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Expression of different mutant p53 transgenes in neuroblastoma cells leads to different cellular responses to genotoxic agents.

Abstract：

:The involvement of p53 as a determinant of chemosensitivity or radiosensitivity is not well understood and is complicated by numerous contradictory reports. Here we have addressed this issue using a series of isogenic clones derived from two neuroblastoma cell lines that express wild-type p53 genes, Nub7 and IMR32. Two different mutant p53 transgenes were used in an attempt to disrupt p53 function in the clones. Our findings indicate that the cellular response is dependent on the genotoxic agent used as well as on the specific p53 transgene used. Cellular radiosensitivity showed no association with apoptosis or with the ability of the cells to arrest in G1 after irradiation. An association was observed, however, between gamma-radiation sensitivity and DNA double-strand break rejoining activity.

journal_name

Exp Cell Res

journal_title

Experimental cell research

authors

Gangopadhyay S,Jalali F,Reda D,Peacock J,Bristow RG,Benchimol S

doi

10.1006/excr.2002.5493

keywords:

subject

Has Abstract

pub_date

2002-04-15 00:00:00

pages

122-31

issue

1

eissn

0014-4827

issn

1090-2422

pii

S0014482702954935

journal_volume

275

pub_type

杂志文章

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