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Protein Crucial for Development of Immune Cells That are Key to Fighting Cancer

by Anjali Aryamvally on December 12, 2017 at 1:12 PM
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Protein Crucial for Development of Immune Cells That are Key to Fighting Cancer

A new study has identified a promising new strategy to program the immune system to meet the pathogen or malignancy in the tissues where they first pose a threat. The study published in Nature, was conducted by a research team at the University of California San Diego and their colleagues

A multidisciplinary team led by Justin Milner, a postdoctoral researcher in molecular biologist Ananda Goldrath's laboratory, uncovered a novel function for a protein known as "Runx3" that is key to the development of killer T cells--immune cells important for fighting infections and cancer. The research team discovered similarities shared by T cells in infected tissues and tumors, and leveraged this finding to enhance killer T cell abundance in tumors, which was driven by Runx3.

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"At this time, we are seeing great promise in treating cancer stemming from approaches that exploit the immune system to target tumor cells and our work describes a new tool for directing the immune system into the right place where it can do its job," said Goldrath, the chair of the Section of Molecular Biology in the Division of Biological Sciences.

Runx3 has been known for its contributions to immune cell development but the researchers found a new therapeutic role for it. Their research in mice demonstrated Runx3 could program killer T cells to locate to and persist in infected tissues or tumors, helping to eradicate infections or slow growth of malignancies.
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"We uncovered an unappreciated function for this molecule in setting up a frontline of defense in tissues throughout the body," said Goldrath. "It's really a repurposing of a protein used in development to regulate the functional properties of the immune system."

The researchers believe Runx3, if properly directed, could be combined with other approaches to help T cells recognize and destroy tumor cells and enhance vaccine efficacy.



Source: Eurekalert
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