Bio-Inspired Suction Cup Microneedle Loaded Fusion Membrane Targeting Nano-Drug Delivery System to Treat Androgenetic Alopecia
April 2026
in “
Journal of Nanobiotechnology
”
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Studysummary In this study, researchers developed a leech-inspired microneedle platform for targeted delivery of metformin to hair follicle cells, which showed promising results in reducing inflammation and oxidative stress and promoting hair growth, offering a potential new treatment strategy for androgenetic alopecia. Our plain-language summary of this paper — not a Tressless recommendation.
The study presents a novel bio-inspired suction-cup microneedle platform, SC/MN@memPDA, designed to treat androgenetic alopecia (AGA) by delivering metformin directly to the dermal papilla. This system uses 300-µm microneedles with suction-assisted negative pressure for deeper insertion, mesoporous polydopamine nanoparticles for controlled drug release, and a fusion membrane from M2 macrophages and dermal papilla cells for targeted delivery. The platform effectively reduces inflammation and oxidative stress, enhances hair growth, and offers a minimally painful, follicle-targeted therapeutic strategy for AGA.
