Parallel Compression Is a Fast Low-Cost Assay for the High-Throughput Screening of Mechanosensory Cytoskeletal Proteins in Cells

Chunguang Miao, Eric S. Schiffhauer, Evelyn I. Okeke, Douglas Robinson, Tianzhi Luo

Research output: Contribution to journalArticlepeer-review

Abstract

Cellular mechanosensing is critical for many biological processes, including cell differentiation, proliferation, migration, and tissue morphogenesis. The actin cytoskeletal proteins play important roles in cellular mechanosensing. Many techniques have been used to investigate the mechanosensory behaviors of these proteins. However, a fast, low-cost assay for the quantitative characterization of these proteins is still lacking. Here, we demonstrate that compression assay using agarose overlay is suitable for the high throughput screening of mechanosensory proteins in live cells while requiring minimal experimental setup. We used several well-studied myosin II mutants to assess the compression assay. On the basis of elasticity theories, we simulated the mechanosensory accumulation of myosin II's and quantitatively reproduced the experimentally observed protein dynamics. Combining the compression assay with confocal microscopy, we monitored the polarization of myosin II oligomers at the subcellular level. The polarization was dependent on the ratio of the two principal strains of the cellular deformations. Finally, we demonstrated that this technique could be used on the investigation of other mechanosensory proteins.

Original languageEnglish (US)
Pages (from-to)28168-28179
Number of pages12
JournalACS Applied Materials and Interfaces
Volume9
Issue number34
DOIs
StatePublished - Aug 30 2017

Keywords

  • actin filament
  • compression
  • mechanobiology
  • mechanosensing
  • mechanosensory accumulation
  • mechanotransduction
  • myosin II

ASJC Scopus subject areas

  • Materials Science(all)

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