Document Detail

Artemisinin inhibits lipopolysaccharide-induced interferon-β production in RAW 264.7 cells: Implications on signal transducer and activator of transcription-1 signaling and nitric oxide production.
MedLine Citation:
PMID:  23041519     Owner:  NLM     Status:  Publisher    
Artemisinin is a well-known anti-malarial drug and has been shown to inhibit nitric oxide (NO) production. In this study, we investigated the effect of artemisinin on lipopolysaccharide (LPS)-induced production of IFN-β and characterized the potential relationship between artemisinin-mediated inhibition of IFN-β and NO production. Artemisinin suppressed IFN-β production and mRNA expression in a dose-dependent manner in LPS-stimulated RAW 264.7 cells. LPS-induced phosphorylation of signal transducer and activator of transcription-1 (STAT-1) was also inhibited by artemisinin treatment in RAW 264.7 cells. In addition, artemisinin suppressed LPS-induced production of NO in RAW 264.7 cells. Further study demonstrated that artemisinin-mediated inhibition of NO production and STAT-1 phosphorylation was reversed by addition of exogenous IFN-β. Moreover, artemisinin does not affect IFN-β-induced STAT-1 phosphorylation in RAW 264.7 cells. Collectively, these results suggest that the inhibition of IFN-β production by artemisinin and concomitant attenuation of STAT-1 activation might be involved in artemisinin-mediated inhibition of NO production in macrophages.
Ki Hwan Park; Yeo Dae Yoon; Sang-Bae Han; Soo Jin Oh; Jieun Yun; Chang Woo Lee; Kiho Lee; Song-Kyu Park; Hwan Mook Kim; Jong Soon Kang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-2
Journal Detail:
Title:  International immunopharmacology     Volume:  -     ISSN:  1878-1705     ISO Abbreviation:  Int. Immunopharmacol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100965259     Medline TA:  Int Immunopharmacol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier B.V.
Bioevaluation Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongwon, Chungbuk 363-883, Republic of Korea.
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