Cited by 34Cellular Mechanics and InteractionsMicrofluidic and Bio-sensing TechnologiesForce Microscopy Techniques and Applications

Characterizing Cellular Biophysical Responses to Stress by Relating Density, Deformability, and Size

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Byun, Sangwon, Hecht, Vivian C., Manalis, Scott R.·2015·Biophysical Journal

Abstract

Cellular physical properties are important indicators of specific cell states. Although changes in individual biophysical parameters, such as cell size, density, and deformability, during cellular processes have been investigated in great detail, relatively little is known about how they are related. Here, we use a suspended microchannel resonator (SMR) to measure single-cell density, volume, and passage time through a narrow constriction of populations of cells subjected to a variety of environmental stresses. Osmotic stress significantly affects density and volume, as previously shown. In contrast to density and volume, the effect of an osmotic challenge on passage time is relatively small. Deformability, as determined by comparing passage times for cells with similar volume, exhibits a strong dependence on osmolarity, indicating that passage time alone does not always provide a meaningful proxy for deformability. Finally, we find that protein synthesis inhibition, cell-cycle arrest, protein kinase inhibition, and cytoskeletal disruption result in unexpected relationships among deformability, density, and volume. Taken together, our results suggest that by measuring multiple biophysical parameters, one can detect unique characteristics that more specifically reflect cellular behaviors.

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  1. [4]4. [Weaver, W. M., P. Tseng, . , D. Di Carlo. 2014. Advances in highthroughput single-cell microtechnologies. Curr. Opin. Biotechnol. 25:114-123.](http://refhub.elsevier.com/S0006-3495(15)00894-2/sref4)
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Authors
Byun, S., Hecht, V. C., & Manalis, S. R.
Affiliations
  • Koch Institute for Integrative Cancer Research At MIT (US)
  • Massachusetts Institute of Technology (US)
Corresponding author
Manalis, Scott R.
Venue
Biophysical Journal
Publisher
Elsevier BV
Published
2015-10
Volume
109
Issue
8
Pages
1565-1573
ISSN
0006-3495 (ISSN-L)
OpenAlex
W1794742234
Cited by
34
References
67
Citations by year
2025: 4 · 2024: 3 · 2023: 3 · 2022: 7 · 2021: 4 · 2020: 4 · 2019: 3 · 2018: 1 · 2017: 2 · 2016: 3
FWCI
1.07
Type
journal article
Language
en
Open access
Locations
  • Biophysical Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc-nd)
Funders
  • U.S. Public Health Service (26697290-47281-A)
  • National Cancer Institute (U54CA143874, U54CA151459)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Bio-sensing Technologies
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Force Microscopy Techniques and Applications
Keywords
cell deformability, cell density, cell volume, osmotic stress, suspended microchannel resonators, passage time, cell size, protein synthesis inhibition, cell cycle arrest, protein kinase inhibition, cytoskeleton disruption, cellular stress response
MeSH terms
Animals, Cell Line, Liver, Osmotic Pressure, Stress, Physiological, Microfluidics, Microfluidic Analytical Techniques, Cell Size, Mice

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