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Researchers created synthetic bone-like tissues using inorganic protocells and organic networks. These adaptable materials enable controlled calcification and remodeling, advancing biomimetic materials and tissue engineering.

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Area of Science:

  • Materials Science
  • Synthetic Biology
  • Biomimetics

Background:

  • Fabricating cytomimetic materials with adaptive functions is challenging.
  • Living bone's cell/matrix integration provides inspiration for synthetic materials.

Purpose of the Study:

  • To develop viscoelastic tissue-like micro-composites using inorganic protocells and organic networks.
  • To achieve site-specific, self-regulated calcification and structural remodeling in synthetic tissues.

Main Methods:

  • Covalently tethering alkaline phosphatase-containing inorganic protocells (colloidosomes) onto a crosslinked organic network.
  • Utilizing protocells for selective intra-protocellular, matrix-specific extra-protocellular, or gradient calcification.
  • Creating integrated prototissues with populations capable of calcification and decalcification for structural remodeling.

Main Results:

  • Successfully fabricated viscoelastic tissue-like micro-composites.
  • Achieved site-specific endogenous calcification (intra-protocellular, extra-protocellular, gradient).
  • Demonstrated chemically induced structural remodeling mimicking osteoblast/osteoclast interplay.

Conclusions:

  • The methodology enables chemically self-regulated calcification in tissue-like mineral-matrix composites.
  • Advances bottom-up synthetic biology in chemical materials research.
  • Offers potential applications in bioinspired tissue engineering, hydrogel technologies, and bone biomimetics.