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Updated: Dec 24, 2025
Fabrication of Size-Controlled and Emulsion-Free Chitosan-Genipin Microgels for Tissue Engineering Applications
Published on: April 13, 2022
A new printable and durable N,O-carboxymethyl chitosan-Ca2+-polyphosphate complex with morphogenetic activity
Werner E G Müller1, Emad Tolba, Heinz C Schröder
1ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Duesbergweg 6, D-55128 Mainz, Germany. wmueller@uni-mainz.de wang013@uni-mainz.de.
Researchers developed a novel biomimetic material, N,O-carboxymethyl chitosan + polyphosphate (N,O-CMC + polyP), for tissue engineering. This printable, durable scaffold effectively promotes bone regeneration in vivo.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Biomimetic materials offer alternatives to autologous tissues in regenerative medicine.
- Chitosan derivatives are widely used in tissue engineering.
- Polyphosphate (polyP) is a natural polymer with osteogenic properties.
Purpose of the Study:
- To develop a functionalized, three-dimensional biomimetic scaffold for tissue engineering.
- To integrate polyphosphate (polyP) into N,O-carboxymethyl chitosan (N,O-CMC) for enhanced osteogenic activity.
- To evaluate the printability, durability, and regenerative potential of the hybrid N,O-CMC + polyP material.
Main Methods:
- Bioprinting of a functionalized N,O-CMC + polyP hybrid material.
- Crosslinking N,O-CMC and polyP using Ca2+ bridges.
- In vitro assessment of SaOS-2 bone-like cell biomineralization.
- In vivo evaluation in a rat calvarial defect model.
Main Results:
- The N,O-CMC + polyP material demonstrated successful printability and durability.
- The hybrid scaffold induced biomineralization in SaOS-2 bone-like cells.
- In vivo studies showed significant regeneration-inducing activity in a rat calvarial defect model.
Conclusions:
- The N,O-CMC + polyP hybrid material is a promising biomimetic scaffold for tissue engineering.
- This custom-designed material offers a potential alternative for bone regeneration solutions.
- The study highlights the synergistic benefits of combining N,O-CMC and polyP for regenerative applications.
