title: Gingival fibroblasts inhibit MMP-1 and MMP-3 activities in an ex-vivo artery model.
abstract: The main arterial pathologies can be associated with a deregulation of remodeling involving matrix metalloproteinases (MMPs), whereas gingival healing is characterized by an absence of fibrosis or irreversible elastin/collagen degradation. The aim of our study was to evaluate the effect of gingival fibroblasts on MMP-1 and MMP-3 secretion in an organotypic artery culture. MMP-1 and MMP-3 secretions and activities (dot blots, zymography, ELISA) were evaluated in coculture of rabbit artery in the presence or not of gingival fibroblasts. MMP-1/TIMP-1 and MMP-3/TIMP-1 complexes forms were measured by ELISA. Complementary studies were performed using human aortic smooth muscle cells cocultured with adventitial, dermal, or gingival fibroblasts. Our results indicated that MMP-1 and MMP-3 free-forms activities were significantly reduced in coculture. This inhibition was linked to a significant increase of TIMP-1 leading to formation of TIMP-1/MMPs complexes. Due to the presence of gingival fibroblasts, the decrease in MMP-1 and MMP-3 efficiency thus contributes to diminish the degradation of artery. This cellular therapy strategy could be promising in artery pathologies treatment.
authors: Paris-Descartes Medicine Faculty, and Dental Department, Albert Chenevier-Henri Mondor Hospital, Paris-Descartes University, Paris, France. adrien.naveau@laposte.net
authors: Adrien
authors: A
authors: Naveau
authors: Nicoleta
authors: N
authors: Reinald
authors: Benjamin
authors: B
authors: Fournier
authors: Eric
authors: E
authors: Durand
authors: Antoine
authors: A
authors: Lafont
authors: Bernard
authors: B
authors: Coulomb
authors: Bruno
authors: B
authors: Gogly
mesh_terms: D000328:Adult; D000818:Animals; D001011:Aorta; D002478:Cells, Cultured; D018920:Coculture Techniques; D005347:Fibroblasts / Q000378:metabolism*; D005881:Gingiva / Q000166:cytology*; D006801:Humans; D020781:Matrix Metalloproteinase 1 / Q000378:metabolism; D019278:Matrix Metalloproteinase 3 / Q000378:metabolism; D061965:Matrix Metalloproteinase Inhibitors; D009924:Organ Culture Techniques; D011817:Rabbits; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000378:metabolism*
chemical_list: D061965:Matrix Metalloproteinase Inhibitors; D019715:Tissue Inhibitor of Metalloproteinase-1; D019278:Matrix Metalloproteinase 3; D020781:Matrix Metalloproteinase 1