Journal of Gastric Cancer

  • 제10권3호
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  • Pages.91-98
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  • 2010
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  • 2093-582X(pISSN)
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  • 2093-5641(eISSN)
대한위암학회 (The Korean Gastric Cancer Association)
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Genetic and Expression Analysis of the SIRT1 Gene in Gastric Cancers

  • Zhang, Cao (Department of Pathology, The Catholic University of Korea, School of Medicine) ;
  • Song, Jae-Hwi (Department of Pathology, The Catholic University of Korea, School of Medicine) ;
  • Kang, Young-Whi (Department of Pathology, The Catholic University of Korea, School of Medicine) ;
  • Yoon, Jung-Hwan (Department of Pathology, The Catholic University of Korea, School of Medicine) ;
  • Nam, Suk-Woo (Department of Pathology, The Catholic University of Korea, School of Medicine) ;
  • Lee, Jung-Young (Department of Pathology, The Catholic University of Korea, School of Medicine) ;
  • Park, Won-Sang (Department of Pathology, The Catholic University of Korea, School of Medicine)
  • 투고 : 2010.06.04
  • 심사 : 2010.08.30
  • 발행 : 2010.09.30
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초록

Purpose: Silent mating-type information regulation 2 homologue 1 (SIRT1) is a nicotinamide adenine dinucleotide-dependent deacetylase. SIRT1 plays an important role in the regulation of cell death/survival and stress response in mammals. The aim of this study was to investigate whether the SIRT1 gene is involved in the development or progression of gastric cancers. Materials and Methods: SIRT1 and p53 genes in 86 gastric cancers were examined for genetic alterations by PCR-single strand conformation polymorphism sequencing, as well as SIRT1 protein expression in 170 gastric cancers by immunohistochemistry. Results: In the genetic analysis, we found SIRT1 and p53 mutations in two and 12 cases, respectively. Two missense mutations, c.599 C>T (T200I) and c.1258 G>A (E420K), were detected in the SIRT1 gene coding region. The SIRT1 and p53 mutation were found in mutually exclusive gastric cancers. The immunohistochemistry revealed that SIRT1 overexpression was found in 95 (55.9%) of 170 gastric cancers. Altered SIRT1 expression was not statistically associated with clinicopathological parameters, including tumor differentiation, location, lymph node metastasis, or p53 expression. Two cases with an SIRT1 mutation showed increased SIRT1 expression. Conclusions: These results suggest that genetic alterations and overexpression of the SIRT1 gene may contribute to gastric cancer development.

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피인용 문헌

  1. Sirt7 promotes gastric cancer growth and inhibits apoptosis by epigenetically inhibiting miR-34a vol.5, pp.None, 2010, https://doi.org/10.1038/srep09787