Expression of RAD51, BRCA1 and P53 does not correlate with cellular radiosensitivity of normal human fibroblasts.

Abstract:

AIMS:To evaluate the potential role of key DNA repair proteins in the sensitivity of normal human fibroblasts to ionising radiations. METHODS:Radiosensitivity of six human fibroblast strains established from skin biopsies of women who had undergone conservative breast surgery and received a curative breast conserving radiotherapy was measured by colony-formation assay. The expression level of RAD51, BRCA1 and p53 proteins were studied using western blot analysis. RESULTS:The six fibroblast strains represent a typical spectrum of normal human radiosensitivity with the surviving fraction measured for a dose of 3.5 Gy (SF3.5) ranging from 0.21 to 0.40. We found that these differences in cell survival did not correlate with the expression of RAD51, BRCA1 nor p53 in the tested normal human fibroblast strains. CONCLUSIONS:We conclude that measurement of protein expression of the three tested genes (RAD51, BRCA1 and p53) did not reflect sensitivity of normal fibroblasts to IR.

journal_name

Ir J Med Sci

authors

Saleh EM,El-Awady RA

doi

10.1007/s11845-010-0554-7

subject

Has Abstract

pub_date

2011-09-01 00:00:00

pages

715-20

issue

3

eissn

0021-1265

issn

1863-4362

journal_volume

180

pub_type

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