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Updated: Jun 4, 2026
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Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA
Published on: February 1, 2019
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Stability-preserving post-processing of mRNA-lipid nanoparticles utilizing a scalable ion concentration polarization
Seungbin Yoon1, Sanghun Lee2, Hyeongju Choe3
1Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77, Cheongam-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do, 37673, Republic of Korea.
Biosensors & Bioelectronics
|November 18, 2025
Summary
Ion concentration polarization (ICP) offers a gentle method to concentrate lipid nanoparticles (LNPs) for mRNA delivery. This technique preserves LNP properties and bioactivity, improving manufacturing for RNA therapeutics.
Area of Science:
- Biotechnology
- Nanotechnology
- Chemical Engineering
Background:
- Lipid nanoparticles (LNPs) are crucial for mRNA delivery but are fragile during post-processing, hindering clinical use.
- Current concentration methods like tangential flow filtration (TFF) can cause structural damage and dilution loss.
Purpose of the Study:
- To introduce and evaluate an ion concentration polarization (ICP)-based method for concentrating mRNA-LNPs.
- To demonstrate that ICP concentration preserves LNP physicochemical properties and bioactivity.
Main Methods:
- Utilized ion concentration polarization (ICP) for selective enrichment of mRNA-LNPs.
- Assessed particle size, polydispersity index (PDI), and encapsulation efficiency.
- Evaluated functional bioactivity through cell-based protein expression assays.
- Compared ICP method with traditional tangential flow filtration (TFF).
Main Results:
- ICP method achieved rapid and gentle concentration of mRNA-LNPs.
- Preserved key physicochemical properties: particle size (<80 nm), low PDI (<0.2), and high encapsulation efficiency (>94%).
- Maintained functional bioactivity, confirmed by successful protein expression.
- ICP showed reduced structural disruption and dilution loss compared to TFF.
Conclusions:
- ICP-based concentration is an effective strategy for preserving mRNA-LNP stability and functionality.
- This method offers advantages over TFF, minimizing damage and loss.
- ICP shows significant potential for integration into continuous manufacturing of advanced RNA therapeutics.
Keywords:
Ion concentration polarizationMicrofluidicsNanoparticle concentrationPhysicochemical stabilityScalable platformmRNA–LNPMore Related Videos
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