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DNA Aneuploidy in Malignant Salivary Gland Neoplasms is Independent of USP44 Protein Expression

2017; Fundação Odontológica de Ribeirão Preto; Volume: 28; Issue: 2 Linguagem: Inglês

10.1590/0103-6440201701018

1806-4760

Vanessa Fátima Bernardes, Edward Odell, Ricardo Santiago Gomez, Carolina Cavaliéri Gomes,

Salivary Gland Tumors Diagnosis and Treatment

Chromosomal instability, leading to aneuploidy, is one of the hallmarks of human cancers. USP44 (ubiquitin specific peptidase 44) is an important molecule that plays a regulatory role in the mitotic checkpoint and USP44 loss causes chromosome mis-segregation, aneuploidy and tumorigenesis in vivo. In this study, it was investigated the immunoexpression of USP44 in 28 malignant salivary gland neoplasms and associated the results with DNA ploidy status assessed by image cytometry. USP44 protein was widely expressed in most of the tumor samples and no clear association could be established between its expression and DNA ploidy status or tumor size. On this basis, it may be concluded that the aneuploidy of the salivary gland cancers included in this study was not driven by loss of USP44 protein expression.