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Updated: Oct 18, 2025
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Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain
Published on: July 12, 2012
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Epigenetic clock and methylation studies in vervet monkeys
Anna J Jasinska1,2,3, Amin Haghani4, Joseph A Zoller5
1Center for Neurobehavioral Genetics, Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA. ankajasinska@gmail.com.
Geroscience
|September 30, 2021
Summary
We developed novel DNA methylation clocks for vervet monkeys, enabling accurate age estimation in biomedical research. These epigenetic clocks reveal conserved aging processes across primate species.
Area of Science:
- Epigenetics
- Mammalian aging
- Non-human primate models
Background:
- Vervet monkeys (Chlorocebus sabaeus) are valuable models for biomedical research, yet lack DNA methylation-based age biomarkers.
- DNA methylation patterns change with age, serving as a molecular clock.
Purpose of the Study:
- To develop DNA methylation-based epigenetic clocks for vervet monkeys.
- To assess the conservation of epigenetic aging processes in primates.
- To provide tools for aging research in vervet monkeys.
Main Methods:
- Generated DNA methylation data from vervet monkey tissues (cerebral cortex, blood, liver) using a custom mammalian CpG array.
- Developed six vervet-specific epigenetic clocks (multi-tissue and tissue-specific).
- Created two dual-species (human-vervet) clocks for chronological and relative age estimation.
Main Results:
- Achieved high accuracy in estimating chronological and relative age in vervets using the developed clocks.
- Demonstrated evolutionary conservation of epigenetic aging processes in primates through accurate human-vervet clocks.
- Observed age correlations but offsets when applying vervet clocks to rhesus macaques, highlighting species-specific differences.
- Identified age-correlated CpGs near Polycomb targets (SUZ12, EED) and genes with H3K27me3 marks.
Conclusions:
- Novel DNA methylation clocks provide accurate age estimation for vervet monkeys across multiple tissues.
- Epigenetic aging mechanisms are conserved across primate species, as evidenced by dual-species clocks.
- These epigenetic clocks are valuable tools for future anti-aging studies in vervet monkeys and related primate research.
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