title: Higher expression and activity of metalloproteinases in human cervical carcinoma cell lines is associated with HPV presence.
abstract: Matrix metalloproteinases (MMPs) MMP-2, MMP-9, and MT1-MMP are required for basement membrane degradation in cervical carcinoma. We evaluated the expression and activity of MMPs and their inhibitors RECK and TIMP-2 in 3 human invasive cervical carcinoma cell lines. Two HPV16-positive cell lines (SiHa and CaSki) and an HPV-negative cell line (C33A) were cultured either onto a type-I collagen gel, Matrigel, or plastic, to recreate their three-dimensional growth environment and evaluate the expression of these genes using quantitative real-time PCR. We also analyzed the gelatinolytic activity of MMP-2 and MMP-9 by zymography. We found that HPV (human papillomavirus)-positive cell lines express higher levels of MMP-2, MT1-MMP, and TIMP-2 than the HPV negative cell line. In addition, MMP-9 was expressed at very low levels in both HPV-negative and HPV-positive cell lines. We also observed that the expression of the RECK gene is higher in CaSki cells, being associated with higher pro-MMP-2 activity. Furthermore, Matrigel substrate influences MMP-2 expression in both SiHa and CaSki cells. On the other hand, we found that type-I collagen gel, but not Matrigel, can enhance pro-MMP-2 activity in all cell lines. Our results suggest that the presence of HPV is related to increased expression of MMP-2, MT1-MMP, and TIMP-2, and that pro-MMP-2 activity is higher in HPV-positive than in HPV-negative cells.
authors.affiliation: Department of Clinical Chemistry & Toxicology, School of Pharmaceutical Sciences, University of São Paulo, Av. Professor Lineu Prestes, 580, Bloco 17, 05508-000 São Paulo, Brazil.
authors.forename: Laura Beatriz
authors.initials: LB
authors.lastname: da Silva Cardeal
authors.forename: Carla Abdo
authors.initials: CA
authors.lastname: Brohem
authors.forename: Tatiana Caroline Silveira
authors.initials: TC
authors.lastname: Corrêa
authors.forename: Sheila Maria Brochado
authors.initials: SM
authors.lastname: Winnischofer
authors.forename: Fabio
authors.initials: F
authors.lastname: Nakano
authors.forename: Enrique
authors.initials: E
authors.lastname: Boccardo
authors.forename: Luisa Lina
authors.initials: LL
authors.lastname: Villa
authors.forename: Mari Cleide
authors.initials: MC
authors.lastname: Sogayar
authors.forename: Silvya Stuchi
authors.initials: SS
authors.lastname: Maria-Engler
mesh_terms: D002277:Carcinoma / Q000235:genetics* / Q000821:virology*; D005260:Female; D058851:GPI-Linked Proteins; D015972:Gene Expression Regulation, Neoplastic; D052162:Human papillomavirus 16 / Q000302:isolation & purification*; D006801:Humans; D053511:Matrix Metalloproteinase 14 / Q000378:metabolism; D020778:Matrix Metalloproteinase 2 / Q000378:metabolism; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism; D008562:Membrane Glycoproteins / Q000378:metabolism; D045726:Metalloproteases / Q000235:genetics / Q000378:metabolism*; D019716:Tissue Inhibitor of Metalloproteinase-2 / Q000378:metabolism; D014407:Tumor Cells, Cultured; D002583:Uterine Cervical Neoplasms / Q000235:genetics* / Q000821:virology*
chemical_list: D058851:GPI-Linked Proteins; D008562:Membrane Glycoproteins; C115460:RECK protein, human; D019716:Tissue Inhibitor of Metalloproteinase-2; D045726:Metalloproteases; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9; D053511:Matrix Metalloproteinase 14