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Published on: February 2, 2024
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RNA-Seq analysis reveals the long noncoding RNAs associated with immunity in wild Myotis myotis bats
Sebastien Riquier1, Samuel Carthy1, Graham M Hughes1
1School of Biology and Environmental Science, University College Dublin, Belfield, Dublin, Ireland.
BMC Genomics
|April 5, 2025
Summary
Bats host viruses without illness due to unique immune systems. Researchers identified long non-coding RNAs (lncRNAs) in bats that may regulate immune responses to viruses and inflammation.
Area of Science:
- Virology
- Genomics
- Immunology
Background:
- Bats exhibit remarkable resilience to viral infections, a trait linked to their unique immune system.
- The precise molecular mechanisms governing bat immune responses, particularly concerning viral pathogens, remain incompletely understood.
- Long non-coding RNAs (lncRNAs) are increasingly recognized for their crucial regulatory roles in biological processes, including immunity.
Purpose of the Study:
- To investigate the role of lncRNAs in bat immune system regulation.
- To identify specific lncRNAs involved in managing viral infections and inflammation in bats.
- To hypothesize that lncRNA regulation contributes to bats' ability to coexist with viral pathogens.
Main Methods:
- Development of a lncRNA prediction pipeline for transcriptome annotation in multiple bat tissues.
- Analysis of 100 blood transcriptomes from wild Myotis myotis bats.
- Application of Weighted Gene Co-expression Network Analysis (WGCNA) and gene ontology for identifying mRNA-lncRNA co-expression modules.
Main Results:
- Characterization of bat lncRNAs revealed lower, tissue-specific expression, reduced GC content, and shorter lengths compared to coding genes.
- Two mRNA-lncRNA co-expression modules associated with T-cell activation/viral processes and inflammation were identified in Myotis myotis.
- Four candidate immune-related lncRNAs, including novel BatLnc1, M. myotis TUG1, MALAT1, and NEAT1, were selected for their potential roles in antiviral and anti-inflammatory functions.
Conclusions:
- The study presents the first *ab initio* prediction of lncRNAs in the non-model bat species, Myotis myotis.
- Network analysis indicated variations in immune status among individuals, potentially linked to disease.
- Identified lncRNAs are strongly associated with bat immune responses, providing a foundation for future functional studies and insights into bat antiviral strategies.
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