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Biological Processes Modulating Longevity across Primates: A Phylogenetic Genome-Phenome Analysis.
Gerard Muntané1,2, Xavier Farré1, Juan Antonio Rodríguez3
1Institute of Evolutionary Biology (UPF-CSIC), Universitat Pompeu Fabra, Barcelona, Catalonia, Spain.
Molecular Biology and Evolution
|May 23, 2018
Summary
Comparing genetic variation and lifespan across primates reveals molecular signatures of aging. Key genes involved in wound healing, blood coagulation, and cardiovascular health correlate with longevity, supporting antagonistic pleiotropy.
Area of Science:
- Evolutionary biology
- Genomics
- Aging research
Background:
- Aging is a complex biological process with significant inter-species variation.
- Understanding the genetic basis of longevity is crucial for aging research.
- Comparative genomics offers insights into molecular signatures of aging and lifespan.
Purpose of the Study:
- To investigate the relationship between genomic variation and maximum lifespan in primate species.
- To identify molecular pathways and genetic variants associated with longevity across primates.
Main Methods:
- Comparative genomics analysis of primate species.
- Identification of parallel amino acid mutations correlated with increased longevity.
- Analysis of protein evolution rates across primate phylogeny using phylogenetic generalized least squares.
Main Results:
- Identified 25 parallel amino acid variants associated with increased primate lifespan.
- Genes harboring these mutations are enriched in wound healing, blood coagulation, and cardiovascular pathways.
- Protein evolutionary rates correlate with longevity traits in pathways like Sphingosine 1-phosphate and PI3K signaling.
Conclusions:
- Comparative genomics effectively identifies aging and longevity-related pathways.
- Findings support the antagonistic pleiotropy theory of aging.
- Identified pathways offer insights into human senescence patterns.
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