Related Experiment Video
Updated: Dec 22, 2025
09:41
Formulating and Characterizing Lipid Nanoparticles for Gene Delivery using a Microfluidic Mixing Platform
Published on: February 25, 2021
24.7K
Deconvoluting Lipid Nanoparticle Structure for Messenger RNA Delivery
Yulia Eygeris1, Siddharth Patel1, Antony Jozic1
1Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Portland, Oregon 97201, United States.
Nano Letters
|May 7, 2020
Summary
Cholesterol modifications in lipid nanoparticles (LNPs) impact their structure and gene delivery efficiency. Understanding LNP morphology is key to developing better mRNA vaccines and therapies.
Area of Science:
- Biochemistry
- Materials Science
- Nanotechnology
Background:
- Lipid nanoparticles (LNPs) are crucial for mRNA vaccine delivery, but their precise structure is not fully understood.
- Cholesterol is a key LNP component influencing morphology and gene delivery.
- Investigating cholesterol derivatives can elucidate LNP structural properties.
Purpose of the Study:
- To examine the structural characteristics of lipid nanoparticles (LNPs) formulated with cholesterol derivatives.
- To correlate LNP structure with gene transfection efficiency.
Main Methods:
- Electron microscopy
- Differential scanning calorimetry
- Membrane fluidity assays
Main Results:
- Cholesterol derivatives with C24 alkyl chains induced polymorphic shapes and phase separation.
- Methyl/ethyl groups on the C24 tail increased multilamellarity (>50%).
- A double bond in the C24 tail increased lipid partitioning (>90%).
- Multilamellar, faceted LNPs with a lamellar lipid phase demonstrated higher gene transfection.
Conclusions:
- Structural variations in cholesterol derivatives significantly alter LNP morphology.
- Specific structural features like multilamellarity and lipid partitioning correlate with enhanced gene delivery.
- This research provides insights for the rational design of advanced mRNA-LNPs for improved gene therapy applications.
