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Evolved Colloidosomes Undergoing Cell-like Autonomous Shape Oscillations with Buckling.

Ryota Tamate1, Takeshi Ueki2,3, Ryo Yoshida4

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|March 10, 2016
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Summary
This summary is machine-generated.

Researchers developed a cell-like hollow sphere, a colloidosome, from self-oscillating microgels. This artificial cell model exhibits complex shape oscillations, mimicking living cells

Keywords:
artificial cellscolloidosomesgelsoscillatory chemical reactionsruthenium

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Area of Science:

  • Biomimetic Materials Science
  • Soft Matter Physics
  • Chemical Engineering

Background:

  • Living systems exhibit autonomous and oscillatory phenomena essential for life, such. as cardiac contractions and respiration.
  • Microscopic oscillatory shape deformations are observed in cellular behaviors like migration and morphogenesis, often displaying complex and diverse patterns.
  • While self-oscillating polymers and gels have been developed, replicating the complex oscillatory behaviors of living cells remains a challenge.

Purpose of the Study:

  • To develop a cell-like hollow sphere, a colloidosome, capable of mimicking complex cellular shape oscillations.
  • To investigate the oscillatory behavior of colloidosomes composed of self-oscillating microgels.
  • To explore the potential of these artificial cell models in understanding biological processes.

Main Methods:

  • Fabrication of a cell-like hollow sphere (colloidosome) using self-oscillating microgels.
  • Induction of oscillatory shape and swelling/deswelling oscillations through an oscillatory chemical reaction.
  • Microscopic observation and analysis of the colloidosome's dynamic deformation patterns.

Main Results:

  • The colloidosome exhibited drastic shape oscillations and swelling/deswelling oscillations.
  • The oscillatory profile waveform was significantly more complex than conventional ones.
  • Larger colloidosomes displayed multiple buckling and moving buckling points, analogous to cellular behaviors.

Conclusions:

  • The developed colloidosome successfully mimics complex cellular shape oscillations.
  • This artificial cell model offers a new platform for studying dynamic cellular behaviors.
  • The findings contribute to the advancement of biomimetic materials and soft robotics.