Abstract
Mesenchymal stem cells (MSCs) are being studied extensively due to their potential as a therapeutic cell source for many load-bearing tissues. Compression of tissues and the subsequent deformation of cells are just one type physical strain MSCs will need to withstand in vivo. Mechanotransduction by MSCs and their mechanical properties are partially controlled by the cytoskeleton, including vimentin intermediate filaments (IFs). Vimentin IF deficiency has been tied to changes in mechanosensing and mechanical properties of cells in some cell types. However, how vimentin IFs contribute to MSC deformability has not been comprehensively studied. Investigating the role of vimentin IFs in MSC mechanosensing and mechanical properties will assist in functional understanding and development of MSC therapies. In this study, we examined vimentin IFs’ contribution to MSCs’ ability to deform under external deformation using RNA interference. Our results indicate that a deficient vimentin IF network decreases the deformability of MSCs, and that this may be caused by the remaining cytoskeletal network compensating for the vimentin IF network alteration. Our observations introduce another piece of information regarding how vimentin IFs are involved in the complex role the cytoskeleton plays in the mechanical properties of cells.
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Change history
02 January 2018
This erratum is to correct the following: (1) in the Western Blotting subsection under the Materials and Methods section, the concentration of protein from each sample loaded into Criterion Tris–HCl gels was incorrectly stated as 155 µg of protein. The correct value is 9.7 µg; (2) in Fig. 1b, the bar graph showed incorrect values for semi-quantitation of Western blots. Figure 1 has been updated with a corrected graph in Fig. 1b only.
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This work was supported by the National Science Foundation (CMMI 1563721, DRW; CBET 0845754, AHH).
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No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
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Associate Editor Eric M. Darling oversaw the review of this article.
A correction to this article is available online at https://doi.org/10.1007/s10439-017-1975-5.
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Sharma, P., Bolten, Z.T., Wagner, D.R. et al. Deformability of Human Mesenchymal Stem Cells Is Dependent on Vimentin Intermediate Filaments. Ann Biomed Eng 45, 1365–1374 (2017). https://doi.org/10.1007/s10439-016-1787-z
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DOI: https://doi.org/10.1007/s10439-016-1787-z