Resistance to the antibiotic Zeocin by stable expression of the Sh ble gene does not fully suppress Zeocin-induced DNA cleavage in human cells.

Abstract:

:Zeocin is a member of the bleomycin/phleomycin family of antibiotics, known to bind and cleave DNA. We established human SK-OV-3 cells that stably express the Zeocin resistance gene (Sh ble) using an ecdysone-inducible mammalian expression system. Surprisingly, our results demonstrated that Zeocin, added in the culture medium to maintain the expression of the ecdysone receptor, was responsible for the formation of DNA strand breaks in the recombinant cells. This suggests that the Zeocin is not completely detoxified and is still able to cleave DNA, despite the stable expression of the Sh ble gene in the recombinant clones. Our study indicates that one needs to be very cautious in the interpretation of data involving stable cell lines selected with Zeocin.

journal_name

Mutagenesis

journal_title

Mutagenesis

authors

Oliva-Trastoy M,Defais M,Larminat F

doi

10.1093/mutage/gei016

subject

Has Abstract

pub_date

2005-03-01 00:00:00

pages

111-4

issue

2

eissn

0267-8357

issn

1464-3804

pii

gei016

journal_volume

20

pub_type

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