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http://dx.doi.org/10.5230/jgc.2012.12.2.73

Amplification of the UQCRFS1 Gene in Gastric Cancers  

Jun, Kyong-Hwa (Department of General Surgery, The Catholic University of Korea)
Kim, Su-Young (Department of Pathology, College of Medicine, The Catholic University of Korea)
Yoon, Jung-Hwan (Department of Pathology, College of Medicine, The Catholic University of Korea)
Song, Jae-Hwi (Department of Pathology, College of Medicine, The Catholic University of Korea)
Park, Won-Sang (Department of Pathology, College of Medicine, The Catholic University of Korea)
Publication Information
Journal of Gastric Cancer / v.12, no.2, 2012 , pp. 73-80 More about this Journal
Abstract
Purpose: The specific aim of this study is to unravel a DNA copy number alterations, and to search for novel genes that are associated with the development of Korean gastric cancer. Materials and Methods: We investigated a DNA copy number changes in 23 gastric adenocarcinomas by array-comparative genomic hybridization and quantitative real-time polymerase chain reaction analyses. Besides, the expression of UQCRFS1, which shows amplification in array-CGH, was examined in 186 gastric cancer tissues by an immunohistochemistry, and in 9 gastric cancer cell lines, as well as 24 gastric cancer tissues by immunoblotting. Results: We found common gains at 48 different loci, and a common loss at 19 different loci. Amplification of UQCRFS1 gene at 19q12 was found in 5 (21.7%) of the 23 gastric cancers in an array-comparative genomic hybridization and DNA copy number were increased in 5 (20.0%) out of the 25 gastric cancer in quantitative real-time polymerase chain reaction. In immunohistochemistry, the overexpression of the protein was detected in 105 (56.5%) out of the 186 gastric cancer tissues. Statistically, there was no significant relationship between the overexpression of UQCRFS1 and clinicopathologic parameters (P>0.05). In parallel, the overexpression of UQCRFS1 protein was confirmed in 6 (66.7%) of the 9 gastric cancer cell lines, and 12 (50.0%) of the 24 gastric cancer tissues by immunoblotting. Conclusions: These results suggest that the overexpression of UQCRFS1 gene may contribute to the development and/or progression of gastric cancer, and further supported that mitochondrial change may serve as a potential cancer biomarker.
Keywords
Stomach neoplasms; ArrayCGH; Immunohistochemistry; Amplification; Overexpression;
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