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
Genomicsjournal_title
Genomicsauthors
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 Gdoi
10.1006/geno.2002.6828subject
Has Abstractpub_date
2002-09-01 00:00:00pages
303-10issue
3eissn
0888-7543issn
1089-8646pii
S088875430296828Xjournal_volume
80pub_type
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