Several FDA-Approved Anti-Cancer Drugs Induce Stem Cell Tumors, Per...

Using a new approach to systematically test chemotherapy drugs in an unusual animal model, a research team led by University of Massachusetts Amherst molecular biologist Michele Markstein, with Norbert Perrimon at Harvard Medical School, report that several have a serious side effect: Inducing hyper proliferation in stem cells that could lead to tumor recurrence. Markstein says, “We discovered that several chemotherapeutics that stop fast growing tumors have the opposite effect on stem cells in the same animal, causing them to divide too rapidly. This was a surprise, because it showed that the same drug could have opposite actions on cells in the same animal: Suppressing tumor growth on one cell population while initiating growth in another.


Michele Markstein

Tags: chemotherapy, tumor growth side effect

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