Tag Archives: Science Translational Medicine

Patients’ own stem cells may protect against toxins of chemotherapy

Chemotherapy saves lives, but it also kills healthy tissue like bone marrow. According to a new study involving three patients with glioblastoma, a deadly cancer of the brain, stem cells from cancer patients’ own blood may protect their bone marrow from the toxic effects of treatment.

Glioblastomas often carry an active form of a gene called MGMT, which is a DNA repair enzyme that protects the cancer cells against chemotherapy. To overcome that protective effect, doctors use benzylguanine, a drug that blocks MGMT – but that drug also makes bone marrow and blood cells vulnerable. For this study, scientists at Fred Hutchinson
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leukemias arise from changes that accumulate in blood stem cells

Imagine that a police bomb squad comes upon a diabolically designed bomb controlled by a tangled mass of different wires, lights and switches, some of which have a real function while others are decoys. The police don’t know how to begin defusing the bomb because they don’t know which parts are important. Then imagine the police discover the bomb-making factory and are able to see hundreds of these bombs at various stages of construction. With this information, they can reconstruct how the bomb was put together, and therefore how to disarm it.

For a team of researchers at
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