Article (Scientific journals)
MT1-MMP expression promotes tumor growth and angiogenesis through an up-regulation of vascular endothelial growth factor expression
Sounni, Nor Eddine; Devy, L.; Hajitou, A. et al.
2002In FASEB Journal, 16 (6), p. 555-564
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Keywords :
matrix metalloproteinases; MCF7 cells; MT1-MMP overexpression; VEGF
Abstract :
[en] Membrane type 1 metalloprotease (MT1-MMP) is a transmembrane metalloprotease that plays a major role in the extracellular matrix remodeling, directly by degrading several of its components and indirectly by activating pro-MMP2. We investigated the effects of MT1-MMP overexpression on in vitro and in vivo properties of human breast adenocarcinoma MCF7 cells, which do not express MT1-MMP or MMP-2. MT1-MMP and MMP-2 cDNAs were either transfected alone or cotransfected. All clones overexpressing MT1-MMP 1) were able to activate endogenous or exogenous pro-MMP-2, 2) displayed an enhanced in vitro invasiveness through matrigel-coated filters independent of MMP-2 transfection, 3) induced the rapid development of highly vascularized tumors when injected subcutaneously in nude mice, and 4) promoted blood vessels sprouting in the rat aortic ring assay. These effects were observed in all clones overexpressing MT1-MMP regardless of MMP-2 expression levels, suggesting that the production of MMP-2 by tumor cells themselves does not play a critical role in these events. The angiogenic phenotype of MT1-MMP-producing cells was associated with an up-regulation of VEGF expression. These results emphasize the importance of MT1-MMP during tumor angiogenesis and open new opportunities for the development of anti-angiogenic strategies combining inhibitors of MT1-MMP and VEGF antagonists.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Sounni, Nor Eddine  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Devy, L.
Hajitou, A.
Frankenne, Francis
Munaut, Carine  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Gilles, Christine ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Deroanne, Christophe ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Protéines et glycoprot. de matr.extracell. et membran.basal.
Thompson, E. W.
Foidart, Jean-Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique
Noël, Agnès ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie cellulaire et moléculaire appliquée à l'homme
Language :
English
Title :
MT1-MMP expression promotes tumor growth and angiogenesis through an up-regulation of vascular endothelial growth factor expression
Publication date :
April 2002
Journal title :
FASEB Journal
ISSN :
0892-6638
eISSN :
1530-6860
Publisher :
Federation of American Society for Experimental Biology, Bethesda, United States - Maryland
Volume :
16
Issue :
6
Pages :
555-564
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 25 March 2009

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