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UBC researcher discovers 'control room' that regulates immune responses

VANCOUVER, Canada -- The approximately 50 million people in the U.S. who suffer from autoimmune diseases like HIV/AIDS, multiple sclerosis, and arthritis, may soon be able to control their immune responses, thanks to a breakthrough discovery by a researcher at the University of British Columbia in Vancouver, Canada.

Wilfred Jefferies, a professor at UBC's Biotechnology Laboratory, has discovered and characterized the mechanics of a cellular pathway that triggers immune responses. He and his team have also uncovered a specialized cell substructure, or organelle, that dictates exactly how the immune system will be activated.

"This discovery opens the door to the immune system control room," says Jefferies, who is also a member of UBC's Biomedical Research Centre. "We've found a mechanism that appears to act like a dial it can turn immune system response up or down."

Jefferies believes that it will take about five years for scientists to use this information to create new therapies such as medication or vaccines to regulate immune responses in humans.

The findings have enormous implications for patients because treatment may be targeted by adjusting the "dial", says Jefferies. Immune responses may be increased to fight infection or reduced to help the body accept transplanted tissue or organs.

The work was recently published online in Nature Immunology and will be the topic of an editorial when the journal appears on newsstands in November.

The research findings can be used immediately to test exactly how the immune system responds to a variety of pathogenic organisms, including bacteria, viruses and tumours, says Jefferies, who is a member of UBC's departments of Microbiology and Immunology, Medical Genetics and Zoology.

Jefferies' research focuses on dendritic cells. A network of specialized cells, dendritic cells act as sentinels of the immune system, detecting and relaying information about illness-c
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Contact: Hilary Thomson
hilary.thomson@ubc.ca
604-822-2644
University of British Columbia
22-Oct-2003


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