Journal
INTERNATIONAL JOURNAL OF GYNECOLOGICAL CANCER
Volume 17, Issue 4, Pages 764-770Publisher
BMJ PUBLISHING GROUP
DOI: 10.1111/j.1525-1438.2006.00861.x
Keywords
immune escape; ovarian cancer; regulatory T cells; targeted therapy; tumor immunology
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Regulatory T cells (T-reg), also termed suppressor T cells, control self-reactive T cells in the periphery, thereby conferring protection against immunologic self-destruction. While T-reg are essential for the prevention of autoimmunity, they also inhibit immune responses against tumor antigens. This is corroborated by an increased mortality rate associated with the presence of a high number of intratumoral T-reg. Tumor infiltration by non-T-reg, on the other hand, is predictive for a substantially longer patient survival. These clinical data suggest that ovarian cancer patients can spontaneously mount effective antitumor immune responses that are undermined by T-reg-mediated tolerization. The present article reviews clinical and experimental findings on T-reg in ovarian cancer, with special regard to potential therapeutic implications, which may result from the existing evidence.
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