International Journal of Nanomedicine (Apr 2020)
Exosome Derived from Coronary Serum of Patients with Myocardial Infarction Promotes Angiogenesis Through the miRNA-143/IGF-IR Pathway
Abstract
Tao Geng, Zhi-Yuan Song, Jing-Xian Xing, Bing-Xun Wang, Shi-Peng Dai, Ze-Sheng Xu Department of Cardiovascular Disease, Cangzhou Central Hospital of Tianjin Medical University, Cangzhou, Hebei Province, People’s Republic of ChinaCorrespondence: Ze-Sheng XuDepartment of Cardiovascular Disease, Cangzhou Central Hospital of Tianjin Medical University, No. 16, Xinhua West Road, Cangzhou, Hebei Province, People’s Republic of ChinaTel +86-15003172868Email [email protected]: Myocardial ischemia-reperfusion injury primarily causes myocardial infarction (MI), which is manifested by cell death. Angiogenesis is essential for repair and regeneration in cardiac tissue after MI. In this study, we aimed to investigate the effect of exosomes derived from the serum of MI patients in angiogenesis and its related mechanism.Patients and Methods: Exosomes, isolated from serum, were collected from MI (MI-exosome) and control (Con-exosome) patients. After coculturing with human umbilical vein endothelial cells, MI-exosome promoted cell proliferation, migration, and tube formation.Results: The results revealed that the production and release of MI-exosome were associated with cardiomyocytes. Moreover, microarray assays demonstrated that miRNA-143 was significantly decreased in MI-exosome. Meanwhile, the overexpression and knockdown of miRNA-143 could inhibit and enhance angiogenesis, respectively. Furthermore, the effect of exosomal miRNA-143 on angiogenesis was mediated by its targeting gene, insulin-like growth factor 1 receptor (IGF-IR), and was associated with the production of nitric oxide (NO).Conclusion: Taken together, exosomes derived from the serum of patients with MI promoted angiogenesis through the IGF-IR/NO signaling pathway. The results provide novel understanding of the function of exosomes in MI.Keywords: myocardial ischemia, exosome, miRNA-143, insulin-like growth factor 1 receptor, angiogenesis
