PI3K/AKT pathway activation in acute myeloid leukaemias is not associated with AKT1 pleckstrin homology domain mutation

Raoul Tibes, Steven M. Kornblau, Yihua Qiu, Spyro M. Mousses, Christiane Robbins, Tracy Moses, John D. Carpten

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Despite its' central role, the precise mechanisms of the phosphoinositide 3-kinase/Akt (PI3K)/Akt pathway activation in acute myeloid leukaemia (AML) have not been elucidated. Recently, a recurrent novel AKT1 pleckstrin homology domain (PHD) mutation leading to membrane translocation, constitutive AKT activation and leukaemia development in mice was described. To assess AKT1 PHD mutations in AML, we sequenced 57 specimens from 49 AML patients, all of whom showed PI3K/AKT pathway activation by analysis of total and phospho-protein expression for AKT, mTor, p70S6Kinase, S6ribosomal protein and PTEN. No mutations in AKT1 PHD were identified, making this mutation an unlikely cause of PI3K/AKT pathway activation in AML.

Original languageEnglish (US)
Pages (from-to)344-347
Number of pages4
JournalBritish journal of haematology
Volume140
Issue number3
DOIs
StatePublished - Feb 1 2008

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Keywords

  • Acute myeloid leukaemia
  • Mutation
  • Phosphoinositide 3-kinase/AKT
  • Protein phosphorylation
  • Signal transduction pathway

ASJC Scopus subject areas

  • Hematology

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