Comparison of genomic and proteomic data in recurrent airway obstruction affected horses using Ingenuity Pathway Analysis®.
Authors: Racine Julien, Gerber Vinzenz, Feutz Marybeth Miskovic, Riley C Paige, Adamec Jiri, Swinburne June E, Couetil Laurent L
Journal: BMC veterinary research
Summary
# Editorial Summary Recurrent airway obstruction (RAO) represents a significant chronic inflammatory disease in horses, particularly across the Northern hemisphere, with both genetic and environmental contributions shaping disease severity and outcome. Researchers integrated genomic data from eight candidate genes identified in prior linkage studies with proteomic analysis of bronchoalveolar lavage fluid collected from both healthy and RAO-affected horses, using Ingenuity Pathway Analysis® software to map interactions between these genetic and protein-level markers. This systems biology approach revealed previously uncharacterised cross-talk between specific genetic variants and inflammatory mediators in airway secretions, providing a more nuanced understanding of RAO pathophysiology than either genomic or proteomic data alone could offer. By bridging the gap between DNA-level predisposition and actual protein expression in diseased airways, the findings help explain why some genetically susceptible horses develop clinical disease whilst others remain subclinical, with implications for identifying at-risk individuals and tailoring preventive strategies. For practitioners managing RAO cases, these insights suggest that screening for candidate gene variants in combination with biomarker profiling of airway secretions could facilitate more precise phenotyping and potentially enable earlier intervention before irreversible airway remodelling develops.
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Practical Takeaways
- •RAO involves complex interactions between multiple genetic factors and immune proteins, suggesting that single-gene or single-protein approaches may be insufficient for understanding disease mechanism
- •Pathway analysis may help identify novel therapeutic targets beyond traditional anti-inflammatory treatments
- •Environmental management remains critical given that genetic predisposition requires environmental triggers to manifest clinically
Key Findings
- •Eight candidate genes identified in previous genetic linkage studies interact with proteins expressed in bronchoalveolar lavage fluid from RAO-affected horses
- •Ingenuity Pathway Analysis identified interconnected genomic and proteomic pathways contributing to RAO pathogenesis
- •Integration of genomic and proteomic data reveals molecular mechanisms underlying RAO inflammatory responses