2. Academic Validation
  3. MOTS-c mimics remote ischemic preconditioning in protecting against lung ischemia-reperfusion injury by alleviating endothelial barrier dysfunction

MOTS-c mimics remote ischemic preconditioning in protecting against lung ischemia-reperfusion injury by alleviating endothelial barrier dysfunction

  • Free Radic Biol Med. 2025 Mar 1:229:127-138. doi: 10.1016/j.freeradbiomed.2025.01.016.
Dan-Dan Wang 1,  Bo Xu 2,  Jiao-Jiao Sun 1,  Meng Sui 2,  Sheng-Peng Li 3,  Yi-Jing Chen 3,  Yan-Li Zhang 3,  Jin-Bo Wu 2,  Shi-Yong Teng 4,  Qing-Fang Pang 5,  Chun-Xiao Hu 6
Affiliations

Affiliations

  • 1 Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu province, China; Department of Anesthesiology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, Jiangsu, 214023, China.
  • 2 Department of Anesthesiology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, Jiangsu, 214023, China.
  • 3 Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu province, China.
  • 4 Department of Anesthesiology, First Hospital of Jilin University, Changchun, Jilin, China.
  • 5 Wuxi School of Medicine, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, Jiangsu province, China. Electronic address: qfpang@jiangnan.edu.cn.
  • 6 Department of Anesthesiology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, Jiangsu, 214023, China. Electronic address: huchunxiao91211@163.com.
PMID: 39827923 DOI: 10.1016/j.freeradbiomed.2025.01.016
Abstract

Remote ischemic preconditioning (RIPC) induces the expression of unidentified protective cytokines that mitigate lung ischemia-reperfusion injury (LIRI). This study hypothesizes that MOTS-c, a mitokine with potent protective effects against mitochondrial damage, contributes to RIPC-mediated protection by alleviating endothelial barrier dysfunction. In human lung transplantation patients, serum levels of MOTS-c significantly decreased following IR injury but were markedly increased when RIPC was performed prior to transplantation. Similarly, in a mouse model of LIRI, RIPC restored serum MOTS-c levels and improved lung injury outcomes. Intravenous administration of MOTS-c in mice replicated the protective effects observed with RIPC. Mechanistic studies demonstrated that repeated hypoxia in human primary skeletal muscle immortalized cells (HPSMIC) led to the secretion of conditioned media that protected HUVECs from OGD/R-induced injury; silencing MOTS-c abolished these protective effects. Further investigations using nuclear factor erythroid 2-related factor 2 (Nrf2) knockout mice and the Nrf2 inhibitor ML385 revealed that MOTS-c exerts its protective function by increasing Nrf2 protein levels, thereby maintaining endothelial barrier integrity. In conclusion, this study identifies MOTS-c as a novel mediator of RIPC's protective effects against LIRI and highlights its potential as a therapeutic alternative for preventing lung injury and preserving vascular endothelial function.

Keywords

Apoptosis; Barrier function; Lung ischemia-reperfusion; MOTS-c; Nrf2; Oxidative stress; RIPC.

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