Polyesters and Polyester Nano- and Microcarriers for Drug Delivery.

Area of Science:

• Polymer Chemistry
• Nanotechnology
• Materials Science

Background:

• Therapeutic delivery often requires carriers to shield drugs from the immune system and healthy tissues.
• Various nanocarriers exist, including inorganic nanoparticles, liposomes, and polymer-based systems.
• Aliphatic polyesters are a key polymer class for developing tailored nanocarriers.

Purpose of the Study:

• To review the controlled synthesis of aliphatic polyesters for nanocarrier preparation.
• To discuss methods for loading drugs into these nanocarriers.
• To present findings on polyester nanocarriers for targeted drug delivery and clinical applications.

Main Methods:

• Controlled synthesis of aliphatic polyesters like poly(β-butyrolactone)s, polylactides, polyglycolide, and poly(ε-caprolactone).
• Preparation of functionalized nanoparticles using copolymers with double bonds.
• Application of various drug-loading techniques, including nanoprecipitation and direct synthesis methods.
• In vitro and in vivo studies for brain-targeted drug delivery.

Main Results:

• Synthesis of aliphatic polymers with controlled molar masses and microstructures.
• Development of drug-loaded nanocarriers using diverse preparation methods.
• Demonstration of in vitro and in vivo efficacy for brain-targeted therapies.
• Update on clinical studies and approved polyester nanocarrier formulations.

Conclusions:

• Aliphatic polyesters provide a tunable platform for advanced drug delivery systems.
• Controlled synthesis and formulation methods enable the creation of effective nanocarriers.
• Polyester nanocarriers show promise in clinical settings for cancer treatment.