Structural and morphological changes of breast cancer cells induced by iron(II) complexes.
Fiche publication
Date publication
février 2022
Journal
Nanoscale
Auteurs
Membres identifiés du Cancéropôle Est :
Dr FRANCIUS Grégory, Pr GRANDEMANGE Stéphanie
Tous les auteurs :
Nel J, Siniscalco D, Hognon C, Bouché M, Touche N, Brunner É, Gros PC, Monari A, Grandemange S, Francius G
Lien Pubmed
Résumé
Metal-based complexes are well-established cancer chemotherapeutic drug candidates. Although our knowledge regarding their exact activity toxicity profile is incomplete, changes in cell membrane biophysical properties and cytoskeletal structures have been implicated as part of the mechanism of action. Thus, in this work, we characterised the effects of iron(II)-based complexes on the structural and morphological properties of epithelial non-tumorigenic (MCF 10A) and tumorigenic (MDA-MB-231) breast cell lines using atomic force microscopy (AFM), flow cytometry and immunofluorescence microscopy. At 24 h of exposure, both the MCF 10A and MDA-MB-231 cells experienced a cell softening, and an increase in size followed by a re-stiffening at 96 h. In addition, the triple negative breast cancer cell line, MDA-MB-231, sustained a notable cytoskeletal and mitochondrial reorganization with increased actin stress fibers and cell-to-cell communication structures. An extensive all-atom molecular dynamic simulation suggests a possible direct and unassisted internalization of the metallodrug candidate, and confirmed that the cellular effects could not be ascribed to the simple physical interaction of the iron-based complexes with the biological membrane. These observations provide an insight into a link between the mechanisms of action of such iron-based complexes as anti-cancer treatment and cytoskeletal architecture.
Référence
Nanoscale. 2022 Feb 3;: