muscle atrophy. Here, we found that denervated Opg knockout mice displayed better functional recovery and delayed muscle atrophy, especially in a specific type IIB fiber. Moreover, OPG deficiency promoted milder activation of the ubiquitin-proteasome pathway, which further verified the protective role of Opg knockout in denervated muscle damage. Furthermore, transcriptome sequencing indicated that Opg knockout upregulated the expression of Inpp5k, Rbm3, and Tet2 and downregulated that of Deptor in denervated muscle. In vitro experiments revealed that satellite cells derived from Opg knockout mice displayed a better differentiation ability than those acquired from wild-type littermates. Higher expression levels of Tet2 were also observed in satellite cells derived from Opg knockout mice, which provided a possible mechanistic basis for the protective effects of Opg knockout on muscle atrophy. Taken together, our findings uncover the novel role of Opg in muscle atrophy process and extend the current understanding in the OPG/RANKL/RANK signaling axis.
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Affiliation(s)
- Mingming Zhang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Ming Chen
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Yi Li
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Man Rao
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Duanyang Wang
- Department of Orthopedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Zhongqi Wang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Licheng Zhang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Pengbin Yin
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Peifu Tang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
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6
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Wan Y, Tian H, Wang H, Wang D, Jiang H, Fang Q. Selective intraarterial hypothermia combined with mechanical thrombectomy for acute cerebral infarction based on microcatheter technology: A single-center, randomized, single-blind controlled study. Front Neurol 2023; 14:1039816. [PMID: 36873429 PMCID: PMC9978520 DOI: 10.3389/fneur.2023.1039816] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 01/27/2023] [Indexed: 02/18/2023] Open
Abstract
Objective To investigate the safety and efficacy of selective intraarterial hypothermia combined with mechanical thrombectomy in the treatment of acute cerebral infarction based on microcatheter technology. Methods A total of 142 patients with anterior circulation large vessel occlusion were randomly assigned to the hypothermic treatment group (test group) and the conventional treatment group (control group). National Institutes of Health Stroke Scale (NIHSS) scores, postoperative infarct volume, the 90-day good prognosis rate (modified Rankin Scale (mRS) score ≤ 2 points), and the mortality rate of the two groups were compared and analyzed. Blood specimens were collected from patients before and after treatment. Serum levels of superoxide dismutase (SOD), malondialdehyde (MDA), interleukin-6 (IL-6), IL-10, and RNA-binding motif protein 3 (RBM3) were measured. Results The 7-day postoperative cerebral infarct volume [(63.7 ± 22.1) ml vs. (88.5 ± 20.8) ml] and NIHSS scores at postoperative Days 1, 7, and 14 [(6.8 ± 3.8) points vs. (8.2 ± 3.5) points; (2.6 ± 1.6) points vs. (4.0 ± 1.8) points; (2.0 ± 1.2) points vs. (3.5 ± 2.1) points] in the test group were significantly lower than those in the control group. The good prognosis rate at 90 days postoperatively (54.9 vs. 35.2%, P = 0.018) was significantly higher in the test group than in the control group. The 90-day mortality rate was not statistically significant (7.0 vs. 8.5%, P = 0.754). Immediately after surgery and 1 day after surgery, SOD, IL-10, and RBM3 levels in the test group were relatively higher than those in the control group, and the differences were statistically significant. Immediately after surgery and 1 day after surgery, MDA and IL-6 levels in the test group were relatively reduced compared with those in the control group, and the differences were statistically significant (P < 0.05). In the test group, RBM3 was positively correlated with SOD and IL-10. Conclusion Mechanical thrombectomy combined with intraarterial cold saline perfusion is a safe and effective measure for the treatment of acute cerebral infarction. Postoperative NIHSS scores and infarct volumes were significantly improved with this strategy compared with simple mechanical thrombectomy, and the 90-day good prognosis rate was improved. The mechanism by which this treatment exerts its cerebral protective effect may be by inhibiting the transformation of the ischaemic penumbra of the infarct core area, scavenging some oxygen free radicals, reducing inflammatory injury to cells after acute infarction and ischaemia-reperfusion, and promoting RBM3 production in cells.
