1,2,3,4,6-penta-O-galloyl-beta-D-glucose protects splenocytes against radiation-induced apoptosis in murine splenocytes.

Abstract:

:Antioxidant property and hematopoietic repair capacity are important characteristics of radioprotective agents. Some studies have demonstrated that 1,2,3,4,6-penta-O-galloyl-beta-D-glucose (PGG), a molecule isolated from the waterlily, has antioxidant, hematopoietic repair, and anti-inflammatory activities. In this study, we try to determine whether PGG extracted from a lily, Nymphaea tetragona var. angusta, has radioprotective effects on splenocytes in vitro against (60)Co gamma-ray irradiation with absorption doses of 2 Gy and 4 Gy. Results show that PGG treatment dramatically enhances the proliferation of splenocytes compared with irradiated but untreated controls. In addition, PGG treatment before irradiation protects the splenocytes from lethal effects of irradiation and decreases DNA damages as identified by the alkaline comet assay. PGG-treated cells also show less radiation-induced apoptosis. These cells have lower concentrations of the pro-apoptotic protein p53 and more of the anti-apoptotic protein Bcl-2. The results presented in this study suggest that PGG has a cytoprotective effect on immune cells exposed to normally damaging amount of radiation. Thus, PGG could be an effective, non-toxic radioprotective agent.

journal_name

Biol Pharm Bull

authors

Bing SJ,Kim MJ,Park E,Ahn G,Kim DS,Ko RK,Lee NH,Shin T,Park JW,Jee Y

doi

10.1248/bpb.33.1122

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

1122-7

issue

7

eissn

0918-6158

issn

1347-5215

pii

JST.JSTAGE/bpb/33.1122

journal_volume

33

pub_type

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