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Global mapping of miRNA-target interactions in cattle (Bos taurus)
Troels K H Scheel1,2,3, Michael J Moore4, Joseph M Luna5,4
1Laboratory of Virology and Infectious Disease, Center for the Study of Hepatitis C, The Rockefeller University, New York, NY, USA. tscheel@sund.ku.dk.
Scientific Reports
|August 17, 2017
Summary
This study maps bovine micro-RNA (miRNA) interactions, revealing conserved targeting rules with new insights. Researchers identified novel miRNA functions in embryonic development and cell cycle regulation, offering a valuable resource for understanding miRNA roles.
Area of Science:
- Molecular Biology
- Genomics
- Animal Science
Background:
- Micro-RNA (miRNA) biology is crucial for development, cell proliferation, and disease.
- miRNAs are key regulators with therapeutic potential.
- Understanding miRNA interactions is vital in livestock, particularly cattle.
Purpose of the Study:
- To globally map miRNA interactions in cattle.
- To identify novel miRNA regulatory sites and functions.
- To provide a comprehensive resource for bovine miRNA research.
Main Methods:
- Cross-linking immunoprecipitation (CLIP) coupled with ligation of miRNA-target chimeras on Argonaute (AGO) protein.
- Global mapping of miRNA-mRNA interactions.
- Gene Ontology (GO) analysis of targeted mRNAs.
Main Results:
- Generated the deepest reported bovine miRNA interactome to date.
- Confirmed conserved miRNA targeting principles with expanded pairing rules.
- Experimentally validated functional miR-17 regulatory sites and identified novel miRNA functions.
- Determined GO terms for over 5000 miRNA-targeted mRNAs, revealing roles in embryonic development and cell cycle.
Conclusions:
- The study provides a significant resource for understanding bovine and conserved miRNA regulation.
- Experimental mapping powerfully establishes comprehensive miRNA interaction maps.
- Identified unappreciated functions of miRNAs in bovine biology, including embryonic development and cell cycle control.
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