In Situ: Microbial Aerodynamic Microneedles for Targeted Drug Delivery Systems

Area of Science:

• Biotechnology
• Materials Science
• Precision Medicine

Background:

• Traditional microneedles require external stimuli for drug delivery.
• Limitations exist in achieving deep tissue penetration and controlled release.
• Need for energy-independent and targeted drug delivery systems.

Purpose of the Study:

• To develop autonomous microbial aerodynamic microneedles (MM-MNs) for transdermal drug delivery.
• To utilize microbial metabolism for energy-independent and precise drug propulsion.
• To leverage bioactive gases for enhanced therapeutic effects and localized treatment.

Main Methods:

• Development of microneedles utilizing microbial metabolism to generate propulsive gases (H2, NO, H2S).
• Integration of probiotic strains (e.g., Lactobacillus) for biocompatibility.
• Design of a scalable, cost-effective patch for localized therapies.

Main Results:

• MM-MNs demonstrated gas-driven propulsion for deep tissue drug delivery, overcoming penetration limits.
• Achieved energy-independent, spatiotemporally precise drug delivery with enhanced targeting and bioavailability.
• Bioactive gases (NO, H2S) modulated disease microenvironments, showing anti-inflammatory and vasodilatory effects.

Conclusions:

• MM-MNs represent a novel paradigm shift in transdermal drug delivery.
• The system offers biocompatibility, scalability, and potential for localized therapies (skin diseases, tumors).
• This innovation bridges microbial biotechnology and precision medicine for advanced therapeutic applications.