Recent Studies on Hydrogels Based on H₂O₂-Responsive Moieties: Mechanism, Preparation and Application.

Area of Science:

• Biomaterials Science
• Chemical Engineering
• Medical Chemistry

Background:

• Hydrogen peroxide (H₂O₂) is a crucial signaling molecule in cellular processes.
• Dysregulation of H₂O₂ is implicated in diseases like cancer, diabetes, and cardiovascular conditions.
• H₂O₂-responsive hydrogels (H₂O₂-Gels) are advanced biomaterials with potential for disease management.

Purpose of the Study:

• To review H₂O₂-responsive moieties used in H₂O₂-Gel fabrication.
• To categorize H₂O₂-Gel preparation methods based on reaction mechanisms.
• To highlight the diverse applications of H₂O₂-Gels in biomedical fields.

Main Methods:

• Literature review of H₂O₂-responsive moieties (thioethers, disulfides, selenides, etc.).
• Classification of H₂O₂-Gel synthesis into self-crosslinking and difunctional crosslinker-mediated approaches.
• Compilation of H₂O₂-Gel applications in drug delivery, diagnostics, and tissue engineering.

Main Results:

• Identified key H₂O₂-responsive chemical groups for hydrogel design.
• Differentiated hydrogel fabrication strategies based on crosslinking mechanisms.
• Cataloged applications including H₂O₂ detection, glucose-responsive systems, ROS scavenging, and cell encapsulation.

Conclusions:

• H₂O₂-Gels are adaptable biomaterials due to their responsive nature and tunable properties.
• Fabrication methods offer flexibility for tailored hydrogel design.
• H₂O₂-Gels show significant promise for advanced biomedical applications, including targeted therapies and diagnostics.