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Gene expression of Decompression Sickness-resistant rats through a miRnome/transcriptome crossed approach
Emmanuel Dugrenot1,2,3,4, Anthony Guernec5, Jérémy Orsat5
1Univ Brest, ORPHY's Laboratory, 6 Av Le Gorgeu, CS93837, F-29238, Brest, Cedex, France. edugrenot@dan.org.
Communications Biology
|October 2, 2024
Summary
Researchers bred rats for enhanced resistance to decompression sickness (DCS). Gene and microRNA expression analysis revealed key pathways, confirming inflammation
Area of Science:
- Physiology
- Genomics
- Molecular Biology
Background:
- Inter-individual variability in decompression sickness (DCS) susceptibility is significant but poorly understood.
- Selective breeding of rats over 6 generations yielded a strain with 3-fold greater DCS resistance compared to controls.
Purpose of the Study:
- To elucidate the molecular mechanisms underlying DCS resistance.
- To compare genome-wide gene and microRNA expression between DCS-resistant rats and a non-resistant Wistar strain.
Main Methods:
- Microarray transcriptomic analysis of genome expression.
- PCR-based microRNA profiling (miRnome study).
- Comparison of gene and microRNA expression in male and female rats.
Main Results:
- Identified differentially expressed genes and microRNAs between resistant and non-resistant rat strains.
- Detected gender-specific differences in gene expression.
- Highlighted involvement of inflammatory response, circadian clock, cell signaling, motricity, phagocytosis, and apoptosis pathways.
Conclusions:
- Inflammation plays a crucial role in the pathophysiology of decompression sickness.
- Genetic factors influencing inflammation and other identified pathways contribute to DCS resistance.
