Detection of genetic instability at HER-2/neu and p53 loci in breast cancer cells sing Comet-FISH

Tirukalikundram S. Kumaravel, Robert G. Bristow*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A proportion of breast cancers acquire genetic alterations at 17q11.2-q12 (HER-2/neu), 20q13.2 (ZNF217 gene) and 17p13.1 (p53). We describe a unique technique (Comet-FISH) in which we documented relative genetic instability at p53 and HER-2/neu gene loci within a panel of malignant breast cancer cell lines (MCF-7; MDA-MB-468 and CRL-2336). Furthermore, Comet-FISH data were consistent with preferential repair of the p53 locus following gentoxic insult and suggest that this assay may be quite useful for the study of genetic instability.

Original languageEnglish
Pages (from-to)89-93
Number of pages5
JournalBreast Cancer Research and Treatment
Volume91
Issue number1
DOIs
Publication statusPublished - May 2005

Keywords

  • Breast cancer
  • Breast cancer cell lines
  • Comet assay
  • DNA breaks
  • Fluorescent in situ hybridization (FISH)
  • Genetic instability
  • HER-2/neu
  • p53

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