Abstract
BACKGROUND: Human embryonic stem cell-mesenchymal stem/stromal cell (hESCs-MSCs) open a new insight into future cell therapy applications, due to their unique characteristics, including immunomodulatory features, proliferation, and differentiation. METHODS: Herein, hESCs-MSCs were characterized by immunofluorescence technique with CD105 and FIBRONECTIN as markers and FIBRONECTIN, VIMENTIN, CD10, CD105, and CD14 genes using reverse transcription-polymerase chain reaction technique. Fluorescence-activated cell sorting was performed for CD44, CD73, CD90, and CD105 markers. Moreover, these fibroblast-like cells, due to multipotent characteristics, differentiated to the osteoblast. RESULTS: MSCs were derived from diploid and triploid hESC lines using sequential three dimensional and two dimensional cultures and characterized with the specific markers. Immunofluorescence showed the expression of FIBRONECTIN and CD105 in hESCs-MSCs. Flow cytometry data indicated no significant difference in the expression of MSC markers after 6 and 13 passages. Interestingly, gene expression profiles revealed slight differences between MSCs from diploid and triploid hESCs. hESCs-MSCs displayed osteogenic differentiation capacity, which was confirmed by Alizarin red staining. COBNCLUSION: Our findings reveal that both diploid and triploid hESC lines are capable of forming MSCs; however, there are some differences in their gene expression profiles. Generation of MSCs from hESCs, as a non-invasive procedure in large scale, will lend itself for the future cell-based therapeutic applications.