Selenium-containing polymers: promising biomaterials for controlled release and enzyme mimics

Area of Science:

• Polymer Chemistry
• Biomaterials Science
• Nanotechnology

Background:

• Responsive polymeric materials show promise for drug delivery and diagnostics, but therapeutic outcomes often fall short of expectations.
• Developing materials sensitive to low physiological concentrations (micromolar/nanomolar) remains a significant challenge.
• Selenium's unique electrochemical properties and bond energies (C-Se, Se-Se) offer dynamic characteristics for novel biomaterial design.

Purpose of the Study:

• To review recent research on selenium-containing polymers as advanced biomaterials.
• To highlight their potential applications in mild-responsive drug delivery and as artificial enzymes.
• To explore novel synthesis strategies and applications of these unique polymers.

Main Methods:

• Synthesis of selenium-containing main chain block copolymers.
• Investigation of dual redox and gamma-irradiation responsiveness in diselenide-containing block copolymers.
• Coordination of platinum with monoselenide-containing block copolymers for multidrug systems.
• Preparation of selenium-containing polymers with side chains via covalent and noncovalent methods.
• Design of selenium-containing dendritic polymers for enzyme mimicry.

Main Results:

• Selenium-containing polymers demonstrate responsiveness to mild stimuli, enabling controlled disassembly under physiological conditions.
• Diselenide-containing block copolymers exhibit dual redox and gamma-irradiation behavior, suitable for combined chemotherapy and actinotherapy.
• Platinum coordination with monoselenide polymers facilitates the creation of multidrug systems for cooperative chemotherapy.
• Tunable amphiphilicity achieved in side-chain selenium-containing polymers.
• Development of highly efficient selenium-containing dendritic polymers capable of mimicking enzyme functions.

Conclusions:

• Selenium-containing polymers represent a promising new class of biomaterials with unique mild-responsive properties.
• These polymers have significant potential for advanced drug delivery systems and the development of artificial enzymes.
• The field is nascent, offering vast opportunities for future innovation in responsive materials and biomedical applications.