Cell rheology: Mush rather than machine

Enhua H. Zhou, Fernando D. Martinez, Jeffrey J. Fredberg

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

One key function of the eukaryotic cell is deformability, which is well characterized phenomenologically yet remains poorly understood fundamentally. The cell's nucleus, which is stiffer than the cytoskeleton, also shares some of these same features. Importantly, it is well recognized that these elastic cellular structures are porous and dispersed in water, which is of course the principal cellular constituent. Still, although the implications of water flow on cellular mechanics are known to be important, the underlying mechanism has never been clear. Clearly, had the cell's cytoskeleton been much softer than that of the mat, it would have been mechanically impossible for the cell to penetrate into it. On the other hand, a cytoskeleton that is substantially stiffer would have made motility within the mat metabolically wasteful. Efficient motility, therefore, should favor the adaptation of the cell's mechanical properties to match those of the energy-rich mush.

Original languageEnglish (US)
Pages (from-to)184-185
Number of pages2
JournalNature materials
Volume12
Issue number3
DOIs
StatePublished - Mar 2013

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ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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