Recent Development of Conductive Hydrogels for Tissue Engineering: Review and Perspective

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Tissue Engineering

Background:

• Traditional tissue engineering scaffolds lack conductivity, hindering electrical coupling with electroactive tissues.
• Electroactive tissues require electrical signaling for proper function and repair.

Purpose of the Study:

• To review the classifications and fabrication methods of electroconductive hydrogels (ECHs).
• To highlight the applications of ECHs in cardiac, nerve, skin, and skeletal muscle tissue engineering.
• To provide guidelines for designing ECHs for clinical applications.

Main Methods:

• Literature review of electroconductive hydrogels in tissue engineering.
• Analysis of ECHs' properties, including electroconductivity, biocompatibility, and water content.
• Examination of in vitro and in vivo studies demonstrating ECHs' effects on cells and tissues.

Main Results:

• ECHs promote intercellular electrical signal communication in vitro.
• ECHs enhance cell adhesion, proliferation, migration, and differentiation.
• ECHs facilitate electrical signal transmission in vivo, activating bioelectrical pathways for tissue repair.

Conclusions:

• ECHs are versatile biomaterials for tissue engineering, particularly for electroactive tissues.
• Implanting ECHs can restore physiological electrical conduction and promote tissue regeneration.
• Further research and design considerations are needed for successful clinical translation of ECHs.