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Updated: Mar 11, 2026
Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
Published on: February 7, 2021
Self-healing polysaccharide-based hydrogels as injectable carriers for neural stem cells
Zhao Wei1, Jingyi Zhao2, Yong Mei Chen1
1State Key Laboratory for Strength and Vibration of Mechanical Structures, International Center for Applied Mechanics and School of Aerospace, Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
Researchers developed a self-healing hydrogel carrier for neural stem cells (NSCs). This injectable material supports NSC delivery and differentiation, offering a promising approach for neurological disease treatment.
Area of Science:
- Biomaterials Science
- Neuroscience
- Regenerative Medicine
Background:
- Injectable hydrogels offer advantages for treating neurological diseases by protecting transplanted cells.
- Developing biocompatible, self-healing hydrogels that promote neural stem cell (NSC) differentiation remains a significant challenge.
Purpose of the Study:
- To develop a novel, biocompatible, self-healing, injectable hydrogel system for NSC delivery.
- To evaluate the hydrogel's potential to support NSC proliferation and neuronal differentiation.
Main Methods:
- Formulation of a polysaccharide-based hydrogel (CEC-l-OSA) using N-carboxyethyl chitosan (CEC) and oxidized sodium alginate (OSA).
- Utilized dynamic imine cross-links via Schiff reaction for self-healing properties under physiological conditions.
- Tuned hydrogel stiffness to mimic brain tissue (100–1000 Pa) to support cell functions.
Main Results:
- The CEC-l-OSA hydrogel demonstrated excellent self-healing capabilities after injection.
- The hydrogel's tunable stiffness effectively supported both the proliferation and neuronal differentiation of NSCs.
- The injectable and self-healing nature of the hydrogel minimizes cell loss and protects against injection-induced shear forces.
Conclusions:
- The developed CEC-l-OSA hydrogel is a promising injectable carrier for NSC transplantation.
- This self-healing hydrogel system holds potential for advancing the treatment of neurological diseases.
