Article (Scientific journals)
Host plasminogen activator inhibitor-1 promotes human skin carcinoma progression in a stage-dependent manner
Maillard, Catherine; Jost, M.; Romer, M. U. et al.
2005In Neoplasia, 7 (1), p. 57-66
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Keywords :
PAI-1; cancer invasion; tumoral angiogenesis; serine protease; protease inhibitor
Abstract :
[en] Angiogenesis and tumor expansion are associated with extracellular matrix remodeling and involve various proteases such as the plasminogen (Plg)/plasminogen activator (PA) system. Recently, several experimental data have implicated the plasminogen activator inhibitor-1 (PAI-1) in tumor angiogenesis in murine systems. However, little is known about PAI-1 functions in human skin carcinoma progression. By generating immunodeficient mice (in Rag-1(-/-) or nude background) deleted for PAI-1 gene (PAI-1(-/-)), we have evaluated the impact of host PAI-1 deficiency on the tumorigenicity of two malignant human skin keratinocyte cell lines HaCaT II-4 and HaCaT A5-RT3 forming low-grade and high-grade carcinomas, respectively. When using the surface transplantation model, angiogenesis and tumor invasion of these two cell lines are strongly reduced in PAI-1-deficient mice as compared to the wild-type control animals. After subcutaneous injection in PAI-1-/- mice, the tumor incidence is reduced for HaCaT II-4 cells, but not for those formed by HaCaT A5-RT3 cells. These data indicate that PAI-1 produced by host cells is an important contributor to earlier stages of human skin carcinoma progression. It exerts its tumor-promoting effect in a tumor stage-dependent manner, but PAI-1 deficiency is not sufficient to prevent neoplastic growth of aggressive tumors of the human skin.
Disciplines :
Oncology
Author, co-author :
Maillard, Catherine ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Jost, M.
Romer, M. U.
Brunner, N.
Houard, X.
Lejeune, Annabelle ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Biologie et génétique moléculaire
Munaut, Carine  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Bajou, Khalid ;  Université de Liège - ULiège > Département des sciences de la vie > Biologie et génétique moléculaire
Melen-Lamalle, Laurence ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Dano, K.
Carmeliet, P.
Fusenig, N. E.
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 (4 more) Less
Language :
English
Title :
Host plasminogen activator inhibitor-1 promotes human skin carcinoma progression in a stage-dependent manner
Publication date :
January 2005
Journal title :
Neoplasia
ISSN :
1522-8002
eISSN :
1476-5586
Publisher :
BC Decker, Hamilton Ont, Canada
Volume :
7
Issue :
1
Pages :
57-66
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 25 March 2009

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