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Related Experiment Video

Updated: Apr 6, 2026

Preparation of Multifunctional Silk-Based Microcapsules Loaded with DNA Plasmids Encoding RNA Aptamers and Riboswitches
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Designing Synthetic Microcapsules That Undergo Biomimetic Communication and Autonomous Motion.

Victor V Yashin1, German V Kolmakov2, Henry Shum1

  • 1Chemical Engineering Department, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States.

Langmuir : the ACS Journal of Surfaces and Colloids
|July 29, 2015
PubMed
Summary

Synthetic microcapsules mimic early protocells, exhibiting collective motion and self-organization through autochemotaxis. These engineered objects demonstrate complex behaviors like cargo transport and community formation via chemical signaling.

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Area of Science:

  • Synthetic biology
  • Chemical engineering
  • Soft matter physics

Background:

  • Collective behavior in nature, such as slime molds, inspires synthetic systems.
  • Early protocells are hypothesized to have self-organized through simple physicochemical mechanisms.
  • Understanding self-organization is key to designing artificial life and complex materials.

Purpose of the Study:

  • To design and model synthetic cell-like objects capable of autochemotaxis and self-organization.
  • To investigate the role of self-generated chemical gradients and surface interactions in collective behavior.
  • To explore the potential for these synthetic systems to perform complex tasks and form communities.

Main Methods:

  • Computational modeling of microcapsules with permeable shells on an adhesive surface.
  • Simulation of particle diffusion from microcapsules affecting neighboring capsules and surface adhesion.
  • Analysis of emergent behaviors including collective motion, cargo transport, and stable structure formation.

Main Results:

  • Microcapsules demonstrated autochemotaxis, self-organizing in response to self-generated chemical gradients.
  • Feedback mechanisms, adhesion gradients, and hydrodynamic interactions led to collective, self-sustained motion.
  • The system successfully modeled complex behaviors like cargo pickup, transport, and targeted delivery, as well as stable triad formation.

Conclusions:

  • Synthetic microcapsules can exhibit complex collective behaviors through fundamental physicochemical principles.
  • These findings offer insights into protocell communication and community assembly.
  • The models provide a platform for designing diverse self-propelled structures with cooperative capabilities.