The Effects of Lycium Chinense Milie on the $H_{2}O_{2}$-treated $LLC-PK_1$ Cell's Redox Status and $NF-{\kappa}B$Signaling

지골피(地骨皮)가 $H_{2}O_{2}$에 의한 $LLC-PK_1$ 세포의 Redox Status 및 $NF-{\kappa}B$ Signaling에 미치는 영향

  • Choi, Gyu-Ho (Dept. of Internal Medicine, College of Oriental Medicine, Daegu Haany University) ;
  • Shin, Hyeon-Cheol (Dept. of Internal Medicine, College of Oriental Medicine, Daegu Haany University)
  • 최규호 (대구한의대학교 한의과대학 내과학교실) ;
  • 신현철 (대구한의대학교 한의과대학 내과학교실)
  • Published : 2009.03.31

Abstract

Objectives : This study was aimed to verify the cytoprotective function, antioxidative effect and inflammation genes inhibitory effects of Lycium chinense Milie. Therefore the generation of superoxide anion radical ( $O_2\;^-$), peroxynitrite ($ONOO^-$), nitric oxide (NO) and prostaglandin $E_2$ $(PGE_2)$ was investigated in the renal epithelial cells of mouse. Effects of Lycium chinense Milie on the expression of inflammation-related proteins, $IKK-{\alpha}$. $p-IKK-\alpha\beta$, $p-I{\kappa}B-\alpha$, $NF-{\kappa}B$ (p50, p65), COX-2 and iNOS, were examined by western blotting. Methods : For this study, the fluorescent probes were used, namely dihydrorhodamine 123 (DHR 123), 4.5-diaminofluorescein (DAF-2) and 2',7'-dichlorodihydrofluorescein diacetate (DCFDA). Western blotting was performed using anti-$IKK-\alpha$, anti-phospho $IKK-\alpha\beta$, anti-phospho $I{\kappa}B-\alpha$, anti-$NF-{\kappa}B$ (p50, p65), anti-COX-2 and anti-iNOS, respectively. Results : Lyciutn chinense Milie reduced $H_{2}O_{2}$-induced cell death dose-dependently. It inhibited the generation of $O_2\;^-$, $ONOO^-$, NO and $PGE_2$ in the $H_{2}O_{2}$-treated renal epithelial cells of mouse in vitro. Lycium chinense Milie inhibited the expression of $IKK-\alpha$, $p-IKK-\alpha\beta,\;p-I{\kappa}B-\alpha$, COX-2 and iNOS genes by means of decreasing activation of $NF-{\kappa}B$. Conclusions : According to above results. Lycium chinense Milie recommended to be applied in treatment for the inflammatory process and inflammation-related diseases.

Keywords

References

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