dGirdin a new player of Akt/PKB signaling in Drosophila melanogaster

Masamitsu Yamaguchi, Osamu Suyari, Rika Nagai, Masahide Takahashi

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A novel substrate of Akt/PKB designated as Girdin (griders of actin filaments) has been identified in mammals and characterized as an actin-binding protein. A Girdin-like protein has been identified in Drosophila, which has two isoforms, dGirdin PA and dGirdin PB. Knockdown of dGirdin in the Drosophila wing imaginal disc cells resulted in reduction of cell size and this was enhanced by half reduction of the Akt gene dose. Furthermore the dGirdin-knockdown wing disc cells exhibited severe disruption of actin filaments. From these in vivo analyses, we conclude that dGirdin is required for actin organization and regulation of appropriate cell size under control of the Akt signaling pathway. Human Girdin plays important roles in cancer progression and angiogenesis. Therefore Girdin and its interacting proteins could be potential pharmaceutical targets for cancer therapies and tumor angiogenesis. Possible use of the Drosophila Girdin model in understanding the mechanisms of cancer progression and in developing preventive and therapeutic strategies will be discussed.

Original languageEnglish
Pages (from-to)1164-1171
Number of pages8
JournalFrontiers in Bioscience
Issue number3
Publication statusPublished - 01-06-2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Biochemistry,Genetics and Molecular Biology
  • General Immunology and Microbiology


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