Modification of chemo-radiosensitivity of a human lung cancer cell line by introduction of the glutathione S-transferase pi gene.

Abstract:

:Recent studies have suggested that glutathione S-transferase pi (GST-pi) may play a role in determining tumor sensitivities to cytotoxic drugs. In order to better understand the role of this enzyme in chemo- and/or radioresistance of lung cancer cells, we examined whether introduction of GST-pi cDNA into a chemo- and radiosensitive lung cancer cell line altered its sensitivities to various chemotherapeutic agents and/or ionizing radiation, which are often used in the management of lung cancers. Modestly increased resistance of the GST-pi transfectants preferentially to sublethal damage caused by ionizing radiation as well as to adriamycin (ADM) was observed. In contrast, resistances to cisplatin (CDDP), etoposide (VP-16), irinotecan hydrochloride (CPT-11) and paclitaxel were virtually unaltered. These results suggest that GST-pi may not play a major role in chemo- and radioresistance of lung cancers, although it could afford selective and limited protection against ADM- and ionizing radiation-induced damage.

journal_name

Jpn J Clin Oncol

authors

Miyara H,Hida T,Nishida K,Takahashi T,Sugiura T,Ariyoshi Y,Morishita M,Takahashi T,Ueda R

doi

10.1093/oxfordjournals.jjco.a023171

subject

Has Abstract

pub_date

1996-02-01 00:00:00

pages

1-5

issue

1

eissn

0368-2811

issn

1465-3621

journal_volume

26

pub_type

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