Abstract
We verified expression of CXCL12 and Hoxa3 transcription factors of differentiation in cultures of human embryonic pancreatic and bronchial cells and CXCL12 and WEGC1 factors in a culture of human prostatic fibroblasts. Reduced expression of these differentiation markers was detected in late-passage (aging) cultures. The expression of differentiation factors CXCL12, Hoxa3, and WEGC1 was tissue-specifically stimulated by short peptides: pancragen (Lys-Glu-Asp-Trp) in pancreatic cells, bronchogen (Ala-Glu-Asp-Leu) in bronchial epithelial cells, and vesugen (Lys-Glu-Asp) in fibroblasts. The inducing effect of peptides on the expression of differentiation factors was more pronounced in aged cultures, which can serve as a mechanism of their geroprotective effect.
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