Contribution of inducible nitric oxide synthase and cyclooxygenase-2 to apoptosis induction in smooth chorion trophoblast cells of human fetal membrane tissues.

Abstract:

:We examined the contribution of apoptosis- and oxidative stress-associated genes to apoptosis induction in trophoblast cells of human fetal membrane tissues undergoing apoptosis during in vitro incubation. RT-PCR analyses demonstrated an increased level of HO-1, Mn-SOD, Cox-2, iNOS, TNFalpha, TNFR1, IL-1beta, IL-6, Bax, Bak, and Bad gene expression, while Bcl-2 mRNA expression level decreased. Western blot analyses demonstrated an increase in iNOS, Cox-2, and HO-1 protein levels; a decrease in pro-caspase-3 and 9, proform-PARP, and Apaf-1 protein levels; a leakage of cytochrome c from the mitochondria. An antioxidative reagent, general and selective Cox-2 inhibitors, and an iNOS inhibitor suppressed in vitro progression of the apoptosis. Furthermore, an NO donor reagent induced apoptosis in primary cultured trophoblast cells. Therefore, we concluded that the induction of apoptosis in the smooth chorion trophoblasts is mediated through oxidative stress induction followed by mitochondria damage, suggesting that iNOS and Cox-2 play an important role in the apoptosis induction in trophoblasts of human fetal membrane tissues.

authors

Yuan B,Ohyama K,Bessho T,Toyoda H

doi

10.1016/j.bbrc.2006.01.042

subject

Has Abstract

pub_date

2006-03-17 00:00:00

pages

822-7

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(06)00118-5

journal_volume

341

pub_type

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