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Basic Science and Pathogenesis.

Xinyi Lin1,2, Samantha A Blankers2, Kimberly Go2

  • 1University of Toronto, TORONTO, ON, Canada.

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

This study investigates how sex and APOE genotype impact neurogenesis dynamics in Alzheimer's disease (AD) models. Findings will clarify the roles of sex and genotype in neural stem cell pluripotency and neuronal maturation in AD.

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Area of Science:

  • Neuroscience
  • Genetics
  • Alzheimer's Disease Research

Background:

  • Alzheimer's disease (AD) risk factors include age, female sex, and APOEε4 allele.
  • Females with AD exhibit more severe cognitive decline and neuropathology than males.
  • Female APOEε4 carriers face higher AD risk and earlier onset with worse outcomes.

Purpose of the Study:

  • To investigate how sex and APOE genotype influence neurogenesis dynamics in AD.
  • To examine the expression of neural progenitor cells and maturation rate of new neurons.
  • To understand the interplay between age, sex, and APOE genotype on neurogenesis.

Main Methods:

  • Utilized young and middle-aged male and female humanized APOEε3 and APOEε4 mice.
  • Labeled newly proliferated cells using bromodeoxyuridine (BrdU) for temporal tracking.
  • Employed immunohistochemistry to analyze neural progenitor cells (BrdU/Sox2) and neuronal maturation (BrdU/NeuN).

Main Results:

  • Expected differences in temporal neurogenesis dynamics between hAPOEε4 and hAPOEε3 mice.
  • Anticipated variations in hippocampal neurogenesis levels based on genotype.
  • Hypothesized slower neuronal maturation rates in hAPOEε4 females compared to other groups.

Conclusions:

  • Findings will elucidate the role of sex and APOE genotype in neurogenesis and neuronal maturation.
  • Will provide insights into factors affecting neural stem cell pluripotency in AD models.
  • Aims to enhance understanding of AD-related neuropathological changes.