Evidence of epithelial-mesenchymal transition in canine prostate cancer metastasis

Autor(es)

Fonseca-Alves, Carlos Eduardo ^[1] ; Kobayashi, Priscila Emiko ^[1] ; Rivera-Calderon, Luis Gabriel ^[1] ; Laufer-Amorim, Renee ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Dept Vet Clin, Sch Vet Med & Anim Sci, BR-18618970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Research in Veterinary Science; v. 100, p. 176-181, JUN 2015.
• Citações Web of Science: 7

Resumo

The epithelial mesenchymal transition (EMT) is a fundamental event responsible for the invasiveness and metastasis of epithelial tumours. The EMT has been described in many human cancers, but there are few reports of this phenomenon in veterinary oncology. Due to the importance of this process, the current study evaluated mesenchymal and epithelial marker protein expression in prostate lesions from dogs. Our results indicate both a loss of E-cadherin and translocation of P-catenin from the membrane to the cytoplasm and nucleus in the tumour group. Vimentin expression in the tumour group was higher than in normal tissue. All of the metastases were positive for prostate-specific antigen, pan-cytokeratin and E-cadherin, although fewer positive cells were present than in the primary tumours. The immunohistochemical results showed a loss of epithelial markers and a gain of a mesenchymal marker among metastatic cells, suggesting that the EMT occurs during the metastatic process of canine prostate carcinoma. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 10/13774-6 - Expressão do c-Myc e NKX3.1 por imunoistoquímica em microarranjo de tecido (TMA) de lesões pré-neoplásicas e neoplásicas na próstata de cães
• Beneficiário: Carlos Eduardo Fonseca Alves
• Linha de fomento: Bolsas no Brasil - Mestrado
• Processo FAPESP: 12/16068-0 - Avaliação epigenética dos genes NKX3.1 e CDH1 e expressão do c-myc, NKX3.1 e caderina-E por imunoistoquímica em microarranjo de tecido (TMA) de lesões pré-neoplásicas e neoplásicas na próstata de cães
• Beneficiário: Renee Laufer Amorim
• Linha de fomento: Auxílio à Pesquisa - Regular