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Synthesis of Stimuli-responsive Nanogels using Aqueous One-step Crosslinking and Co-nanopolymerization
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Cobalt-Cross-Linked, Redox-Responsive Spy Network Protein Hydrogels.
Songzi Kou1, Xin Yang2, Zhongguang Yang3
1Biomedical Research Institute, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen 518036, China.
ACS Macro Letters
|May 27, 2022
Summary
This study enhances protein hydrogels using metal coordination to improve mechanics and enable controlled protein release. These advanced biomaterials support cell growth and modulate cell signaling for tissue engineering applications.
Area of Science:
- Biomaterials Science
- Protein Engineering
- Biochemistry
Background:
- SpyTag/SpyCatcher chemistry is used for bioactive hydrogel assembly.
- Existing Spy networks have weak mechanics due to inefficient cross-linking.
Purpose of the Study:
- To improve the mechanics of protein networks.
- To enable stimuli-responsive immobilization and release of recombinant proteins.
Main Methods:
- Utilized metal/ligand (cobalt/His6-tag) coordination interactions.
- Integrated stimuli-responsive metal coordination with SpyTag/SpyCatcher chemistry.
Main Results:
- Modulated bulk mechanics of protein networks.
- Achieved redox-dependent immobilization and release of recombinant proteins.
- Developed hydrogels supporting cell growth, proliferation, and specific cell signaling (e.g., via leukemia inhibitory factor).
Conclusions:
- Metal coordination significantly enhances protein network mechanics.
- This approach offers a new strategy for designing advanced bioactive protein materials.
- The developed hydrogels show promise for regenerative medicine and controlled drug delivery.
