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Fabrication of Dissolvable Microneedle Patches Loaded with α-Lactalbumin Nanomicelles for Transdermal Capsaicin Delivery and Adipose Tissue Reduction

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Transdermal delivery enhanced by antimicrobial peptides.

Yeu-Chun Kim¹, Peter J Ludovice, Mark R Prausnitz

¹School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0100, USA.

Journal of Biomedical Nanotechnology

|February 19, 2011

Summary

Magainin antimicrobial peptides can increase skin permeability. This study found that while many peptides disrupt skin lipids, only specific magainin structures effectively enhance skin permeation, indicating structure is key.

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Area of Science:

Dermatology
Biochemistry
Pharmacology

Background:

Magainin antimicrobial peptides are known to increase skin permeability by disrupting stratum corneum lipids.
The relationship between antimicrobial peptide structure and skin permeation enhancement is not fully understood.

Purpose of the Study:

To investigate how antimicrobial peptide structure influences skin permeability enhancement.
To evaluate modified magainin derivatives and various antimicrobial peptides for their ability to enhance skin permeation.

Main Methods:

Assessed skin permeability enhancement using modified magainin derivatives and 20 distinct antimicrobial peptides.
Employed a formulation containing ethanol and N-lauroyl sarcosine (NLS).
Analyzed the structural characteristics (e.g., alpha-helical structure) and effects on stratum corneum lipids.

Main Results:

Magainin structure modification did not improve skin permeability enhancement.
All six magainin-based peptides fluidized stratum corneum lipids, but only magainin and a Gly-Ala substituted magainin significantly increased skin permeability.
Among 20 other antimicrobial peptides, only magainin and a Lys-Leu analog peptide demonstrated enhancement.

Conclusions:

Most antimicrobial peptides do not enhance skin permeability under the studied conditions.
Magainin peptide exhibits an optimal structure for enhancing skin permeability.
Antimicrobial peptide structure is a critical determinant of skin permeation enhancement.