BUBR1 as a Prognostic Biomarker in Canine Oral Squamous Cell Carcinoma

Author:

Delgado LeonorORCID,Monteiro LuísORCID,Silva PatríciaORCID,Bousbaa HassanORCID,Garcez Fernanda,Silva João,Brilhante-Simões Paula,Pires IsabelORCID,Prada JustinaORCID

Abstract

Chromosomal instability (CIN) plays a key role in the carcinogenesis of several human cancers and can be related to the deregulation of core components of the spindle assembly checkpoint (SAC) including BUBR1 protein kinase. These proteins have been related to tumor development and poor survival rates in human patients with oral squamous cell carcinoma (OSCC). To investigate the expression of the SAC proteins BUBR1, BUB3 and SPINDLY and also Ki-67 in canine OSCC, we performed an immunohistochemical evaluation in 60 canine OSCCs and compared them with clinical and pathological variables. BUBR1, Ki-67, BUB3 and SPINDLY protein expressions were detected in all cases and classified as with a high-expression extent score in 31 (51.7%) cases for BUBR1, 33 (58.9%) cases for BUB3 and 28 (50.9%) cases for SPINDLY. Ki-67 high expression was observed in 14 (25%) cases. An independent prognostic value for BUBR1 was found, where high BUBR1 expression was associated with lower survival (p = 0.012). These results indicate that BUBR1 expression is an independent prognostic factor in these tumors, suggesting the potential use for clinical applications as a prognostic biomarker and also as a pharmacological target in canine OSCC.

Funder

Portuguese Foundation for Science and Technology

CESPU University

Publisher

MDPI AG

Subject

General Veterinary,Animal Science and Zoology

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