Abstract | PURPOSE: METHODS: We studied gene expression profiles in AML blasts exposed to AS602868 in order to better understand its mechanism of action. We analyzed the in vitro cytotoxicity of AS602868 alone or in combination with daunorubicin, etoposide or cytarabine. To document AS602868-induced IKK2 inhibition in fresh AML cells, a flow cytometry analysis of IκB was performed. Finally, the effect of AS602868 on gene expression in fresh AML cells was analyzed. RESULTS: The results show that AML cells are globally as sensitive to AS602868 as they are to cytarabine, with large interindividual variations. Combinations with conventional antileukemic agents showed enhanced cytotoxic activity in subsets of patients. IKK2 appeared to be effectively inhibited by 100 μM AS602868 in fresh leukemic cells. Gene expression profiling and gene ontology analyses identified several groups of genes induced/inhibited by exposure to AS602868 and/or exhibiting a correlation with sensitivity to this agent in vitro. Of note, the expression of several genes related to immune function was found to be significantly altered after exposure to AS602868. CONCLUSION: These data suggest that AS602868 is cytotoxic against fresh human AML blasts and provide insights regarding the mechanisms of cytotoxicity.
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Authors | Lars Petter Jordheim, Adriana Plesa, Michel Dreano, Emeline Cros-Perrial, Céline Keime, Stéphanie Herveau, Delphine Demangel, Julie A Vendrell, Charles Dumontet |
Journal | Cancer chemotherapy and pharmacology
(Cancer Chemother Pharmacol)
Vol. 68
Issue 1
Pg. 97-105
(Jul 2011)
ISSN: 1432-0843 [Electronic] Germany |
PMID | 20844879
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- AS602868
- Antineoplastic Agents
- I kappa B beta protein
- I-kappa B Proteins
- Pyrimidines
- Cytarabine
- Etoposide
- Daunorubicin
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Topics |
- Antineoplastic Agents
(pharmacology, toxicity)
- Antineoplastic Combined Chemotherapy Protocols
(pharmacology)
- Apoptosis
(drug effects)
- Cell Line, Tumor
- Cytarabine
(pharmacology)
- Daunorubicin
(pharmacology)
- Dose-Response Relationship, Drug
- Etoposide
(pharmacology)
- Gene Expression Profiling
- Humans
- I-kappa B Proteins
(metabolism)
- Leukemia, Myeloid, Acute
(drug therapy, genetics, pathology)
- Lymphocytes
(drug effects)
- Oligonucleotide Array Sequence Analysis
- Pyrimidines
(pharmacology, toxicity)
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