Double network bacterial cellulose hydrogel to build a biology-device interface

Area of Science:

• Biomaterials Science
• Bioelectronics
• Regenerative Medicine

Background:

• Developing effective biology-device interfaces is crucial for integrating microelectronics and biotechnology.
• Bacterial cellulose (BC) hydrogels offer biocompatibility and desirable transport properties.
• Conducting polymers (CPs) provide electroactive characteristics.

Purpose of the Study:

• To create novel electroactive hydrogels by combining BC and CP for a functional biology-device interface.
• To investigate the electroactive and biocompatible properties of these composite hydrogels.
• To explore their potential in personalized and regenerative medicine.

Main Methods:

• Fabrication of double-network hydrogels using bacterial cellulose (BC) and conducting polymers (CP).
• Characterization of electroactive properties using cyclic voltammetry and electrochemical impedance spectroscopy (EIS).
• Assessment of cell viability and proliferation using human normal skin fibroblasts.

Main Results:

• Successfully synthesized BC-CP composite hydrogels with a double-network structure.
• Demonstrated electroconductivity and voltage/current response in BC-PAni and BC-PPy composites.
• Confirmed BC hydrogels support human fibroblast growth without cytotoxicity, indicating excellent biocompatibility.

Conclusions:

• The developed biphasic Janus hydrogels integrate electroactivity with biocompatibility.
• These BC-CP composite hydrogels show promise as a biology-device interface.
• Potential applications include implantable devices for personalized and regenerative medicine.