Journal Article10.1038/S41580-018-0074-2
Functions and mechanisms of epigenetic inheritance in animals.
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TL;DR: Insight from genome-wide studies suggest that a previously underappreciated fraction of mammalian genomes bypass epigenetic reprogramming during development, highlighting the importance of epigenetic inheritance in animals.
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Abstract: The idea that epigenetic determinants such as DNA methylation, histone modifications or RNA can be passed to the next generation through meiotic products (gametes) is long standing. Such meiotic epigenetic inheritance (MEI) is fairly common in yeast, plants and nematodes, but its extent in mammals has been much debated. Advances in genomics techniques are now driving the profiling of germline and zygotic epigenomes, thereby improving our understanding of MEI in diverse species. Whereas the role of DNA methylation in MEI remains unclear, insights from genome-wide studies suggest that a previously underappreciated fraction of mammalian genomes bypass epigenetic reprogramming during development. Notably, intergenerational inheritance of histone modifications, tRNA fragments and microRNAs can affect gene regulation in the offspring. It is important to note that MEI in mammals rarely constitutes transgenerational epigenetic inheritance (TEI), which spans multiple generations. In this Review, we discuss the examples of MEI in mammals, including mammalian epigenome reprogramming, and the molecular mechanisms of MEI in vertebrates in general. We also discuss the implications of the inheritance of histone modifications and small RNA for embryogenesis in metazoans, with a particular focus on insights gained from genome-wide studies.
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References
Potent and specific genetic interference by double-stranded RNA in Caenorhabditis elegans
Andrew Fire,SiQun Xu,Mary K. Montgomery,Steven A. Kostas,Steven A. Kostas,Samuel E. Driver,Craig C. Mello +6 more
TL;DR: To their surprise, it was found that double-stranded RNA was substantially more effective at producing interference than was either strand individually, arguing against stochiometric interference with endogenous mRNA and suggesting that there could be a catalytic or amplification component in the interference process.
16.7K
DNA methylation patterns and epigenetic memory
TL;DR: The heritability of methylation states and the secondary nature of the decision to invite or exclude methylation support the idea that DNA methylation is adapted for a specific cellular memory function in development.
Role for a bidentate ribonuclease in the initiation step of RNA interference
TL;DR: Dicer is a member of the RNase III family of nucleases that specifically cleave double-stranded RNAs, and is evolutionarily conserved in worms, flies, plants, fungi and mammals, and has a distinctive structure, which includes a helicase domain and dualRNase III motifs.
Regulation of chromatin by histone modifications
TL;DR: The known histone modifications are described, where they are found genomically and discussed and some of their functional consequences are discussed, concentrating mostly on transcription where the majority of characterisation has taken place.
Biogenesis of small RNAs in animals.
TL;DR: This Review summarizes the current knowledge of how these intriguing molecules are generated in animal cells.