ATP depletion as a consequence of hypoxia enhances tamoxifen antiproliferative effects in T47D breast carcinoma cells.

Abstract:

:Tamoxifen causes a mitochondrial transmembrane potential dysfunction and ATP depletion, which may play a role in tamoxifen cytotoxicity. Administration of oligomycin-2 deoxy glucose (2DG) enhanced tamoxifen antiproliferative effects, which may be due to exacerbated ATP depletion following tamoxifen and oligomycin-2DG coadministration. Sodium nitroprusside (SNP) did not significantly change tamoxifen responsiveness at 0.1, 0.5, and 1 mM; however, 2 mM SNP hampered tamoxifen effects on cell proliferation and cell cycle. Oligomycin-2DG neither changed iNOS expression nor altered its attenuated expression due to tamoxifen exposure, suggesting that ATP depletion-mediated sensitivity to tamoxifen seems to be apart from iNOS.

journal_name

Oncol Res

journal_title

Oncology research

authors

Seyedabadi M,Ghahremani MH,Ostad SN

doi

10.3727/096504009x12596189659204

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

221-8

issue

5-6

eissn

0965-0407

issn

1555-3906

journal_volume

18

pub_type

杂志文章