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Affiliation(s)
- Yue Wan
- Department of Neurology, The First Affiliated Hospital of Suzhou University, Suzhou, Liaoning, China.,Department of Neurology, Hubei Provincial Third People's Hospital, Zhongshan Hospital, Wuhan, Hubei, China
| | - Hao Tian
- Department of Neurology, Hubei Provincial Third People's Hospital, Zhongshan Hospital, Wuhan, Hubei, China
| | - Hui Wang
- Department of Neurology, The First Affiliated Hospital of Suzhou University, Suzhou, Liaoning, China
| | - DaPeng Wang
- Department of Neurology, The First Affiliated Hospital of Suzhou University, Suzhou, Liaoning, China
| | - HaiWei Jiang
- Department of Neurology, Hubei Provincial Third People's Hospital, Zhongshan Hospital, Wuhan, Hubei, China
| | - Qi Fang
- Department of Neurology, The First Affiliated Hospital of Suzhou University, Suzhou, Liaoning, China
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Liu Y, Shi H, Hu Y, Yao R, Liu P, Yang Y, Li S. RNA binding motif protein 3 (RBM3) promotes protein kinase B (AKT) activation to enhance glucose metabolism and reduce apoptosis in skeletal muscle of mice under acute cold exposure. Cell Stress Chaperones 2022; 27:603-618. [PMID: 36149580 PMCID: PMC9672220 DOI: 10.1007/s12192-022-01297-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/01/2022] [Accepted: 09/09/2022] [Indexed: 01/25/2023] Open
Abstract
The main danger of cold stress to animals in cold regions is systemic metabolic changes and protein synthesis inhibition. RBM3, an exceptional cold shock protein, is rapidly upregulated in response to hypothermia to resist the adverse effects of cold stress. However, the mechanism of the protective effect and the rapid upregulation of RBM3 remains unclear. O-GlcNAcylation, an atypical O-glycosylation, is precisely regulated only by O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA) and participates in the signal transduction of multiple cellular stress responses as a "stress and nutrition receptor." Therefore, our study aimed to explore the mechanism of RBM3 regulating glucose metabolism and promoting survival in skeletal muscle under acute cold exposure. Meanwhile, our study verifies whether O-GlcNAcylation mediated by OGT rapidly upregulates RBM3. The blood and skeletal muscle of mice were collected at the end of cold exposure treatment for 0, 2, and 4 h. Changes in levels of RBM3, AKT, glycolysis apoptosis, and OGT were measured. The results show that acute cold exposure upregulated RBM3, OGT, and AKT phosphorylation and increased energy consumption, which enhanced glycolysis and prevent apoptosis. In the 32 °C mild hypothermia model in vitro, overexpression of RBM3 enhanced AKT phosphorylation. Meanwhile, inactivation of AKT by wortmannin resulted in increased apoptosis and decreased glucose metabolism in skeletal muscle under acute cold exposure. In addition, OGT-mediated O-GlcNAcylation of p65 was confirmed in mouse myoblast cell line (C2C12) cells at mild hypothermia. O-GlcNAcylation level affected p65 activity and nuclear translocation. Compared with wild type (WT) mice, RBM3 and p65 phosphorylation were decreased in specific skeletal muscle Ogt (KO) mice, whereas AKT phosphorylation, glycolysis, and apoptosis were increased. Taken together, O-GlcNAcylation of p65 upregulates RBM3 to promote AKT phosphorylation, enhance glucose metabolism, and reduce apoptosis in skeletal muscle of mice under acute cold exposure.
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Affiliation(s)
- Yang Liu
- National Experimental Teaching Demonstration Center of Animal Medicine Foundation, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, People's Republic of China
| | - Hongzhao Shi
- Department of Animal Engineering, Yangling Vocational & Technical College, Xianyang, 712199, People's Republic of China
| | - Yajie Hu
- National Experimental Teaching Demonstration Center of Animal Medicine Foundation, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, People's Republic of China
| | - Ruizhi Yao
- College of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, 028000, People's Republic of China
| | - Peng Liu
- National Experimental Teaching Demonstration Center of Animal Medicine Foundation, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, People's Republic of China
| | - Yuying Yang
- National Experimental Teaching Demonstration Center of Animal Medicine Foundation, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, People's Republic of China
| | - Shize Li
- National Experimental Teaching Demonstration Center of Animal Medicine Foundation, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, People's Republic of China.
