Prenylated Polyphenols from Broussonetia kazinoki as Inhibitors of Nitric Oxide Productionopen access
- Authors
- Lee, Da Yeon; Lee, Hwa Jin; Ryu, Jae-Ha
- Issue Date
- Mar-2018
- Publisher
- MDPI
- Keywords
- Broussonetia kazinoki; prenylated polyphenols; nitric oxide; inducible nitric oxide synthase; nuclear factor kappa B
- Citation
- MOLECULES, v.23, no.3
- Journal Title
- MOLECULES
- Volume
- 23
- Number
- 3
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/4625
- DOI
- 10.3390/molecules23030639
- ISSN
- 1420-3049
- Abstract
- Excessive nitric oxide (NO) production by macrophages has been involved in inflammatory diseases. Seven polyphenols (1-7) were isolated from Broussonetia kazinoki (B. kazinoki) and investigated as potential inhibitors of NO overproduction in lipopolysaccharide (LPS)-activated RAW 264.7 cells. Among them, four prenylated polyphenols (2-4 and 6) with a catechol moiety efficiently suppressed the LPS-induced high level of NO with IC50 values of less than 6 mu M. The compounds 2-4 and 6 also attenuated protein and mRNA levels of inducible nitric oxide synthase (iNOS). Moreover, they suppressed the nuclear factor kappa B (NF-kappa B) activity by inhibiting the degradation of inhibitory-kappa B-alpha (I-kappa B-alpha) and the translocation of NF-kappa B into the nucleus in LPS-activated macrophages. Taken together, these findings suggest that polyphenols from B. kazinoki might be beneficial for treatment of inflammatory diseases.
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