Genomic Instability Is an Early Event in Aluminium-Induced Tumorigenesis |
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| Authors: | Stefano J. Mandriota,Mirna Tenan,Adeline Nicolle,Julia D. Jankowska,Paolo Ferrari,Jean-Christophe Tille,Mary-Anne Durin,Catherine M. Green,Sebastien Tabruyn,Daniela Moralli,Andr -Pascal Sappino |
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| Affiliation: | 1.Laboratoire de Cancérogenèse Environnementale, Fondation des Grangettes, 1224 Chêne-Bougeries, Switzerland; (M.T.); (A.N.); (P.F.); (A.-P.S.);2.Wellcome Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK; (J.D.J.); (M.-A.D.); (C.M.G.); (D.M.);3.Department of Pathology, Geneva University Hospital, 1205 Geneva, Switzerland;4.TransCure bioServices, 74160 Archamps, France; |
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| Abstract: | Genomic instability is generally considered as a hallmark of tumorigenesis and a prerequisite condition for malignant transformation. Aluminium salts are suspected environmental carcinogens that transform mammary epithelial cells in vitro through unknown mechanisms. We report here that long-term culture in the presence of aluminium chloride (AlCl3) enables HC11 normal mouse mammary epithelial cells to form tumours and metastases when injected into the syngeneic and immunocompetent BALB/cByJ strain. We demonstrate that AlCl3 rapidly increases chromosomal structural abnormalities in mammary epithelial cells, while we failed to detect direct modulation of specific mRNA pathways. Our observations provide evidence that clastogenic activity—a well-recognized inducer of genomic instability—might account in part for the transforming abilities of aluminium in mammary epithelial cells. |
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| Keywords: | aluminium breast cancer carcinogenesis genomic instability clastogens |
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