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Issertine M, Rosa‐Calwell ME, Sung D, Bouxsein ML, Rutkove SB, Mortreux M. Adaptation to full weight-bearing following disuse in rats: The impact of biological sex on musculoskeletal recovery. Physiol Rep 2024; 12:e15938. [PMID: 38383049 PMCID: PMC10881285 DOI: 10.14814/phy2.15938] [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: 12/21/2023] [Revised: 01/01/2024] [Accepted: 01/01/2024] [Indexed: 02/23/2024] Open
Abstract
With the technological advances made to expand space exploration, astronauts will spend extended amounts of time in space before returning to Earth. This situation of unloading and reloading influences human physiology, and readaptation to full weight-bearing may significantly impact astronauts' health. On Earth, similar situations can be observed in patients who are bedridden or suffer from sport-related injuries. However, our knowledge of male physiology far exceeds our knowledge of female's, which creates an important gap that needs to be addressed to understand the sex-based differences regarding musculoskeletal adaptation to unloading and reloading, necessary to preserve health of both sexes. Using a ground-based model of total unloading for 14 days and reloading at full weight-bearing for 7 days rats, we aimed to compare the musculoskeletal adaptations between males and females. Our results reveal the existence of significant differences. Indeed, males experienced bone loss both during the unloading and the reloading period while females did not. During simulated microgravity, males and females showed comparable muscle deconditioning with a significant decline in rear paw grip strength. However, after 7 days of recovery, muscle strength improved. Additionally, sex-based differences in myofiber size existing at baseline are significantly reduced or eliminated following unloading and recovery.
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Affiliation(s)
- Margot Issertine
- Department of NeurologyBeth Israel Deaconess Medical CenterBostonMassachusettsUSA
- Harvard Medical SchoolBostonMassachusettsUSA
| | - Megan E. Rosa‐Calwell
- Department of NeurologyBeth Israel Deaconess Medical CenterBostonMassachusettsUSA
- Harvard Medical SchoolBostonMassachusettsUSA
| | - Dong‐Min Sung
- Department of NeurologyBeth Israel Deaconess Medical CenterBostonMassachusettsUSA
| | - Mary L. Bouxsein
- Harvard Medical SchoolBostonMassachusettsUSA
- Department of Orthopedic SurgeryBeth Israel Deaconess Medical Center, Center for Advanced Orthopaedic StudiesBostonMassachusettsUSA
| | - Seward B. Rutkove
- Department of NeurologyBeth Israel Deaconess Medical CenterBostonMassachusettsUSA
- Harvard Medical SchoolBostonMassachusettsUSA
| | - Marie Mortreux
- Department of NeurologyBeth Israel Deaconess Medical CenterBostonMassachusettsUSA
- Harvard Medical SchoolBostonMassachusettsUSA
- Department of NutritionUniversity of Rhode IslandKingstonRhode IslandUSA
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Shu Z, Wang L, Wang J, Zhang L, Hou X, Yan H, Wang L. Integrative Analysis of Nanopore and Illumina Sequencing Reveals Alternative Splicing Complexity in Pig Longissimus Dorsi Muscle. Front Genet 2022; 13:877646. [PMID: 35480309 PMCID: PMC9035893 DOI: 10.3389/fgene.2022.877646] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 03/22/2022] [Indexed: 11/13/2022] Open
Abstract
Alternative splicing (AS) is a key step in the post-transcriptional regulation of gene expression that can affect intramuscular fat (IMF). In this study, longissimus dorsi muscles from 30 pigs in high- and low- IMF groups were used to perform Oxford Nanopore Technologies (ONT) full-length sequencing and Illumina strand-specific RNA-seq. A total of 43,688 full-length transcripts were identified, with 4,322 novel genes and 30,795 novel transcripts. Using AStalavista, a total of 14,728 AS events were detected in the longissimus dorsi muscle. About 17.79% of the genes produced splicing isoforms, in which exon skipping was the most frequent AS event. By analyzing the expression differences of mRNAs and splicing isoforms, we found that differentially expressed mRNAs with splicing isoforms could participate in skeletal muscle development and fatty acid metabolism, which might determine muscle-related traits. SERBP1, MYL1, TNNT3, and TNNT1 were identified with multiple splicing isoforms, with significant differences in expression. AS events occurring in IFI6 and GADD45G may cause significant differences in gene expression. Other AS events, such as ONT.15153.3, may regulate the function of ART1 by regulating the expression of different transcripts. Moreover, co-expression and protein-protein interaction (PPI) analysis indicated that several genes (MRPL27, AAR2, PYGM, PSMD4, SCNM1, and HNRNPDL) may be related to intramuscular fat. The splicing isoforms investigated in our research provide a reference for the study of alternative splicing regulation of intramuscular fat deposition.
