Past Issue

Volume 16, Number 3, Autumn 2014, Serial Number: 63, Pages: 235-244

A Comparative Study of Osteogenic Differentiation Human Induced Pluripotent Stem Cells and Adipose Tissue Derived Mesenchymal Stem Cells


Abdolreza Ardeshirylajimi, Ph.D, 1, *, Masoud Soleimani, Ph.D, 2, Saman Hosseinkhani, Ph.D, 3, Kazem Parivar, Ph.D, 1, Parichehr Yaghmaei, Ph.D, 1,
Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
Department of Hematology, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran
Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
*Corresponding Address: Department of Biology Science and Research Branch Islamic Azad University Tehran Iran Email:r.ardeshiry.62@gmail.com

Abstract

Objective

Human induced pluripotent stem cells (iPSCs) have been shown to have promising capacity for stem cell therapy and tissue engineering applications. Therefore, it is essential to compare the ability of these cells with the commonly used mesenchymal stem cells (MSC) for bone tissue engineering in vitro.

Materials and Methods

In this experimental study, the biological behavior and osteo- genic capacity of the iPSCs were compared with MSCs isolated from human adipose tissue (AT-MSCs) using 3-(4,5-di-methylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, Alizarin red staining, alkaline phosphatase (ALP) activity measurements, calcium content assay and common osteogenic-related genes. Data were reported as the mean ± SD. One-way analysis of variance (ANOVA) was used to compare the results. A p value of less than 0.05 was considered statistically significant.

Results

There was a significant difference between the rate of proliferation of the two types of stem cells; iPSCs showed increased proliferation compared to AT-MSCs. During osteogenic differentiation, ALP activity and mineralization were demonstrated to be significantly higher in iPSCs. Although AT-MSCs expressed higher levels of Runx2, iPSCs expressed higher levels of osteonection and osteocalcin during differentiation.

Conclusion

iPSCs showed a higher capacity for osteogenic differentiation and hold promising potential for bone tissue engineering and cell therapy applications.