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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

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Related Experiment Video

Updated: Jun 29, 2026

Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers
10:15

Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers

Published on: July 22, 2015

Atomic force microscopy of supported lipid bilayers.

Marie-Paule Mingeot-Leclercq1, Magali Deleu, Robert Brasseur

  • 1Unité de Pharmacologie Cellulaire et Moléculaire, Université Catholique de Louvain, Brussels, Belgium.

Nature Protocols
|October 4, 2008
PubMed
Summary

This study details a 10-hour protocol for creating supported lipid bilayers (SLBs) and observing their interaction with azithromycin using atomic force microscopy (AFM). This method aids in understanding membrane properties and drug interactions at the nanoscale.

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Area of Science:

  • Biophysics
  • Nanobiotechnology
  • Materials Science

Background:

  • Supported lipid bilayers (SLBs) are crucial for studying biological membranes and have applications in nanobiotechnology.
  • Atomic force microscopy (AFM) is a key technique for high-resolution imaging of SLBs.
  • AFM can track dynamic processes like drug-membrane interactions.

Purpose of the Study:

  • To establish a rapid protocol for preparing supported lipid bilayers (SLBs).
  • To image the nanoscale interaction of SLBs with the antibiotic azithromycin using AFM.
  • To provide a comprehensive method for SLB preparation and analysis.

Main Methods:

  • Preparation of dioleoylphosphatidylcholine/dipalmitoylphosphatidylcholine (DOPC/DPPC) bilayers on mica using small unilamellar vesicles.
  • Imaging of SLBs and their interaction with azithromycin via Atomic Force Microscopy (AFM).
  • Optimization of the entire protocol for a 10-hour completion time.

Main Results:

  • Successful preparation of DOPC/DPPC supported lipid bilayers (SLBs).
  • Nanoscale visualization of azithromycin interaction with the prepared SLBs using AFM.
  • Demonstration of a complete, efficient protocol for SLB preparation and drug interaction studies.

Conclusions:

  • The presented protocol offers an efficient method for preparing and analyzing supported lipid bilayers (SLBs).
  • AFM is effective for visualizing nanoscale drug-membrane interactions, exemplified by azithromycin.
  • This 10-hour protocol facilitates rapid investigation of membrane biophysics and nanobiotechnology applications.