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Chatel B, Ducreux S, Harhous Z, Bendridi N, Varlet I, Ogier AC, Bernard M, Gondin J, Rieusset J, Westerblad H, Bendahan D, Gineste C. Impaired aerobic capacity and premature fatigue preceding muscle weakness in the skeletal muscle Tfam-knockout mouse model. Dis Model Mech 2021; 14:272176. [PMID: 34378772 PMCID: PMC8461820 DOI: 10.1242/dmm.048981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 07/30/2021] [Indexed: 11/20/2022] Open
Abstract
Mitochondrial diseases are genetic disorders that lead to impaired mitochondrial function, resulting in exercise intolerance and muscle weakness. In patients, muscle fatigue due to defects in mitochondrial oxidative capacities commonly precedes muscle weakness. In mice, deletion of the fast-twitch skeletal muscle-specific Tfam gene (Tfam KO) leads to a deficit in respiratory chain activity, severe muscle weakness and early death. Here, we performed a time-course study of mitochondrial and muscular dysfunctions in 11- and 14-week-old Tfam KO mice, i.e. before and when mice are about to enter the terminal stage, respectively. Although force in the unfatigued state was reduced in Tfam KO mice compared to control littermates (wild type) only at 14 weeks, during repeated submaximal contractions fatigue was faster at both ages. During fatiguing stimulation, total phosphocreatine breakdown was larger in Tfam KO muscle than in wild-type muscle at both ages, whereas phosphocreatine consumption was faster only at 14 weeks. In conclusion, the Tfam KO mouse model represents a reliable model of lethal mitochondrial myopathy in which impaired mitochondrial energy production and premature fatigue occur before muscle weakness and early death. Summary: A time-course study of mitochondrial and muscular dysfunctions in a mouse model of mitochondrial myopathy reveals that decreased resistance to fatigue together with decreased oxidative capacities arise ahead of muscle weakness.
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Affiliation(s)
- Benjamin Chatel
- Aix-Marseille Université, CRMBM UMR CNRS 7339, 13385 Marseille, France.,CellMade, 73370 Le-Bourget-du-Lac, France
| | - Sylvie Ducreux
- CarMeN Laboratory, UMR INSERM U1060/INRA U1397, Université Claude Bernard Lyon1, F-69310 Pierre-Bénite et F-69500 Bron, France
| | - Zeina Harhous
- CarMeN Laboratory, UMR INSERM U1060/INRA U1397, Université Claude Bernard Lyon1, F-69310 Pierre-Bénite et F-69500 Bron, France
| | - Nadia Bendridi
- CarMeN Laboratory, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69600 Oullins, France
| | - Isabelle Varlet
- Aix-Marseille Université, CRMBM UMR CNRS 7339, 13385 Marseille, France
| | - Augustin C Ogier
- Aix-Marseille Université, Université de Toulon, CNRS, LIS, 13397 Marseille, France
| | - Monique Bernard
- Aix-Marseille Université, CRMBM UMR CNRS 7339, 13385 Marseille, France
| | - Julien Gondin
- Institut NeuroMyoGène, UMR CNRS 5310 - INSERM U1217, Université Claude Bernard Lyon 1, F-69008 Lyon, France
| | - Jennifer Rieusset
- CarMeN Laboratory, UMR INSERM U1060/INRA U1397, Université Claude Bernard Lyon1, F-69310 Pierre-Bénite et F-69500 Bron, France
| | - Håkan Westerblad
- Department of Physiology and Pharmacology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - David Bendahan
- Aix-Marseille Université, CRMBM UMR CNRS 7339, 13385 Marseille, France
| | - Charlotte Gineste
- Aix-Marseille Université, CRMBM UMR CNRS 7339, 13385 Marseille, France
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Wang Y, Kankala RK, Cai YY, Tang HX, Zhu K, Zhang JT, Yang DY, Wang SB, Zhang YS, Chen AZ. Minimally invasive co-injection of modular micro-muscular and micro-vascular tissues improves in situ skeletal muscle regeneration. Biomaterials 2021; 277:121072. [PMID: 34454373 DOI: 10.1016/j.biomaterials.2021.121072] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 08/04/2021] [Accepted: 08/15/2021] [Indexed: 12/13/2022]
Abstract
Various conventional treatment strategies for volumetric muscle loss (VML) are often hampered by the extreme donor site morbidity, the limited availability of quality muscle flaps, and complicated, as well as invasive surgical procedures. The conventional biomaterial-based scaffolding systems carrying myoblasts have been extensively investigated towards improving the regeneration of the injured muscle tissues, as well as their injectable forms. However, the applicability of such designed systems has been restricted due to the lack of available vascular networks. Considering these facts, here we present the development of a unique set of two minimally invasively injectable modular microtissues, consisting of mouse myoblast (C2C12)-laden poly(lactic-co-glycolic acid) porous microspheres (PLGA PMs), or the micro-muscles, and human umbilical vein endothelial cell (HUVEC)-laden poly(ethylene glycol) hollow microrods (PEG HMs), or the microvessels. Besides systematic in vitro investigations, the myogenic performance of these modular composite microtissues, when co-injected, was explored in vivo using a mouse VML model, which confirmed improved in situ muscle regeneration and remolding. Together, we believe that the construction of these injectable modular microtissues and their combination for minimally invasive therapy provides a promising method for in situ tissue healing.
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Affiliation(s)
- Ying Wang
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, 361021, PR China
| | - Ranjith Kumar Kankala
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, 361021, PR China; Fujian Provincial Key Laboratory of Biochemical Technology (Huaqiao University), Xiamen, 361021, PR China
| | - Yuan-Yuan Cai
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, 361021, PR China
| | - Han-Xiao Tang
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, 361021, PR China
| | - Kai Zhu
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, PR China
| | - Jian-Ting Zhang
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, 361021, PR China; Fujian Provincial Key Laboratory of Biochemical Technology (Huaqiao University), Xiamen, 361021, PR China
| | - Da-Yun Yang
- Fujian Key Laboratory for Translational Research in Cancer and Neurodegenerative Diseases, Institute for Translational Medicine School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, 350108, PR China
| | - Shi-Bin Wang
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, 361021, PR China; Fujian Provincial Key Laboratory of Biochemical Technology (Huaqiao University), Xiamen, 361021, PR China
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA.
| | - Ai-Zheng Chen
- Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen, 361021, PR China; Fujian Provincial Key Laboratory of Biochemical Technology (Huaqiao University), Xiamen, 361021, PR China.
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