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Updated: Aug 21, 2026

Peptide Scanning-assisted Identification of a Monoclonal Antibody-recognized Linear B-cell Epitope
Published on: March 24, 2017
Mimotopes of conformational epitopes in fibrillar beta-amyloid
Goar Gevorkian1, Irina Petrushina, Karen Manoutcharian
1Instituto de investigaciones Biomédicas, Universidad Nacional Autonoma de México, México.
Abstract:
In Alzheimer's disease (AD) beta-amyloid peptide accumulates in the brain in different forms including fibrils. Amyloid fibrils could be recognized as foreign by the mature immune system since they are not present during its development. Thus, using mouse antisera raised against the fibrillar form of Abeta42, we have screened two phage peptide libraries for the presence of foreign conformational mimotopes of Abeta. Antisera from wild type animals recognized predominately peptides with the EFRH motif from Abeta42 sequence, whereas amyloid precursor protein (APP) transgenic mice recognized mainly phage clones that mimic epitopes (mimotopes) within the fibrillar Abeta42 but lack sequence homology with this peptide.
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