Abstract
EXPERIMENTAL autoimmune encephalomyelitis (EAE) is an inflammatory condition of the central nervous system with similarities to multiple sclerosis1,2. In both diseases, circulating leukocytes penetrate the blood-brain barrier and damage myelin, resulting in impaired nerve conduction and paralysis3–5. We sought to identify the adhesion receptors that mediate the attachment of circulating leukocytes to inflamed brain endothelium in EAE, because this interaction is the first step in leukocyte entry into the central nervous system. Using an in vitro adhesion assay on tissue sections, we found that lymphocytes and monocytes bound selectively to inflamed EAE brain vessels. Binding was inhibited by antibodies against the integrin molecule α4βl, but not by antibodies against numerous other adhesion receptors. When tested in vivo, anti-α4 integrin effectively prevented the accumulation of leukocytes in the central nervous system and the development of EAE. Thus, therapies designed to interfere with α4βl integrin may be useful in treating inflammatory diseases of the central nervous system, such as multiple sclerosis.
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Yednock, T., Cannon, C., Fritz, L. et al. Prevention of experimental autoimmune encephalomyelitis by antibodies against α4βl integrin. Nature 356, 63–66 (1992). https://doi.org/10.1038/356063a0
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DOI: https://doi.org/10.1038/356063a0
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