title: Matrix metalloproteinase-9 is required for tubular network formation and migration of resistant breast cancer cells MCF-7 through PKC and ERK1/2 signalling pathways.
abstract: Matrix metalloproteinase-9 (MMP-9) strongly influences tumor development and metastasis. Using resistant (rMCF-7) and sensitive (sMCF-7) breast cancer lines we investigated the role of MMP-9 in cell migration (CM) and tubular network (TN) formation, two processes implied in tumor growth and metastasis. Our data demonstrate that MMP-9 which is critical for CM is necessary but not sufficient for TN formation and suggest a link between MDR1/P-gp and constitutive MMP-9. Both TN formation and CM are dependent on PKC and ERK1/2 pathways. This study reinforces the logic of combining therefore MMP inhibitors in cancer therapy, especially in patients with chemoresistance and invasion/metastasis.
authors.affiliation: UMRS, CRC, INSERM, Paris, France.
authors.forename: Asmae
authors.initials: A
authors.lastname: Karroum
authors.forename: Pezhman
authors.initials: P
authors.lastname: Mirshahi
authors.forename: Nadia
authors.initials: N
authors.lastname: Benabbou
authors.forename: Anne-Marie
authors.initials: AM
authors.lastname: Faussat
authors.forename: Jeannette
authors.initials: J
authors.lastname: Soria
authors.forename: Amu
authors.initials: A
authors.lastname: Therwath
authors.forename: Massoud
authors.initials: M
authors.lastname: Mirshahi
authors.forename: Mohamed
authors.initials: M
authors.lastname: Hatmi
mesh_terms: D001943:Breast Neoplasms / Q000188:drug therapy / Q000473:pathology*; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects; D019008:Drug Resistance, Neoplasm; D005260:Female; D005419:Flavonoids / Q000494:pharmacology; D006801:Humans; D020780:Matrix Metalloproteinase 9 / Q000502:physiology*; D019950:Mitogen-Activated Protein Kinase 1 / Q000502:physiology*; D048052:Mitogen-Activated Protein Kinase 3 / Q000502:physiology*; D011493:Protein Kinase C / Q000502:physiology*; D015398:Signal Transduction; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology
chemical_list: D005419:Flavonoids; D011493:Protein Kinase C; D019950:Mitogen-Activated Protein Kinase 1; D048052:Mitogen-Activated Protein Kinase 3; D020780:Matrix Metalloproteinase 9; D013755:Tetradecanoylphorbol Acetate; C093973:2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one