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Brazilian Journal of Medical and Biological Research

Print version ISSN 0100-879XOn-line version ISSN 1414-431X


CARDOSO, B.A. et al. Aberrant signaling in T-cell acute lymphoblastic leukemia: biological and therapeutic implications. Braz J Med Biol Res [online]. 2008, vol.41, n.5, pp.344-350.  Epub Apr 30, 2008. ISSN 1414-431X.

T-cell acute lymphoblastic leukemia (T-ALL) is a biologically heterogeneous disease with respect to phenotype, gene expression profile and activation of particular intracellular signaling pathways. Despite very significant improvements, current therapeutic regimens still fail to cure a portion of the patients and frequently implicate the use of aggressive protocols with long-term side effects. In this review, we focused on how deregulation of critical signaling pathways, in particular Notch, PI3K/Akt, MAPK, Jak/STAT and TGF-ß, may contribute to T-ALL. Identifying the alterations that affect intracellular pathways that regulate cell cycle and apoptosis is essential to understanding the biology of this malignancy, to define more effective markers for the correct stratification of patients into appropriate therapeutic regimens and to identify novel targets for the development of specific, less detrimental therapies for T-ALL.

Keywords : T-cell acute lymphoblastic leukemia; Notch; PI3K/Akt; MAPK; Jak/STAT; TGF-ß.

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