Immunostimulating activity of maysin isolated from corn silk in murine RAW 264.7 macrophages.

Abstract:

:Corn silk (CS) has long been consumed as a traditional herb in Korea. Maysin is a major flavonoid of CS. The effects of maysin on macrophage activation were evaluated, using the murine macrophage RAW 264.7 cells. Maysin was isolated from CS by methanol extraction, and preparative C18 reverse phase column chromatography. Maysin was nontoxic up to 100 μg/ml, and dose-dependently increased TNF-α secretion and iNOS production by 11.2- and 4.2-fold, respectively, compared to untreated control. The activation and subsequent nuclear translocation of NF-κB was substantially enhanced upon treatment with maysin (1-100 μg/ml). Maysin also stimulated the phosphorylation of Akt and MAPKs (ERK, JNK). These results indicated that maysin activates macrophages to secrete TNF-α and induce iNOS expression, via the activation of the Akt, NF-κB and MAPKs signaling pathways. These results suggest for the first time that maysin can be a new immunomodulator, enhancing the early innate immunity.

journal_name

BMB Rep

journal_title

BMB reports

authors

Lee J,Kim SL,Lee S,Chung MJ,Park YI

doi

10.5483/bmbrep.2014.47.7.191

subject

Has Abstract

pub_date

2014-07-01 00:00:00

pages

382-7

issue

7

eissn

1976-6696

issn

1976-670X

pii

2489

journal_volume

47

pub_type

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