Tumors use enzyme to recruit regulatory T-cells and suppress immun...(than 1 percent of the cells in a tumor o...),Health

Date:8/16/2007

than 1 percent of the cells in a tumor or its draining lymph node led MCG researchers to look for a population of powerful allies within the immune system that could explain the suppressive impact. Tregs seemed like a good choice. The 2003 paper by Italian scientists, followed by a 2006 paper that showed nave T-cells exposed to IDO differentiated into Tregs, helped cement that some sort of relationship existed, prompting MCG researchers to further explore the relationship in a tumor animal model.

It?s only been in the last year or two that people have begun to realize Tregs spend most of their time in a sort of resting state where they have the potential to be suppressive but are not at that moment, says Dr. Munn. That would make sense, because you dont want your immune system always shut off.

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Contact: Toni Baker tbaker@mcg.edu 706-721-4421 Medical College of Georgia Source:Eurekalert

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