Poly(2-oxazoline)s based biomaterials: A comprehensive and critical update.

Area of Science:

• Polymer Chemistry
• Biomaterials Science
• Drug Delivery

Background:

• Poly(2-oxazoline)s (POx) show potential as biomaterials, comparable to poly(ethylene glycol) (PEG).
• POx were historically overlooked despite early promise, but have seen renewed interest in the last decade.
• The established use of PEG as a gold standard in hydrophilic synthetic biomaterials overshadowed POx development.

Purpose of the Study:

• To provide a comprehensive review of poly(2-oxazoline) based biomaterials, focusing on advancements in the last five years.
• To highlight the chemical diversity and synthetic accessibility of POx for tailored biomaterial properties.
• To showcase the expanding applications and growing research interest in POx for various biomaterial needs.

Main Methods:

• Review of recent scientific literature (last 5 years) on poly(2-oxazoline)s in biomaterials.
• Analysis of synthetic strategies and chemical modifications of POx.
• Evaluation of structure-property relationships for diverse POx architectures.

Main Results:

• Significant increase in research and development of POx biomaterials over the past decade.
• Demonstrated ability to fine-tune POx properties like molar mass, hydrophilicity-lipophilicity balance, and architecture.
• Successful application in novel areas, including promising first-in-human studies for a POx drug conjugate.

Conclusions:

• Poly(2-oxazoline)s offer a chemically rich and versatile platform for developing advanced biomaterials.
• The diverse properties and straightforward synthesis of POx facilitate access to materials for a wide range of applications.
• Continued growth in POx research is anticipated, driven by their potential in areas like targeted drug delivery and regenerative medicine.