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In Situ Stability Test for mRNA Vaccines Based on Deep-UV Resonance Raman Spectroscopy.

Lamyaa M Almehmadi1,2, Sergei V Reverdatto1,2, Vladimir V Ermolenkov2

  • 1Department of Chemistry, University at Albany, SUNY, 1400 Washington Avenue, Albany, New York 12222, United States.

Analytical Chemistry
|December 5, 2023
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Summary
This summary is machine-generated.

Deep-UV resonance Raman spectroscopy (DUVRR) can monitor mRNA vaccine stability. This technique successfully detected mRNA degradation caused by enzymes or aging in a vaccine model.

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Area of Science:

  • Biophysical Chemistry
  • Vaccine Technology
  • Spectroscopy

Background:

  • Messenger RNA (mRNA) vaccines represent a significant advancement in vaccinology.
  • Ensuring the in situ stability and integrity of mRNA vaccines is crucial for their efficacy and safety.
  • Current methods for assessing mRNA integrity can be time-consuming or require sample destruction.

Purpose of the Study:

  • To evaluate the potential of Deep-UV resonance Raman spectroscopy (DUVRR) for non-destructive, in situ monitoring of mRNA vaccine stability.
  • To demonstrate DUVRR's ability to detect mRNA degradation under various stress conditions.

Main Methods:

  • A model mRNA vaccine was subjected to controlled degradation using RNase A enzyme.
  • The vaccine model was also aged at room temperature to simulate storage conditions.
  • Messenger RNA degradation was independently verified using cell transfection assays and gel electrophoresis.
  • Deep-UV resonance Raman spectroscopy was employed to analyze the vaccine model under both degradation conditions.

Main Results:

  • DUVRR spectroscopy successfully identified characteristic spectral changes indicative of mRNA degradation.
  • The spectroscopic signals correlated with the extent of mRNA degradation observed through conventional methods.
  • The technique proved effective in detecting degradation induced by both enzymatic activity and thermal aging.

Conclusions:

  • Deep-UV resonance Raman spectroscopy is a promising tool for real-time, in situ assessment of mRNA vaccine integrity.
  • DUVRR offers a non-destructive method for quality control and stability monitoring of mRNA-based therapeutics.
  • This spectroscopic approach could enhance the güvenilirlik and shelf-life assessment of mRNA vaccines.