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Updated: May 23, 2025

Formulating and Characterizing Lipid Nanoparticles for Gene Delivery using a Microfluidic Mixing Platform
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mRNA lipid nanoparticle formulation, characterization and evaluation.

Yutian Ma1, Rachel VanKeulen-Miller2, Owen S Fenton3

  • 1Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Nature Protocols
|March 12, 2025
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Summary
This summary is machine-generated.

This guide simplifies messenger RNA (mRNA) lipid nanoparticle (LNP) formulation, characterization, and evaluation. It provides a unified workflow to help researchers enter the mRNA LNP field more easily.

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Area of Science:

  • Biotechnology
  • Nanomedicine
  • Molecular Biology

Background:

  • Messenger RNA (mRNA) therapies offer significant therapeutic potential.
  • Complex formulation and evaluation workflows create barriers for researchers entering the mRNA lipid nanoparticle (LNP) field.

Purpose of the Study:

  • To provide a simplified, step-by-step guide for mRNA LNP formulation, characterization, and in vitro/in vivo evaluation.
  • To lower barriers for scientists in academia, industry, and clinical settings to engage with mRNA LNP research.
  • To integrate formulation, characterization, and evaluation into a singular, accessible workflow.

Main Methods:

  • Detailed protocol for formulating mRNA LNPs.
  • Characterization of key parameters: size, PDI, zeta potential, mRNA concentration, encapsulation efficiency, and stability.
  • In vitro evaluations: protein expression, cell uptake, and endosomal escape.
  • In vivo evaluations: protein expression, biodistribution, and tolerability studies.

Main Results:

  • A comprehensive protocol for mRNA LNP production and evaluation is presented.
  • The guide covers formulation, characterization, and both in vitro and in vivo assessments.
  • The workflow is designed to be applicable across various mRNA LNP formulations.

Conclusions:

  • This integrated protocol facilitates entry into mRNA LNP research by simplifying complex procedures.
  • Dissemination of this workflow aims to foster innovation and collaboration in mRNA LNP development.
  • The ultimate goal is to accelerate the translational advancement of mRNA-based therapeutics.