1. Mesenchymal stem cells arouse myocardial NAD+ metabolism to alleviate microgravity-induced cardiac dysfunction.
- Author
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Zhang C, Yuan Y, Zhang S, Yan N, Zhao Y, Lu L, Li K, Zhou S, Cai S, Liang F, Ji G, Qu Y, Lv K, Dai Y, Li B, Yan S, Li X, Qu L, and Li Y
- Subjects
- Animals, Mice, Male, Nicotinamide Mononucleotide pharmacology, Nicotinamide Mononucleotide metabolism, Hindlimb Suspension adverse effects, Aging metabolism, Cellular Senescence drug effects, Heart Diseases metabolism, Heart Diseases etiology, Heart Diseases pathology, Heart Diseases therapy, Heart Diseases prevention & control, Mesenchymal Stem Cells metabolism, Mesenchymal Stem Cells cytology, NAD metabolism, Weightlessness adverse effects, Myocardium metabolism, Myocardium pathology, Mice, Inbred C57BL, Mesenchymal Stem Cell Transplantation methods
- Abstract
After prolonged space operations, astronauts showed maladaptive atrophy within mostly left-ventricular myocardium, resulting in cardiac dysfunction. However, the mechanism of cardiac dysfunction under microgravity conditions is unclear, and the relevant prevention and treatment measures also need to be explored. Through simulating the microgravity environment with a tail suspension (TS) model, we found that long-term exposure to microgravity promotes aging of mouse hearts, which is closely related to cardiac dysfunction. The intravenous administration of adipose-derived mesenchymal stem cells (ADSCs) emerged preventive and therapeutic effect against myocardial senescence and the decline in cardiac function. Plasma metabolomics analysis suggests the loss of NAD+ in TS mice and motivated myocardial NAD + metabolism and utilization in ADSCs-treated mice, likely accounting for ADSCs' function. Oral administration of nicotinamide mononucleotide (NMN, a NAD + precursor) showed similar therapeutic effect to ADSCs treatment. Collectively, these data implicate the effect of ADSCs in microgravity-induced cardiac dysfunction and provide new therapeutic ideas for aging-related maladaptive cardiac remodeling., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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