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Mechanisms of Membrane-bending

Mechanisms of Membrane-bending

The living membranes are flexible due to their fluid mosaic nature; however, their bending into different shapes is an active process regulated by specific lipids and proteins. The membrane bending can be transient as seen in vesicles or stable for a long time as in microvilli. Cells regulate the size, location, and duration of the membrane curvature.
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...

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Reconstitution of Septin Assembly at Membranes to Study Biophysical Properties and Functions

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Exploring the Design Rules for Efficient Membrane-Reshaping Nanostructures.

Joel C Forster^1,2,3, Johannes Krausser^1,2,3, Manish R Vuyyuru^1,2

¹Department of Physics and Astronomy, University College London, WC1E 6BS London, United Kingdom.

Physical Review Letters

|December 14, 2020

Summary

This summary is machine-generated.

Researchers discovered that arranging ligands into 1D chains on nanoparticles enhances cell membrane reshaping and uptake. This finding offers new design rules for nanoparticle construction and drug development.

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Last Updated: Nov 26, 2025

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Area of Science:

Biophysics
Materials Science
Computational Biology

Background:

Cell membrane interactions with nanoparticles are crucial for drug delivery and nanotechnology.
Understanding how nanoparticle surface patterns influence cell uptake is essential for designing effective nanomedicines.

Purpose of the Study:

To investigate how the surface patterning of nanostructures affects cell membrane reshaping and cell uptake.
To identify optimal ligand arrangements on nanoparticles for efficient and reliable cell entry.

Main Methods:

Utilized an evolutionary algorithm coupled with coarse-grained molecular dynamics simulations.
Explored a wide range of ligand patterns on nanoparticle surfaces.

Main Results:

Identified that one-dimensional chains of ligands are highly effective for cell uptake, especially with low ligand numbers.
Demonstrated that these chain patterns increase nanoparticle rotational freedom.
Showed that the ligand chain structures significantly lower the free energy barrier for membrane crossing.

Conclusions:

The study reveals nonintuitive design principles for nanoparticle surface engineering.
Findings can guide the development of novel nanoparticles for targeted delivery and therapeutic applications.
The identified patterns may inform the design of inhibitors for viral entry into cells.