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Leduc-Gaudet JP, Miguez K, Cefis M, Faitg J, Moamer A, Chaffer TJ, Reynaud O, Broering FE, Shams A, Mayaki D, Huck L, Sandri M, Gouspillou G, Hussain SN. Autophagy ablation in skeletal muscles worsens sepsis-induced muscle wasting, impairs whole-body metabolism, and decreases survival. iScience 2023; 26:107475. [PMID: 37588163 PMCID: PMC10425945 DOI: 10.1016/j.isci.2023.107475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 05/18/2023] [Accepted: 07/21/2023] [Indexed: 08/18/2023] Open
Abstract
Septic patients frequently develop skeletal muscle wasting and weakness, resulting in severe clinical consequences and adverse outcomes. Sepsis triggers sustained induction of autophagy, a key cellular degradative pathway, in skeletal muscles. However, the impact of enhanced autophagy on sepsis-induced muscle dysfunction remains unclear. Using an inducible and muscle-specific Atg7 knockout mouse model (Atg7iSkM-KO), we investigated the functional importance of skeletal muscle autophagy in sepsis using the cecal ligation and puncture model. Atg7iSkM-KO mice exhibited a more severe phenotype in response to sepsis, marked by severe muscle wasting, hypoglycemia, higher ketone levels, and a decreased in survival as compared to mice with intact Atg7. Sepsis and Atg7 deletion resulted in the accumulation of mitochondrial dysfunction, although sepsis did not further worsen mitochondrial dysfunction in Atg7iSkM-KO mice. Overall, our study demonstrates that autophagy inactivation in skeletal muscles triggers significant worsening of sepsis-induced muscle and metabolic dysfunctions and negatively impacts survival.
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Affiliation(s)
- Jean-Philippe Leduc-Gaudet
- Research Group in Cellular Signaling, Department of Medical Biology, Université du Québec À Trois-Rivières, Trois-Rivières, QC G9A 5H7, Canada
- Department of Critical Care and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre (MUHC), Montréal, QC H3H 2R9, Canada
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
- Département des sciences de l’activité physique, Faculté des sciences, Université du Québec à Montréal (UQAM), Montréal, QC H2X 1Y4, Canada
| | - Kayla Miguez
- Department of Critical Care and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre (MUHC), Montréal, QC H3H 2R9, Canada
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
| | - Marina Cefis
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
- Département des sciences de l’activité physique, Faculté des sciences, Université du Québec à Montréal (UQAM), Montréal, QC H2X 1Y4, Canada
| | - Julie Faitg
- Département des sciences de l’activité physique, Faculté des sciences, Université du Québec à Montréal (UQAM), Montréal, QC H2X 1Y4, Canada
- Amazentis SA, EPFL Innovation Park, 1015 Lausanne, Switzerland
| | - Alaa Moamer
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
| | - Tomer Jordi Chaffer
- Department of Critical Care and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre (MUHC), Montréal, QC H3H 2R9, Canada
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
| | - Olivier Reynaud
- Département des sciences de l’activité physique, Faculté des sciences, Université du Québec à Montréal (UQAM), Montréal, QC H2X 1Y4, Canada
| | - Felipe E. Broering
- Department of Critical Care and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre (MUHC), Montréal, QC H3H 2R9, Canada
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
| | - Anwar Shams
- Department of Pharmacology, Faculty of Medicine, Taif University, P.O.BOX 11099, Taif 21944, Saudi Arabia
| | - Dominique Mayaki
- Department of Critical Care and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre (MUHC), Montréal, QC H3H 2R9, Canada
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
| | - Laurent Huck
- Department of Critical Care and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre (MUHC), Montréal, QC H3H 2R9, Canada
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
| | - Marco Sandri
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
- Veneto Institute of Molecular Medicine (VIMM) and Department of Biomedical Science, Università di Padova, 35129 Padova, Italy
| | - Gilles Gouspillou
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
- Département des sciences de l’activité physique, Faculté des sciences, Université du Québec à Montréal (UQAM), Montréal, QC H2X 1Y4, Canada
| | - Sabah N.A. Hussain
- Department of Critical Care and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre (MUHC), Montréal, QC H3H 2R9, Canada
- Meakins-Christie Laboratories, Department of Medicine, Faculty of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
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Chaffer TJ, Broering FE, Sedraoui S. Histone-mediated skeletal muscle adaptations to exercise: insights into a new era of epigenome-based personalized medicine. J Physiol 2022; 600:3903-3904. [PMID: 35908267 DOI: 10.1113/jp283434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Tomer Jordi Chaffer
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada.,Division of Experimental Medicine, McGill University, Quebec, Canada
| | - Felipe E Broering
- Division of Experimental Medicine, McGill University, Quebec, Canada.,Division of Geriatric Medicine, MUHC-Montreal General Hospital, McGill University, Montreal, Quebec, Canada
| | - Sami Sedraoui
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada.,Division of Experimental Medicine, McGill University, Quebec, Canada
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Chaffer TJ, Cefis M, Leduc-Gaudet JP. Circadian control of skeletal muscle adaptations to exercise. J Physiol 2021; 600:723-724. [PMID: 34339519 DOI: 10.1113/jp282134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Tomer Jordi Chaffer
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada.,Division of Experimental Medicine, McGill University, Quebec, Canada
| | - Marina Cefis
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada.,Département des sciences de l'activité physique, Faculté des Sciences, UQAM, Québec, Canada
| | - Jean-Philippe Leduc-Gaudet
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada.,Division of Experimental Medicine, McGill University, Quebec, Canada.,Département des sciences de l'activité physique, Faculté des Sciences, UQAM, Québec, Canada
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Chaffer TJ, Leduc-Gaudet JP, Moamer A, Broering FE, Gouspillou G, Hussain SNA. Novel insights into the autonomous role played by vitamin D receptor in the regulation of skeletal muscle mass. J Physiol 2021; 599:1955-1956. [PMID: 33476041 DOI: 10.1113/jp281211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 01/19/2021] [Indexed: 11/08/2022] Open
Affiliation(s)
- Tomer Jordi Chaffer
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada.,Division of Experimental Medicine, McGill University, Quebec, Canada.,Department of Biology, Acadia University, Wolfville, Nova Scotia, Canada
| | - Jean-Philippe Leduc-Gaudet
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada.,Division of Experimental Medicine, McGill University, Quebec, Canada.,Département des sciences de l'activité physique, Faculté des Sciences, UQAM, Québec, Canada
| | - Alaa Moamer
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada
| | - Felipe E Broering
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada.,Division of Experimental Medicine, McGill University, Quebec, Canada
| | - Gilles Gouspillou
- Division of Experimental Medicine, McGill University, Quebec, Canada.,Département des sciences de l'activité physique, Faculté des Sciences, UQAM, Québec, Canada
| | - Sabah N A Hussain
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Department of Critical Care, McGill University Health Centre, Quebec, Canada.,Division of Experimental Medicine, McGill University, Quebec, Canada
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