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8
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Hu Y, Liu Y, Quan X, Fan W, Xu B, Li S. RBM3 is an outstanding cold shock protein with multiple physiological functions beyond hypothermia. J Cell Physiol 2022; 237:3788-3802. [PMID: 35926117 DOI: 10.1002/jcp.30852] [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: 03/16/2022] [Revised: 07/19/2022] [Accepted: 07/25/2022] [Indexed: 11/09/2022]
Abstract
RNA-binding motif protein 3 (RBM3), an outstanding cold shock protein, is rapidly upregulated to ensure homeostasis and survival in a cold environment, which is an important physiological mechanism in response to cold stress. Meanwhile, RBM3 has multiple physiological functions and participates in the regulation of various cellular physiological processes, such as antiapoptosis, circadian rhythm, cell cycle, reproduction, and tumogenesis. The structure, conservation, and tissue distribution of RBM3 in human are demonstrated in this review. Herein, the multiple physiological functions of RBM3 were summarized based on recent research advances. Meanwhile, the cytoprotective mechanism of RBM3 during stress under various adverse conditions and its regulation of transcription were discussed. In addition, the neuroprotection of RBM3 and its oncogenic role and controversy in various cancers were investigated in our review.
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Affiliation(s)
- Yajie Hu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, National Experimental Teaching Demonstration Center of Animal Medicine Foundation, Daqing, China
| | - Yang Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, National Experimental Teaching Demonstration Center of Animal Medicine Foundation, Daqing, China
| | - Xin Quan
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, National Experimental Teaching Demonstration Center of Animal Medicine Foundation, Daqing, China
| | - Wenxuan Fan
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, National Experimental Teaching Demonstration Center of Animal Medicine Foundation, Daqing, China
| | - Bin Xu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, National Experimental Teaching Demonstration Center of Animal Medicine Foundation, Daqing, China
| | - Shize Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, National Experimental Teaching Demonstration Center of Animal Medicine Foundation, Daqing, China
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9
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Hughes DC, Hardee JP, Waddell DS, Goodman CA. CORP: Gene delivery into murine skeletal muscle using in vivo electroporation. J Appl Physiol (1985) 2022; 133:41-59. [PMID: 35511722 DOI: 10.1152/japplphysiol.00088.2022] [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: 11/22/2022] Open
Abstract
The strategy of gene delivery into skeletal muscles has provided exciting avenues in identifying new potential therapeutics towards muscular disorders and addressing basic research questions in muscle physiology through overexpression and knockdown studies. In vivo electroporation methodology offers a simple, rapidly effective technique for the delivery of plasmid DNA into post-mitotic skeletal muscle fibers and the ability to easily explore the molecular mechanisms of skeletal muscle plasticity. The purpose of this review is to describe how to robustly electroporate plasmid DNA into different hindlimb muscles of rodent models. Further, key parameters (e.g., voltage, hyaluronidase, plasmid concentration) which contribute to the successful introduction of plasmid DNA into skeletal muscle fibers will be discussed. In addition, details on processing tissue for immunohistochemistry and fiber cross-sectional area (CSA) analysis will be outlined. The overall goal of this review is to provide the basic and necessary information needed for successful implementation of in vivo electroporation of plasmid DNA and thus open new avenues of discovery research in skeletal muscle physiology.
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Affiliation(s)
- David C Hughes
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, United States
| | - Justin P Hardee
- Centre for Muscle Research (CMR), Department of Anatomy and Physiology, The University of Melbourne, Victoria, Australia
| | - David S Waddell
- Department of Biology, University of North Florida, Jacksonville, FL, United States
| | - Craig A Goodman
- Centre for Muscle Research (CMR), Department of Anatomy and Physiology, The University of Melbourne, Victoria, Australia
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10
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Ávila-Gómez P, Pérez-Mato M, Hervella P, Dopico-López A, da Silva-Candal A, Bugallo-Casal A, López-Amoedo S, Candamo-Lourido M, Sobrino T, Iglesias-Rey R, Castillo J, Campos F. Associations between RNA-Binding Motif Protein 3, Fibroblast Growth Factor 21, and Clinical Outcome in Patients with Stroke. J Clin Med 2022; 11:jcm11040949. [PMID: 35207221 PMCID: PMC8875775 DOI: 10.3390/jcm11040949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/07/2022] [Accepted: 02/09/2022] [Indexed: 01/27/2023] Open
Abstract
Background: RNA-binding motif protein 3 (RBM3) is a cold-induced marker of good functional outcome of ischemic stroke that is promising as a protective target. Fibroblast growth factor 21 (FGF21) is an obesity- and temperature-related hormone that upregulates the expression of RBM3, which is beneficial as a recombinant treatment and has been tested under different experimental pathological conditions, including stroke. However, the interaction between RBM3 and FGF21 has not yet been tested for clinical stroke conditions. Methods: In a sample of 66 stroke patients, we analyzed the associations between the FGF21 and RBM3 serum concentrations on admission and at 72 h, body weight, maximum temperature during the first 24 h, and the outcome of patients at 3 months. We also analyzed their association with biomarkers of obesity (adiponectin and leptin) and inflammation (interleukin-6 (IL-6) and interleukin (IL-10)). Results: Higher concentrations of FGF21 on admission and RBM3 at 72 h were associated with good outcomes. Serum FGF21 and RBM3 were directly related to body mass index and inversely related to the maximum temperature during the first 24 h. We found a positive association between the FGF21 concentrations in obese patients with leptin and a negative correlation with adiponectin in non-obese participants. Conclusions: This clinical study demonstrates the association between RBM3 and FGF21 levels and the outcome of stroke patients. Although further investigations are required, these data support the pharmacological induction of RBM3 as a promising protective therapy.
