Probing Wnt pathway and functional signal in equine melanocytic neoplasms through quantitative proteomics and immunohistochemistry.
Authors: Tesena Parichart, Vinijkumthorn Ruethaiwan, Kingkaw Amornthep, Yanyongsirikarn Petchpailin, Phasuk Khajornpol, Ploypetch Sekkarin, Phaonakrop Narumon, Roytrakul Sittiruk, Vongsangnak Wanwipa, Prapaiwan Nawarus
Journal: BMC veterinary research
Summary
# Editorial Summary Equine melanocytic neoplasms (EMNs) represent a significant clinical burden in grey horses, yet proteomic characterisation of early-stage disease has remained largely unexplored—a gap this 2025 research addresses through quantitative mass spectrometry and immunohistochemical analysis of tissue biopsies across normal, early EMN, and advanced EMN groups. The researchers identified protein expression signatures capable of distinguishing disease stages, with particular focus on Wnt signalling pathway components, which emerging evidence suggests play a regulatory role in melanoma development. By mapping proteomic differences between early and severe neoplastic lesions, the study provides molecular markers that could potentially enable earlier detection and staging of EMN in clinical practice. For farriers, veterinarians, and support professionals, these findings offer the prospect of improved diagnostic precision and prognostic stratification, ultimately supporting more targeted management strategies during the critical early phases when intervention may be most effective. Understanding the mechanistic pathways driving EMN progression could also inform future therapeutic approaches beyond current surgical and chemotherapeutic options.
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Practical Takeaways
- •Early detection biomarkers for equine melanomas may eventually allow earlier intervention before tumors become clinically significant
- •Understanding the Wnt pathway's role in equine melanocytic neoplasia could inform future targeted therapeutic strategies specific to grey horses prone to these tumors
- •Proteomic signatures may help veterinarians distinguish early melanocytic changes from normal variation in grey horse skin
Key Findings
- •Proteomic profiling identified signature proteins capable of distinguishing early-stage melanocytic neoplasms from severe disease and normal skin tissue
- •Wnt pathway signaling was implicated as a functional pathway in equine melanocytic neoplasm development
- •Quantitative proteomics combined with immunohistochemistry enabled characterization of protein expression patterns across disease progression stages