Machine Learning-Assisted Real-Time Inflammation Monitoring and Optimal Treatment of Diabetic Wounds Based on a Ratiometric Fluorescent Sensing Peptide Hydrogel.

Managing inflammation in diabetic chronic wounds remains a major clinical challenge, primarily due to the lack of real-time monitoring techniques. To address this issue, we developed a peptide hydrogel capable of simultaneously monitoring the inflammation status and promoting healing. The hydrogel was formed by coassembling polyglutamic acid with polylysine that was premodified with coumarin 7 (an ACQ fluorophore) and tetraphenylethene (an AIE fluorophore).

A Polypeptosome Spray To Heal Antibiotic-Resistant Bacteria-Infected Wound by Photocatalysis-Induced Metabolism-Interference.

With the booming antimicrobial drug resistance worldwide, traditional antibacterial agents (e.g., antibiotics) are usually powerless against superbug.

Ultrasound-Responsive HBD Peptide Hydrogel with Antibiofilm Capability for Fast Diabetic Wound Healing.

Despite advancements in therapeutic agents for diabetic chronic wounds, challenges such as suboptimal bioavailability, intricate disease milieus, and inadequate delivery efficacy have impeded treatment outcomes. Here, ultrasound-responsive hydrogel incorporated with heparin-binding domain (HBD) peptide nanoparticles is developed to promote diabetic wound healing. HBD peptide, derived from von Willebrand Factor with angiogenic activity, are first engineered to self-assemble into nanoparticles with enhanced biostability and bioavailability.

An Antibacterial Polypeptide Coating Prepared by Enzymatic Polymerization for Preventing Delayed Infection of Implants.

Delayed implant-associated infection is an important challenge, as the treatment involves a high risk of implant replacement. Mussel-inspired antimicrobial coatings can be applied to coat a variety of implants in a facile way, but the adhesive 3,4-dihydroxyphenylalanine (DOPA) group is prone to oxidation. Therefore, an antibacterial polypeptide copolymer poly(Phe--Lys)--polyTyr was designed to prepare the implant coating upon tyrosinase-induced enzymatic polymerization for preventing implant-associated infections.