Article (Scientific journals)
Restricted expression of membrane type 1-matrix metalloproteinase by myofibroblasts adjacent to human breast cancer cells
Bisson, C.; Blacher, Silvia; Polette, M. et al.
2003In International Journal of Cancer, 105 (1), p. 7-13
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Keywords :
MTI-MMP; myofibroblast; cancer; stroma; alpha smooth muscle actin; MMP-2
Abstract :
[en] The membrane type-1 matrix metalloproteinase (MT1-MMP), a protease originally identified in breast carcinoma, is characterized by its capacity to activate other MMPs (MMP-2 and MMP-13) and to degrade extracellular matrix. Our study was undertaken to localize and identify the MT1-MMP expressing cells in human breast adenocarcinomas. A textural analysis of images obtained by immunohistochemistry and in situ hybridization showed precisely the co-expression of alpha smooth muscle actin (alphaSM actin) and MT1-MMP in myofibroblasts. MT1-MMP expression is confined to myofibroblasts in close contact with tumor cells. In sharp contrast, the expression of MMP-2 was more widely distributed in both alphaSM actin positive and negative cells close to and at distance from cancer cell clusters. Our in vitro observations are consistent with the higher level of MT1-MMP expression and of MMP-2 activation observed in alphaSM actin positive fibroblasts derived from breast tumors, as compared to normal breast fibroblasts. Collectively, these results implicate myofibroblasts as major producer of MT1-MMP in breast cancer and emphasize the importance of stromal-epithelial cell interactions in their progression.
Disciplines :
Oncology
Author, co-author :
Bisson, C.
Blacher, Silvia ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Polette, M.
Blanc, J. F.
Kebers, F.
Desreux, Joëlle ;  Centre Hospitalier Universitaire de Liège - CHU > Sénologie
Tetu, B.
Rosenbaum, J.
Foidart, Jean-Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique
Birembaut, P.
Noël, Agnès ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie cellulaire et moléculaire appliquée à l'homme
Language :
English
Title :
Restricted expression of membrane type 1-matrix metalloproteinase by myofibroblasts adjacent to human breast cancer cells
Publication date :
May 2003
Journal title :
International Journal of Cancer
ISSN :
0020-7136
eISSN :
1097-0215
Publisher :
Wiley Liss, Inc., New York, United States - New York
Volume :
105
Issue :
1
Pages :
7-13
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 21 August 2009

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