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Related Experiment Video

Updated: Jan 20, 2026

Preparation of Chitosan-based Injectable Hydrogels and Its Application in 3D Cell Culture
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Injectable and fast self-healing protein hydrogels.

Xin Zhang1, Shangtong Jiang1, Tengfei Yan2

  • 1Institute of Biomass Functional Materials Interdisciplinary Studies, Jilin Engineering Normal University, No. 3050, Kaixuan Road, Changchun, 130052, P. R. China.

Soft Matter
|August 30, 2019
PubMed
Summary

This study introduces a novel, injectable protein hydrogel with rapid self-healing capabilities. This biocompatible material repairs itself within minutes, offering solutions for drug delivery and tissue engineering applications.

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Regenerative Medicine

Background:

  • Injectable hydrogels are crucial for in situ formation but face challenges with cargo loss and premature coagulation.
  • Self-healing hydrogels offer a potential solution to overcome the limitations of traditional injectable hydrogels.

Purpose of the Study:

  • To develop an injectable, self-healing protein hydrogel with rapid repair capabilities.
  • To evaluate the biocompatibility and potential applications of the novel protein hydrogel.

Main Methods:

  • Formation of a protein hydrogel via disulfide bond reduction and re-matching of Bovine Serum Albumin (BSA) protein molecules.
  • Stimulation of self-healing properties using hydrogen peroxide (H2O2).
  • Assessment of injectability, repair efficiency, and cytotoxicity.

Main Results:

  • The developed protein hydrogel exhibits efficient and rapid self-healing within 1-2 minutes upon H2O2 stimulation, achieving 100% repair efficiency.
  • The hydrogel is injectable through a pinhole syringe and demonstrates excellent biocompatibility in cytotoxicity tests.
  • The material forms a stable network structure essential for its properties.

Conclusions:

  • This non-toxic, injectable, and fast self-healing protein hydrogel presents a promising material for biomedical applications.
  • Potential applications include tissue engineering, drug delivery systems, and 3D bioprinting.
  • The rapid self-healing mechanism addresses critical limitations in current injectable hydrogel technologies.