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Towards more effective treatment for multiple myeloma
Date:1/9/2012

ells from patients. When used in animal studies with the proteasome inhibitor bortezomib, MAL3-101 significantly boosted its anti-myeloma effects. Dr. Batuman's team found that by targeting Hsp70 activity, the dosage of synergic agents such as bortezomib could be reduced without compromising their effectiveness. The ability to reduce dosage makes it possible to continue the use of drugs that are toxic at higher concentrations. The addition of new synergistic agents also enriches the treatment arsenal by reducing drug resistance.

"The results of our study are very encouraging," says Dr. Batuman. "While this is not a cure and it will be some time before the compound is developed as a drug, we believe that MAL3-101, when used synergistically with existing therapies, could reduce overall drug concentrations and avoid treatment resistance."

Dr. Batuman adds, "It is possible to speculate that MAL3-101 may also modulate development of the multiple myeloma cancer stem cell. The relapse of multiple myeloma in patients in whom complete remission had been achieved is currently thought to indicate the presence of treatment-resistant multiple myeloma cancer stem cells. At Downstate, a group effort is now geared towards identifying and targeting these cancer stem cells in multiple myeloma. The anti-myeloma effects of MAL3-101 could include inhibition of cancer stem cell development, since the Hsp-70 function is required in early plasma cell development. Our prediction is that antagonism of the Hsp-70 chaperone or chaperones by affecting non-redundant pathways could be effective in multiple myeloma treatment."


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Contact: Ron Najman
ron.najman@downstate.edu
718-270-2696
SUNY Downstate Medical Center
Source:Eurekalert

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