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Yu, C.L. et al.

Yu, Sun, Tsai, Hsieh, Yu,

Anti-dsDNA antibody up-regulates interleukin 6, but not cyclo-oxygenase, gene expression in glomerular mesangial cells: a marker of immune-mediated renal damage?

OBJECTIVE AND DESIGN: To determine whether anti-double stranded DNA antibody (anti-dsDNA) can affect the synthesis of eicosanoids and cytokines in rat glomerular mesangial cells (RMC). MATERIALS OR SUBJECTS: Glomerular mesangial cells were isolated and subcultured from Sprague-Dawley rats. Monoclonal anti-dsDNA (12B3 clone) was derived from autoimmune MRL-lpr/lpr mouse by hybridoma technology. METHODS: The mRNA expression of cyclo-oxygenase type 1 (COX-1), type 2 (COX-2), Th1 ( IL-2 and IFN-gamma)/Th2 ( IL-4 and IL-10) and proinflammatory (IL-6 and TNF-alpha) and anti-inflammatory ( TGF-beta) cytokines of RMC +/- anti-dsDNA was detected by RT-PCR. The PGE2 production by RMC +/- anti-dsDNA was measured by ELISA. The statistical significance was assessed by non-parametric Wilcoxon signed rank test. RESULTS: We found RMC spontaneously expressed COX-1, but not COX-2. The incubation of RMC with anti-dsDNA (50 ng/ml) did not affect COX expression and PGE2 production by RMC. RMC also spontaneously expressed IL-6, TNF-alpha and TGF-beta mRNA. However, only IL-6 was up-regulated by anti-dsDNA. CONCLUSIONS: Increased IL-6 expression in RMC may become a marker of anti-dsDNA-mediated immune damage of mesangial cells.[1]

References

Anti-dsDNA antibody up-regulates interleukin 6, but not cyclo-oxygenase, gene expression in glomerular mesangial cells: a marker of immune-mediated renal damage? Yu, C.L., Sun, K.H., Tsai, C.Y., Hsieh, S.C., Yu, H.S. Inflamm. Res. (2001) [Pubmed]

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