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Affiliation(s)
- Paulo Ávila-Gómez
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
| | - María Pérez-Mato
- Neurological Sciences and Cerebrovascular Research Laboratory, Department of Neurology and Stroke Center, La Paz University Hospital, Neuroscience Area of IdiPAZ Health Research Institute, Universidad Autónoma de Madrid, Paseo de la Castellana 261, 28046 Madrid, Spain;
| | - Pablo Hervella
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
| | - Antonio Dopico-López
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
| | - Andrés da Silva-Candal
- Neurovascular Diseases Laboratory, Neurology Service, Biomedical Research Institute (INIBIC), University Hospital Complex of A Coruña, 15006 A Coruña, Spain;
| | - Ana Bugallo-Casal
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
| | - Sonia López-Amoedo
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
| | - María Candamo-Lourido
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
| | - Tomás Sobrino
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
| | - Ramón Iglesias-Rey
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
| | - José Castillo
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
| | - Francisco Campos
- Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain; (P.Á.-G.); (P.H.); (A.D.-L.); (A.B.-C.); (S.L.-A.); (M.C.-L.); (T.S.); (R.I.-R.); (J.C.)
- Correspondence: ; Tel./Fax: +34-981951097
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11
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Shi DL, Grifone R. RNA-Binding Proteins in the Post-transcriptional Control of Skeletal Muscle Development, Regeneration and Disease. Front Cell Dev Biol 2021; 9:738978. [PMID: 34616743 PMCID: PMC8488162 DOI: 10.3389/fcell.2021.738978] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/31/2021] [Indexed: 12/21/2022] Open
Abstract
Embryonic myogenesis is a temporally and spatially regulated process that generates skeletal muscle of the trunk and limbs. During this process, mononucleated myoblasts derived from myogenic progenitor cells within the somites undergo proliferation, migration and differentiation to elongate and fuse into multinucleated functional myofibers. Skeletal muscle is the most abundant tissue of the body and has the remarkable ability to self-repair by re-activating the myogenic program in muscle stem cells, known as satellite cells. Post-transcriptional regulation of gene expression mediated by RNA-binding proteins is critically required for muscle development during embryogenesis and for muscle homeostasis in the adult. Differential subcellular localization and activity of RNA-binding proteins orchestrates target gene expression at multiple levels to regulate different steps of myogenesis. Dysfunctions of these post-transcriptional regulators impair muscle development and homeostasis, but also cause defects in motor neurons or the neuromuscular junction, resulting in muscle degeneration and neuromuscular disease. Many RNA-binding proteins, such as members of the muscle blind-like (MBNL) and CUG-BP and ETR-3-like factors (CELF) families, display both overlapping and distinct targets in muscle cells. Thus they function either cooperatively or antagonistically to coordinate myoblast proliferation and differentiation. Evidence is accumulating that the dynamic interplay of their regulatory activity may control the progression of myogenic program as well as stem cell quiescence and activation. Moreover, the role of RNA-binding proteins that regulate post-transcriptional modification in the myogenic program is far less understood as compared with transcription factors involved in myogenic specification and differentiation. Here we review past achievements and recent advances in understanding the functions of RNA-binding proteins during skeletal muscle development, regeneration and disease, with the aim to identify the fundamental questions that are still open for further investigations.
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Affiliation(s)
- De-Li Shi
- Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Developmental Biology Laboratory, CNRS-UMR 7622, Institut de Biologie de Paris-Seine, Sorbonne University, Paris, France
| | - Raphaëlle Grifone
- Developmental Biology Laboratory, CNRS-UMR 7622, Institut de Biologie de Paris-Seine, Sorbonne University, Paris, France
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12
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Van Pelt DW, Lawrence MM, Miller BF, Butterfield TA, Dupont-Versteegden EE. Massage as a Mechanotherapy for Skeletal Muscle. Exerc Sport Sci Rev 2021; 49:107-114. [PMID: 33720912 PMCID: PMC8320327 DOI: 10.1249/jes.0000000000000244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Massage is anecdotally associated with many health benefits, but physiological and clinically relevant mechanisms recently have begun to be investigated in a controlled manner. Herein, we describe research supporting our hypothesis that massage can be used as a mechanotherapy imparting biologically relevant adaptations in skeletal muscle and improving muscle properties.
