Expression of SIRT1 and DBC1 in gastric adenocarcinoma

Youngran Kang, Woon Yong Jung, Hyunjoo Lee, Eunjung Lee Aeree Kim, Baek-Hui Kim

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29 Citations (Scopus)

Abstract

Background: Sirtuin 1 (SIRT1) and deleted in breast cancer 1 (DBC1) are known as tumor suppressor or promoter genes. This may be due to their diverse functions and interaction with other proteins. Gastric adenocarcinoma is one of the most common malignancies, but little is known about its carcinogenesis. Therefore, we investigated the association of immunohistochemical expression of SIRT1, DBC1, p53, and β-catenin and their variable clinicopathological characteristics. Methods: We obtained samples from 452 patients who underwent gastrectomy. Tissue microarray blocks were constructed and immonohistochemical staining was performed. Results: Expression of DBC1 and SIRT1 was associated with lower histologic grade, intestinal type of Lauren classification, and lower pT (p<0.001) and pN stage (DBC1, p=0.002; SIRT1, p<0.001). Association between absence of lymphatic invasion, and SIRT1 (p=0.001) and DBC1 (p=0.004) was observed. Cytoplasmic β-catenin expression was associated with lower histologic grade, pT, pN, tumor-node-metastasis (TNM) stage, DBC1 (p<0.001), and SIRT1 (p=0.001). Expression of SIRT1 and DBC1 was not associated with p53 (p=0.063 and p=0.060). DBC1 was an independent good prognostic factor in multivariate analysis (p=0.012). Conclusions: SIRC1 and DBC1 can be considered to be good prognostic factors in gastric adenocarcinoma.

Original languageEnglish
Pages (from-to)523-531
Number of pages9
JournalKorean Journal of Pathology
Volume46
Issue number6
DOIs
Publication statusPublished - 2012 Dec 1

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Keywords

  • Adenocarcinoma
  • DBC1 protein
  • Human
  • SIRT1 protein
  • Stomach

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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