Abstract：
:We screened anti-Aβ1-42 antibodies from a human Alzheimer's disease (AD) specific single chain variable fragment (scFv) phage display library and assessed their effects in APP/PS1 transgenic mice. Reverse transcription-PCR was used to construct the scFv phage display library, and screening identified 11A5 as an anti-Aβ1-42 antibody. We mixed 11A5 and the monoclonal antibody 6E10 with Aβ1-42 and administered the mixture to Sprague-Dawley rats via intracerebroventricular injection. After 30 days, rats injected with the antibody/Aβ1-42 mixture and those injected with Aβ1-42 alone were tested on the Morris water maze. We also injected 11A5 and 6E10 into APP/PS1 transgenic mice and assessed the concentrations of Aβ in brain and peripheral blood by ELISA at 1-month intervals for 3 months. Finally we evaluated behavior changes in the Morris water maze. Rats injected with Aβ1-42 and mixed antibodies showed better performance in the Morris water maze than did rats injected with Aβ1-42 alone. In APP/PS1 transgenic mice, Aβ concentration was lower in the brains of the antibody-treated group than in the control group, but higher in the peripheral blood. The antibody-treated mice also exhibited improved behavioral performance in the Morris water maze. In conclusion, anti-Aβ1-42 antibodies (11A5) screened from the human scFv antibody phage display library promoted the efflux or clearance of Aβ1-42 and effectively decreased the cerebral Aβ burden in an AD mouse model.
journal_name
Brain Resjournal_title
Brain researchauthors
Wang J,Li N,Ma J,Gu Z,Yu L,Fu X,Liu X,Wang Jdoi
10.1016/j.brainres.2016.01.028subject
Has Abstractpub_date
2016-03-15 00:00:00pages
169-79eissn
0006-8993issn
1872-6240pii
S0006-8993(16)30005-1journal_volume
1635pub_type
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