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Affiliation(s)
- Douglas W Van Pelt
- Department of Physical Therapy and Center for Muscle Biology, University of Kentucky, Lexington, KY
| | - Marcus M Lawrence
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
| | - Benjamin F Miller
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK
| | - Timothy A Butterfield
- Department of Athletic Training and Clinical Nutrition and Center for Muscle Biology, University of Kentucky, Lexington, KY
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13
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Figueiredo VC, D'Souza RF, Van Pelt DW, Lawrence MM, Zeng N, Markworth JF, Poppitt SD, Miller BF, Mitchell CJ, McCarthy JJ, Dupont‐Versteegden EE, Cameron‐Smith D. Ribosome biogenesis and degradation regulate translational capacity during muscle disuse and reloading. J Cachexia Sarcopenia Muscle 2021; 12:130-143. [PMID: 33231914 PMCID: PMC7890271 DOI: 10.1002/jcsm.12636] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/02/2020] [Accepted: 09/16/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Translational capacity (i.e. ribosomal mass) is a key determinant of protein synthesis and has been associated with skeletal muscle hypertrophy. The role of translational capacity in muscle atrophy and regrowth from disuse is largely unknown. Therefore, we investigated the effect of muscle disuse and reloading on translational capacity in middle-aged men (Study 1) and in rats (Study 2). METHODS In Study 1, 28 male participants (age 50.03 ± 3.54 years) underwent 2 weeks of knee immobilization followed by 2 weeks of ambulatory recovery and a further 2 weeks of resistance training. Muscle biopsies were obtained for measurement of total RNA and pre-ribosomal (r)RNA expression, and vastus lateralis cross-sectional area (CSA) was determined via peripheral quantitative computed tomography. In Study 2, male rats underwent hindlimb suspension (HS) for either 24 h (HS 24 h, n = 4) or 7 days (HS 7d, n = 5), HS for 7 days followed by 7 days of reloading (Rel, n = 5) or remained as ambulatory weight bearing (WB, n = 5) controls. Rats received deuterium oxide throughout the study to determine RNA synthesis and degradation, and mTORC1 signalling pathway was assessed. RESULTS Two weeks of immobilization reduced total RNA concentration (20%) and CSA (4%) in men (both P ≤ 0.05). Ambulatory recovery restored total RNA concentration to baseline levels and partially restored muscle CSA. Total RNA concentration and 47S pre-rRNA expression increased above basal levels after resistance training (P ≤ 0.05). In rats, RNA synthesis was 30% lower while degradation was ~400% higher in HS 7d in soleus and plantaris muscles compared with WB (P ≤ 0.05). mTORC1 signalling was lower in HS compared with WB as was 47S pre-rRNA (P ≤ 0.05). With reloading, the aforementioned parameters were restored to WB levels while RNA degradation was suppressed (P ≤ 0.05). CONCLUSIONS Changes in RNA concentration following muscle disuse and reloading were associated with changes in ribosome biogenesis and degradation, indicating that both processes are important determinants of translational capacity. The pre-clinical data help explain the reduced translational capacity after muscle immobilization in humans and demonstrate that ribosome biogenesis and degradation might be valuable therapeutic targets to maintain muscle mass during disuse.
