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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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Development of Focused Ultrasound-Assisted Nanoplexes for RNA Delivery
Sanjeev Ranjan1,2, Stef Bosch1, Hannamari Lukkari1,3
1Institute of Biomedicine, University of Eastern Finland, 70210 Kuopio, Finland.
Nanomaterials (Basel, Switzerland)
|July 13, 2024
Summary
Adaptive focused ultrasound (AFU) offers a novel, non-invasive method for loading RNA therapeutics into nanoliposomes, creating stable nanoplexes. This technique enhances RNA protection and achieves high gene silencing efficacy, overcoming limitations of current drug delivery systems.
Area of Science:
- Biotechnology
- Nanotechnology
- Drug Delivery
Background:
- RNA therapeutics, including small interfering RNA (siRNA), show promise for treating chronic and rare diseases.
- Current lipid-based delivery systems for RNA therapeutics face challenges in clinical application due to formulation and preparation complexities.
- Optimization of nanoliposome design and preparation is crucial for effective RNA drug delivery.
Purpose of the Study:
- To introduce adaptive focused ultrasound (AFU) as a novel, non-invasive drug loading technique for RNA therapeutics.
- To encapsulate small RNA molecules within nanoliposomes, forming stable nanoplexes with enhanced RNA protection.
- To evaluate the efficiency and characteristics of AFU-prepared nanoplexes for potential therapeutic applications.
Main Methods:
- Adaptive focused ultrasound (AFU) was employed for non-invasive, isothermal encapsulation of small interfering RNA (siRNA) into nanoliposomes.
- The process was conducted under sterile conditions, requiring minimal sample volume (300 μL) and short treatment time (10 min).
- Quantitative polymerase chain reaction (qPCR), cryo-electron microscopy (cryo-EM), and atomic force microscopy (AFM) were used to assess gene silencing efficacy and nanoplex characteristics.
Main Results:
- AFU successfully produced nanoplexes with encapsulated siRNA, protecting RNA from degradation.
- In vitro experiments demonstrated high gene silencing efficacy (>80%) using silencer CD44 siRNA in mammalian cell lines.
- Cryo-EM and AFM revealed well-defined nanoparticles (100-200 nm) formed by AFU, unlike the clustered complexes in untreated samples.
Conclusions:
- Adaptive focused ultrasound (AFU) is a promising, rapid, sterile, and solvent-free method for processing and loading liposomes.
- AFU-based nanoplexes offer a potential advancement in RNA therapeutic delivery, enhancing stability and efficacy.
- This technique addresses current limitations in RNA drug delivery, paving the way for improved therapeutic strategies.
Keywords:
encapsulation efficiencyfocused ultrasoundlipid nanoparticlesnanoplexesphospholipid bilayer fragmentssiRNA deliveryMore Related Videos
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