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Moffitt Cancer Center researchers use new tool to counter multiple myeloma drug resistance
Date:9/9/2011

TAMPA, Fla. (Sept. 9, 2011) "Acquired drug resistance" (ADR) is a major problem encountered in treating some forms of cancer. The ability to monitor the proteins involved in drug resistance has been a hurdle facing cancer researchers. However, a team of researchers at Moffitt Cancer Center, and colleagues, are pioneering promising research utilizing a monitoring technology that could provide a better understanding of ADR and assist in clinical decision-making for developing individualized patient treatments for multiple myeloma. The technique has potentially broader applications to other types of cancer as well.

Their research results are published in the October issue of Molecular and Cellular Proteomics.

"Multiple myeloma is an incurable malignancy in the bone marrow," said John M. Koomen, Ph.D., assistant member in Molecular Oncology and Experimental Therapeutics and scientific director of Moffitt's Proteomics Core Facility. "While patients with multiple myeloma initially respond to chemotherapy, they eventually develop drug resistance from a variety of factors. We want to be able to detect acquired drug resistance, so that we can change the therapeutic regimen to meet the needs of the patient."

The research team has employed a method called Liquid Chromatography Multiple Reaction Monitoring (LC-MRM) to monitor proteins determined to be involved in acquired drug resistance. This was based on the prior myeloma research conducted at Moffitt by William S. Dalton, Ph.D., M.D., Moffitt's CEO and center director, and colleagues.

Among the factors in ADR is an alteration in the "apoptopic machinery" of cells. Apoptosis, or programmed cell death, is determined by the interaction of anti-apoptosis and pro-apoptosis proteins in response to both external and internal stimuli. This interaction is known to play a role in ADR.

"Being able to monitor proteins is a major step in understanding multiple myeloma biology and
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Contact: Michelle Foley
Michelle.Foley@moffitt.org
813-745-1505
H. Lee Moffitt Cancer Center & Research Institute
Source:Eurekalert

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