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Affiliation(s)
- Vandré C. Figueiredo
- Liggins InstituteThe University of AucklandAucklandNew Zealand
- Department of Physical Therapy, College of Health SciencesUniversity of KentuckyKYUSA
- Center of Muscle BiologyUniversity of KentuckyKYUSA
| | | | - Douglas W. Van Pelt
- Department of Physical Therapy, College of Health SciencesUniversity of KentuckyKYUSA
- Center of Muscle BiologyUniversity of KentuckyKYUSA
| | - Marcus M. Lawrence
- Aging and Metabolism Research ProgramOklahoma Medical Research Foundation (OMRF)Oklahoma CityOKUSA
| | - Nina Zeng
- Liggins InstituteThe University of AucklandAucklandNew Zealand
| | | | - Sally D. Poppitt
- School of Biological SciencesThe University of AucklandAucklandNew Zealand
| | - Benjamin F. Miller
- Aging and Metabolism Research ProgramOklahoma Medical Research Foundation (OMRF)Oklahoma CityOKUSA
| | - Cameron J. Mitchell
- Liggins InstituteThe University of AucklandAucklandNew Zealand
- School of KinesiologyUniversity of British ColumbiaVancouverCanada
| | - John J. McCarthy
- Center of Muscle BiologyUniversity of KentuckyKYUSA
- College of MedicineUniversity of KentuckyKYUSA
| | - Esther E. Dupont‐Versteegden
- Department of Physical Therapy, College of Health SciencesUniversity of KentuckyKYUSA
- Center of Muscle BiologyUniversity of KentuckyKYUSA
| | - David Cameron‐Smith
- Liggins InstituteThe University of AucklandAucklandNew Zealand
- Human Potential Translational Research Programme, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- Singapore Institute for Clinical SciencesAgency for Science, Technology and ResearchSingapore
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14
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Skeletal muscle RBM3 expression is associated with extended lifespan in Ames Dwarf and calorie restricted mice. Exp Gerontol 2020; 146:111214. [PMID: 33385482 DOI: 10.1016/j.exger.2020.111214] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/23/2020] [Accepted: 12/15/2020] [Indexed: 11/24/2022]
Abstract
RNA binding protein motif 3 (RBM3) is an RNA-binding and cold shock protein that protects myoblasts and promotes skeletal muscle hypertrophy by enhancing mRNA stability and translation. Muscle size is decreased during aging; however, it is typically delayed in models of extended lifespan such as the long-lived Ames Dwarf (df/df) mice and calorie restricted (CR) animals compared to age-matched controls. In light of the protective and anabolic effects of RBM3 in muscle, we hypothesized that RBM3 expression is higher in long-lived animal models. Young and old df/df mice, and adult and old UM-HET3 CR mice were used to test this hypothesis. Gastrocnemius muscles were harvested and protein was isolated for RBM3 protein measurements. CR induced a 1.7 and 1.3-fold elevation in RBM3 protein abundance compared to adult and old male mice fed ad libitum (AL) diets, respectively; this effect was shared between males and females. Ames dwarfism induced a 4.6 and 2.7-fold elevation in RBM3 protein abundance in young and old df/df mice compared to normal control littermates, respectively. In contrast, there was an age-associated decrease in cold-inducible RNA-binding protein (CIRP), suggesting these effects are specific for RBM3. Lastly, there was an age-associated increase in RNA degradation marker decapping enzyme 2 (DCP2) in UM-HET3 mice that was mitigated by CR. These results show that muscle RBM3 expression is correlated with extended lifespan in both df/df and CR animals. Identifying how RBM3 exerts protective effects in muscle may yield new insights into healthy aging of skeletal muscle.
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15
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Van Pelt DW, Confides AL, Abshire SM, Hunt ER, Dupont-Versteegden EE, Butterfield TA. Age-related responses to a bout of mechanotherapy in skeletal muscle of rats. J Appl Physiol (1985) 2019; 127:1782-1791. [PMID: 31670600 PMCID: PMC6962605 DOI: 10.1152/japplphysiol.00641.2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/14/2019] [Accepted: 10/24/2019] [Indexed: 12/25/2022] Open
Abstract
Cyclic compressive loading (CCL) is a massage mimetic that improves muscle regrowth from atrophy in adult rats. Therefore, we tested if a single bout of CCL increases anabolic signaling and protein synthesis in muscle during normal, weight-bearing conditions in gastrocnemius muscle from adult and aged rats. Male Brown Norway/F344 rats at 10 (adult) and 30 (aged) months of age were assigned control or CCL (receiving a single bout of CCL). Twenty-four hours following a single bout of CCL there was no change in protein synthesis, Akt, or GSK3β signaling at either age, despite adult rats having higher abundance and activation of mechanosensitive pathways (integrins and integrin-linked kinase). Murf1 was elevated in response to CCL in both age groups, potentially indicating muscle remodeling. Muscle from aged rats exhibited an increase in heat shock protein (HSP) 25 and HSP70 and in the cold shock protein RNA-binding motif 3 (RBM3), demonstrating a unique stress response to CCL in aged muscle only. Finally, muscle from aged rats exhibited higher basal protein synthesis that was corroborated by elevated eIF2Bε and rpS6 signaling, without an additional effect of CCL. In summary, a single bout of CCL does not have anabolic effects on skeletal muscle during normal, weight-bearing conditions, even though it has previously been shown to improve regrowth from atrophy. These data demonstrate that interventions that may help recover from atrophy do not necessarily induce muscle hypertrophy in unperturbed conditions.NEW & NOTEWORTHY Massage has been demonstrated to be an effective mechanotherapy to improve recovery from atrophy in adult skeletal muscle; however, this study shows that a single bout of massage fails to increase protein synthesis or anabolic signaling in adult or aged skeletal muscle during normal, weight-bearing conditions. Altogether, our data suggest massage is a useful mechanotherapy for preserving skeletal muscle when combined with other interventions but is not an anabolic stimulus on its own.
