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Vergara D, Ferraro MM, Cascione M, del Mercato LL, Leporatti S, Ferretta A, Tanzarella P, Pacelli C, Santino A, Maffia M, Cocco T, Rinaldi R, Gaballo A. Cytoskeletal Alterations and Biomechanical Properties of parkin-Mutant Human Primary Fibroblasts. Cell Biochem Biophys 2016; 71:1395-404. [PMID: 25399302 DOI: 10.1007/s12013-014-0362-1] [Citation(s) in RCA: 18] [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] [Indexed: 11/25/2022]
Abstract
Parkinson's disease (PD) is one of the most common neurodegenerative diseases. Genes which have been implicated in autosomal-recessive PD include PARK2 which codes for parkin, an E3 ubiquitin ligase that participates in a variety of cellular activities. In this study, we compared parkin-mutant primary fibroblasts, from a patient with parkin compound heterozygous mutations, to healthy control cells. Western blot analysis of proteins obtained from patient's fibroblasts showed quantitative differences of many proteins involved in the cytoskeleton organization with respect to control cells. These molecular alterations are accompanied by changes in the organization of actin stress fibers and biomechanical properties, as revealed by confocal laser scanning microscopy and atomic force microscopy. In particular, parkin deficiency is associated with a significant increase of Young's modulus of null-cells in comparison to normal fibroblasts. The current study proposes that parkin influences the spatial organization of actin filaments, the shape of human fibroblasts, and their elastic response to an external applied force.
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Affiliation(s)
- Daniele Vergara
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
- Laboratory of Clinical Proteomic, ''Giovanni Paolo II'' Hospital, ASL-Lecce, Italy
| | - Marzia M Ferraro
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
- Institute of Nanoscience-NNL, CNR, Via Arnesano, 16, Lecce, 73100, Italy
| | - Mariafrancesca Cascione
- Institute of Nanoscience-NNL, CNR, Via Arnesano, 16, Lecce, 73100, Italy
- Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, Lecce, Italy
| | | | - Stefano Leporatti
- Institute of Nanoscience-NNL, CNR, Via Arnesano, 16, Lecce, 73100, Italy
| | - Anna Ferretta
- Department of Basic Medical Sciences, Neurosciences and Organs of Senses, University of Bari 'A. Moro', Bari, Italy
| | - Paola Tanzarella
- Department of Basic Medical Sciences, Neurosciences and Organs of Senses, University of Bari 'A. Moro', Bari, Italy
| | - Consiglia Pacelli
- Department of Pharmacology, Faculty of Medicine, Universitè de Montreal, 2900 Boulevard Edouard-Montpetit, Montreal, QC, H3T1J4, Canada
| | - Angelo Santino
- Institute of Science of Food Production, CNR, Lecce, Italy
| | - Michele Maffia
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy
- Laboratory of Clinical Proteomic, ''Giovanni Paolo II'' Hospital, ASL-Lecce, Italy
| | - Tiziana Cocco
- Department of Basic Medical Sciences, Neurosciences and Organs of Senses, University of Bari 'A. Moro', Bari, Italy
| | - Ross Rinaldi
- Institute of Nanoscience-NNL, CNR, Via Arnesano, 16, Lecce, 73100, Italy
- Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, Lecce, Italy
| | - Antonio Gaballo
- Institute of Nanoscience-NNL, CNR, Via Arnesano, 16, Lecce, 73100, Italy.
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