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Analytical Characterization and Stability Assessment of RNA-Based Vaccines
Hadi M Alasmari1, Shouq F Alghannam1, Hassan A Al-Moammar1
1Wellness and Preventive Medicine Institute, Health Sector, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia.
Pharmaceutics
|July 28, 2026
Summary
Developing stable ribonucleic acid (RNA) vaccines requires robust analytical methods to ensure quality. This review details essential analytical strategies for characterizing RNA vaccine formulations, addressing stability and performance challenges.
Area of Science:
- Biotechnology
- Pharmaceutical Sciences
- Vaccinology
Background:
- Ribonucleic acid (RNA)-based vaccines represent a significant advancement in vaccine technology, offering rapid development capabilities for infectious diseases.
- However, RNA molecule instability, degradation susceptibility, and complex formulation present significant development hurdles.
- Comprehensive analytical characterization is crucial for ensuring RNA vaccine quality, stability, and performance throughout their lifecycle.
Purpose of the Study:
- To provide a comprehensive overview of current analytical strategies for evaluating RNA vaccine formulations.
- To discuss the influence of formulation, manufacturing, and storage on vaccine stability and performance.
- To highlight analytical challenges, degradation pathways, and regulatory considerations for RNA vaccines.
Main Methods:
- Review of current analytical techniques for assessing RNA vaccine integrity, purity, and potency.
- Examination of methods for characterizing particle morphology, size, and surface properties.
- Analysis of factors influencing RNA vaccine stability, including formulation and storage conditions.
Main Results:
- Key analytical approaches for evaluating molecular integrity, purity, encapsulation efficiency, particle characteristics, and biological potency are discussed.
- The impact of formulation composition, lipid nanoparticle design, manufacturing, and storage on vaccine stability and performance is examined.
- Major degradation pathways, critical quality attributes, and analytical challenges are highlighted, alongside regulatory considerations.
Conclusions:
- Integrated multi-method analytical approaches are essential for comprehensive characterization and quality assurance of RNA vaccines.
- Continued advancements in analytical technologies and standardization are critical for developing safe, effective, and stable RNA vaccines.
- Addressing analytical challenges in establishing structure-activity relationships is vital for broader pharmaceutical applications of RNA technology.
