Abstract
DNA methylation is a stable and heritable epigenetic mechanism, of which the main functions are stabilizing the transcription of genes and promoting genetic conservation. In animals, the direct molecular inducers of DNA methylation mainly include histone covalent modification and non-coding RNA, whereas the fundamental regulators of DNA methylation are genetic and environmental factors. As is well known, competition is present everywhere in life systems, and will finally strike a balance that is optimal for the animal’s survival and reproduction. The same goes for the regulation of DNA methylation. Genetic and environmental factors, respectively, are responsible for the programmed and plasticity changes of DNA methylation, and keen competition exists between genetically influenced procedural remodeling and environmentally influenced plastic alteration. In this process, genetic and environmental factors collaboratively decide the methylation patterns of corresponding loci. DNA methylation alterations induced by environmental factors can be transgenerationally inherited, and exhibit the characteristic of Lamarckian inheritance. Further research on regulatory mechanisms and the environmental plasticity of DNA methylation will provide strong support for understanding the biological function and evolutionary effects of DNA methylation.
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This work was supported by the national natural science foundation of China (Nos. 31972529, 31001017, 31272464), and the national key research and development projects (2017YFD0500500, 2017YFD0502200).
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Li, Y., Xu, Y., Liu, T. et al. The regulation mechanisms and the Lamarckian inheritance property of DNA methylation in animals. Mamm Genome 32, 135–152 (2021). https://doi.org/10.1007/s00335-021-09870-8
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DOI: https://doi.org/10.1007/s00335-021-09870-8