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PMID: 12124173 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

Inhibition of mutant FLT3 receptors in leukemia cells by the small molecule tyrosine kinase inhibitor PKC412.

Cancer cell ·Vol. 1 ·No. 5 ·2002-06-00 ·Pages 433-43

Weisberg E, Boulton C, Kelly LM, Manley P, Fabbro D, Meyer T, Gilliland DG, Griffin JD

Abstract

Constitutively activating FLT3 receptor mutations have been found in 35% of patients with acute myeloblastic leukemia (AML). Here we report the identification of a small molecule FLT3 tyrosine kinase inhibitor PKC412, which selectively induced G1 arrest and apoptosis of Ba/F3 cell lines expressing mutant FLT3 (IC(50) < 10 nM) by directly inhibiting the tyrosine kinase. Ba/F3-FLT3 cell lines made resistant to PKC412 demonstrated overexpression of mutant FLT3, confirming that FLT3 is the target of this drug. Finally, progressive leukemia was prevented in PKC412-treated Balb/c mice transplanted with marrow transduced with a FLT3-ITD-expressing retrovirus. PKC412 is a potent inhibitor of mutant FLT3 and is a candidate for testing as an antileukemia agent in AML patients with mutant FLT3 receptors.

MeSH Terms
Animals Antineoplastic Agents/pharmacology Apoptosis/drug effects Benzamides Bone Marrow Cells/enzymology,pathology Bone Marrow Transplantation Cell Cycle/drug effects Cell Division/drug effects Cell Transformation, Neoplastic Drug Resistance, Neoplasm Enzyme Inhibitors/pharmacology Flow Cytometry Humans Imatinib Mesylate Immunoblotting Interleukin-3/metabolism Leukemia, Myeloid, Acute/genetics,pathology,therapy Male Mice Mice, Inbred BALB C Mice, Nude Mutation Phosphorylation Piperazines Protein Kinase C/antagonists & inhibitors Proto-Oncogene Proteins/antagonists & inhibitors Pyrimidines/pharmacology Receptor Protein-Tyrosine Kinases/antagonists & inhibitors Staurosporine/analogs & derivatives,pharmacology Transfection Tumor Cells, Cultured/drug effects fms-Like Tyrosine Kinase 3
Chemicals
Antineoplastic Agents Benzamides Enzyme Inhibitors Interleukin-3 Piperazines Proto-Oncogene Proteins Pyrimidines Imatinib Mesylate FLT3 protein, human Flt3 protein, mouse Receptor Protein-Tyrosine Kinases fms-Like Tyrosine Kinase 3 Protein Kinase C Staurosporine midostaurin
Authors & Affiliations
8 authors, click to expand affiliations / ORCID
Weisberg Ellen
Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
Boulton Christina
Kelly Louise M
Manley Paul
Fabbro Doriano
Meyer Thomas
Gilliland D Gary
Griffin James D
Article Info
Journal
Cancer cell
Abbr.
Cancer Cell
ISSN
1535-6108
Published
2002-06-00
Pages
433-43
Language
English
Region
United States
NLM ID
101130617
Subset
IM
Grants
NCI NIH HHS · P01 CA66996 · United States
NIDDK NIH HHS · P01 DK50654 · United States
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