Mycophenolate mofetil alleviates lupus nephritis through urokinase receptor signaling in a mice model.


:Lupus nephritis (LN) is usually associated with widespread effacement of the podocytes' foot processes leading to proteinuria. Induction of urokinase receptor (uPAR) signaling in podocytes leads to foot process effacement and urinary protein loss via promoting podocytes' motility and kidney permeability in the glomerulus. Very little is known about uPAR signaling in LN. Mycophenolate mofetil (MMF), an immunosuppressive agent, efficiently modulates the development of LN in humans and mice, but there are no data concerning the direct uPAR involvement on podocytes in LN. The MMF efficiency and uPAR involvement signaling in NZB×NZW F1 lupus-prone mice were examined by proteinuria, renal function and pathology, immune complex deposits, and uPAR expression of podocytes by immunofluorescence staining and quantitative RT-PCR. After MMF treatment, the proteinuria (p < 0.01), BUN level (p < 0.05) and immunodeposition in glomeruli (p < 0.001) were significantly improved. Most important, the renal uPAR mRNA levels (p < 0.001) and uPAR protein level of podocytes (p < 0.001) were significantly reduced. The beneficial effect of MMF on LN could be attributed, at least in part, to the inhibition of uPAR expression in podocytes. These findings demonstrated uPAR could have potential as a predictive index for response to LN therapeutics.






Cheng CC,Lee YF,Lan JL,Wu MJ,Hsieh TY,Lin NN,Wang JM,Chiu YT




Has Abstract


2013-05-01 00:00:00
















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    authors: Boumpas DT,Balow JE

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    authors: Khubchandani RP,Viswanathan V,Desai J

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    authors: Sirén MK,Julkunen H,Kaaja R,Ekblad H,Koskimies S

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    authors: Lockshin MD

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