Article (Scientific journals)
the metalloproteinase ADAM-12 regulates bronchial epithelial cell proliferation and apoptosis.
Rocks, Natacha; Estrella, C.; Paulissen, Geneviève et al.
2008In Cell Proliferation, 41 (6), p. 988-1001
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Abstract :
[en] Objectives: The ADAMs (a disintegrin and metalloproteinase) enzymes compose a family of membrane-bound proteins characterized by their multi-domain structure and ADAM-12 expression is elevated in human non-small cell lung cancers. The aim of this study was to investigate the roles played by ADAM-12 in critical steps of bronchial cell transformation during carcinogenesis. Materials and methods: To assess the role of ADAM-12 in tumorigenicity, BEAS-2B cells were transfected with a plasmid encoding human full-length ADAM-12 cDNA, and then the effects of ADAM-12 overexpression on cell behaviour were explored. Treatment of clones with heparin-binding epidermal growth factor (EGF)-like growth factor (HB-EGF) neutralizing antibodies as well as an EGFR inhibitor allowed the dissection of mechanisms regulating cell proliferation and apoptosis. Results: Overexpression of ADAM-12 in BEAS-2B cells promoted cell proliferation. ADAM-12 overexpressing clones produced higher quantities of HB-EGF in their culture medium which may rely on membrane-bound HB-EGF shedding by ADAM-12. Targeting HB-EGF activity with a neutralizing antibody abrogated enhanced cell proliferation in the ADAM-12 overexpressing clones. In sharp contrast, targeting of amphiregulin, EGF or transforming growth factor-α failed to influence cell proliferation; moreover, ADAM-12 transfectants were resistant to etoposide-induced apoptosis and the use of a neutralizing antibody against HB-EGF activity restored rates of apoptosis to be similar to controls. Conclusions: ADAM-12 contributes to enhancing HB-EGF shedding from plasma membranes leading to increased cell proliferation and reduced apoptosis in this bronchial epithelial cell line.
Research center :
Giga-Cancer - ULiège
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Rocks, Natacha  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Estrella, C. 
Paulissen, Geneviève ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Quesada Calvo, Florence ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques
Gilles, Christine ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Guéders, Maud ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Crahay, Céline
Foidart, Jean-Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique - Labo de biologie des tumeurs et du développement
Gosset, Ph
Noël, Agnès ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie cellulaire et moléculaire appliquée à l'homme
Cataldo, Didier  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement - Département des sciences biomédicales et précliniques
 These authors have contributed equally to this work.
Language :
English
Title :
the metalloproteinase ADAM-12 regulates bronchial epithelial cell proliferation and apoptosis.
Publication date :
2008
Journal title :
Cell Proliferation
ISSN :
0960-7722
eISSN :
1365-2184
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
41
Issue :
6
Pages :
988-1001
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 March 2009

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