Relationship between expression of matrix metalloproteinases and migration of epidermal and in vitro generated Langerhans cells.
Langerhans cells (LC) are dendritic cells that capture foreign antigens and migrate with them to the regional lymph nodes where they are presented to naive T cells. The possible role of matrix metalloproteinase-9 (MMP-9) in migration was suggested following experiments in a mouse model and in human skin explants. Using in vitro generated LC (iLC) derived from CD34+ cord blood cells and epidermal LC (eLC), we investigated the correlation between MMP-9 and other MMPs production and cell migration. Cells were activated by Bandrowski's base (BB), a chemical allergen, or by recombinant birch pollen allergen 1 (rBetv 1). Contact with allergens triggered migration of these cells, with a maximum rate being reached after 24 h. Migration was preceded by production of MMP-2 and MMP-9; part of the molecules were recovered as pro-MMPs in cell culture supernatant and part were associated with cell membrane proteins. At the cellular level, membrane-type 1 (MT1) and MT3-MMP were also identified. Addition of tumor necrosis factor-alpha (TNF-alpha) initiated pro-MMP-2 and pro-MMP-9 production followed by cell migration in a dose-dependent manner. These data imply that TNF-alpha is a key molecule for MMP production and cell migration. Furthermore, activation of iLC with BB or rBet v 1 induced synthesis of TNF-a and expression of TNF RII on the cell membrane, suggesting an autocrine loop. In conclusion, membrane-associated MMP-2 and-9 rather than soluble MMPs appear to be involved in cell migration.
Noirey
Nadège
N
INSERM Unité 346, Laboratoire de Recherche Peau Humaine et Immunité, Hĵpital Edouard Herriot, Lyon, France.
Staquet
Marie-Jeanne
MJ
Gariazzo
Marie-Jo
MJ
Serres
Mireille
M
André
Claude
C
Schmitt
Daniel
D
Vincent
Claude
C
D000485:Allergens / Q000494:pharmacology; D018952:Antigens, CD34 / Q000378:metabolism; D052179:Antigens, Plant; D001485:Basement Membrane / Q000378:metabolism; D002465:Cell Movement; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D000078404:Epidermal Cells; D004817:Epidermis / Q000378:metabolism; D005312:Fetal Blood / Q000166:cytology; D005434:Flow Cytometry; D018093:Gelatinases / Q000378:metabolism; D006801:Humans; D066298:In Vitro Techniques; D007700:Kinetics; D007801:Langerhans Cells / Q000166:cytology; D007963:Leukocytes, Mononuclear / Q000378:metabolism; D020778:Matrix Metalloproteinase 2 / Q000378:metabolism*; D020780:Matrix Metalloproteinase 9 / Q000096:biosynthesis* / Q000502:physiology*; D000090023:Metallothionein 3; D010641:Phenotype; D010655:Phenylenediamines / Q000494:pharmacology; D010940:Plant Proteins / Q000494:pharmacology; D011994:Recombinant Proteins / Q000378:metabolism; D013997:Time Factors; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
D000485:Allergens; D018952:Antigens, CD34; D052179:Antigens, Plant; D000090023:Metallothionein 3; C000715430:Mt3 protein, mouse; D010655:Phenylenediamines; D010940:Plant Proteins; D011994:Recombinant Proteins; D014409:Tumor Necrosis Factor-alpha; C061312:Bet v 1 allergen, Betula; C051597:Bandrowski's base; D018093:Gelatinases; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9