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NCI Cancer Center News

Researchers discover how some prostate tumors resist treatment -- and how it might be fixed

  • Posted: March 19, 2013

Hormonal therapies can help control advanced prostate cancer for a time. However, for most men, at some point their prostate cancer eventually stops responding to further hormonal treatment. This stage of the disease is called androgen-insensitive or castration-resistant prostate cancer. In a study published March 18 in Cancer Cell, a team led by researchers at Sanford-Burnham Medical Research Institute found a mechanism at play in androgen-insensitive cells that enables them to survive treatment. They discovered that a protein called Siah2 keeps a portion of androgen receptors constantly active in these prostate cancer cells. Androgen receptors—sensors that receive and respond to the hormone androgen—play a critical role in prostate cancer development and progression.

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NCI cancer centers logoAmong the research institutions NCI funds across the United States, it currently designates 67 as Cancer Centers. Largely based in research universities, these facilities are home to many of the NCI-supported scientists who conduct a wide range of intense, laboratory research into cancer’s origins and development. The Cancer Centers Program also focuses on trans-disciplinary research, including population science and clinical research. The centers’ research results are often at the forefront of studies in the cancer field.