Bone marrow‑derived mesenchymal stem cells rescue injured H9c2 cells via transferring intact mitochondria through tunneling nanotubes in an in vitro simulated ischemia/reperfusion model

Han,Hui; Hu,Jinquan; Yan,Qiang; Zhu,Jinzhou; Zhu,Zhengbin; Chen,Yanjia; Sun,Jiateng; Zhang,Ruiyan

doi:10.3892/mmr.2015.4726

Bone marrow‑derived mesenchymal stem cells rescue injured H9c2 cells via transferring intact mitochondria through tunneling nanotubes in an in vitro simulated ischemia/reperfusion model

Authors:
- Hui Han
- Jinquan Hu
- Qiang Yan
- Jinzhou Zhu
- Zhengbin Zhu
- Yanjia Chen
- Jiateng Sun
- Ruiyan Zhang
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Affiliations: Department of Cardiology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China, Department of Orthopedic Surgery, Changzheng Hospital, Shanghai 200003, P.R. China, Department of Gynaecology and Obstetrics, Nanjing Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210008, P.R. China, Institute of Cardiovascular Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
Published online on: December 28, 2015 https://doi.org/10.3892/mmr.2015.4726
Pages: 1517-1524
Copyright: © Han et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The transplantation of mesenchymal stem cells (MSCs) is considered to be a promising treatment for ischemic heart disease; however, the therapeutic effects and underlying mechanisms of action require further evaluation. Mitochondrial dysfunction is a key event in simulated ischemia/reperfusion (SI/R) injury. The purpose of the present study was to investigate the mechanism of mitochondrial transfer, which may be involved the antiapoptotic action of co-culture with MSCs. An in vitro model of simulated ischemia/reperfusion (SI/R) was used in the present study. The apoptotic indexes were significantly increased when H9c2 cardiomyocytes were induced in the SI/R group. Following co-culture with bone marrow-derived (BM)‑MSCs, H9c2 cells exhibited marked resistance against the SI/R-induced apoptotic process. Besides, mitochondrial transfer via a tunneling nanotube (TNT) like structure was detected by confocal fluorescent microscopy. In addition, following pretreated with latrunculin-A (LatA), an inhibitor of TNT formation, the BM-MSCs were not able to rescue injured H9c2 cells from apoptosis, as previously observed. In conclusion, the anti‑apoptotic ability of BM‑MSCs may be partially attributed to the recovery of mitochondrial dysfunction in SI/R, and the formation of TNTs appears to be involved in this action of mitochondrial transfer between adjacent cells.

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