Extrinsic factors promoting in vitro differentiation of insulin-secreting cells from human adipose tissue-derived mesenchymal stem cells.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Understanding of β cell regeneration is needed to develop new treatment modalities in diabetes mellitus. We present our experience of glucose-sensitive insulin-secreting mesenchymal stem cells (IS-MSC) generated and differentiated from human adipose tissue (h-AD) with application of specific differentiation media, sans xenogenic material. h-AD from donor abdominal wall was collected in proliferation medium composed of α-Minimum Essential Media, albumin, fibroblast-growth factor and antibiotics, minced, incubated in collagenase I at 37 °C with shaker and centrifuged. Supernatant and pellets were separately cultured in proliferation medium on cell + plates at 37 °C with 5 % CO(2) for 10 days. Cells were harvested, checked for viability, sterility, quantification, flow-cytometry (CD45(-)/90(+)/73(+)), and differentiated into insulin-expressing cells using medium composed of Dulbecco's modified eagle's medium, gene expressing upregulators and antibiotics for 3 days. They were studied for transcriptional factors paired box genes-6(Pax-6), islet 1 transcriptional factor (Isl-1), pancreatic and duodenal homobox-1(Pdx-1). C-peptide and insulin were measured by chemiluminescence. IS-MSC showed presence of all three transcriptional factors and showed rise in insulin and c-peptide level in presence of glucose stimuli. It can be concluded that the specific extrinsic factors used in the def

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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