Expression screening of 17q12-21 amplicon reveals GRB7 as an ERBB2-dependent oncogene

Makoto Saito, Yukiko Kato, Emi Ito, Jiro Fujimoto, Kosuke Ishikawa, Ayano Doi, Kentaro Kumazawa, Atsuka Matsui, Shiori Takebe, Takaomi Ishida, Sakura Azuma, Hiromi Mochizuki, Yoshifumi Kawamura, Yuka Yanagisawa, Reiko Honma, Jun Ichi Imai, Hirokazu Ohbayashi, Naoki Goshima, Kentaro Semba*, Shinya Watanabe

*この研究の対応する著者

研究成果: Article査読

16 被引用数 (Scopus)

抄録

Gene amplification is a major genetic alteration in human cancers. Amplicons, amplified genomic regions, are believed to contain "driver" genes responsible for tumorigenesis. However, the significance of co-amplified genes has not been extensively studied. We have established an integrated analysis system of amplicons using retrovirus-mediated gene transfer coupled with a human full-length cDNA set. Applying this system to 17q12-21 amplicon observed in breast cancer, we identified GRB7 as a context-dependent oncogene, which modulates the ERBB2 signaling pathway through enhanced phosphorylation of ERBB2 and Akt. Our work provides an insight into the biological significance of gene amplification in human cancers.

本文言語English
ページ(範囲)1708-1714
ページ数7
ジャーナルFEBS Letters
586
12
DOI
出版ステータスPublished - 2012 6月 12

ASJC Scopus subject areas

  • 生物理学
  • 構造生物学
  • 生化学
  • 分子生物学
  • 遺伝学
  • 細胞生物学

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