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Pérez-Arancibia R, Ordoñez JL, Rivas A, Pihán P, Sagredo A, Ahumada U, Barriga A, Seguel I, Cárdenas C, Vidal RL, Hetz C, Delporte C. A phenolic-rich extract from Ugni molinae berries reduces abnormal protein aggregation in a cellular model of Huntington's disease. PLoS One 2021; 16:e0254834. [PMID: 34324551 PMCID: PMC8320977 DOI: 10.1371/journal.pone.0254834] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 07/02/2021] [Indexed: 12/21/2022] Open
Abstract
Accumulation of misfolded proteins in the brain is a common hallmark of most age-related neurodegenerative diseases. Previous studies from our group identified the presence of anti-inflammatory and antioxidant compounds in leaves derived from the Chilean berry Ugni molinae (murtilla), in addition to show a potent anti-aggregation activity in models of Alzheimer´s disease. However, possible beneficial effects of berry extracts of murtilla was not investigated. Here we evaluated the efficacy of fruit extracts from different genotypes of Chilean-native U. molinae on reducing protein aggregation using cellular models of Huntington´s disease and assess the correlation with their chemical composition. Berry extraction was performed by exhaustive maceration with increasing-polarity solvents. An unbiased automatic microscopy platform was used for cytotoxicity and protein aggregation studies in HEK293 cells using polyglutamine-EGFP fusion proteins, followed by secondary validation using biochemical assays. Phenolic-rich extracts from murtilla berries of the 19–1 genotype (ETE 19–1) significantly reduced polyglutamine peptide aggregation levels, correlating with the modulation in the expression levels of autophagy-related proteins. Using LC-MS and molecular network analysis we correlated the presence of flavonoids, phenolic acids, and ellagitannins with the protective effects of ETE 19–1 effects on protein aggregation. Overall, our results indicate the presence of bioactive components in ethanolic extracts from U. molinae berries that reduce the load of protein aggregates in living cells.
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Affiliation(s)
- Rodrigo Pérez-Arancibia
- Laboratorio de Productos Naturales, Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
- Instituto de Neurociencia Biomédica (BNI), Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Centro FONDAP de Gerociencia, Salud Mental y Metabolismo (GERO), Santiago, Chile
- Centro de Biología Integrativa, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Jose Luis Ordoñez
- Laboratorio de Productos Naturales, Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
- Laboratorio de Química Inorgánica y Analítica, Departamento de Química Inorgánica y Analítica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Alexis Rivas
- Instituto de Neurociencia Biomédica (BNI), Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Centro FONDAP de Gerociencia, Salud Mental y Metabolismo (GERO), Santiago, Chile
- Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Universidad de Chile, Santiago, Chile
| | - Philippe Pihán
- Instituto de Neurociencia Biomédica (BNI), Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Centro FONDAP de Gerociencia, Salud Mental y Metabolismo (GERO), Santiago, Chile
- Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Universidad de Chile, Santiago, Chile
| | - Alfredo Sagredo
- Instituto de Neurociencia Biomédica (BNI), Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Centro FONDAP de Gerociencia, Salud Mental y Metabolismo (GERO), Santiago, Chile
- Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Universidad de Chile, Santiago, Chile
| | - Ulises Ahumada
- Centro FONDAP de Gerociencia, Salud Mental y Metabolismo (GERO), Santiago, Chile
- Centro de Biología Integrativa, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Andrés Barriga
- Unidad de Espectrometría de Masas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Ivette Seguel
- Laboratorio de Productos Naturales, Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - César Cárdenas
- Centro FONDAP de Gerociencia, Salud Mental y Metabolismo (GERO), Santiago, Chile
- Centro de Biología Integrativa, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA, United States of America
- Buck Institute for Research on Aging, Novato, California, United States of America
| | - Rene L. Vidal
- Instituto de Neurociencia Biomédica (BNI), Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Centro FONDAP de Gerociencia, Salud Mental y Metabolismo (GERO), Santiago, Chile
- Centro de Biología Integrativa, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Claudio Hetz
- Instituto de Neurociencia Biomédica (BNI), Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Centro FONDAP de Gerociencia, Salud Mental y Metabolismo (GERO), Santiago, Chile
- Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Universidad de Chile, Santiago, Chile
- Buck Institute for Research on Aging, Novato, California, United States of America
- * E-mail: , (CH); (CD)
| | - Carla Delporte
- Laboratorio de Productos Naturales, Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
- * E-mail: , (CH); (CD)
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