CRMP5-associated GTPase (CRAG) Is a candidate driver gene for colorectal cancer carcinogenesis

Dai Shimizu, Takaaki Masuda, Kuniaki Sato, Yusuke Tsuruda, hajime otsu, Yohsuke Kuroda, Hidetoshi Eguchi, Yasuhiro Kodera, Koshi Mimori

Research output: Contribution to journalArticle

Abstract

Background/Aim: Certain chromosomal arms are clonally amplified in colorectal cancer (CRC) and may contain novel driver genes. The aim of this study was to identify a novel driver gene for colorectal cancer carcinogenesis on long arm of chromosome 7 and the clarify its biological function. Materials and Methods: We identified ArfGAP with GTPase domain, ankyrin repeat and PH domain 3 (AGAP3) as a putative driver gene using the CRC dataset in The Cancer Genome Atlas (TCGA). Biological functions of AGAP3 and CRMP5-associated GTPase (CRAG), a splicing variant of AGAP3, were explored by overexpression. AGAP3/CRAG expression in our cohort was examined by quantitative reverse transcription polymerase chain reaction. Clinical significance of AGAP3/CRAG expression in TCGA dataset, Gene Expression Omnibus datasets and our clinical cohort was evaluated. Results: AGAP3 expression was significantly increased in CRC and colorectal adenoma compared to normal tissue. CRAG overexpression up-regulated c-Jun expression, and significantly increased cell proliferation and colony formation capability. AGAP3 expression did not have a concordant association with patient prognosis among datasets. Conclusion: CRAG may contribute to development of CRC via activator protein 1 activation.

Original languageEnglish
Pages (from-to)99-106
Number of pages8
JournalAnticancer research
Volume39
Issue number1
DOIs
Publication statusPublished - Jan 1 2019

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GTP Phosphohydrolases
Colorectal Neoplasms
Carcinogenesis
Genes
Atlases
Genome
Ankyrin Repeat
Chromosomes, Human, Pair 7
Transcription Factor AP-1
Adenoma
Reverse Transcription
Neoplasms
Cell Proliferation
Gene Expression
Polymerase Chain Reaction
Datasets

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

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CRMP5-associated GTPase (CRAG) Is a candidate driver gene for colorectal cancer carcinogenesis. / Shimizu, Dai; Masuda, Takaaki; Sato, Kuniaki; Tsuruda, Yusuke; otsu, hajime; Kuroda, Yohsuke; Eguchi, Hidetoshi; Kodera, Yasuhiro; Mimori, Koshi.

In: Anticancer research, Vol. 39, No. 1, 01.01.2019, p. 99-106.

Research output: Contribution to journalArticle

Shimizu, Dai ; Masuda, Takaaki ; Sato, Kuniaki ; Tsuruda, Yusuke ; otsu, hajime ; Kuroda, Yohsuke ; Eguchi, Hidetoshi ; Kodera, Yasuhiro ; Mimori, Koshi. / CRMP5-associated GTPase (CRAG) Is a candidate driver gene for colorectal cancer carcinogenesis. In: Anticancer research. 2019 ; Vol. 39, No. 1. pp. 99-106.
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