RRC ID 41798
著者 Chen X, Nishida H, Konishi T.
タイトル Baicalin promoted the repair of DNA single strand breakage caused by H2O2 in cultured NIH3T3 fibroblasts.
ジャーナル Biol Pharm Bull
Abstract The protective effect of Baicalin, a flavonoid isolated from the root of Scutellaria baicalensis G., on H2O2-induced DNA single strand break (SSB) was examined in NIH3T3 mouse fibroblasts by Comet assay (single cell gel electrophoresis technique). When the cells were pulse-chased with H2O2 (0.1-0.5 mM) for 15 min in fetal bovine serum (FBS)-free Dulbecco's Modified Eagle's Medium (DMEM), SSB occurred in the DNA as reported elsewhere in dose-dependent manner. Baicalin (50, 100 micro M) which was incubated with the cells for 24 h before the H2O2 chase did not give rise to significant protection against the SSB formation. However, when the time required to cause a change in the DNA damage histogram obtained by the Comet assay was precisely examined after the H2O2 chase, it was found that the H2O2 induced SSB was more promptly repaired in the cells pretreated with Baicalin prior to the H2O2 chase, compared to untreated control cells. At the same time, the cell viability examined by 3-(4,5-dimethylthiazol-2-yl) 2,5-diphenyltetrazolium bromide) (MTT) assay after the H2O2 abuse was moderately recovered in the Baicalin increased by the Baicalin treatment. It was thus concluded that Baicalin that was known as an antioxidant flavonoid in vitro also functions as a biological response modifier, improving the cellular repair potential of oxidatively damaged DNA.
巻・号 26(2)
ページ 282-4
公開日 2003-2-1
DOI 10.1248/bpb.26.282
PMID 12576696
MeSH 3T3 Cells / cytology 3T3 Cells / drug effects* 3T3 Cells / physiology Animals Cell Survival / drug effects Cell Survival / physiology Cytoprotection / drug effects Cytoprotection / physiology DNA Damage / drug effects* DNA Damage / physiology DNA, Single-Stranded* / physiology Flavonoids / pharmacology* Hydrogen Peroxide / toxicity* Mice
IF 1.863
引用数 22
WOS 分野 PHARMACOLOGY & PHARMACY
リソース情報
ヒト・動物細胞