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Author Spotlight: RNAi Inheritance and ChIP in C. elegans
Published on: May 5, 2023
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RNA-mediated transgenerational inheritance in ciliates and plants
Zachary T Neeb1, Mariusz Nowacki2
1Institute of Cell Biology, University of Bern, Baltzerstrasse 4, 3012, Bern, Switzerland.
Chromosoma
|December 13, 2017
Summary
Transgenerational epigenetic inheritance involves passing DNA changes across generations without altering the DNA sequence. This review focuses on RNA-mediated processes and chromatin states in plants and ciliates, avoiding complexities seen in mammals.
Area of Science:
- Epigenetics and Genomics
- Molecular Biology
- Developmental Biology
Background:
- Next-generation sequencing (NGS) advances have shifted focus to heritable epigenetic modifications beyond DNA sequence.
- Transgenerational inheritance is defined as heritable epigenetic changes passed to offspring without DNA sequence alteration.
- Epigenetic reprogramming during sexual reproduction in mammals complicates the study of true transgenerational inheritance.
Purpose of the Study:
- To review current knowledge on transgenerational epigenetic inheritance in ciliates and plants.
- To emphasize the roles of RNA-mediated processes and chromatin state changes in this inheritance.
- To provide insights into a phenomenon complicated by epigenetic reprogramming in higher eukaryotes.
Main Methods:
- Literature review of studies on transgenerational epigenetic inheritance.
- Focus on RNA-mediated mechanisms and chromatin modifications.
- Comparative analysis of inheritance patterns in ciliates and plants versus mammals.
Main Results:
- Ciliates and plants exhibit robust transgenerational epigenetic inheritance.
- RNA-mediated processes and altered chromatin states are key mechanisms.
- These systems offer clearer models for studying transgenerational epigenetic inheritance compared to mammals.
Conclusions:
- Transgenerational epigenetic inheritance is well-established in ciliates and plants.
- RNA and chromatin dynamics are crucial for heritable epigenetic information transfer.
- These organisms serve as valuable models for understanding epigenetic inheritance beyond DNA sequence.
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