Alzheimer's Disease Progression in the 5×FAD Mouse Captured with a Multiplex Gene Expression Array

Area of Science:

• Neuroscience
• Genetics
• Immunology

Background:

• Alzheimer's disease (AD) is a complex neurodegenerative disorder with no new therapies in two decades.
• Disease progression involves dynamic changes in biological processes reflected by gene expression.
• Tracking these molecular changes is crucial for understanding AD and developing treatments.

Purpose of the Study:

• To establish a multiplex gene expression tracking platform.
• To monitor Alzheimer's disease progression in a relevant animal model.
• To facilitate the study of potential treatment paradigms.

Main Methods:

• Developed a multiplex platform targeting 47 key genes.
• Genes cover immunological, neuronal, mitochondrial, and autophagy pathways.
• Utilized the 5×FAD mouse model to capture disease progression.

Main Results:

• The immunological response showed the most significant changes in aged 5×FAD mice.
• Microglial gene expression was downregulated in young (1-month-old) mice, mirroring early human AD.
• Neuronal and mitochondrial gene sets also exhibited downregulation, though less pronounced.

Conclusions:

• The developed platform provides a quantitative, multi-dimensional approach to track AD progression.
• This tool can be used to monitor the efficacy of therapeutic interventions in preclinical models.
• Offers a foundation for advancing AD research and drug development.