82 294

Cited 41 times in

Restoration of heat shock protein70 suppresses gastric mucosal inducible nitric oxide synthase expression induced by Helicobacter pylori.

Authors
Yeo, M; Park, HK; Kim, DK; Cho, SW; Kim, YS; Cho, SY; Paik, YK; Hahm, KB
Citation
Proteomics, 4(11):3335-3342, 2004
Journal Title
Proteomics
ISSN
1615-98531615-9861
Abstract
Heat shock proteins (HSPs) are crucial for the maintenance of cell integrity during normal cellular growth as well as during pathophysiological conditions. While functioning mainly as molecular chaperones, HSPs also appear to be involved in diverse biological activities, such as apoptosis, carcinogenesis, and cytoprotection from cytotoxic damage. Infection with Helicobacter pylori causes inflammation in the gastric mucosa, leading to gastritis, gastric ulcers, duodenal ulcer disease, and even gastric cancer, but the role of HSPs in H. pylori-associated gastropathy is not known. Using two-dimensional electrophoretic analysis, we have observed significant shifts in HSP profiles after H. pylori infection in RGM-1 cells. We therefore evaluated the effect of treatments that induce HSPs on H. pylori-induced inducible nitric oxide synthase (iNOS) expression. We found that H. pylori infection significantly attenuated the expression of HSP70, whereas exposure of cells to noncytotoxic heat shock or geranylgeranylacetone restored HSP70 expression, as well as suppressing the expression of iNOS, a major cause of H. pylori-induced gastric tissue damage. Our results suggest that induction of HSP70 confers cytoprotection against H. pylori infection by inhibiting the expression of iNOS. In conclusion, these results provide important insights into the flux in HSPs profiles in response to H. pylori infection and highlight the cytoprotective role of HSP70 in H. pylori infection.
MeSH terms
AnimalsElectrophoresis, Gel, Two-DimensionalGastric Mucosa/enzymology/*metabolismHSP70 Heat-Shock Proteins/*metabolismHelicobacter Infections/*metabolismHelicobacter pylori/*metabolismNitric Oxide Synthase/genetics/*metabolismNitric Oxide Synthase Type IIRats
DOI
10.1002/pmic.200400951
PMID
15378740
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Gastroenterology
AJOU Authors
조, 성원함, 기백
Files in This Item:
Full-Text Not Available.txtDownload
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse