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Alzheimer's disease immunotherapy: From in vitro amyloid immunomodulation to in vivo vaccination

Alzheimer's disease immunotherapy: From in vitro amyloid immunomodulation to in vivo vaccination Site-directed antibodies which modulate conformation of amyloid-β peptide (Aβ) became the theoretical basis of the immunological approach for treatment of Alzheimer's disease (AD). Indeed, antibodies towards the EFRH sequence, located between amino acids 3-6 of the N-terminal region of Aβ, found to be a key position in modulation of Aβ conformation, prevent formation of fibrillar Aβ and dissolve already formed amyloid plaques. The performance of anti-Aβ antibodies in transgenic mice models of AD showed they are delivered to the central nervous system (CNS), preventing and/or dissolving Aβ. Moreover, these antibodies protected the mice from learning and age-related memory deficits. Development of such antibodies via active and/or passive immunization against Aβ peptide fragments has been proposed for AD immunotherapeutic strategies. Experimental active immunization with fibrillar Aβ 1-42 in hu-mans was stopped in phase II clinical trials due to unexpected neuroinflammatory manifestations. In spite of the fact that it will take considerable effort to establish a suitable immunization procedure, these results clearly strengthen the hypothesis that Aβ plays a central role in AD, stimulating a new area for development of Alzheimer's immunotherapeutics. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Alzheimer's Disease IOS Press

Alzheimer's disease immunotherapy: From in vitro amyloid immunomodulation to in vivo vaccination

Journal of Alzheimer's Disease , Volume 9 (0) – Jan 1, 2006

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Publisher
IOS Press
Copyright
Copyright © 2006 by IOS Press, Inc
ISSN
1387-2877
eISSN
1875-8908
Publisher site
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Abstract

Site-directed antibodies which modulate conformation of amyloid-β peptide (Aβ) became the theoretical basis of the immunological approach for treatment of Alzheimer's disease (AD). Indeed, antibodies towards the EFRH sequence, located between amino acids 3-6 of the N-terminal region of Aβ, found to be a key position in modulation of Aβ conformation, prevent formation of fibrillar Aβ and dissolve already formed amyloid plaques. The performance of anti-Aβ antibodies in transgenic mice models of AD showed they are delivered to the central nervous system (CNS), preventing and/or dissolving Aβ. Moreover, these antibodies protected the mice from learning and age-related memory deficits. Development of such antibodies via active and/or passive immunization against Aβ peptide fragments has been proposed for AD immunotherapeutic strategies. Experimental active immunization with fibrillar Aβ 1-42 in hu-mans was stopped in phase II clinical trials due to unexpected neuroinflammatory manifestations. In spite of the fact that it will take considerable effort to establish a suitable immunization procedure, these results clearly strengthen the hypothesis that Aβ plays a central role in AD, stimulating a new area for development of Alzheimer's immunotherapeutics.

Journal

Journal of Alzheimer's DiseaseIOS Press

Published: Jan 1, 2006

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