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  • Title: [Wnt/β-catenin pathway involved in the regulation of rat mesangial cell proliferation by adipose-derived mesenchymal stem cells].
    Author: Li Z, Zhang M, Li X, Lu J, Xu L.
    Journal: Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi; 2016 Nov; 32(11):1486-1490. PubMed ID: 27774940.
    Abstract:
    Objective To investigate the effect of adipose-derived mesenchymal stem cells (ADSCs) on glomerular mesangial cell proliferation via Wnt/β-catenin pathway. Methods The rat glomerular mesangial cells (HBZY-1) were incubated in conditioned ADSC medium. Cell cycle was analyzed with flow cytometry; the proliferation rate of HBZY-1 and the expression levels of relative genes and proteins of Wnt signaling pathway were measured using RNA interference, quantitative real-time PCR and Western blotting, respectively. Results HBZY-1 proliferation was significantly inhibited under the action of conditioned ADSC medium, whereas dickkopf WNT signaling pathway inhibitor 1 (DKK1) mRNA level was up-regulated. Fibronectin and TGF-β1 mRNA expression as well as β-catenin and Bcl-2 protein levels of HBZY-1 were significantly down-regulated. DKK1 gene expression level in ADSCs was significantly higher than that of HBZY-1. After RNA interference, DKK1 expression level in ADSCs was markedly inhibited, yet the β-catenin protein level was notably elevated. The β-catenin and Bcl-2 protein levels of HBZY-1 were also significantly raised in HBZY-1 after cultured with conditioned medium containing ADSCs treated with RNA interference. Conclusion Wnt/β-catenin may be a potential signaling pathway involved in the regulative effect of ADSCs on glomerular mesangial cell proliferation.
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