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Mechanical strain stress suppresses expression of HSP70 and wound restoration in gastric mucosal cells.

Abstract：

:The major heat shock protein, HSP70, is known to be involved in cytoprotection against environmental stresses mediated by their function as a "molecular chaperone." However, the influence of HSP70 on gastric mucosal healing under physical stimulation or stress is not completely understood. Rat gastric mucosal cells (RGM-1) were stably transfected with pBK-CMV containing the human HSP70 gene (7018-RGM-1) or pBK-CMV alone (pBK-CMV-12). Artificial wounds were created. Mechanical stretch was applied to 7018-RGM-1 cells or pBK-CMV-12 cells. The effect of mechanical stretch on HSP70 expression was assessed by Western blot analysis. Expression of HSP70 was decreased by mechanical stretch in pBK-CMV-12 cells. However, expression of HSP70 was not decreased by mechanical stretch in 7018-RGM-1 cells. Furthermore, the wound restoration of pBK-CMV-12 cells was suppressed under mechanical stretch condition. On the other hand, the wound restoration of 7018-RGM-1 cells was not affected by mechanical stretch. These results suggest that HSP70 plays an important role in gastric wound healing under physical stress.

journal_name

Dig Dis Sci

journal_title

Digestive diseases and sciences

authors

Odashima M,Otaka M,Matsuhashi T,Jin M,Horikawa Y,Ohba R,Itoh H,Watanabe S

doi

10.1007/s10620-007-9795-3

subject

Has Abstract

pub_date

2007-11-01 00:00:00

pages

3087-91

issue

11

eissn

0163-2116

issn

1573-2568

journal_volume

52

pub_type

杂志文章

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