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J Mol Med (Berl). 1999 Sep;77(9):656-65.

Forkhead transcription factors: new insights into protein kinase B (c-akt) signaling.

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  • 1Center for Biomedical Genetics, University of Utrecht, The Netherlands.

Abstract

The proto-oncogene protein kinase B (PKB), also known as c-Akt, is a central player in a signaling pathway of which many components have been linked to tumorigenesis. Active forms of PKB as well as of its upstream activator phosphatidylinositol 3-kinase (PI3K) have been found to be responsible for the transforming activities of certain viruses, and the negative regulator of this pathway, PTEN, is a tumor suppressor. The identification of particular downstream targets of PKB has provided us with new insights into the possible mechanism of PI3K/PKB-mediated tumorigenicity. Recently a subfamily of Forkhead transcription factors was identified as additional targets for PI3K/PKB signaling. This review discusses the studies that have led to this conclusion and the possible implications of this finding for our understanding of how PI3K/PKB activity could lead to oncogenesis.

PMID:
10569203
[PubMed - indexed for MEDLINE]
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