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Basic Science and Pathogenesis.

Kelly Marie Johns1, Giorgia Caspani1, Wing Yan Leung1

  • 1University of British Columbia, Vancouver, BC, Canada.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 23, 2025
PubMed
Summary
This summary is machine-generated.

New research reveals that abnormal blood vessel growth (angiogenesis) and vascular dysfunction are key drivers in Alzheimer's disease (AD) progression, offering new therapeutic targets.

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Area of Science:

  • Neuroscience
  • Genomics
  • Vascular Biology

Background:

  • Alzheimer's disease (AD) is a neurodegenerative disorder causing cognitive decline and dementia.
  • While the amyloid hypothesis is prominent, vascular dysfunction is an emerging area of AD research.
  • Angiogenesis is implicated in early AD, but transcriptomic data is limited.

Purpose of the Study:

  • To generate the first single-cell transcriptomic profile of AD progression in a mouse model.
  • To identify novel molecular mechanisms underlying AD.
  • To discover potential therapeutic targets for AD.

Main Methods:

  • Analysis of brain tissue from Tg2576 AD model and control mice (N=28) across six developmental timepoints.
  • Single-cell RNA sequencing using 10X Genomics technology.
  • Pathway analysis to identify AD-associated transcriptional changes.

Main Results:

  • Significant upregulation of angiogenesis and vasculature development pathways in 6- and 9-month-old AD mice.
  • Increased amyloid-beta formation observed in AD model mice.
  • Identification of key transcriptional changes at single-cell resolution.

Conclusions:

  • Findings support a 'vascular angiogenesis model' of Alzheimer's disease.
  • Aberrant neoangiogenesis may disrupt blood-brain barrier integrity, driving amyloid-beta accumulation.
  • Targeting vascular dysfunction presents a promising therapeutic strategy for AD.