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RATIONALE: Studying the effects of lestaurtinib with or without chemotherapy in cell samples from patients with cancer in the laboratory may help doctors learn more about the effects of this treatment on cancer cells. It may also help doctors identify biomarkers related to cancer.
PURPOSE: This research study is studying lestaurtinib with or with chemotherapy in samples from young patients with leukemia.
- Determine the potential of lestaurtinib with or without chemotherapy agents in treating samples from infants with leukemia.
- Determine whether FLT3 protein expression level and/or activation and sensitivity to lestaurtinib differ between subgroups of infants with leukemia.
- Determine whether lestaurtinib activates STAT5, AKT, and RAS-MAPK and other pathways.
- Determine whether lestaurtinib can synergize with other chemotherapy agents kill infant leukemia cells.
OUTLINE: This is a multicenter study.
Cryopreserved specimens are studied in vitro with lestaurtinib with or without chemotherapy agents. Samples are analyzed for FLT3 protein expression and/or activation; sensitivity to lestaurtinib with or without chemotherapy agents; and activation of STAT, AKT, and RAS-MAPK and other pathways by western blot. The most effective treatment from this study is then validated in vivo in a NOD/SCID xenograft model.
gene expression analysis, protein expression analysis, western blotting, laboratory biomarker analysis, pharmacological study
Not yet recruiting
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:12:41-0400
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RATIONALE: Studying the genes and proteins expressed in tissue samples from patients with cancer may help doctors identify biomarkers related to cancer. PURPOSE: This laboratory study is ...
RATIONALE: Studying the proteins expressed in samples of tumor tissue from patients with cancer may help doctors identify and learn more about biomarkers related to cancer. It may also hel...
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A method that is derived from western blotting (BLOTTING, WESTERN) and is used to detect protein-protein interactions. The blotted proteins are probed with a non-antibody protein which can then be tagged with a labeled antibody.
A method that is used to detect DNA-protein interactions. Proteins are separated by electrophoresis and blotted onto a nitrocellulose membrane similar to Western blotting (BLOTTING, WESTERN) but the proteins are identified when they bind labeled DNA PROBES (as with Southern blotting (BLOTTING, SOUTHERN)) instead of antibodies.
MOLECULAR BIOLOGY techniques used in the diagnosis of disease. Included are such techniques as IN SITU HYBRIDIZATION of chromosomes for CYTOGENETIC ANALYSIS; OLIGONUCLEOTIDE ARRAY SEQUENCE ANALYSIS of gene expression patterns in disease states; identification of pathogenic organisms by analysis of species specific DNA sequences; and detection of mutations with POLYMERASE CHAIN REACTION.
A form of gene interaction whereby the expression of one gene interferes with or masks the expression of a different gene or genes. Genes whose expression interferes with or masks the effects of other genes are said to be epistatic to the effected genes. Genes whose expression is affected (blocked or masked) are hypostatic to the interfering genes.
The expression of a gene in an abnormal place, or at an abnormal time in an organism. Ectopic Gene Expression is often induced artificially by genetic techniques.
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