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http://dx.doi.org/10.7314/APJCP.2015.16.8.3523

Promyelocytic Leukemia (PML) Gene Mutations may not Contribute to Gastric Adenocarcinoma Development  

Imani-Saber, Zeinab (Department of Medical Genetics, Shahid Beheshti University of Medical Sciences)
Yousefi-Razin, Ehsan (Department of Medical Genetics, Shahid Beheshti University of Medical Sciences)
Javaheri, Mona (Department of Medical Genetics, Shahid Beheshti University of Medical Sciences)
Mirfakhraie, Reza (Department of Medical Genetics, Shahid Beheshti University of Medical Sciences)
Motalleb, Gholamreza (Department of Biology, Faculty of Science, University of Zabol)
Ghafouri-Fard, Soudeh (Department of Medical Genetics, Shahid Beheshti University of Medical Sciences)
Publication Information
Asian Pacific Journal of Cancer Prevention / v.16, no.8, 2015 , pp. 3523-3525 More about this Journal
Abstract
Gastric cancer is the second most common cause of cancer death worldwide. Environmental as well as genetic factors have been shown to be involved in its genesis. Among genetic factors, loss of function of a tumor suppressive gene named promyelocytic leukemia (PML) has been demonstrated in gastric cancer. In order to cast light in the mechanism by which PML protein is under-expressed in gastric cancer cells, we analyzed all exons and intron-exon boundaries of PML gene in 50 formalin-fixed paraffin-embedded tissue blocks from gastric carcinoma tumors by means of PCR-SSCP and CSGE, with direct sequencing of abnormally shifted bands. We found a novel sequence variant of unknown significance localized in intron 5 in 3 samples (c.1398+84delA). We did not detect any deleterious mutations of the PML gene. This study shows that PML mutations may not contribute to gastric adenocarcinoma development. Post-translational modifications or protein degradation might be mechanisms by which PML is not expressed in gastric tumors.
Keywords
PML; mutation; gastric cancer;
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