Chemotherapy might backfire in some cancer patients.
Scientists at the Fred Hutchinson Cancer Research Center in Seattle say that chemotherapy might prompt tumors to emit a substance that helps maintain malignancy and boost resistance to drug therapy.
Researchers tested a form of chemotherapy on prostate cancer tissues and found that healthy cells damaged by the cancer therapy secreted more of a protein which seems to boost the survival of cancer cells.
The findings were later confirmed in breast and ovarian tumors. The study appears in the latest journal, Nature Medicine.
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