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La Jolla Institute identifies molecular switch enabling immune cells to better fight disease
Date:1/20/2013

ortant step to learning how to manipulate them in disease," he said, noting it could lead to novel approaches "either to turn these cells off in autoimmune disease or turn them on in infectious diseases."

He added that the finding could also have important implications in cancer. "We need all of the cytolytic machinery that we can get to try to destroy cancers," he said. "If we can learn to turn them on, I think it's reasonable to believe that these cytolytic T cells can play an important role in controlling cancer."

The findings were published today in Nature Immunology in a paper entitled "Transcriptional reprogramming of mature CD4 helper T cells generates distinct MHC class II-restricted cytotoxic T lymphocytes." Dr. Cheroutre is co-senior author on the study together with Dr. Ichiro Taniuchi of the RIKEN Research Center for Allergy and Immunology in Yokohama, Kanagawa, Japan. First authors on the paper are: Mohammad Mushtaq Husain, Ph.D., of the La Jolla Institute; Daniel Mucida, Ph.D., formerly of the La Jolla Institute, now at Rockefeller University; Femke van Wijk, Ph.D., formerly of the La Jolla Institute, now at the University Medical Center Utrecht, The Netherlands, and Sawako Muroi, of the RIKEN Institute.

Mitchell Kronenberg, Ph.D., La Jolla Institute president & chief scientific officer, said the study reflects the very successful collaboration between the La Jolla Institute and RIKEN in Japan, which have joined efforts on a number of projects over the years.

In the study, the researchers found that a certain transcription factor, which are molecules in the cell nucleus that control the activity of cells, continually suppresses the killer T cell lineage in helper T cells. Using mice, the team showed that turning off this transcription factor (ThPOK) enabled the helper cells in the body's peripheral areas, like the blood, spleen and the intestine, to override their original programming and to become killer
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Contact: Bonnie Ward
contact@liai.org
619-303-3160
La Jolla Institute for Allergy and Immunology
Source:Eurekalert

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