Experimental study on the mechanism of cisplatin resistance and its reversion in human ovarian cancer.

Abstract:

OBJECTIVE:To explore the mechanism of cisplatin resistance and its reversion in human ovarian cancer. MATERIALS AND METHODS:A cisplatin resistant cell subline of SKOV3, SKOV3/cp, was established, and a xenograft mice model of human ovarian cancer was established by microencapsulation technology. Various biochemical changes and the effects of modulators on the resistance in the model were observed. RESULTS:The intracellular platinum accumulation. Pt-DNA adducts and interstrand cross links of DNA (ISC) in SKOV3 was 5.1, 2.4 and 4.8 times respectively of those in SKOV3/cp cell line. Amphotericin B (AmB) and Novobiocin (NVB) could raise platinum accumulation and Pt-DNA adducts concentration in SKOV3/cp and this resulted in reversion of cisplatin resistance. CONCLUSIONS:The primary factors resulting in SKOV3/cp resistance to cisplatin are the reduction of intracellular drugs and the augmentation of the ability to remove Pt-DNA adducts. AmB and NVB can reverse cisplatin resistance in SKOV3/cp cells.

journal_name

Chin Med J (Engl)

journal_title

Chinese medical journal

authors

Liang Z,Bian D

subject

Has Abstract

pub_date

1996-05-01 00:00:00

pages

353-5

issue

5

eissn

0366-6999

issn

2542-5641

journal_volume

109

pub_type

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