Associations of MAP2K3 gene variants with superior memory in SuperAgers

for the Alzheimer's Disease Neuroimaging Initiative

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Introduction: SuperAgers are adults age 80+ with episodic memory performance that is at least as good as that of average middle-aged adults. Understanding the biological determinants of SuperAging may have relevance to preventing age-related cognitive decline and dementia. This study aimed to identify associations between genetic variations and the SuperAging phenotype using Whole Exome Sequencing (WES). Methods: Sequence Kernel Association Combined (SKAT-C) test was conducted at the gene level including both rare and common variants in 56 SuperAgers and 22 cognitively-average controls from the Alzheimer's disease Neuroimaging Initiative (ADNI). Results: The SuperAging phenotype was associated with variants in the Mitogen-Activated Protein Kinase Kinase 3 (MAP2K3) gene. Three single nucleotide polymorphisms (SNPs) contributed to the significance (rs2363221 [intron 1], rs2230435 [exon 5], rs736103 [intron 7]). Conclusions: MAP2K3 resides in a biological pathway linked to memory. It is in a signaling cascade associated with beta-amyloid mediated apoptosis and has enriched expression in microglia. This preliminary work suggests MAP2K3 may represent a novel therapeutic target for age-related memory decline and perhaps Alzheimer's disease (AD).

Original languageEnglish (US)
Article number155
JournalFrontiers in Aging Neuroscience
Volume10
Issue numberMAY
DOIs
StatePublished - May 29 2018

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Keywords

  • Aging
  • Alzheimer's
  • Alzheimer's dementia
  • Alzheimer's disease (AD)
  • Cognition
  • Episodic memory
  • Genetics
  • Successful aging
  • Whole exome sequencing

ASJC Scopus subject areas

  • Aging
  • Cognitive Neuroscience

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