What question did this study set out to answer?

The aim is to synthesize polydepsipeptide-based microparticles and evaluate their degradation profiles.

January 25, 2026

Synthesis and Processing of Polydepsipeptide- and Polylactic Acid-Based Microparticles with Tunable Degradation Profiles

Key Points

The aim is to synthesize polydepsipeptide-based microparticles and evaluate their degradation profiles.
Used organocatalyzed ring-opening polymerization for synthesis of polydepsipeptides.
Conducted copolymerization of polydepsipeptides with lactide.
Employed microfluidics to produce microparticles with specific sizes.
Evaluated degradation behavior in PBS and enzymatic environments.
Synthesis yielded PDP(Phe) microparticles with molar masses between 2.5 and 10 kg·mol^-1.
Microparticles exhibited size ranges of 40-60 μm with narrow distributions.
Degradation was composition- and environment-dependent, releasing amino acids and degradation products.

Abstract

Polydepsipeptides (PDPs) are biocompatible polymers, whose biodegradation releases only amino acids and glycolic or lactic acids, nontoxic compounds that are naturally present in the body. These polymers therefore have great potential as materials for use in biomedical applications, particularly as drug delivery systems. Here, we investigated the organocatalyzed ring-opening polymerization (OROP) of 3-benzylmorpholine-2,5-dione (MD(Phe)) using DBU and TU as the catalytic couple to synthesize PDP(Phe) with molar masses from 2.5 to 10 kg·mol-1. Copolymerization with lactide was also studied, with the aim of obtaining various degradation kinetics related to the enzymatic environment. PDP(Phe)- and P(MD-co-LA)-based microparticles were produced by microfluidics with diameters of 40-60 μm and narrow size distributions. Their degradation behavior was evaluated in PBS and in the presence of enzymes (esterase, α-chymotrypsin). Both PDP(Phe) and P(MD-co-LA) microparticles displayed composition- and environment-dependent degradation, releasing phenylalanine and hydrolyzed MD(Phe).

AI से पूछें

Bookmark

View Full Paper