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Study of cancer cell metabolism yields new insights on leukemia
Date:1/17/2013

University of Rochester Medical Center scientists have proposed a new reason why acute myeloid leukemia, one of the most aggressive cancers, is so difficult to cure: a subset of cells that drive the disease appear to have a much slower metabolism than most other tumors cells.

The slower metabolism protects leukemia cells in many important ways and allows them to survive better but the team also found an experimental drug tailored to this unique metabolic status and has begun testing its ability to attack the disease, URMC researchers report in the Jan. 17, 2013, online edition of Cell Stem Cell.

As a result, the study's corresponding author, Craig T. Jordan, Ph.D., is working on forming a partnership with a drug-maker to conduct further testing in this arena. The compound under laboratory study has already been used in clinical trials.

"Targeting metabolism of leukemia stem cells is a unique approach that we believe has the potential to be broadly applied to several forms of leukemia," said Jordan, the Philip and Marilyn Wehrheim Professor at the James P. Wilmot Cancer Center at URMC. "An exciting part of our work is that because we've identified drugs that are being developed for clinical use, we hope there is significant potential to improve the care of leukemia patients relatively soon."

Lead investigator Eleni Lagadinou, M.D., Ph.D., a post-doctoral fellow in Jordan's laboratory, said that when the team discovered that the metabolism of leukemia stem cells was so different from the rest of the tumor cells, they focused their efforts on exactly how that process works.

They found that leukemia stem cells generate all the energy they need in a cellular powerhouse called the mitochondrion, by way of a single process, known as oxidative phosphorylation. In contrast, other cancer cells and normal stem cells also rely on a second fuel source, known as glycolysis, to generate energy.

With this new information, researchers then explor
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Contact: Leslie Orr
Leslie_Orr@urmc.rochester.edu
University of Rochester Medical Center
Source:Eurekalert

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