Originally published December 3 2005
Scientists observe how T-cells talk with one another
by Mike Adams, the Health Ranger, NaturalNews Editor
Michael L. Dustin, Ph.D.,of the NYU School of Medicine, led researchers in a study of how immune cells communicate to respond to an infection.
In a new study scientists at New York University School of Medicine and the University of California, Berkeley, report that they have observed the exchange of information between immune cells that is required to spark a body wide response to infection.
"This is the first time that anyone has been able to physically manipulate the immunological synapse and measure the effect on T cell signaling," says Michael L. Dustin, Ph.D., the Irene Diamond Associate Professor of Immunology and Associate Professor of Pathology at NYU School of Medicine, and one of the lead authors of the study.
The research by Dr. Dustin and Jay T. Groves of University of California, Berkeley, and their colleagues is a fusion of biology and nanotechnology---devices at the molecular scale.
The study sheds new light on the workings of T cells, the body's most specific and potent line of defense against viruses, bacteria, and other pathogens, says Dr. Dustin who is also an investigator in the molecular pathogenesis program at NYU's Skirball Institute of Biomolecular Medicine.
The study, published in the November 18, 2005, issue of Science, reveals how T cells analyze and react to the signals of infection at the immunological synapse.
Every T cell wears a unique molecule, called a T cell antigen receptor, on its surface that it uses to detect pieces of foreign proteins called antigens.
Once a T cell's antigen receptor finds an antigen match, the T cell forms an immunological synapse with a dendritic cell through which it queries the dendritic cell for additional information about the antigen and its source in the body.
"We locked the receptors in the periphery and saw enhanced signaling over a prolonged period of time.
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