Plant Nanovesicles Integrate Bioactivity and Transdermal Finasteride Delivery for Androgenetic Alopecia

Area of Science:

• Dermatology
• Nanotechnology
• Pharmacology

Background:

• Androgenetic alopecia (AGA) is a common hair loss condition with limited treatment options.
• Oral finasteride (FIN) is effective but causes systemic side effects.
• Traditional herbs show potential for hair growth but lack efficient delivery systems.

Purpose of the Study:

• To develop a transdermal drug delivery system for finasteride using plant-derived nanovesicles.
• To evaluate the efficacy and safety of this novel platform for AGA treatment.
• To explore the underlying mechanisms of action for hair regeneration.

Main Methods:

• Biomimetic nanovesicles derived from Platycladi cacumen (PcNs) were engineered as carriers for finasteride.
• In vitro skin permeation and retention studies were conducted.
• A testosterone-induced AGA mouse model was used to assess therapeutic efficacy.
• Mechanistic studies involved analyzing oxidative stress, inflammation, and gene expression.

Main Results:

• PcNs significantly improved transdermal permeation and local retention of finasteride.
• Topical application of FIN-loaded PcNs (FIN-PcNs) reversed hair follicle miniaturization in a mouse model.
• FIN-PcNs demonstrated superior hair regrowth compared to minoxidil and reduced oxidative stress.
• PcNs modulated inflammatory pathways and upregulated hair regeneration genes.

Conclusions:

• Plant-derived nanovesicles offer a safe and effective platform for transdermal finasteride delivery in AGA treatment.
• This approach integrates local drug delivery with the intrinsic bioactivity of plant compounds.
• The study highlights the potential of plant-derived nanocarriers for precision dermatology applications.