Annals of Biomedical Engineering

, Volume 45, Issue 5, pp 1365–1374

Deformability of Human Mesenchymal Stem Cells Is Dependent on Vimentin Intermediate Filaments

  • Poonam Sharma
  • Zachary T. Bolten
  • Diane R. Wagner
  • Adam H. Hsieh
Article

DOI: 10.1007/s10439-016-1787-z

Cite this article as:
Sharma, P., Bolten, Z.T., Wagner, D.R. et al. Ann Biomed Eng (2017) 45: 1365. doi:10.1007/s10439-016-1787-z
  • 325 Downloads

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.

Keywords

Cytoskeleton Cell deformation RNA interference Mechanotransduction 

Funding information

Funder NameGrant NumberFunding Note
National Science Foundation
  • CBET 0845754
  • CMMI 1563721

Copyright information

© Biomedical Engineering Society 2017

Authors and Affiliations

  • Poonam Sharma
    • 1
  • Zachary T. Bolten
    • 1
  • Diane R. Wagner
    • 2
  • Adam H. Hsieh
    • 1
    • 3
  1. 1.Fischell Department of BioengineeringUniversity of MarylandCollege ParkUSA
  2. 2.Indiana University-Purdue University IndianapolisIndianapolisUSA
  3. 3.Department of OrthopaedicsUniversity of MarylandBaltimoreUSA

Personalised recommendations