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Namwanje M, Mazumdar S, Stayton A, Patel PS, Watkins C, White C, Brown C, Eason JD, Mozhui K, Kuscu C, Pabla N, Stephenson EJ, Bajwa A. Exogenous mitochondrial transfer increases energy expenditure and attenuates adiposity gains in mice with diet-induced obesity. bioRxiv 2023:2023.12.23.573206. [PMID: 38187751 PMCID: PMC10769436 DOI: 10.1101/2023.12.23.573206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Obesity is associated with chronic multi-system bioenergetic stress that may be improved by increasing the number of healthy mitochondria available across organ systems. However, treatments capable of increasing mitochondrial content are generally limited to endurance exercise training paradigms, which are not always sustainable long-term, let alone feasible for many patients with obesity. Recent studies have shown that local transfer of exogenous mitochondria from healthy donor tissues can improve bioenergetic outcomes and alleviate the effects of tissue injury in recipients with organ specific disease. Thus, the aim of this project was to determine the feasibility of systemic mitochondrial transfer for improving energy balance regulation in the setting of diet-induced obesity. We found that transplantation of mitochondria from lean mice into mice with diet-induced obesity attenuated adiposity gains by increasing energy expenditure and promoting the mobilization and oxidation of lipids. Additionally, mice that received exogenous mitochondria demonstrated improved glucose uptake, greater insulin responsiveness, and complete reversal of hepatic steatosis. These changes were, in part, driven by adaptations occurring in white adipose tissue. Together, these findings are proof-of-principle that mitochondrial transplantation is an effective therapeutic strategy for limiting the deleterious metabolic effects of diet-induced obesity in mice.
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Affiliation(s)
- Maria Namwanje
- Transplant Research Institute, Department of Surgery, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - Soumi Mazumdar
- Transplant Research Institute, Department of Surgery, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - Amanda Stayton
- Transplant Research Institute, Department of Surgery, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - Prisha S. Patel
- Transplant Research Institute, Department of Surgery, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - Christine Watkins
- Transplant Research Institute, Department of Surgery, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - Catrina White
- Transplant Research Institute, Department of Surgery, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - Chester Brown
- Department of Pediatrics, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
- Department of Genetics, Genomics, and Informatics, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - James D. Eason
- Transplant Research Institute, Department of Surgery, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - Khyobeni Mozhui
- Department of Preventive Medicine, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - Cem Kuscu
- Transplant Research Institute, Department of Surgery, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
| | - Navjot Pabla
- Division of Pharmaceutics and Pharmacology, College of Pharmacy & Comprehensive Cancer Center, The Ohio State University, Columbus, OH, U.S.A
| | - Erin J. Stephenson
- Department of Anatomy, College of Graduate Studies, Midwestern University, Downers Grove, IL, U.S.A
- Physical Therapy Program, College of Health Sciences, Midwestern University, Downers Grove, IL, U.S.A
- Physician Assistant Program, College of Health Sciences, Midwestern University, Downers Grove, IL, U.S.A
- Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL, U.S.A
- College of Dental Medicine Illinois, Midwestern University, Downers Grove, IL, U.S.A
| | - Amandeep Bajwa
- Transplant Research Institute, Department of Surgery, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
- Department of Genetics, Genomics, and Informatics, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
- Department of Microbiology, Immunology, and Biochemistry, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, U.S.A
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