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학술저널
저자정보
Lee, Seung-Eun (Department of Microbiology [BK21] and MRC for Bioreaction to Reactive Oxygen Species, School of Medicine, Kyung Hee University) Lee, Nam-Ju (Department of Microbiology [BK21] and MRC for Bioreaction to Reactive Oxygen Species, School of Medicine, Kyung Hee University) Lee, Sun-Hee (Department of Microbiology [BK21] and MRC for Bioreaction to Reactive Oxygen Species, School of Medicine, Kyung Hee University) Park, Cheung-Seog (Department of Microbiology [BK21] and MRC for Bioreaction to Reactive Oxygen Species, School of Medicine, Kyung Hee University) Ahn, Hyun-Jong (Department of Microbiology [BK21] and MRC for Bioreaction to Reactive Oxygen Species, School of Medicine, Kyung Hee University) Park, Yong-Seek (Department of Microbiology [BK21] and MRC for Bioreaction to Reactive Oxygen Species, School of Medicine, Kyung Hee University)
저널정보
대한독성유전단백체학회 Molecular & cellular toxicology Molecular & cellular toxicology 제6권 제1호
발행연도
2010.1
수록면
33 - 40 (8page)

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Uncaria rhynchophylla (UR) is an herbal plant that has been used widely to treat stroke, hypertension and atherosclerosis. Upregulated heme oxygenase-1 (HO-1) plays a crucial role in cytoprotection and anti-inflammatory responses in a variety of pathological models. In this study, we investigated upregulation of HO-1 by UR, which is inducible and cytoprotective enzyme in RAW 264.7 macrophages. Upregulation of HO-1 and signal pathways were examined by western blots, RT-PCR and immunofluorescence staining. Treatment of UR induced HO-1 protein expression and Nrf2 nuclear translocation in RAW 264.7 macrophages. HO-1 induction was strongly inhibited by the suppression of p38 MAPK and ERK activity. Additionally, rottlerin, an inhibitor of protein kinase $C{\delta}$(PKC ${\delta}$), abolished the upregulation of HO-1 protein levels. From the above results, it is suggested that UR may exert a cytoprotective effect via the upregulation of HO-1 in RAW 264.7 macrophages.

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