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Coordinate Enhancement of Gelatinase a Mrna and Activity Levels in Human Fibroblasts in Response to Breast-Adenocarcinoma Cells
Noël, Agnès; Polette, M.; Lewalle, J. M. et al.
1994In International Journal of Cancer, 56 (3), p. 331-6
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Abstract :
[en] Gelatinases/type-IV collagenases are metalloproteinases involved in some carcinoma invasion and metastatic processes. The exact cellular source of the 72-kDa gelatinase A is controversial. We have analyzed the expression of mRNA coding for gelatinase A in vivo by in situ hybridization on breast-cancer tissues. The mRNA for gelatinase A was present in fibroblasts. We have therefore evaluated the gelatinase-A activity in vitro, in co-cultures of different breast adenocarcinoma cell lines and human fibroblasts. In monoculture, none of the tumor cells tested produced detectable amounts of gelatinase A. The gelatinase-A activity was enhanced in cultures of fibroblasts maintained in the presence of MDA-MB 231 or SKBR3 cells, or their conditioned medium. This increased enzymatic activity was evidenced both in the culture medium and in the membrane fraction and was paralleled by enhancement of the steady-state levels of mRNA. These results are an in vitro demonstration of a regulation of fibroblasts gelatinase-A production by soluble factors secreted by breast-tumor cells.
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Noël, Agnès ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie cellulaire et moléculaire appliquée à l'homme
Polette, M.
Lewalle, J. M.
Munaut, Carine  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Emonard, H. P.
Birembaut, P.
Foidart, Jean-Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique
Language :
English
Title :
Coordinate Enhancement of Gelatinase a Mrna and Activity Levels in Human Fibroblasts in Response to Breast-Adenocarcinoma Cells
Publication date :
01 February 1994
Journal title :
International Journal of Cancer
ISSN :
0020-7136
eISSN :
1097-0215
Publisher :
John Wiley & Sons, Hoboken, United States - New York
Volume :
56
Issue :
3
Pages :
331-6
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 March 2009

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