Location and maturity of Aβ plaques may influence efficacy of Alzheimer’s therapies
November 18, 2022
In recent research by NOMIS Awardee Adriano Aguzzi and colleagues, the team found a striking dependence of specific Aβ plaque treatments on the location and maturity of Aβ plaques. Their findings were published in EMBO Molecular Medicine.
Many efforts targeting amyloid-β (Aβ) plaques for the treatment of Alzheimer’s Disease thus far have resulted in failures during clinical trials. Regional and temporal heterogeneity of efficacy and dependence on plaque maturity may have contributed to these disappointing outcomes. In this study, we mapped the regional and temporal specificity of various anti-Aβ treatments through high-resolution light-sheet imaging of electrophoretically cleared brains. We assessed the effect on amyloid plaque formation and growth in Thy1-APP/PS1 mice subjected to β-secretase inhibitors, polythiophenes, or anti-Aβ antibodies. Each treatment showed unique spatiotemporal Aβ clearance, with polythiophenes emerging as a potent anti-Aβ compound. Furthermore, aligning with a spatial-transcriptomic atlas revealed transcripts that correlate with the efficacy of each Aβ therapy. As observed in this study, there is a striking dependence of specific treatments on the location and maturity of Aβ plaques. This may also contribute to the clinical trial failures of Aβ-therapies, suggesting that combinatorial regimens may be significantly more effective in clearing amyloid deposition.
Read the EMBO Molecular Medicine publication: Whole-brain microscopy reveals distinct temporal and spatial efficacy of anti-Aβ therapies
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Professor of neuropathology and director of the Institute of Neuropathology
University of Zurich
Exploring the Locales of Cognitive Decline
NOMIS RESEARCH PROJECT