Highly Branched Polymers Based on Poly(amino acid)s for Biomedical Application

Area of Science:

• Biomedical Engineering
• Polymer Chemistry
• Materials Science

Background:

• Poly(amino acid)s are biocompatible and biodegradable polymers derived from natural amino acids.
• Certain amino acids with an AB2 structure enable the formation of branched polymer architectures.
• Highly branched polymers include dendrimers, dendrigrafts, and hyperbranched polymers.

Purpose of the Study:

• To review and compare three types of highly branched polymers: dendrimers, dendrigrafts, and hyperbranched polymers.
• To examine their synthesis methods, modulations, and variations.
• To discuss their biomedical applications, focusing on gene and drug delivery systems and antiviral uses.

Main Methods:

• Comparative analysis of synthesis routes for dendrimers, dendrigrafts, and hyperbranched polymers.
• Review of literature on the application of these polymers in biomedical fields.
• Examination of their function as non-viral gene delivery vectors and drug delivery systems.

Main Results:

• Poly(L-lysine) and poly(L-glutamic acid) are key poly(amino acid)s studied for branched structures.
• Highly branched polymers show promise as non-viral gene delivery vectors.
• Their small size is advantageous for inhalable drug delivery.

Conclusions:

• Highly branched poly(amino acid)s are versatile for biomedical applications, particularly in drug and gene delivery.
• Despite extensive research, clinical translation remains limited, except for commercialized antiviral applications.
• Further development could enhance their utility in targeted therapies and advanced drug delivery systems.