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. 2014 Aug;31(6):727-33.
doi: 10.1007/s10585-014-9663-4. Epub 2014 Jun 27.

ADRM1 gene amplification is a candidate driver for metastatic gastric cancers

Seok Hoon Jang  1 , Jun Won Park, Hyo Rim Kim, Je Kyung Seong, Hark Kyun Kim
Affiliations

ADRM1 gene amplification is a candidate driver for metastatic gastric cancers

Seok Hoon Jang et al. Clin Exp Metastasis. 2014 Aug.

Abstract

We searched for candidate target genes in metastatic gastric cancer, using comparative genomic hybridization (CGH) and mRNA expression array analysis of endoscopic biopsy samples collected from 32 patients. Recurrent amplicons included 17q21.2 (36,569,293-37,307,055), 8q24.13-q24.21 (126,357,475-130,159,285), and 20q13.33 (60,211,249-61,382,787). In this paper, we focused on the 1.1-Mb genomic region containing 24 genes in chromosome 20q13.33 (from 60,211,249 to 61,382,787), the third most frequent amplicon that was amplified in three of 32 patients (9.4 %), with log2 tumor/reference ratios ranging from 0.6 to 1.5. Of three genes in the 20q13.33 amplicon, ADRM1 was chosen for functional analyses. ADRM1 knockdown suppressed the proliferation of two human gastric cancer cells, SNU-601 and SNU-216. Overexpression of Adrm1 promoted cell proliferation of conditionally-immortalized, mouse ImSt gastric epithelial cells, with increased S1 phase fraction and decreased expression of p21(Cip1). These results collectively indicate that ADRM1 promoted gastric epithelial cell proliferation by cell cycle progression. Therefore, ADRM1 is a candidate target gene in the chromosome 20q13.33 amplicon that may possibly be linked to development of gastric cancer.

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