Paclitaxel-induced FasL-independent apoptosis and slow (non-apoptotic) cell death.

Abstract:

:Microtubule-active drugs, including paclitaxel (Taxol, PTX), cause mitotic arrest, and this can result in apoptosis. A recently study has reported that PTX mediates apoptosis by upregulating FasL in Jurkat and MDA-231 cells. In contrast to the previous report, we found that anti-FasL antibodies failed to inhibit PTX-induced apoptosis in Jurkat cells. In MDA-231 cells, neither FasL nor PTX induced apoptosis. In these cells, PTX caused slow cell death without activation of caspase-3 or -8 or PARP cleavage. Doxorubicin at cytostatic concentrations did not affect FasL-induced apoptosis but inhibited PTX-induced apoptosis in Jurkat cells. Following PTX-induced mitotic arrest Jurkat cells undergo apoptosis, whereas MDA-MB-231 cells exit mitosis and form multinucleated cells which then die in a slower non-apoptotic manner.

journal_name

Cancer Biol Ther

journal_title

Cancer biology & therapy

authors

Blagosklonny MV,Robey R,Sheikh MS,Fojo T

doi

10.4161/cbt.53

keywords:

subject

Has Abstract

pub_date

2002-03-01 00:00:00

pages

113-7

issue

2

eissn

1538-4047

issn

1555-8576

journal_volume

1

pub_type

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