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Biogenesis and Function of Ago-Associated RNAs
Iben Daugaard1, Thomas Birkballe Hansen1
1Department of Molecular Biology and Genetics (MBG), and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark.
Trends in Genetics : TIG
|February 9, 2017
Summary
Discover novel regulatory RNA molecules, like agotrons, that bypass standard microRNA processing pathways. This review explores alternative biogenesis and functions of Argonaute-associated RNAs in mammals.
Area of Science:
- Molecular Biology
- Genomics
- RNA Biology
Background:
- High-throughput sequencing has revealed diverse small non-coding RNAs (ncRNAs).
- MicroRNAs (miRNAs) are key post-transcriptional regulators processed via Drosha/DGCR8 and Dicer.
- Emerging miRNA-like species exhibit alternative biogenesis pathways.
Purpose of the Study:
- To review current knowledge on Argonaute (Ago)-associated RNAs.
- To highlight recent discoveries in alternative RNA biogenesis and functions.
- To focus on mammalian systems and novel regulatory RNA species.
Main Methods:
- Review of existing literature and recent research findings.
- Analysis of high-throughput sequencing data related to ncRNAs.
- Comparative analysis of canonical and alternative RNA processing pathways.
Main Results:
- Identification of diverse Ago-associated RNAs beyond canonical miRNAs.
- Discovery of novel RNA species, such as agotrons, bypassing Drosha/DGCR8 and Dicer.
- Elucidation of alternative biogenesis strategies for regulatory RNAs.
Conclusions:
- Mammalian cells host a wider array of regulatory Ago-associated RNAs than previously understood.
- Alternative processing pathways contribute to the complexity of gene regulation.
- Further research into these novel RNAs may uncover new therapeutic targets.
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