title: Cyclic mechanical strain-induced proliferation and migration of human airway smooth muscle cells: role of EMMPRIN and MMPs.
abstract: Airway smooth muscle (ASM) proliferation and migration are major components of airway remodeling in asthma. Asthmatic airways are exposed to mechanical strain, which contributes to their remodeling. Matrix metalloproteinase (MMP) plays an important role in remodeling. In the present study, we examined if the mechanical strain of human ASM (HASM) cells contributes to their proliferation and migration and the role of MMPs in this process. HASM were exposed to mechanical strain using the FlexCell system. HASM cell proliferation, migration and MMP release, activation, and expression were assessed. Our results show that cyclic strain increased the proliferation and migration of HASM; cyclic strain increased release and activation of MMP-1, -2, and -3 and membrane type 1-MMP; MMP release was preceded by an increase in extracellular MMP inducer; Prinomastat [a MMP inhibitor (MMPI)] significantly decreased cyclic strain-induced proliferation and migration of HASM; and the strain-induced increase in the release of MMPs was accompanied by an increase in tenascin-C release. In conclusion, cyclic mechanical strain plays an important role in HASM cell proliferation and migration. This increase in proliferation and migration is through an increase in MMP release and activation. Pharmacological MMPIs should be considered in the pursuit of therapeutic options for airway remodeling in asthma.
authors: Department of Medicine and Research, VAMC Northport, Northport, New York, USA.
authors: Nadia A
authors: NA
authors: Hasaneen
authors: Stanley
authors: S
authors: Zucker
authors: Jian
authors: J
authors: Cao
authors: Christian
authors: C
authors: Chiarelli
authors: Reynold A
authors: RA
authors: Panettieri
authors: Hussein D
authors: HD
authors: Foda
mesh_terms: D001249:Asthma / Q000188:drug therapy / Q000473:pathology; D051926:Basigin / Q000502:physiology*; D002465:Cell Movement; D049109:Cell Proliferation; D002478:Cells, Cultured; D006801:Humans; D008168:Lung / Q000166:cytology*; D020781:Matrix Metalloproteinase 1 / Q000502:physiology; D020778:Matrix Metalloproteinase 2 / Q000502:physiology; D019278:Matrix Metalloproteinase 3 / Q000502:physiology; D020782:Matrix Metalloproteinases / Q000502:physiology; D053504:Matrix Metalloproteinases, Membrane-Associated; D008666:Metalloendopeptidases / Q000502:physiology*; D032389:Myocytes, Smooth Muscle / Q000166:cytology*; D009930:Organic Chemicals / Q000494:pharmacology; D013314:Stress, Mechanical; D019063:Tenascin / Q000378:metabolism; D019716:Tissue Inhibitor of Metalloproteinase-2 / Q000502:physiology
chemical_list: C497886:BSG protein, human; D009930:Organic Chemicals; D019063:Tenascin; C113282:prinomastat; D019716:Tissue Inhibitor of Metalloproteinase-2; D051926:Basigin; D020782:Matrix Metalloproteinases; D053504:Matrix Metalloproteinases, Membrane-Associated; D008666:Metalloendopeptidases; D019278:Matrix Metalloproteinase 3; D020778:Matrix Metalloproteinase 2; D020781:Matrix Metalloproteinase 1