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PMID: 12877673 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Phosphatase and tensin homologue phosphorylation in the C-terminal regulatory domain is frequently observed in acute myeloid leukaemia and associated with poor clinical outcome.

British journal of haematology ·Vol. 122 ·No. 3 ·2003-08-00 ·Pages 454-6

Cheong JW, Eom JI, Maeng HY, Lee ST, Hahn JS, Ko YW, Min YH

Abstract

Phosphorylation of PTEN (phosphatase and tensin homologue) affects PTEN protein stability and function. In this study, phosphorylated PTEN (pPTEN) was observed in 45 (73.8%) of 61 cases with acute myeloid leukaemia (AML). Phosphorylation of Akt and its downstream molecules [FKHR; Forkhead (Drosophila) homologue 1; and GSK-3beta; glycogen synthase kinase 3 beta] was significantly associated with pPTEN (P < 0.001). The complete remission rates were not different with respect to pPTEN, but overall survival was significantly shorter in patients with pPTEN (P < 0.05). Constitutive PTEN phosphorylation may add insight into the molecular pathogenesis of AML, and may be a new parameter for an unfavourable outcome.

MeSH Terms
Acute Disease Adolescent Adult Aged Blotting, Western DNA-Binding Proteins/metabolism Female Forkhead Box Protein O1 Forkhead Transcription Factors Glycogen Synthase Kinase 3/metabolism Glycogen Synthase Kinase 3 beta Humans Leukemia, Myeloid/metabolism,mortality Male Middle Aged Multivariate Analysis PTEN Phosphohydrolase Phosphoric Monoester Hydrolases/analysis Phosphorylation Prognosis Protein Serine-Threonine Kinases Proto-Oncogene Proteins/metabolism Proto-Oncogene Proteins c-akt Statistics, Nonparametric Transcription Factors/metabolism Tumor Suppressor Proteins/analysis
Chemicals
DNA-Binding Proteins FOXO1 protein, human Forkhead Box Protein O1 Forkhead Transcription Factors Proto-Oncogene Proteins Transcription Factors Tumor Suppressor Proteins AKT1 protein, human GSK3B protein, human Glycogen Synthase Kinase 3 beta Protein Serine-Threonine Kinases Proto-Oncogene Proteins c-akt Glycogen Synthase Kinase 3 Phosphoric Monoester Hydrolases PTEN Phosphohydrolase PTEN protein, human
Authors & Affiliations
7 authors, click to expand affiliations / ORCID
Cheong June-Won
Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
Eom Ju In
Maeng Ho-Young
Lee Seung Tae
Hahn Jee Sook
Ko Yun Woong
Min Yoo Hong
Article Info
Journal
British journal of haematology
Abbr.
Br J Haematol
ISSN
0007-1048
Published
2003-08-00
Pages
454-6
Language
English
Region
England
NLM ID
0372544
Subset
IM
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