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Updated: Aug 18, 2026

Isolation and Staining of Mouse Skin Keratinocytes for Cell Cycle Specific Analysis of Cellular Protein Expression by Mass Cytometry
Published on: May 9, 2019
Expression of cell cycle associated proteins cyclin A, CDK-2, p27kip1 and p53 in equine sarcoids
Colin Nixon1, George Chambers, Victoria Ellsmore
1Division of Pathological Sciences, Institute of Comparative Medicine, University of Glasgow Veterinary School, Bearsden Road, Glasgow G61 1QH, Scotland, UK.
Abstract:
Equine sarcoids are benign fibroblastic skin tumours affecting equids worldwide. Whilst the pathogenesis is not entirely understood, infection with Bovine Papillomavirus (BPV) types 1 and 2 has been implicated as a major factor in the disease process, however the mechanism by which BPV infection contributes to sarcoid pathology is not clear. In this study, we show that the majority of sarcoids express the BPV-1 major transforming gene E6. Further, we demonstrate that sarcoid lesions are not associated with high levels of cellular proliferation as assessed by Ki67 expression or with expression of cell cycle regulators CDK-2, cyclin A and p27kip1. Our analysis of p53 shows that a subset of sarcoids are associated with abnormal cytoplasmic and nuclear expression of p53 and that the transactivation function of p53 is compromised in cells with cytoplasmic p53.
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