Enhancing vaccine stability in transdermal microneedle platforms.

Area of Science:

• Biomaterials Science
• Immunology
• Pharmaceutical Technology

Background:

• Microneedles (MNs) provide a minimally invasive route for intradermal delivery of vaccines and therapeutics.
• Manufacturing processes for MN patches can compromise the stability and efficacy of sensitive biological payloads.
• Ensuring the thermostability of vaccine antigens within MNs is critical for successful product development.

Purpose of the Study:

• To comprehensively review strategies for preserving the thermostability of vaccine payloads for MN applications.
• To examine the challenges and opportunities in translating thermostable vaccine MNs for clinical use.
• To highlight advances in scalable manufacturing of stabilized MN patches.

Main Methods:

• Review of physical and chemical stabilization techniques for antigens in vaccine formulations.
• Analysis of challenges in clinical translation, including cost-effectiveness and regulatory pathways.
• Emphasis on recent advancements in flexible and scalable MN patch manufacturing.

Main Results:

• Various physical and chemical methods can stabilize antigens for incorporation into MNs.
• Successful stabilization is key to overcoming manufacturing-induced degradation of vaccine payloads.
• Advances in manufacturing enable scalable production of stabilized MN patches.

Conclusions:

• Stabilizing vaccines and therapeutics for MNs enhances their effectiveness, safety, and user compliance.
• Thermostable MNs have the potential to significantly impact global public health by improving vaccine and drug delivery.
• Addressing manufacturing challenges and regulatory considerations is crucial for clinical adoption.