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Updated: Dec 28, 2025

Constant Pressure-controlled Extrusion Method for the Preparation of Nano-sized Lipid Vesicles

Constant Pressure-controlled Extrusion Method for the Preparation of Nano-sized Lipid Vesicles

Published on: June 22, 2012

Microfluidic diffusional sizing probes lipid nanodiscs formation.

Mehdi Azouz¹, Mathilde Gonin¹, Sebastian Fiedler²

¹Univ Bordeaux, CNRS, CBMN UMR 5248, Bat B14 Allée Geoffroy St Hilaire, F-33600 Pessac, France.

Biochimica Et Biophysica Acta. Biomembranes

|February 17, 2020

Summary

This summary is machine-generated.

Microfluidic Diffusional Sizing (MDS) precisely measures copolymer nanodisc size and lipid ratios, offering a new method to study membrane protein interactions and the role of lipids.

Keywords:

Lipids Microfluidic diffusional sizing Peptide Polymer nanodiscs SMALP

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Formulating and Characterizing Lipid Nanoparticles for Gene Delivery using a Microfluidic Mixing Platform

Formulating and Characterizing Lipid Nanoparticles for Gene Delivery using a Microfluidic Mixing Platform

Published on: February 25, 2021

Area of Science:

Biophysics
Membrane Protein Research
Nanotechnology

Background:

Studying membrane proteins in their native lipid environment is challenging due to detergent solubilization altering properties.
Copolymer nanodiscs offer a detergent-free method to solubilize membrane proteins but have limitations in size control and stability.
Existing characterization techniques for nanodisc formation require multiple methods.

Purpose of the Study:

To evaluate Microfluidic Diffusional Sizing (MDS) as a novel method for monitoring copolymer nanodisc formation.
To develop and optimize a protocol for using MDS in nanodisc characterization.
To assess the utility of MDS in studying peptide-nanodisc interactions and the role of lipids.

Main Methods:

Microfluidic Diffusional Sizing (MDS) was adapted and optimized for nanodisc formation analysis.
MDS was used to determine nanodisc size and copolymer/lipid ratios.
MDS was applied to investigate peptide-nanodisc interactions.

Main Results:

MDS accurately measures nanodisc size and copolymer/lipid ratios during formation.
The study demonstrates MDS's capability to characterize peptide-nanodisc interactions.
MDS highlights the crucial role of lipids in mediating interactions, using an aggregating peptide as a case study.

Conclusions:

MDS is a promising technique for real-time monitoring and characterization of copolymer nanodisc formation.
MDS provides valuable insights into lipid-mediated interactions involving membrane protein models.
This work validates MDS as a powerful tool for biophysical investigations of membrane systems.