1
|
Mignani S, El Brahmi N, Eloy L, Poupon J, Nicolas V, Steinmetz A, El Kazzouli S, Bousmina MM, Blanchard-Desce M, Caminade AM, Majoral JP, Cresteil T. Anticancer copper(II) phosphorus dendrimers are potent proapoptotic Bax activators. Eur J Med Chem 2017; 132:142-156. [PMID: 28350998 DOI: 10.1016/j.ejmech.2017.03.035] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 03/16/2017] [Accepted: 03/18/2017] [Indexed: 12/21/2022]
Abstract
A multivalent phosphorus dendrimer 1G3 and its corresponding Cu-complex, 1G3-Cu have been recently identified as agents retaining high antiproliferative potency. This antiproliferative capacity was preserved in cell lines overexpressing the efflux pump ABC B1, whereas cross-resistance was observed in ovarian cancer cell lines resistant to cisplatin. Theoretical 3D models were constructed: the dendrimers appear as irregularly shaped disk-like nano-objects of about 22 Å thickness and 49 Å diameter, which accumulated in cells after penetration by endocytosis. To get insight in their mode of action, cell death pathways have been examined in human cancer cell lines: early apoptosis was followed by secondary necrosis after multivalent phosphorus dendrimers exposure. The multivalent plain phosphorus dendrimer 1G3 moderately activated caspase-3 activity, in contrast with the multivalent Cu-conjugated phosphorus dendrimer 1G3-Cu which strikingly reduced the caspase-3 content and activity. This decrease of caspase activity is not related to the presence of copper, since inorganic copper has no or little effect on caspase-3. Conversely the potent apoptosis activation could be related to a noticeable translocation of Bax to the mitochondria, resulting in the release of AIF into the cytosol, its translocation to the nucleus and a severe DNA fragmentation, without alteration of the cell cycle. The multivalent Cu-conjugated phosphorus dendrimer is more efficient than its non-complexed analog to activate this pathway in close relationship with the higher antiproliferative potency. Therefore, this multivalent Cu-conjugated phosphorus dendrimer 1G3-Cu can be considered as a new and promising first-in-class antiproliferative agent with a distinctive mode of action, inducing apoptosis tumor cell death through Bax activation pathway.
Collapse
Affiliation(s)
- Serge Mignani
- Université Paris Descartes, PRES Sorbonne Paris Cité, CNRS UMR 860, Laboratoire de Chimie et de Biochimie pharmacologiques et toxicologiques, 45, rue des Saints Pères, 75006 Paris, France.
| | - Nabil El Brahmi
- Euromed Research Institute, Euro-Mediterranean University of Fes (UEMF), Route de Meknes, 30000, Fès, Morocco; Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France; Université de Toulouse UPS, INPT, F 31077 Toulouse Cedex 4, France
| | - Laure Eloy
- ICSN-CNRS UPR 2301, Avenue de la Terrasse, 91198 Gif sur Yvette, France
| | - Joel Poupon
- Laboratoire de Toxicologie Biologique, Hôpital Lariboisière, 75475 Paris Cedex 10, France
| | - Valérie Nicolas
- IPSIT, Faculté de Pharmacie, Université Paris Sud, 92290 Chatenay-Malabry, France
| | - Anke Steinmetz
- Sanofi R&D, LGCR, Centre de Recherche Vitry-Alfortville, 94403 Vitry-sur-Seine Cedex, France
| | - Said El Kazzouli
- Euromed Research Institute, Euro-Mediterranean University of Fes (UEMF), Route de Meknes, 30000, Fès, Morocco
| | - Mosto M Bousmina
- Euromed Research Institute, Euro-Mediterranean University of Fes (UEMF), Route de Meknes, 30000, Fès, Morocco
| | - Mireille Blanchard-Desce
- Institut des Sciences Moléculaires, UMR 5255, Université de Bordeaux, 351 cours de la Libération, Talence, France
| | - Anne-Marie Caminade
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France; Université de Toulouse UPS, INPT, F 31077 Toulouse Cedex 4, France
| | - Jean-Pierre Majoral
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France; Université de Toulouse UPS, INPT, F 31077 Toulouse Cedex 4, France.
| | - Thierry Cresteil
- ICSN-CNRS UPR 2301, Avenue de la Terrasse, 91198 Gif sur Yvette, France; IPSIT, Faculté de Pharmacie, Université Paris Sud, 92290 Chatenay-Malabry, France.
| |
Collapse
|
11
|
Ozutsumi K, Ishiguro SI, Ohtaki H. An X-Ray Diffraction Study on the Structures of Monochloropentakis(N,N-dimethylformamide)copper(II), Trichloromono(N,N-dimethylformamide) and Tetrachlorocuprate(II) Complexes inN,N-Dimethylformamide. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1988. [DOI: 10.1246/bcsj.61.715] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|