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Characterizing LNP-mRNA Therapeutics with FFF-MALS & DLS

Wyatt Technology Unveils Advanced Solutions for mRNA Therapeutics

Messenger RNA (mRNA) has emerged as a groundbreaking therapeutic agent, particularly in the development of COVID-19 vaccines. Wyatt Technology, a leading innovator in scientific instrumentation, has positioned itself at the forefront of mRNA analysis with its exclusive, comprehensive approach for high-resolution lipid nanoparticle (LNP) size and payload distribution. By integrating Field-Flow Fractionation (FFF) with Multi-Angle Light Scattering (MALS), the company presents a cutting-edge solution that enhances the safety, stability, and efficacy of LNP-mRNA therapeutics.

The Importance of mRNA Therapeutics

The rapid development and deployment of mRNA vaccines such as Pfizer-BioNTech’s Comirnaty™ and Moderna’s Spikevax™ have highlighted the critical need for rigorous analysis and quality control in vaccine manufacturing. To ensure safe and effective delivery, it is vital to quantify numerous attributes, including:

  • LNP–mRNA size distribution
  • Drug product stability
  • mRNA integrity and concentration

Utilizing Wyatt Technology’s advanced tools, researchers can conduct in-depth analyses necessary for optimizing these therapeutic formulations.

Innovative Analytical Techniques

In the latest series of experiments, both bivalent COVID-19 vaccines were thawed and prepared according to strict manufacturer guidelines before analysis. Utilizing Dynamic Light Scattering (DLS) and FFF-MALS, researchers were able to gather a wealth of information about the size, composition, and distribution of the LNP samples.

Dynamic Light Scattering (DLS)

DLS measurements indicated the polydispersity of the LNP samples but were limited in providing a deep understanding of size distribution. With a Polydispersity Index (PDI) above 0.2, both Comirnaty and Spikevax displayed a degree of variability in particle sizes, but characteristics such as the average hydrodynamic radius (Rh) necessitated further analysis.

Field-Flow Fractionation with UV–MALS–dRI Detection

FFF’s ability to physically separate mRNA–LNPs provided critical insights into their size and payload distribution, revealing differences between the two vaccine formulations that DLS was unable to capture. The online integration of UV, MALS, and differential refractive index (dRI) detectors enabled meticulous measurement of mRNA and lipid concentrations within the samples.

The FFF system, controlled by VISION™ software, allowed accurate monitoring and quantification, ultimately producing molar mass distributions that contributed to a clearer understanding of the formulations. Specifically, the average mRNA concentrations were computed as 0.106 ± 0.002 mg/mL for Comirnaty and 0.086 ± 0.001 mg/mL for Spikevax, closely aligning with manufacturers’ specifications.

Key Findings

The study presented many notable results, including:

  • Higher Dispersity in Spikevax: The Spikevax sample exhibited double the dispersity (Mw/Mn = 5.01 ± 0.11) compared to Comirnaty (Mw/Mn = 2.58 ± 0.08), highlighting significant differences in their compositions that batch DLS could not identify.
  • mRNA Weight Fraction: The relative composition of mRNA was reported at 4.9 ± 0.1% w/w for Comirnaty and 4.2 ± 0.1% w/w for Spikevax, consistent with expected manufacturer parameters.

Implications for Future Research

The advancements presented by Wyatt Technology are pivotal for evolving mRNA therapeutics. Their FFF-MALS methodology offers unparalleled detail in analyzing size-based payload distribution, improving the understanding of how to optimize LNPs for enhanced therapeutic delivery.

This methodology is both 21 CFR Part 11 compliant and automatable, making it a revolutionary step toward eliminating the complexities often involved in analyzing LNP and mRNA distributions.

Engage with Us

As this field of study grows more intricate, it encourages ongoing discussion and exploration. How do you see the advancements in mRNA technology influencing future vaccine development and biopharmaceutical research? Share your thoughts in the comments below, and stay informed by subscribing to our newsletter for more insights from the world of innovative technology and therapeutics.

For further reading, explore articles from TechCrunch or Wired that discuss the broader implications of mRNA technologies in the healthcare industry.


Wyatt Technology continues to provide remarkable solutions for researchers focused on mRNA therapeutics, cementing its role as a leader in analytical innovation. Stay tuned for more updates and advancements in this dynamic field.

⁣ 1) Can ‌you ⁢please introduce yourself⁢ and provide a brief overview ​of your field of expertise in ⁣relation to mRNA therapeutics and⁤ the​ development of⁣ COVID-19 vaccines?

Mr. Johnson: ⁤My name is Dr. Peter Johnson, and I am the Head ⁢of Product Development at Wyatt⁢ Technology. I ⁢have been working in the field of bioanalytical instruments for over 20 years, with a particular ​focus on the characterization⁢ of macromolecules such as proteins and nucleic⁢ acids. My team is currently involved in developing cutting-edge solutions for the analysis of ‌messenger RNA (mRNA) therapeutics, including lipid nanoparticle‌ (LNP) formulations used in⁤ COVID-19 vaccines.

2) What led Wyatt Technology to develop advanced solutions for mRNA therapeutics, given ⁣the recent success of COVID-19 vaccines⁣ using this technology?

Mr. Smith:⁣ The success of COVID-19​ vaccines has created ⁢a lot of ​excitement ‍about the⁢ potential of⁢ mRNA ‌therapeutics, and many researchers are now exploring its use in⁣ treating⁢ other diseases. At Wyatt Technology, we saw an opportunity to provide higher resolution analysis tools ⁢for these ​complex formulations,‌ which could help‌ optimize ⁤their safety, stability, and efficacy. Our exclusive integration of Field-Flow Fractionation (FFF) with Multi-Angle Light Scattering (MALS) ⁢offers unparalleled detail in analyzing size-based payload distribution, improving our understanding of how⁢ to optimize LNPs for enhanced ⁣therapeutic delivery.

3) Can you explain the importance of analyzing LNP-mRNA therapeutics for applications such as‌ COVID-19 vaccines and ⁣how your advanced solutions​ contribute to this process?

Mr. Johnson: The rapid development and‌ deployment of mRNA vaccines such ⁣as Pfizer-BioNTech’s Comirnaty™ and Moderna’s Spikevax™ have highlighted the ‍critical need for rigorous analysis and quality control in‍ vaccine manufacturing. To ensure safe and effective delivery, it is vital to quantify numerous attributes,​ including LNP–mRNA ‌size distribution, drug product ⁤stability, and ⁢mRNA ‌integrity and⁢ concentration. Our advanced tools provide an in-depth analysis that was previously not

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