title: Multiple changes induced by fibroblasts on breast cancer cells.
abstract: It is now widely recognized that the cross-talk between cancer and stromal cells may play a crucial role in cancer progression. However, little is known about the complex underlying molecular mechanisms that occur within the tumor microenvironment. Fibroblasts are the major stromal cells with multiple roles, especially toward both the extracellular matrix and the neighboring cell population, including neoplastic cells. Consequently, proteomic analyses would provide a wider resource for a better understanding of the potential modulating effects exerted by fibroblasts on cancer cells. In this article we describe the effects of fibroblast stimulation on the breast cancer cell line (8701-BC) proteomics, using a trans-well coculture system. Our results clearly indicate that fibroblasts induce considerable proteomic modulations on 8701-BC, mainly in the cytoskeleton proteins and glycolytic enzymes. Additionally, fibroblast-conditioned medium increased neoplastic cell proliferation and invasion with a concurrent upregulation of the c-Myc oncogene. Collectively these results suggest that fibroblast stimulation may enhance the malignant potential of breast cancer cells in vitro.
authors.affiliation: Dipartimento di Oncologia Sperimentale e Applicazioni Cliniche (DOSAC), Palermo, Italy.
authors.forename: Patrizia
authors.initials: P
authors.lastname: Cancemi
authors.forename: Nadia Ninfa
authors.initials: NN
authors.lastname: Albanese
authors.forename: Gianluca
authors.initials: G
authors.lastname: DiCara
authors.forename: Maria Rita
authors.initials: MR
authors.lastname: Marabeti
authors.forename: Francesca
authors.initials: F
authors.lastname: Costantini
authors.forename: Salvatore
authors.initials: S
authors.lastname: Minafra
authors.forename: Ida
authors.initials: I
authors.lastname: Pucci-Minafra
mesh_terms: D001943:Breast Neoplasms / Q000188:drug therapy / Q000378:metabolism* / Q000473:pathology; D002450:Cell Communication; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D018920:Coculture Techniques; D017077:Culture Media, Conditioned / Q000494:pharmacology; D003598:Cytoskeletal Proteins / Q000737:chemistry / Q000378:metabolism; D005260:Female; D005347:Fibroblasts / Q000187:drug effects / Q000378:metabolism* / Q000473:pathology; D015972:Gene Expression Regulation, Neoplastic; D016259:Genes, myc / Q000235:genetics; D006801:Humans; D009361:Neoplasm Invasiveness; D020543:Proteome / Q000032:analysis / Q000378:metabolism*; D040901:Proteomics; D016271:Proto-Oncogene Proteins c-myc / Q000235:genetics / Q000378:metabolism; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D017154:Stromal Cells / Q000187:drug effects / Q000378:metabolism* / Q000473:pathology; D015854:Up-Regulation
chemical_list: D017077:Culture Media, Conditioned; D003598:Cytoskeletal Proteins; D020543:Proteome; D016271:Proto-Oncogene Proteins c-myc