Coupling lipid nanoparticle structure and automated single particle composition analysis to design phospholipase responsive nanocarriers

DOI: 10.1002/adma.202200839

Authors: Hanna M. G. Barriga (Karolinska Institute) , Isaac J. Pence (Imperial College London) , Margaret N. Holme (Karolinska Institutet; Imperial College London) , James J. Doutch (ISIS Neutron and Muon Source) , Jelle Penders (Imperial College London) , Valeria Nele (Imperial College London) , Michael R. Thomas (Imperial College London) , Marta Carroni (Stockholm University) , Molly M. Stevens (Karolinska Institute; Imperial College London)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Advanced Materials

State: Published (Approved)
Published: March 2022
Diamond Proposal Number(s): 23642 , 18658

Abstract: Lipid nanoparticles (LNPs) are versatile structures with tunable physicochemical properties that are ideally suited as a platform for vaccine delivery and RNA therapeutics. A key barrier to LNP rational design is the inability to relate composition and structure to intracellular processing and function. Here we combine Single Particle Automated Raman Trapping Analysis (SPARTA®) with small angle scattering (SAXS / SANS) techniques to link LNP composition with internal structure and morphology and to monitor dynamic LNP - phospholipase D (PLD) interactions. Our analysis demonstrates that phospholipase D, a key intracellular trafficking mediator, can access the entire LNP lipid membrane to generate stable, anionic LNPs. PLD activity on vesicles with matched amounts of enzyme substrate was an order of magnitude lower, indicating that the LNP lipid membrane structure can be used to control enzyme interactions. This represents an opportunity to design enzyme-responsive LNP solutions for stimuli-responsive delivery and diseases where PLD is dysregulated.

Journal Keywords: Nanoparticles; SAXS; SANS; Raman spectroscopy; phospholipase D

Subject Areas: Medicine, Materials, Chemistry


Instruments: I22-Small angle scattering & Diffraction

Other Facilities: Sans2d at ISIS

Added On: 04/04/2022 08:53

Documents:
Advanced Materials - 2022 - Barriga - Coupling Lipid Nanoparticle Structure and Automated Single Particle Composition.pdf

Discipline Tags:

Vaccines Drug Delivery Physical Chemistry Health & Wellbeing Chemistry Materials Science Nanoscience/Nanotechnology Life Sciences & Biotech

Technical Tags:

Scattering Small Angle X-ray Scattering (SAXS)