Chlorpyrifos induces cell proliferation in MCF-7 and MDA-MB-231 cells, through cholinergic and Wnt/β-catenin signaling disruption, AChE-R upregulation and oxidative stress generation after single and repeated treatment

Moyano-Cires Ivanoff, Paula VivianaGarcía Sánchez, José ManuelGarcía Lobo, JimenaPelayo Alarcón, AdelaMuñoz-Calero, PilarFrejo Moya, María TeresaAnadón Baselga, María JoséNaval López, María VictoriaFlores, AndreaMirat, Vega AlejandraPino Sans, Javier Del2025-01-282025-01-282021-04-27Moyano, P., García, J. M., García, J., Pelayo, A., Muñoz-Calero, P., Frejo, M. T., ... & Del Pino, J. (2021). Chlorpyrifos induces cell proliferation in MCF-7 and MDA-MB-231 cells, through cholinergic and Wnt/β-catenin signaling disruption, AChE-R upregulation and oxidative stress generation after single and repeated treatment. Food and Chemical Toxicology, 152, 112241.0278-691510.1016/j.fct.2021.112241https://hdl.handle.net/20.500.14352/116619Author contributions: Paula Moyano: Methodology, Investigation, Writing – original draft, Writing – review & editing. José Manuel García: Methodology, Investigation, Validation, Writing – review & editing. Jimena García: Investigation, Validation. Adela Pelayo: Resources, Supervision. Pilar Muñoz-Calero: Funding acquisition, Visualization. María Teresa Frejo: Formal analysis, Writing – review & editing. Maria Jose Anadon: Methodology, Data curation, Writing – review & editing. Maria Victoria Naval: Investigation, Formal analysis, Data curation. Andrea Flores: Investigation, Writing – review & editing. Vega Alejandra Mirat: Investigation, Writing – review & editing. Javier Del Pino: Conceptualization, Methodology, Project administration, Supervision, Writing – review & editing.Chlorpyrifos (CPF) biocide, is associated with breast cancer. The processes underlying this association have not been elucidated to date. CPF increases MCF-7 and MDA-MB-231 cell proliferation after acute and long-term treatment, partially through KIAA1363 overexpression and aryl-hydrocarbon receptor activation but also through estrogen receptor-alpha activation after 24 h exposure in MCF-7 cells, suggesting other mechanisms may be involved. CPF induces reactive oxygen species (ROS) generation, acetylcholine accumulation, and overexpression of acetylcholinesterase-R/S (AChE-R/S) variants, while it also alters the Wnt/β-catenin pathway, both in vitro and in vivo, in processes different from cancer. These latter mechanisms are also linked to cell proliferation and could mediate this effect induced by CPF. Our results show that CPF (0.01–100 μM), following one-day and fourteen-days treatment, respectively, induced ROS generation and lipid peroxidation, and acetylcholine accumulation due to AChE inhibition, Wnt/β-catenin up- or downregulation depending on the CPF treatment concentration, and AChE-R and AChE-S overexpression, with the latter being mediated through GSK-3β activity alteration. Finally, CPF promoted cell division through ACh and ROS accumulation, AChE-R overexpression, and Wnt/β-catenin signaling disruption. Our results provide novel information on the effect of CPF on human breast cancer cell lines that may help to explain its involvement in breast cancer.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalcreativecommons.org/licenses/by/4.0/Chlorpyrifos induces cell proliferation in MCF-7 and MDA-MB-231 cells, through cholinergic and Wnt/β-catenin signaling disruption, AChE-R upregulation and oxidative stress generation after single and repeated treatmentjournal articlehttps://doi.org/10.1016/j.fct.2021.112241restricted access615.9616-006.04MCF-7MDA-MB-231ChlorpyrifosWnt/β-CateninROSAChE variantsToxicología (Medicina)Oncología3214 Toxicología3209.90 Farmacología Experimental