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Biomimetic Metal Bridging Drives Dynamic Protocell-to-Tissue Transitions.

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This summary is machine-generated.

Researchers created dynamic prototype tissues from individual protocells using mineralization. This breakthrough mimics microbial organization, enabling controllable assembly and dynamic regulation for advanced applications.

Keywords:
biomimetic mineralizationcoacervatemicrobial mineralizationprotocellsprototissue

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Area of Science:

  • Biomimetic materials science
  • Synthetic biology
  • Chemical engineering

Background:

  • Bottom-up construction of protocell and prototissue systems faces challenges in controlled assembly and dynamic regulation.
  • Mimicking natural mineralization processes in microorganisms offers a strategy for achieving ordered group organization.

Purpose of the Study:

  • To develop a method for assembling functionalized protocells into dynamic prototype tissues with spatial order and collective behavior.
  • To achieve dynamic regulation in prototype tissues inspired by microbial mineralization.
  • To provide a platform for intelligent drug delivery and tissue engineering.

Main Methods:

  • Construction of DOPC@ATP/PDDA protocells surface-modified with DSPE-PEG-ALN (DPA).
  • Utilizing multivalent metal ions as molecular bridges for spontaneous protocell aggregation into prototissues.
  • Surface mineralization to form a nanoscale phosphate crystal layer, reducing membrane fluidity while maintaining semipermeability.
  • Embedding glucose oxidase/urease within protocells for enzyme-mediated internal chemical reactions and local pH regulation.

Main Results:

  • Successful assembly of individual protocells into dynamic response-type prototype tissues.
  • Formation of a nanoscale phosphate crystal layer at the protocell interface through surface mineralization.
  • Demonstration of reversible cycles of protocells and prototissues triggered by internal pH regulation.
  • Prototype tissues exhibited group intelligent regulation behavior via inorganic/organic interfaces.

Conclusions:

  • The study achieved a significant advancement from individual protocells to dynamic prototype tissues using a mineralization-inspired approach.
  • The developed prototissue model successfully reproduces microbial group organization and intelligent regulation.
  • This work offers a promising platform for developing intelligent drug delivery systems, tissue engineering materials, and understanding early life transitions.