Microneedles in Smart Drug Delivery

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Pharmacology

Background:

• Traditional transdermal drug delivery methods face limitations due to the skin's stratum corneum, reducing therapeutic efficacy.
• Advancements in micro- and nanotechnology have introduced microneedles (MNs) as a promising alternative for drug delivery.
• MNs offer improved safety, patient compliance, and targeted action compared to conventional methods.

Purpose of the Study:

• To review the state-of-the-art in microneedle technology for drug delivery.
• To discuss the mechanisms, types, and applications of microneedles.
• To provide an overview of clinical translation and future directions for microneedle-based therapeutics.

Main Methods:

• Review of current literature on microneedle technology.
• Categorization and discussion of different microneedle types (solid, hollow, coated, dissolving, hydrogel-forming).
• Analysis of microneedle drug delivery mechanisms and clinical applications.

Main Results:

• Microneedles represent a sophisticated approach to transdermal drug delivery, enhancing efficacy and patient compliance.
• Various MN designs cater to different drug types and delivery requirements.
• Significant progress has been made in the clinical translation and application of MNs.

Conclusions:

• Microneedles show great potential for revolutionizing transdermal drug delivery.
• Future research should focus on enhancing MN efficacy, strength, and minimizing potential immune responses for successful clinical translation.