Article (Scientific journals)
Down-Regulation of Vascular Endothelial Growth Factor by Tissue Inhibitor of Metalloproteinase-2: Effect on in Vivo Mammary Tumor Growth and Angiogenesis
Hajitou, Amin; Sounni, Nor Eddine; Devy, Laetitia et al.
2001In Cancer Research, 61 (8), p. 3450-7
Peer Reviewed verified by ORBi
 

Files


Full Text
Hajitou A Cancer Res 2001.pdf.pdf
Author postprint (625.17 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Abstract :
[en] The tissue inhibitor of metalloproteinases-2 (TIMP-2) has at least two independent functions, i.e., regulation of matrix metalloproteinases and growth promoting activity. We investigated the effects of TIMP-2 overexpression, induced by retroviral mediated gene transfer, on the in vivo development of mammary tumors in syngeneic mice inoculated with EF43.fgf-4 cells. The EF43.fgf-4 cells established by stably infecting the normal mouse mammary EF43 cells with a retroviral expression vector for the fgf-4 oncogene, are highly tumorigenic and overproduce vascular endothelial growth factor (VEGF). Despite a promotion of the in vitro growth rate of EF43.fgf-4 cells overexpressing timp-2, the in vivo tumor growth was delayed. At day 17 post-cell injection, the volume of tumor derived from TIMP-2-overexpressing cells was reduced by 80% as compared with that obtained with control cells. Overexpression of TIMP-2 was associated with a down-regulation of VEGF expression in vitro and in vivo, a reduction of vessel size, density, and blood supply in the induced tumors. In addition, TIMP-2 completely inhibited the angiogenic activity of EF43.fgf-4 cell-conditioned medium in vitro using a rat aortic ring model. Our findings suggest that overexpression of TIMP-2 delays growth and angiogenesis of mammary carcinoma in vivo and that down-regulation of VEGF expression may play an important role in this TIMP-2-mediated antitumoral and antiangiogenic effects. Finally the in vivo delivery of TIMP-2, as assessed by i.v. injection of recombinant adenoviruses vectors, significantly reduced the growth of the EF43.fgf-4-induced tumors. This effect of TIMP-2 was shown to be equally comparable with that of angiostatin, a known potent inhibitor of angiogenesis.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Hajitou, Amin
Sounni, Nor Eddine  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Devy, Laetitia
Grignet, Christine ;  Université de Liège - ULiège > Services administratifs généraux > Protection et hygiène du travail (SUPHT)
Lewalle, Jean-Marc
Li, Hong
Deroanne, Christophe ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Protéines et glycoprot. de matr.extracell. et membran.basal.
Lu, He
Colige, Alain ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Protéines et glycoprot. de matr.extracell. et membran.basal.
Nusgens, Betty ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques
Frankenne, Francis
Maron, Anne
Yeh, Patrice
Perricaudet, Michel
Chang, Yawen
Soria, Claudine
Calberg-Bacq, Claire-Michelle
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
More authors (9 more) Less
Language :
English
Title :
Down-Regulation of Vascular Endothelial Growth Factor by Tissue Inhibitor of Metalloproteinase-2: Effect on in Vivo Mammary Tumor Growth and Angiogenesis
Publication date :
15 April 2001
Journal title :
Cancer Research
ISSN :
0008-5472
eISSN :
1538-7445
Publisher :
American Association for Cancer Research, Inc. (AACR), Baltimore, United States - Maryland
Volume :
61
Issue :
8
Pages :
3450-7
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 May 2009

Statistics


Number of views
115 (12 by ULiège)
Number of downloads
227 (5 by ULiège)

Scopus citations®
 
99
Scopus citations®
without self-citations
77

Bibliography


Similar publications



Contact ORBi