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Abstract 210: Stem Cell Conditioned Culture Media Attenuated Albumin-induced Epithelial-mesenchymal Transition in Renal Tubular Cells

Mesenchymal stem cells (MSCs) have been shown to be a promising therapy for many different diseases. Stem cell conditioned culture media (SCM) exhibit similar beneficial effects as MSCs. Albuminuria-induced epithelial-mesenchymal transition (EMT) plays an important role in progressive renal tubulointerstitial fibrosis in chronic renal disease. The present study tested the hypothesis that SCM inhibit albumin-induced EMT in cultured renal tubular cells. SCM were obtained by culturing rat adult MSCs for 3 days. Cultured renal proximal tubular cells were incubated with rat albumin (20μg/ml) and treated with SCM or control culture media. Our results showed that 48 h albumin incubation stimulated EMT in renal proximal tubular cells as shown by significant decrease in the protein levels of epithelial marker E-cadherin from 2.30 ± 0.27 to 0.87 ± 0.11 ( P P P