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Ligand Nano-cluster Arrays in a Supported Lipid Bilayer
Published on: April 23, 2017
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Tuning cell adhesion on supported lipid bilayers via nanoscale geometry
Long Li1, Jie Gao2, Yingfeng Shao1
1State Key Laboratory of Nonlinear Mechanics and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China. shaoyf@lnm.imech.ac.cn.
Soft Matter
|November 8, 2021
Summary
The nanoscale geometry of supported lipid bilayers (SLBs) significantly impacts cell adhesion receptor binding. Modifying SLB surface geometry offers a new way to control cell-membrane interactions for applications in regenerative medicine.
Area of Science:
- Biophysics
- Materials Science
- Cell Biology
Background:
- Cell-supported lipid bilayer (SLB) systems model membrane receptor-ligand interactions.
- SLBs are deposited on solid supports or polymer cushions.
- The influence of SLB geometry on receptor-ligand binding remains an open question.
Purpose of the Study:
- To investigate how the nanoscale geometry of SLBs affects cell adhesion receptor binding.
- To explore the relationship between SLB topography and membrane-receptor interactions.
Main Methods:
- Utilized a mesoscopic mechanical model.
- Employed Monte Carlo simulations.
- Studied fluid membrane adhesion to corrugated and egg-carton shaped SLBs.
Main Results:
- Nanoscale SLB geometry strongly influences receptor-ligand binding.
- Adhering membranes bend to conform to SLB geometry, facilitating ligand binding.
- Membrane bending couples with receptor-ligand complex distribution and membrane undulations.
Conclusions:
- Cell adhesion to SLBs is controllable by tuning SLB nanoscale geometry.
- Findings have implications for tissue engineering and regenerative medicine.
- Understanding geometry-driven adhesion can advance biomaterial design.
