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Evolutionary conserved longevity genes and human cognitive abilities in elderly cohorts.
Lorna M Lopez1, Sarah E Harris, Michelle Luciano
1Department of Psychology, The University of Edinburgh, Edinburgh, UK. lorna.lopez@ed.ac.uk
European Journal of Human Genetics : EJHG
|November 3, 2011
Summary
Genetic variations in longevity genes may impact cognitive aging. A study found SYNJ2 gene variations are associated with cognitive abilities in older adults, suggesting a novel link between longevity genes and cognitive function.
Area of Science:
- Genetics
- Neuroscience
- Aging Research
Background:
- Genetic factors play a significant role in the aging process.
- Longevity genes identified in model organisms may influence human aging and cognitive function.
- Understanding genetic contributions to cognitive aging is crucial for developing interventions.
Purpose of the Study:
- To investigate the association between conserved longevity genes and cognitive ability in humans.
- To examine the influence of these genes on age-related cognitive decline.
- To identify novel genetic factors associated with cognitive performance and aging.
Main Methods:
- Comparative genomics identified conserved longevity genes.
- Six human orthologs of these genes (AFG3L2, FRAP1, MAT1A, MAT2A, SYNJ1, SYNJ2) were genotyped in the Lothian Birth Cohort 1936 (LBC1936).
- Cognitive abilities were assessed at age 11 and 70 years; genetic associations with cognitive performance and decline were analyzed. Replication in a larger consortium and meta-analysis were performed.
Main Results:
- Suggestive associations were found between single nucleotide polymorphisms (SNPs) in SYNJ2, MAT1A, AFG3L2, and SYNJ1 and cognitive abilities.
- Replication studies and meta-analysis confirmed the association between SYNJ2 variants and cognitive abilities (P=0.00077).
- SYNJ2 emerged as a novel gene potentially influencing cognitive abilities.
Conclusions:
- Genetic variations in conserved longevity genes, particularly SYNJ2, are associated with cognitive abilities in humans.
- This study highlights a potential genetic link between longevity pathways and cognitive aging.
- SYNJ2 represents a novel target for understanding and potentially intervening in cognitive aging.
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