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Bórquez JC, Hidalgo M, Rodríguez JM, Montaña A, Porras O, Troncoso R, Bravo-Sagua R. Sucralose Stimulates Mitochondrial Bioenergetics in Caco-2 Cells. Front Nutr 2021; 7:585484. [PMID: 33537337 PMCID: PMC7848014 DOI: 10.3389/fnut.2020.585484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 12/18/2020] [Indexed: 12/20/2022] Open
Abstract
Sucralose is a non-caloric artificial sweetener widely used in processed foods that reportedly affects energy homeostasis through partially understood mechanisms. Mitochondria are organelles fundamental for cellular bioenergetics that are closely related to the development of metabolic diseases. Here, we addressed whether sucralose alters mitochondrial bioenergetics in the enterocyte cell line Caco-2. Sucralose exposure (0.5–50 mM for 3–24 h) increased cellular reductive power assessed through MTT assay, suggesting enhanced bioenergetics. Low doses of sucralose (0.5 and 5 mM) for 3 h stimulated mitochondrial respiration, measured through oxygraphy, and elevated mitochondrial transmembrane potential and cytoplasmic Ca2+, evaluated by fluorescence microscopy. Contrary to other cell types, the increase in mitochondrial respiration was insensitive to inhibition of mitochondrial Ca2+ uptake. These findings suggest that sucralose alters enterocyte energy homeostasis, contributing to its effects on organismal metabolism.
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Affiliation(s)
- Juan Carlos Bórquez
- Laboratorio de Investigación en Nutrición y Actividad Física, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile
| | - Miltha Hidalgo
- Laboratory for Research in Functional Nutrition, INTA, Universidad de Chile, Santiago, Chile
| | - Juan M Rodríguez
- Laboratorio de Investigación en Nutrición y Actividad Física, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile
| | - Alejandra Montaña
- Laboratorio de Investigación en Nutrición y Actividad Física, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile
| | - Omar Porras
- Laboratory for Research in Functional Nutrition, INTA, Universidad de Chile, Santiago, Chile
| | - Rodrigo Troncoso
- Laboratorio de Investigación en Nutrición y Actividad Física, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile.,Advanced Center for Chronic Diseases, Universidad de Chile, Santiago, Chile
| | - Roberto Bravo-Sagua
- Advanced Center for Chronic Diseases, Universidad de Chile, Santiago, Chile.,Laboratory of Obesity and Metabolism in Geriatrics and Adults, INTA, Universidad de Chile, Santiago, Chile.,Chile State Universities Network on Aging, Universidad de Chile, Santiago, Chile
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