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Type: Artigo de periódico
Title: The Fatty Acid Synthase Inhibitor Orlistat Reduces The Growth And Metastasis Of Orthotopic Tongue Oral Squamous Cell Carcinomas.
Author: Agostini, Michelle
Almeida, Luciana Y
Bastos, Débora C
Ortega, Rose M
Moreira, Fernanda S
Seguin, Fabiana
Zecchin, Karina G
Raposo, Helena F
Oliveira, Helena C F
Amoêdo, Nivea D
Salo, Tuula
Coletta, Ricardo D
Graner, Edgard
Abstract: Fatty acid synthase (FASN) is the biosynthetic enzyme responsible for the endogenous synthesis of fatty acids. It is downregulated in most normal cells, except in lipogenic tissues such as liver, lactating breast, fetal lung, and adipose tissue. Conversely, several human cancers, including head and neck squamous cell carcinomas (HNSCC), overexpress FASN, which has been associated with poor prognosis and recently suggested as a metabolic oncoprotein. Orlistat is an irreversible inhibitor of FASN activity with cytotoxic properties on several cancer cell lines that inhibits tumor progression and metastasis in prostate cancer xenografts and experimental melanomas, respectively. To explore whether the inhibition of FASN could impact oral tongue squamous cell carcinoma (OTSCC) metastatic spread, an orthotopic model was developed by the implantation of SCC-9 ZsGreen LN-1 cells into the tongue of BALB/c nude mice. These cells were isolated through in vivo selection, show a more invasive behavior in vitro than the parental cells, and generate orthotopic tumors that spontaneously metastasize to cervical lymph nodes in 10 to 15 days only. SCC-9 ZsGreen LN-1 cells also exhibit enhanced production of MMP-2, ERBB2, and CDH2. The treatment with orlistat reduced proliferation and migration, promoted apoptosis, and stimulated the secretion of VEGFA165b by SCC-9 ZsGreen LN-1 cells. In vivo, the drug was able to decrease both the volume and proliferation indexes of the tongue orthotopic tumors and, importantly, reduced the number of metastatic cervical lymph nodes by 43%. These results suggest that FASN is a potential molecular target for the chemotherapy of patients with OTSCC.
Subject: Animals
Carcinoma, Squamous Cell
Cell Line, Tumor
Cell Proliferation
Fatty Acid Synthase, Type I
Neoplasm Metastasis
Tongue Neoplasms
Xenograft Model Antitumor Assays
Citation: Molecular Cancer Therapeutics. v. 13, n. 3, p. 585-95, 2014-Mar.
Rights: fechado
Identifier DOI: 10.1158/1535-7163.MCT-12-1136
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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