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Vanlaeys A, Fouquet G, Kischel P, Hague F, Pasco-Brassart S, Lefebvre T, Rybarczyk P, Dhennin-Duthille I, Brassart B, Ouadid-Ahidouch H, Gautier M. Cadmium exposure enhances cell migration and invasion through modulated TRPM7 channel expression. Arch Toxicol 2020; 94:735-747. [PMID: 32080757 DOI: 10.1007/s00204-020-02674-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 02/11/2020] [Indexed: 12/26/2022]
Abstract
Cadmium is a xenobiotic involved in neoplastic transformation. Cadmium enters the cells through divalent cation transporters including the Transient Receptor Potential Melastatin-related 7 (TRPM7) which is known to be involved in cancer cell fate. This work aimed to study the role of TRPM7 in neoplastic transformation induced by cadmium exposure in non-cancer epithelial cells. Non-cancer epithelial cells were chronically exposed to low-dose of cadmium. TRPM7 expression and function were studied by Western-Blot, Patch-Clamp and calcium and magnesium imaging. Finally, cell migration and invasion were studied by Boyden chamber assays. Chronic cadmium exposure induced TRPM7 overexpression and increased the membrane currents (P < 0.001). Cells exposed to cadmium had higher intracellular calcium and magnesium levels (P < 0.05). TRPM7 silencing restored calcium levels but strongly decreased intracellular magnesium concentration (P < 0.001). Moreover, cadmium exposure enhanced both cell migration and invasion, but TRPM7 silencing strongly decreased these features (P < 0.001). Furthermore, mammary epithelial cells exposed to cadmium became rounded and had less cell-to-cell junctions. Cadmium exposure decreased epithelial markers while the mesenchymal ones were increased. Importantly, TRPM7 silencing was able to reverse these phenotypic modifications (P < 0.05). To summarize, our data show that chronic cadmium exposure enhanced TRPM7 expression and activity in non-cancer epithelial cells. TRPM7 overexpression induced intracellular magnesium increase and stimulated cell migration and invasion. These neoplastic properties could be linked to a TRPM7-dependent epithelial-to-mesenchymal transition reprogramming in cell exposed to cadmium. These findings provide new insights into the regulation of cell fates by cadmium exposure.
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Affiliation(s)
- Alison Vanlaeys
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Grégory Fouquet
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Philippe Kischel
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Frédéric Hague
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Sylvie Pasco-Brassart
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), 51095, Amiens, France
| | - Thibaut Lefebvre
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Pierre Rybarczyk
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
- Anatomie et Cytologie Pathologiques, CHU Amiens-Picardie, Amiens, France
| | - Isabelle Dhennin-Duthille
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Bertrand Brassart
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), 51095, Amiens, France
| | - Halima Ouadid-Ahidouch
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France
| | - Mathieu Gautier
- Laboratoire de Physiologie Cellulaire et Moléculaire - UR UPJV 4667, UFR Sciences, Université de Picardie Jules Verne (UPJV), 80039, Amiens, France.
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