title: HO-3867, a synthetic compound, inhibits the migration and invasion of ovarian carcinoma cells through downregulation of fatty acid synthase and focal adhesion kinase.
abstract: Fatty acid synthase (FAS) and focal adhesion kinase (FAK), which are overexpressed in a variety of human epithelial tumors, play a key role in the migration and invasion of cancer cells. Hence, strategies targeted at inhibiting the FAS/FAK proteins may have therapeutic potential for cancer treatment. The goal of the present study was to determine the effect of HO-3867, a synthetic compound, on the migratory ability of ovarian cancer cells and to understand the mechanistic pathways including the involvement of FAS, FAK, and associated signaling proteins. The study was done using two established human ovarian cancer cell lines, A2780 and SKOV3. Incubation with 10 μmol/L HO-3867 for 24 hours significantly inhibited the native as well as the vascular endothelial growth factor (VEGF)-mediated migration and invasion of the cells. HO-3867 significantly attenuated FAS and FAK protein levels apparently through accelerated ubiquitin-dependent degradation, as shown by a clear downregulation of isopeptidase USP2a. Exposure of cells to HO-3867 also significantly inhibited FAS activity and mRNA levels and a number of downstream proteins, including phospho-extracellular signal-regulated kinase 1/2, phospho-human epidermal growth factor receptor 1, sterol regulatory element binding protein 1, VEGF, and matrix metalloproteinase 2. Western blot and immunohistochemical analyses of A2780 xenograft tumors in mice treated with HO-3867 showed significant reduction in FAS, FAK, VEGF, and downstream protein levels when compared with the untreated control. Collectively, the results showed that HO-3867 suppressed the migration and invasion of ovarian cancer cells by inhibiting the expression or activity of FAS and FAK proteins. The study suggests that molecular targeting of FAS and FAK by HO-3867 may be a potential strategy for ovarian cancer therapy.
authors: Department of Internal Medicine and Comprehensive Cancer Center, The Ohio State University, 420 West 12th Avenue, Room 114, Columbus, OH 43210, USA.
authors: Karuppaiyah
authors: K
authors: Selvendiran
authors: Shabnam
authors: S
authors: Ahmed
authors: Alex
authors: A
authors: Dayton
authors: Yazhini
authors: Y
authors: Ravi
authors: M Lakshmi
authors: ML
authors: Kuppusamy
authors: Anna
authors: A
authors: Bratasz
authors: Brian K
authors: BK
authors: Rivera
authors: Tamás
authors: T
authors: Kálai
authors: Kálmán
authors: K
authors: Hideg
authors: Periannan
authors: P
authors: Kuppusamy
mesh_terms: D000818:Animals; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects*; D015536:Down-Regulation / Q000187:drug effects*; D064429:Fatty Acid Synthases / Q000378:metabolism*; D005260:Female; D051416:Focal Adhesion Protein-Tyrosine Kinases / Q000378:metabolism*; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D006801:Humans; D051379:Mice; D009361:Neoplasm Invasiveness / Q000517:prevention & control; D010051:Ovarian Neoplasms / Q000201:enzymology* / Q000235:genetics / Q000473:pathology*; D010881:Piperidones / Q000494:pharmacology*; D046988:Proteasome Endopeptidase Complex / Q000378:metabolism; D042461:Vascular Endothelial Growth Factor A / Q000378:metabolism; D023041:Xenograft Model Antitumor Assays
chemical_list: C541427:(3,5-bis((4-fluorophenyl)methylidene)-1-((1-hydroxy-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)methyl)piperidin-4-one); D010881:Piperidones; D042461:Vascular Endothelial Growth Factor A; D064429:Fatty Acid Synthases; D051416:Focal Adhesion Protein-Tyrosine Kinases; D046988:Proteasome Endopeptidase Complex