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rbmb.net 2023, 12(1): 136-146 |
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Maleki B, Noureddini M, Saadat S, Verdi J, Farrokhian A, Ghanbarian H, et al . Effect of miR-18a-5p, miR-19a-3p, and miR-20a-5p on In Vitro Cardiomyocyte Differentiation of Human Endometrium Tissue-Derived Stem Cells Through Regulation of Smad4 Expression. rbmb.net 2023; 12 (1) :136-146
URL: http://rbmb.net/article-1-1115-en.html
URL: http://rbmb.net/article-1-1115-en.html
Behnaz Maleki 
, Mahdi Noureddini , Somayeh Saadat , Javad Verdi , Alireza Farrokhian , Hossein Ghanbarian , Ebrahim Cheraghi , Behrang Alani *
, Mahdi Noureddini , Somayeh Saadat , Javad Verdi , Alireza Farrokhian , Hossein Ghanbarian , Ebrahim Cheraghi , Behrang Alani *
Department of Applied Cell Sciences, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran.
Abstract: (1267 Views)
Background: Smad4 regulates the expression of the genes required for heart homeostasis. Regarding the central role of microRNAs in cardiac biology, we investigated the expression of the three Smad4-targeting miRNAs, namely miR-18a-5p, miR-19a-3p, and miR-20a-5p, as well as Smad4 during differentiation of human endometrium-derived mesenchymal stem cells (hEMSCs) into cardiomyocytes (CMs).
Methods: To evaluate mesenchymal phenotype and multi-lineage differentiation ability of hEMSCs, immunophenotyping by flow cytometry and differentiation into osteoblasts and adipocytes were performed, respectively. For transdifferentiation into CMs, hEMSCs were exposed to a cardiomyogenic medium composed of 5-aza and bFGF for 30 days. The comparison between transcriptional expression levels of Nkx2-5, GATA4, Smad4, TNNT2, TBX5, miR-18a-5p, miR-19a-3p, and miR-20a-5p by qRT-PCR, as well as protein levels of Nkx2-5, Smad4, and cTnT by immunofluorescence staining, was conducted in every 6 days.
Results: In vitro, the mesenchymal stem cell phenotype of hEMSCs and their potency for differentiation into other MSCs were confirmed. Differentiated hEMSCs had morphological characteristics of CMs. The percentage of positive cells for Nkx2-5, Smad4, and cTnT proteins was increased following induction and culminated on the 24th day. Also, mRNA levels of Nkx2-5, GATA4, Smad4, TNNT2, and TBX5 exhibited the same trend. The expression of investigated miRNAs was significantly decreased sequentially. A significant negative correlation between expressions of Smad4 and investigated miRNAs was observed.
Conclusions: Our results indicate that miR-18a-5p, miR-19a-3p, and miR-20a-5p are involved in the cardiac differentiation propensity of hEMSCs potentially by regulation of Smad levels. Although, more mechanistic experiments are required to confirm this idea.
Methods: To evaluate mesenchymal phenotype and multi-lineage differentiation ability of hEMSCs, immunophenotyping by flow cytometry and differentiation into osteoblasts and adipocytes were performed, respectively. For transdifferentiation into CMs, hEMSCs were exposed to a cardiomyogenic medium composed of 5-aza and bFGF for 30 days. The comparison between transcriptional expression levels of Nkx2-5, GATA4, Smad4, TNNT2, TBX5, miR-18a-5p, miR-19a-3p, and miR-20a-5p by qRT-PCR, as well as protein levels of Nkx2-5, Smad4, and cTnT by immunofluorescence staining, was conducted in every 6 days.
Results: In vitro, the mesenchymal stem cell phenotype of hEMSCs and their potency for differentiation into other MSCs were confirmed. Differentiated hEMSCs had morphological characteristics of CMs. The percentage of positive cells for Nkx2-5, Smad4, and cTnT proteins was increased following induction and culminated on the 24th day. Also, mRNA levels of Nkx2-5, GATA4, Smad4, TNNT2, and TBX5 exhibited the same trend. The expression of investigated miRNAs was significantly decreased sequentially. A significant negative correlation between expressions of Smad4 and investigated miRNAs was observed.
Conclusions: Our results indicate that miR-18a-5p, miR-19a-3p, and miR-20a-5p are involved in the cardiac differentiation propensity of hEMSCs potentially by regulation of Smad levels. Although, more mechanistic experiments are required to confirm this idea.
Keywords: Endometrium-derived mesenchymal stem cells (EMSCs), miR-18a-5p, miR-19a-3p, miR-20a-5p, Smad4.
Type of Article: Original Article |
Subject:
Cell Biology
Received: 2022/12/21 | Accepted: 2023/01/22 | Published: 2023/08/15
Received: 2022/12/21 | Accepted: 2023/01/22 | Published: 2023/08/15
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