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Title: Genetic alterations in chromosome 10q24.3 and glutathione S-transferase omega 2 gene polymorphism in ovarian cancer
Authors: W. Pongstaporn
M. Rochanawutanon
S. Wilailak
V. Linasamita
S. Weerakiat
Songsak Petmitr
Faculty of Medicine, Ramathibodi Hospital, Mahidol University
Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology;Medicine
Issue Date: 1-Mar-2006
Citation: Journal of Experimental and Clinical Cancer Research. Vol.25, No.1 (2006), 107-114
Abstract: The molecular basis of ovarian cancer development has not been fully elucidated. In this study, genetic alterations in ovarian cancer were identified by arbitrarily primed polymerase chain reaction (AP-PCR). A gene in DNA fingerprinting, amplified from primer AE11, was cloned, sequenced, and identified by comparison with known genes in the genome database. Gene amplification in chromosome 10q24.3 was identified and measured by real-time PCR. Three out of 20 cases harbored this gene amplification. This amplified region was identified as IVS-4 of the glutathione-S-transferase Omega 2 (GSTO2) gene. Therefore, the mutations in all 6 exons of the GSTO2 gene were determined. The A to G transition at codon 142 in exon 4 (AAT to GAT, N142D) was observed. The frequency of GSTO2 gene polymorphism was analyzed in 20 ovarian cancers, compared with 41 normal individuals. The gene frequencies of D142 and N142 allele in ovarian cancer cases were 0.3 and 0.7, whereas in normal females, they were 0.2 and 0.8, respectively. The odds ratio of D142 allele in ovarian cancer was 1.73 (95% CI = 0.51-5.89), indicating that this GSTO2 gene polymorphism may be associated with the risk of ovarian cancer.
ISSN: 03929078
Appears in Collections:Scopus 2006-2010

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