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Light-based juxtacrine signaling between synthetic cells.

Hossein Moghimianavval1, Kyle J Loi2,3, Sung-Won Hwang4

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Researchers engineered light-activated, contact-dependent signaling for synthetic cells. This breakthrough enables complex communication, mimicking natural juxtacrine signaling and expanding synthetic biology capabilities.

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Area of Science:

  • Synthetic biology
  • Cellular communication
  • Biophysics

Background:

  • Cell-cell contact is crucial for biological processes like development and immune response.
  • Current synthetic cell communication relies on diffusible signals, limiting response complexity.
  • Engineering contact-dependent signaling is key to advanced synthetic cell functions.

Purpose of the Study:

  • To design and demonstrate a light-activated contact-dependent communication tool for synthetic cells.
  • To enable synthetic cells to communicate through direct physical contact, mimicking juxtacrine signaling.
  • To create a modular platform for engineering diverse contact-dependent signaling mechanisms.

Main Methods:

  • Utilized a split bioluminescent protein for contact-specific signal generation.
  • Employed a photoswitchable protein for signal reception in adjacent synthetic cells.
  • Developed a light-activated system to control intercellular communication initiation.

Main Results:

  • Successfully demonstrated contact-dependent communication between synthetic cells.
  • Showcased light-activation as a trigger for intercellular signaling at contact interfaces.
  • Established a modular design enabling orthogonal signaling pathway engineering.

Conclusions:

  • Engineered a novel light-activated, contact-dependent communication system for synthetic cells.
  • This tool expands synthetic cell communication beyond diffusible signals.
  • The modular platform facilitates the development of sophisticated synthetic cell consortia.