Cell Engineering with Functional Poly(oxanorbornene) Block Copolymers

Area of Science:

• Biomaterials Science
• Cell Biology
• Polymer Chemistry

Background:

• Cell-based therapies are increasingly important for disease treatment.
• Synthetic polymers offer a way to add functions to cells beyond genetic modification.

Purpose of the Study:

• To develop functional block copolymers for cell membrane insertion.
• To impart controllable functionality, such as light-induced cell death, onto cell surfaces.

Main Methods:

• Synthesized functional block copolymers using ring-opening metathesis polymerization (ROMP).
• Incorporated long alkyl chains for hydrophobic interaction and insertion into the lipid bilayer.
• Integrated a photosensitizer for light-activated functionality.

Main Results:

• Achieved direct insertion of polymers into the cell membrane via hydrophobic interactions.
• Demonstrated spatially controlled cell death using red-light irradiation and localized singlet oxygen generation.
• Showcased the ability to imbue polymers with advanced functionalities.

Conclusions:

• Developed a novel strategy for functionalizing cell surfaces using synthetic polymers.
• This polymer insertion method provides a versatile platform for cell-based therapies.
• The approach enables precise control over cellular functions, like targeted cell death.