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Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers
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Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers

Published on: July 22, 2015

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Supported Lipid Bilayers (SLBs) to Study Amyloid-Lipid Membrane Interactions with Atomic Force Microscopy

Daniel G Cava1, Marisela Vélez2

  • 1Instituto de Catálisis y Petroleoquímica (CSIC), (Cantoblanco) Madrid, Spain.

Methods in Molecular Biology (Clifton, N.J.)
|August 11, 2022
PubMed

Insights

Supported lipid bilayers (SLBs) provide a model to study amyloid fiber interactions with cell membranes using atomic force microscopy (AFM). This method visualizes fiber absorption and membrane changes at the lipid-protein surface.

Area of Science:

  • Biophysics
  • Materials Science
  • Biochemistry

Background:

  • Supported lipid bilayers (SLBs) are crucial model systems for investigating membrane biophysics.
  • Amyloid fibers are implicated in various diseases, and understanding their membrane interactions is vital.
  • Atomic Force Microscopy (AFM) offers high-resolution imaging of biological surfaces.

Purpose of the Study:

  • To detail the preparation of SLBs on mica for studying amyloid fiber interactions.
  • To outline the use of AFM for analyzing fiber adsorption and membrane modifications.
  • To provide a method for visualizing the dynamic interplay between amyloid structures and lipid membranes.

Main Methods:

  • Preparation of supported lipid bilayers (SLBs) on mica substrates.
  • Adsorption of amyloid fibers onto the SLB surface.
  • Atomic Force Microscopy (AFM) for topographical analysis of the lipid-protein surface.

Main Results:

  • Successful preparation of SLBs suitable for fiber adsorption studies.
  • AFM imaging reveals the topography of lipid-protein surfaces with adsorbed fibers.
  • Visualization of membrane modifications induced by the presence of amyloid fibers.

Conclusions:

  • SLBs on mica serve as an effective platform for studying amyloid fiber-membrane interactions.
  • AFM is a powerful tool for characterizing fiber adsorption and membrane alterations.
  • This methodology facilitates research into the mechanisms of amyloid-related membrane damage.
Keywords:
Amyloid fibersAtomic force microscope (AFM)Supported lipid bilayers (SLBs)

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