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Affiliation(s)
- Douglas W Van Pelt
- Department of Physical Therapy, University of Kentucky, Lexington, Kentucky
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
| | - Amy L Confides
- Department of Physical Therapy, University of Kentucky, Lexington, Kentucky
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
| | - Sarah M Abshire
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
- Department of Athletic Training and Clinical Nutrition, University of Kentucky, Lexington, Kentucky
| | - Emily R Hunt
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
- Rehabilitation Sciences PhD Program, University of Kentucky, Lexington, Kentucky
| | - Esther E Dupont-Versteegden
- Department of Physical Therapy, University of Kentucky, Lexington, Kentucky
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
| | - Timothy A Butterfield
- Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
- Department of Athletic Training and Clinical Nutrition, University of Kentucky, Lexington, Kentucky
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16
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Chazarin B, Ziemianin A, Evans AL, Meugnier E, Loizon E, Chery I, Arnemo JM, Swenson JE, Gauquelin-Koch G, Simon C, Blanc S, Lefai E, Bertile F. Limited Oxidative Stress Favors Resistance to Skeletal Muscle Atrophy in Hibernating Brown Bears ( Ursus Arctos). Antioxidants (Basel) 2019; 8:antiox8090334. [PMID: 31443506 PMCID: PMC6770786 DOI: 10.3390/antiox8090334] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 08/18/2019] [Accepted: 08/21/2019] [Indexed: 12/14/2022] Open
Abstract
Oxidative stress, which is believed to promote muscle atrophy, has been reported to occur in a few hibernators. However, hibernating bears exhibit efficient energy savings and muscle protein sparing, despite long-term physical inactivity and fasting. We hypothesized that the regulation of the oxidant/antioxidant balance and oxidative stress could favor skeletal muscle maintenance in hibernating brown bears. We showed that increased expressions of cold-inducible proteins CIRBP and RBM3 could favor muscle mass maintenance and alleviate oxidative stress during hibernation. Downregulation of the subunits of the mitochondrial electron transfer chain complexes I, II, and III, and antioxidant enzymes, possibly due to the reduced mitochondrial content, indicated a possible reduction of the production of reactive oxygen species in the hibernating muscle. Concomitantly, the upregulation of cytosolic antioxidant systems, under the control of the transcription factor NRF2, and the maintenance of the GSH/GSSG ratio suggested that bear skeletal muscle is not under a significant oxidative insult during hibernation. Accordingly, lower levels of oxidative damage were recorded in hibernating bear skeletal muscles. These results identify mechanisms by which limited oxidative stress may underlie the resistance to skeletal muscle atrophy in hibernating brown bears. They may constitute therapeutic targets for the treatment of human muscle atrophy.
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Affiliation(s)
- Blandine Chazarin
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-670000 Strasbourg, France
- Centre National d'Etudes Spatiales, CNES, F-75001 Paris, France
| | - Anna Ziemianin
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-670000 Strasbourg, France
- Centre National d'Etudes Spatiales, CNES, F-75001 Paris, France
| | - Alina L Evans
- Department of Forestry and Wildlife Management, Inland Norway University of Applied Sciences, Campus Evenstad, NO-2480 Koppang, Norway
| | - Emmanuelle Meugnier
- CarMen Laboratory, INSERM 1060, INRA 1397, University of Lyon, F-69600 Oullins, France
| | - Emmanuelle Loizon
- CarMen Laboratory, INSERM 1060, INRA 1397, University of Lyon, F-69600 Oullins, France
| | - Isabelle Chery
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-670000 Strasbourg, France
| | - Jon M Arnemo
- Department of Forestry and Wildlife Management, Inland Norway University of Applied Sciences, Campus Evenstad, NO-2480 Koppang, Norway
- Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
| | - Jon E Swenson
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, NO-1432 Ås, Norway
- Norwegian Institute for Nature Research, NO-7485 Trondheim, Norway
| | | | - Chantal Simon
- CarMen Laboratory, INSERM 1060, INRA 1397, University of Lyon, F-69600 Oullins, France
| | - Stéphane Blanc
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-670000 Strasbourg, France
| | - Etienne Lefai
- CarMen Laboratory, INSERM 1060, INRA 1397, University of Lyon, F-69600 Oullins, France
- Université d'Auvergne, INRA, UNH UMR1019, F-63122 Saint-Genès Champanelle, France
| | - Fabrice Bertile
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-670000 Strasbourg, France.
