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Improvement of Heart Function After Transplantation of Encapsulated Stem Cells Induced With Mir-1/Myocd in Myocardial Infarction Model of Rat Publisher Pubmed



Khazaei S1 ; Soleimani M2, 3 ; Tafti SHA4 ; Aghdam RM5 ; Hojati Z1
Authors
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Authors Affiliations
  1. 1. Department of Cell and Molecular Biology, Faculty of Biological Science and Technology, Isfahan University, Isfahan, Iran
  2. 2. Tissue Engineering and Hematology Department, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
  3. 3. Tissue Engineering and Nanomedicine Research Center, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  4. 4. Research Center for Advanced Technologies in Cardiovascular Medicine, Tehran heart Center, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. School of Metallurgy & materials Engineering, College of Engineering, University of Tehran, Tehran, Iran

Source: Cell Transplantation Published:2021


Abstract

Cardiovascular disease is one of the most common causes of death worldwide. Mesenchymal stem cells (MSCs) are one of the most common sources in cell-based therapies in heart regeneration. There are several methods to differentiate MSCs into cardiac-like cells, such as gene induction. Moreover, using a three-dimensional (3D) culture, such as hydrogels increases efficiency of differentiation. In the current study, mouse adipose-derived MSCs were co-transduced with lentiviruses containing microRNA-1 (miR-1) and Myocardin (Myocd). Then, expression of cardiac markers, such as NK2 homeobox 5(Nkx2-5), GATA binding protein 4 (Gata4), and troponin T type 2 (Tnnt2) was investigated, at both gene and protein levels in two-dimensional (2D) culture and chitosan/collagen hydrogel (CS/CO) as a 3D culture. Additionally, after induction of myocardial infarction (MI) in rats, a patch containing the encapsulated induced cardiomyocytes (iCM/P) was implanted to MI zone. Subsequently, 30 days after MI induction, echocardiography, immunohistochemistry staining, and histological examination were performed to evaluate cardiac function. The results of quantitative real -time polymerase chain reaction (qRT-PCR) and immunocytochemistry showed that co-induction of miR-1 and Myocd in MSCs followed by 3D culture of transduced cells increased expression of cardiac markers. Besides, results of in vivo study implicated that heart function was improved in MI model of rats in iCM/P-treated group. The results suggested that miR-1/Myocd induction combined with encapsulation of transduced cells in CS/CO hydrogel increased efficiency of MSCs differentiation into iCMs and could improve heart function in MI model of rats after implantation. © The Author(s) 2021.
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