Epigenetics for anthropologists: An introduction to methods.

Area of Science:

• Epigenetics
• Human Biology
• Anthropology

Background:

• Epigenetics, chemical genome modifications influencing gene expression, is increasingly studied by social scientists.
• Anthropologists and human biologists view epigenetics as a link between environment and genome, adding complexity to human biological variation studies.
• The field has seen rapid growth in interest and methods over the last decade.

Purpose of the Study:

• To provide an overview of current methods for assaying DNA methylation, the most studied epigenetic modification.
• To guide researchers on sample collection, laboratory analyses (locus-specific and genome-wide), and statistical analysis.
• To discuss key challenges in DNA methylation research, including tissue specificity, stability, timing, statistical issues, and data interpretation.

Main Methods:

• Review of current laboratory methods for DNA methylation analysis.
• Discussion of sample collection and preparation considerations.
• Overview of statistical approaches for epigenetic data analysis.

Main Results:

• Detailed examination of locus-specific and genome-wide DNA methylation assays.
• Considerations for planning and conducting DNA methylation studies.
• Identification of critical challenges such as tissue specificity, sample stability, and batch effects.

Conclusions:

• This review serves as a primer for anthropologists and human biologists on DNA methylation analysis.
• It highlights the importance of careful planning, appropriate methods, and statistical rigor in epigenetic research.
• Understanding these methods and challenges is crucial for integrating epigenetic data into biological and anthropological studies.