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17
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Van Pelt DW, Hettinger ZR, Vanderklish PW. RNA-binding proteins: The next step in translating skeletal muscle adaptations? J Appl Physiol (1985) 2019; 127:654-660. [PMID: 31120811 DOI: 10.1152/japplphysiol.00076.2019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The decline of skeletal muscle mass during illness, injury, disuse, and aging is associated with poor health outcomes. Therefore, it is important to pursue a greater understanding of the mechanisms that dictate skeletal muscle adaptation. In this review, we propose that RNA-binding proteins (RBPs) comprise a critical regulatory node in the orchestration of adaptive responses in skeletal muscle. While RBPs have broadly pleiotropic molecular functions, our discussion is constrained at the outset by observations from hibernating animals, which suggest that RBP regulation of RNA stability and its impact on translational reprogramming is a key component of skeletal muscle response to anabolic and catabolic stimuli. We discuss the limited data available on the expression and functions of RBPs in adult skeletal muscle in response to disuse, aging, and exercise. A model is proposed in which dynamic changes in RBPs play a central role in muscle adaptive processes through their differential effects on mRNA stability. While limited, the currently available data suggest that understanding how adaptive (and maladaptive) changes in the expression of RBPs regulate mRNA stability in skeletal muscle could be an informative and productive research area for finding new strategies to limit atrophy and promote hypertrophy.
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Affiliation(s)
- Douglas W Van Pelt
- College of Health Sciences, Department of Rehabilitation Sciences, University of Kentucky, Lexington, Kentucky.,Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
| | - Zachary R Hettinger
- College of Health Sciences, Department of Rehabilitation Sciences, University of Kentucky, Lexington, Kentucky.,Center for Muscle Biology, University of Kentucky, Lexington, Kentucky
| | - Peter W Vanderklish
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California
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18
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Jackson TC, Kochanek PM. A New Vision for Therapeutic Hypothermia in the Era of Targeted Temperature Management: A Speculative Synthesis. Ther Hypothermia Temp Manag 2019; 9:13-47. [PMID: 30802174 PMCID: PMC6434603 DOI: 10.1089/ther.2019.0001] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Three decades of animal studies have reproducibly shown that hypothermia is profoundly cerebroprotective during or after a central nervous system (CNS) insult. The success of hypothermia in preclinical acute brain injury has not only fostered continued interest in research on the classic secondary injury mechanisms that are prevented or blunted by hypothermia but has also sparked a surge of new interest in elucidating beneficial signaling molecules that are increased by cooling. Ironically, while research into cold-induced neuroprotection is enjoying newfound interest in chronic neurodegenerative disease, conversely, the scope of the utility of therapeutic hypothermia (TH) across the field of acute brain injury is somewhat controversial and remains to be fully defined. This has led to the era of Targeted Temperature Management, which emphasizes a wider range of temperatures (33–36°C) showing benefit in acute brain injury. In this comprehensive review, we focus on our current understandings of the novel neuroprotective mechanisms activated by TH, and discuss the critical importance of developmental age germane to its clinical efficacy. We review emerging data on four cold stress hormones and three cold shock proteins that have generated new interest in hypothermia in the field of CNS injury, to create a framework for new frontiers in TH research. We make the case that further elucidation of novel cold responsive pathways might lead to major breakthroughs in the treatment of acute brain injury, chronic neurological diseases, and have broad potential implications for medicines of the distant future, including scenarios such as the prevention of adverse effects of long-duration spaceflight, among others. Finally, we introduce several new phrases that readily summarize the essence of the major concepts outlined by this review—namely, Ultramild Hypothermia, the “Responsivity of Cold Stress Pathways,” and “Hypothermia in a Syringe.”
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Affiliation(s)
- Travis C Jackson
- 1 John G. Rangos Research Center, UPMC Children's Hospital of Pittsburgh, Safar Center for Resuscitation Research, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania.,2 Department of Critical Care Medicine, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania
| | - Patrick M Kochanek
- 1 John G. Rangos Research Center, UPMC Children's Hospital of Pittsburgh, Safar Center for Resuscitation Research, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania.,2 Department of Critical Care Medicine, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania
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