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Autoimmune Response in Multiple Sclerosis
July 13, 2007 at 4:50 PM
Genetics & Stem Cells News
Myelin basic protein (MBP) is a major component of the myelin sheath and when used as an antigen will induce experimental autoimmune encephalitis (EAE) in mice, which is used as an animal model of human MS.
Interestingly, myelin-specific T cells are found in both healthy individuals as well as patients with MS, thus researchers have been working to determine what specific characteristic of these destructive T cells is dominant in driving the development of EAE/MS.
In a study appearing online on July 12 in advance of publication in the August print issue of the Journal of Clinical Investigation, Eli Sercarz and colleagues from the Torrey Pines Institute for Molecular Studies immunized mice with an epitope of MBP known as Ac19, which resulted in a single episode of EAE in these animals, followed by recovery and resistance to any reinduction of disease.
The authors then went on to characterize the Ac19specific T cells present during the induction, onset, and recovery from disease. They identified two distinct subsets of T cells, or clonotypes, soon after immunization and prior to disease onset: BV8S2/BJ2S7 and BV16/BJ2S5.
The BV8S2/BJ2S7 clonotype was found in far greater excess, disappeared with disease recovery, and was found to transfer disease to other healthy mice.
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More News on: Chemotherapy, Chemotherapy Drugs, Multiple Sclerosis, Myasthenia Gravis, Vitiligo, Autoimmune Disorders, Wegeners Granulomatosis, Microscopic Polyangiitis
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