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• W2623990143 endingPage "20170071" @default.
• W2623990143 startingPage "20170071" @default.
• W2623990143 abstract "Mitochondrial and mechanical alterations in cells have both been shown to be hallmarks of human disease. However, little research has endeavoured to establish connections between these two essential features of cells in both functional and dysfunctional situations. In this work, we hypothesized that a specific genetic alteration in mitochondrial function known to cause human disease would trigger changes in cell mechanics. Using a previously characterized set of mitochondrial cybrid cell lines, we examined the relationship between heteroplasmy for the mitochondrial DNA (mtDNA) 3243A>G mutation, the cell cytoskeleton, and resulting cellular mechanical properties. We found that cells with increasing mitochondrial dysfunction markedly differed from one another in gene expression and protein production of various co-regulated cytoskeletal elements. The intracellular positioning and organization of actin also differed across cell lines. To explore the relationship between these changes and cell mechanics, we then measured cellular mechanical properties using atomic force microscopy and found that cell stiffness correlated with gene expression data for known determinants of cell mechanics, γ-actin, α-actinin and filamin A. This work points towards a mechanism linking mitochondrial genetics to single-cell mechanical properties. The transcriptional and structural regulation of cytoskeletal components by mitochondrial function may explain why energetic and mechanical alterations often coexist in clinical conditions." @default.
• W2623990143 created "2017-06-15" @default.
• W2623990143 creator A5031018148 @default.
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• W2623990143 date "2017-06-01" @default.
• W2623990143 modified "2023-10-17" @default.
• W2623990143 title "Mitochondrial DNA 3243A>G heteroplasmy is associated with changes in cytoskeletal protein expression and cell mechanics" @default.
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• W2623990143 doi "https://doi.org/10.1098/rsif.2017.0071" @default.
• W2623990143 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5493791" @default.
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