Kemampuan conditioned medium dari kultur primer pankreas dewasa dalam mengarahkan (diferensiasi) embryonic stem cell Mencit Menjadi Sel Beta Pankreas

Abstract

The ability of embryonic stem cells (ESC) to differentiate into all cell types of the body has become a new hope in curing various degenerative diseases including diabetes. In diabetes, ESC can be used as a cell source that can be differentiated into pancreatic beta cells before being transplanted. The differentiation of ESC was influenced by several growth factors, such as activin, fibroblast growth factor, retinoic acid, and transforming growth factor. In this research, we examined the influence of conditioned medium (CM) resulted from the primary culture of adult mouse pancreas in various concentration (0%, 10%, 30%, and 50%) toward differentiation of ESC into pancreatic beta cells. Differentiation of ESC into pancreatic beta cells indicated by the positive result from dithizone staining and the expression of proinsulin 1 and proinsulin 2 genes. The results showed that ESC cultured with 50% CM concentration had higher quality of colour intensity than the 30% and 10% concentration (P < 0.05). The RNA analysis clearly showed that dithizone positive cells are expressing proinsulin 1 and proinsulin 2, which indicate gene mark of pancreatic beta cells. In conclusion, CM resulted from the primary culture of adult mouse pancreas was able to differentiate ESC into pancreatic beta cells with 50% CM as the optimum concentration to direct ESC differentiation into pancreatic beta cells.