Molecular approaches to equine sarcoids.
Authors: Semik-Gurgul Ewelina
Journal: Equine veterinary journal
Summary
# Editorial Summary: Molecular Approaches to Equine Sarcoids Sarcoids remain the most prevalent cutaneous neoplasia in horses, with bovine papillomavirus (BPV) infection as the established aetiological agent, yet the precise molecular mechanisms driving malignant transformation remain incompletely understood. Semik-Gurgul's 2021 review synthesises contemporary molecular research examining tumour suppressor genes, proto-oncogenes, and epigenetic modifications—including microRNA expression patterns and DNA methylation—that parallel mechanisms identified in human malignancies. Current molecular profiling techniques enable characterisation of differential gene expression between affected and normal equine skin tissue, potentially distinguishing sarcoid subtypes and predicting biological behaviour. The clinical relevance of these molecular markers extends beyond histopathological diagnosis, offering practitioners potential tools for prognostication, individualised treatment planning, and identifying horses at risk of recurrence or multiple lesions. Integration of molecular profiling into equine sarcoid management could refine case selection for intervention strategies, though further translational research is required to establish standardised, cost-effective screening protocols suitable for practice settings.
Read the full abstract on PubMed
Practical Takeaways
- •Molecular genetic approaches complement traditional clinical examinations and may improve diagnostic accuracy and prognostic assessment of equine sarcoids
- •Understanding gene expression and epigenetic changes in sarcoid tissue could help predict treatment response and guide therapeutic selection
- •BPV remains the primary aetiological agent; molecular testing may enable earlier detection and help identify horses at higher risk of developing or spreading sarcoids
Key Findings
- •Bovine papillomaviruses (BPVs) are the primary causative agent of equine sarcoids, the most common skin tumours in horses
- •Gene expression profiling and epigenetic alterations including microRNA differential expression and DNA methylation status can be assessed in sarcoid tissues
- •Tumour suppressors and proto-oncogenes implicated in human neoplasia have been investigated in equine sarcoids to understand aetiopathogenesis
- •Molecular biomarkers have potential applications in diagnosis, prognosis, therapeutic response assessment and disease screening for equine sarcoids