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Quantification of Autoreactive Antibodies in Mice upon Experimental Autoimmune Encephalomyelitis
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Antigen specificity of clonally expanded and receptor edited cerebrospinal fluid B cells from patients with relapsing

Doris Lambracht-Washington1, Kevin C O'Connor, Elizabeth M Cameron

  • 1Department of Neurology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.

Journal of Neuroimmunology
|April 25, 2007
PubMed

We re-engineered the immunoglobulin rearrangements from clonally expanded CSF B cells of three Multiple Sclerosis patients as Fab fragments, and used three methods to test for their antigen (Ag) specificity. Nine out of ten Fab fragments were reactive to Myelin Basic Protein (MBP). The one Fab that did not react to MBP was a product of receptor editing. Two of the nine MBP reactive Fabs were also reactive to GFAP and CNPase, indicating that these clones were polyreactive. Targeting the mechanisms that allow these self-reactive B cells to reside in the CSF of MS patients may prove to be a potent immunotherapeutic strategy.

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