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Mitochondria and caspases in induced apoptosis in human luteinized granulosa cells.

Abstract：

:Apoptosis occurs as a physiologic process in the ovarian life cycle. Staurosporine, a protein kinase inhibitor, is reported to induce apoptosis. Here, we hypothesize that staurosporine will induce apoptosis in human luteinized granulosa cells and that mitochondria and the caspase cascade participate in this process. Luteinized granulosa cells isolated from in vitro fertilization patients were treated with staurosporine. Microscopy revealed that staurosporine treatment resulted in cells exhibiting evidence of apoptosis, including cell detachment, loss of cell processes, membrane shrinkage, and formation of apoptotic bodies. In the staurosporine-treated cells, flow cytometry and confocal microscopy showed a decrease in the mitochondrial cardiolipin levels. Western analysis showed cleavage of caspase-9, an initiator caspase, of caspase-3, an executioner caspase, and of a caspase substrate, poly-(ADP-ribose)-polymerase (PARP) in staurosporine-treated cells. These data support our hypothesis and that this is the first demonstration of the involvement of mitochondria and of cleavage of caspases in human luteinized granulosa cell apoptosis. This may serve as a useful model to delineate the mechanism of apoptosis in the ovary, such as corpus luteum regression.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Khan SM,Dauffenbach LM,Yeh J

doi

10.1006/bbrc.2000.2321

subject

Has Abstract

pub_date

2000-03-16 00:00:00

pages

542-5

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(00)92321-0

journal_volume

269

pub_type

杂志文章

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