Modulation of Caspase-Independent Cell Death Leads to Resensitization of Imatinib Mesylate-Resistant Cells

Posted by rob on March 31, 2009 under Uncategorized | Comments are off for this article

Imatinib mesylate is widely used for the treatment of patients with chronic myelogenous leukemia (CML). This compound is very efficient in killing Bcr-Abl–positive cells in a caspase-dependent manner. Nevertheless, several lines of evidence indicated that caspase-mediated cell death (i.e., apoptosis) is not the only type of death induced by imatinib. The goal of our study was to evaluate the importance of the newly described caspase-independent cell death (CID) in Bcr-Abl–positive cells. We established in several CML cell lines that imatinib, in conjunction with apoptosis, also induced CID. CID was shown to be as efficient as apoptosis in preventing CML cell proliferation and survival. We next investigated the potential implication of a recently identified mechanism used by can…

Modulation of caspase-independent cell death leads to resensitization of imatinib mesylate-resistant cells.

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Authors: Lavallard VJ, Pradelli LA, Paul A, Bénéteau M, Jacquel A, Auberger P, Ricci JE
Imatinib mesylate is widely used for the treatment of patients with chronic myelogenous leukemia (CML). This compound is very efficient in killing Bcr-Abl-positive cells in a caspase-dependent manner. Nevertheless, several lines of evidence indicated that caspase-mediated cell death (i.e., apoptosis) is not the only type of death induced by imatinib. The goal of our study was to evaluate the importance of the newly described caspase-independent cell death (CID) in Bcr-Abl-positive cells. We established in several CML cell lines that imatinib, in conjunction with apoptosis, also induced CID. CID was shown to be as efficient as apoptosis in preventing CML cell proliferation and survival. We …

Once-Daily Dasatinib for Treatment of Patients with Chronic Myeloid Leukemia (May).

Posted by rob on March 30, 2009 under Uncategorized | Comments are off for this article

CONCLUSIONS: Dasatinib 100 mg once daily has a more favorable risk to benefit assessment compared with the previous 70 mg twice-daily regimen and is now the recommended schedule for patients with CP CML.
PMID: 19336654 [PubMed - as supplied by publisher] (Source: The Annals of Pharmacotherapy)

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Drug Showed 90 Percent Kill Of Leukemic Stem Cells And Prolonged Survival In Mice With Resistant CML

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Data showing the ability of omacetaxine to kill leukemic stem cells in mouse models with drug-resistant chronic myelogenous leukemia (CML) are the subject of an advance online publication in the journal Leukemia, ChemGenex Pharmaceuticals Limited (ASX:CXS and NASDAQ:CXSP) has announced. The findings of this study provide new insights into the problem of minimal residual disease and may open the door to the development of a curative treatment strategy for some patients with CML. (Source: Biology / Biochemistry News From Medical News Today)

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