Sequencing, transcript identification, and quantitative gene expression profiling in the breast cancer loss of heterozygosity region 16q24.3 reveal three potential tumor-suppressor genes.

Abstract:

:Loss of heterozygosity (LOH) of chromosome 16q24.3 is a common genetic alteration observed in invasive ductal and lobular breast carcinomas. We constructed a physical map and generated genomic DNA sequence data spanning 2.4 Mb in this region. Detailed in silico and in vitro analyses of the genomic sequence data enabled the identification of 104 genes. It was hypothesized that tumor-suppressor genes would exhibit marked mRNA expression variability in a panel of breast cancer cell lines as a result of downregulation due to mutation or hypermethylation. We examined the mRNA expression profiles of the genes identified at 16q24.3 in normal breast, a normal breast epithelial cell line, and several breast cancer cell lines exhibiting 16q24.3 LOH. Three of the genes, CYBA, Hs.7970, and CBFA2T3, exhibited variability ten times higher than the baseline. The possible role of these genes as tumor suppressors is discussed.

journal_name

Genomics

journal_title

Genomics

authors

Powell JA,Gardner AE,Bais AJ,Hinze SJ,Baker E,Whitmore S,Crawford J,Kochetkova M,Spendlove HE,Doggett NA,Sutherland GR,Callen DF,Kremmidiotis G

doi

10.1006/geno.2002.6828

subject

Has Abstract

pub_date

2002-09-01 00:00:00

pages

303-10

issue

3

eissn

0888-7543

issn

1089-8646

pii

S088875430296828X

journal_volume

80

pub_type

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