Back to Journals » ImmunoTargets and Therapy » Volume 3

Immunotherapy for the treatment of Alzheimer's disease: amyloid-β or tau, which is the right target?

Authors Castillo-Carranza D, Guerrero-Muñoz M, Kayed R

Received 25 September 2013

Accepted for publication 26 November 2013

Published 27 December 2013 Volume 2014:3 Pages 19—28


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Diana L Castillo-Carranza,1,2 Marcos J Guerrero-Muñoz,1,2 Rakez Kayed1–3

1Mitchell Center for Neurodegenerative Diseases, 2Departments of Neurology, Neuroscience, and Cell Biology, 3Sealy Center for Vaccine Development, University of Texas Medical Branch, Galveston, TX, USA

Abstract: Alzheimer's disease (AD) is characterized by the presence of amyloid plaques composed mainly of amyloid-β (Aβ) protein. Overproduction or slow clearance of Aβ initiates a cascade of pathologic events that may lead to formation of neurofibrillary tangles, neuronal cell death, and dementia. Although immunotherapy in animal models has been demonstrated to be successful at removing plaques or prefibrillar forms of Aβ, clinical trials have yielded disappointing results. The lack of substantial cognitive improvement obtained by targeting Aβ raises the question of whether or not this is the correct target. Another important pathologic process in the AD brain is tau aggregation, which seems to become independent once initiated. Recent studies targeting tau in AD mouse models have displayed evidence of cognitive improvement, providing a novel therapeutic approach for the treatment of AD. In this review, we describe new advances in immunotherapy targeting Aβ peptide and tau protein, as well as future directions.

Keywords: immunotherapy, Alzheimer's disease, β-amyloid, tau

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

Download Article [PDF]  View Full Text [HTML][Machine readable]