B-cell targeting: a novel approach to immune intervention today and tomorrow |
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Authors: | Dörner Thomas Lipsky Peter E |
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Affiliation: | Charite University Hospital Berlin and Deutsche Rheumaforschungszentrum, Chariteplatz 01, 10098 Berlin, Germany. thomas.doerner@charite.de |
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Abstract: | B cells and their products, antibodies, play an important role in the diagnosis and, in some instances, in the pathogenesis of many autoimmune diseases. Specific B-cell directed therapies are of recent interest as their impact on B-cell activity can influence a variety of autoimmune diseases. The development and introduction of rituximab, a depleting antibody targeting CD20+ B cells, and previously CD52-directed treatment with Campath-1h for the treatment of B-cell malignancies as well as rheumatoid arthritis have pioneered this therapeutic field. Other non-depleting strategies employ CD22 or B-cell activating factor/B lymphocyte stimulator and apoptosis-inducing ligand as targets and are under clinical investigation at present. Abnormalities of B-cell subsets have been identified by a number of independent groups which often represent characteristic patterns of disturbances of the human B-cell repertoire. However, the clinical value of specific B-cell subset targeting/depletion has not been addressed extensively. As such an approach may afford the possibility to avoid unnecessary adverse events related to depletion of non-pathogenic B-cell populations, B-cell subset targeting may have the capacity to enhance the benefit/risk ratio of B-cell immune intervention. |
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