The new nanotechnology also can be applied to a variety of immune-mediated diseases including Type 1 diabetes, food allergies and airway allergies such as asthma. In MS, the immune system attacks the myelin membrane that insulates nerve cells in the brain, spinal cord and optic nerve. When the insulation is destroyed, electrical signals can't be effectively conducted, resulting in symptoms that range from mild limb numbness to paralysis or blindness. About 80 percent of MS patients are diagnosed with the relapsing remitting form of the disease.
The Northwestern nanotechnology does not suppress the entire immune system as do current therapies for MS, which make patients more susceptible to everyday infections and higher rates of cancer. Rather, when the nanoparticles are attached to myelin antigens and injected into the mice, the immune system is reset to normal. The immune system stops recognizing myelin as an alien invader and halts its attack on it. "This is a highly significant breakthrough in translational immunotherapy," said Stephen Miller, Judy Gugenheim Research Professor of Microbiology-Immunology at Northwestern University Feinberg School of Medicine. "The beauty of this new technology is it can be used in many immune-related diseases. We simply change the antigen that's delivered. The holy grail is to develop a therapy that is specific to the pathological immune response, in this case the body attacking myelin."
The nanoparticle was developed by Lonnie Shea, professor of chemical and biological engineering at Northwestern's McCormick School of Engineering and Applied Science. "This is a major breakthrough in nanotechnology, showing you can use it to regulate the immune system," he said.
MEDICA.de; Source: Northwestern University