Article (Scientific journals)
Expression of membrane type 1 matrix metalloproteinase (MT1-MMP) in A2058 melanoma cells is associated with MMP-2 activation and increased tumor growth and vascularization
Sounni, Nor Eddine; Baramova, Eugénia; Munaut, Carine et al.
2002In International Journal of Cancer, 98 (1), p. 23-28
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Keywords :
MT1-AWP; pericellular proteolysis; tumor growth; angiogenesis
Abstract :
[en] Membrane-type metalloproteinase-1 (MT1-MMP) is a transmembrane metalloproteinase overexpressed in tumors, which plays a major role in the first step of pro-MMP-2 activation, leading to the generation of an intermediate 62 kDa species. The second step of MMP-2 activation that yields to the mature form is less understood and could involve an autocatalytic process and/or the activity of the plasminogen/plasmin system. Human melanoma A2058 cells, which express MMP-2 only in its pro-form, were used to determine the role of MT1-MMP during pericellular proteolysis and tumor progression. The induction of MT1-MMP overexpression by MT1-MMP cDNA transfection initiated the first step of MMP-2 activation. We provide evidence that a cooperation between the plasminogen/plasmin system and MT1-MMP endowed the cells with the ability to fully activate MMP-2 and with enhanced invasive properties in vitro. When injected subcutaneously in nude mice, MT1-MMP expressing clones induced rapid tumor growth and high tumor vascularization, while the control clones were poorly or not tumorigenic. Our data provide the first demonstration, in an experimental model, that MT1-MMP expression by tumor cells promotes tumor vascularization.
Disciplines :
Oncology
Author, co-author :
Sounni, Nor Eddine  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Baramova, Eugénia
Munaut, Carine  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Maquoi, Erik  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Frankenne, Francis 
Foidart, Jean-Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique - Labo de biologie des tumeurs et du développement
Noël, Agnès ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie cellulaire et moléculaire appliquée à l'homme
Language :
English
Title :
Expression of membrane type 1 matrix metalloproteinase (MT1-MMP) in A2058 melanoma cells is associated with MMP-2 activation and increased tumor growth and vascularization
Publication date :
01 March 2002
Journal title :
International Journal of Cancer
ISSN :
0020-7136
eISSN :
1097-0215
Publisher :
Wiley Liss, Inc., New York, United States - New York
Volume :
98
Issue :
1
Pages :
23-28
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 May 2010

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