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A new target for cancer drug development
Date:6/17/2013

nstrated that targeting the SALL4 protein with druglike molecules could halt tumor growth. "The pharmaceutical companies decided that if it is not a kinase and it is not a cell surface molecule, then it is 'undruggable,' " Tenen said. "To me, if you say anything is 'undoable,' you are limiting yourself as a biomedical scientist."

Earlier this year, Tenen's co-author, HSCI-affiliated faculty member Li Chai, a Harvard Medical School assistant professor of pathology at Brigham and Women's Hospital, published a paper in the journal Blood, reporting that a SALL4 inhibitor has similar treatment potential in leukemia cells.

Chai took blood samples from patients with acute myeloid leukemia, treated the leukemic cells with the inhibitor that interferes with SALL4 protein activity, and then transplanted the blood into mice. The result was a gradual regression of the same cancer in mice.

"I am excited about being on the front line of this new drug development," Chai said. "As a physician-scientist, if I can find a new class of drug that has very low toxicity to normal tissues, my patients can have a better quality of life."

Chai and Tenen are now working with HSCI Executive Committee member Lee Rubin, the Harvard Institute of Chemistry and Cell Biology, and James Bradner of Dana-Farber Cancer Institute, another HSCI-affiliated faculty member, to overcome the technical challenges of drug development and demonstrate the potential of SALL4 interference to treat other forms of cancer.

"I think as academics, we seek to engage drug companies because they can do these types of things better than we can," Tenen said. "But, also as an academic, I want to go after the important biologic targets that are not being sought after by the typical drug company because if we do not, who will?"


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Contact: B. D. Colen
bd_colen@harvard.edu
617-495-7821
Harvard University
Source:Eurekalert

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