Temperature-Responsive Hydrogel Delivers Antimicrobial Peptide-Engineered Plant Vesicles for Wound Healing | Research

The takeaway

A temperature-responsive hydrogel delivering AMP-engineered watermelon-derived extracellular vesicles provided sequential infection control and wound healing.

Sequential treatment
Temperature-responsive hydrogel delivers infection control first, then wound healing promotion

What the researchers found

AMP-engineered watermelon vesicles in temperature-responsive hydrogel provided sequential infection control followed by wound healing promotion.

Why it matters

Combining plant-derived vesicles with AMPs in smart hydrogels creates a multifunctional wound treatment that addresses multiple healing challenges simultaneously.

How the study worked

Synthesis of AMP-conjugated watermelon-derived EVs; incorporation into temperature-responsive hydrogel; in vitro antimicrobial testing and wound healing assessment.

What this study cannot tell us

Preclinical study — clinical translation requires extensive safety and efficacy testing; watermelon EV production standardization needed.

How to read the evidence

Preclinical biomaterials study — demonstrates a novel concept but clinical utility unproven.

When this study was published

Published 2026 in Colloids and Surfaces B.

The bigger picture

Plant-derived vesicles as drug carriers represent a sustainable, scalable alternative to mammalian cell-derived vesicles, making advanced wound therapies more accessible.

Questions still open

Can watermelon EV-based wound dressings be manufactured at clinical scale?
How does the temperature-responsive release profile match real wound healing dynamics?

Common questions

What are watermelon-derived extracellular vesicles?

They are tiny natural packages released by watermelon cells that contain beneficial compounds like anti-inflammatory and healing molecules. Scientists engineered them with antimicrobial peptides to also fight infections.

How does a temperature-responsive hydrogel work?

It changes properties at body temperature — becoming a gel when applied to warm skin, which helps it stay in place over the wound and release its therapeutic cargo in a controlled, sequential manner.

Read the original research

Temperature-responsive hydrogel delivery of antimicrobial peptide engineered watermelon-derived extracellular vesicles enables sequential infection control and wound healing.

Colloids and surfaces. B, Biointerfaces, 261, 115438

View on PubMed ↗Publisher’s paper ↗

Citation

Bai, Ziyang; Zhao, Yifan; Gong, Yajuan; Du, Meijun; Zhang, Wenjun; Zhang, Ke; Zhi, Yongchao; Nie, Yanan; Li, Xia; Wu, Xiuping; Li, Bing. (2026). Temperature-responsive hydrogel delivery of antimicrobial peptide engineered watermelon-derived extracellular vesicles enables sequential infection control and wound healing.. Colloids and surfaces. B, Biointerfaces, 261, 115438. https://doi.org/10.1016/j.colsurfb.2026.115438