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Updated: May 4, 2026

Detergent-free Ultrafast Reconstitution of Membrane Proteins into Lipid Bilayers Using Fusogenic Complementary-charged Proteoliposomes.
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Plasma membrane functionalization using highly fusogenic immune activator liposomes.

Elena Naumovska1, Simon Ludwanowski1, Nils Hersch1

  • 1Institute of Complex Systems, ICS-7: Biomechanics, Forschungszentrum Jülich GmbH, 52425, Germany.

Acta Biomaterialia
|December 18, 2013
PubMed
Summary

Researchers developed a novel carrier system to incorporate lipopolysaccharide (LPS) into mammalian cell membranes. This functionalization successfully activated immune cells, enabling targeted elimination of LPS-exhibiting cells for biomedical applications.

Keywords:
Fusogenic liposomes (FLs)Immune activationLipopolysaccharide (LPS)Plasma membrane functionalization

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Immunology

Background:

  • Cell surface functionalization is challenging without damaging cell membranes.
  • Incorporating molecules like lipopolysaccharide (LPS) can make mammalian cells detectable by the immune system.

Purpose of the Study:

  • To develop a carrier system for incorporating LPS into mammalian cell membranes.
  • To investigate the immune response triggered by LPS-functionalized cells.

Main Methods:

  • Developed fusogenic liposomes (FLs) to carry LPS.
  • Incorporated LPS-loaded FLs into mammalian plasma membranes.
  • Probed LPS presence and immune activation using macrophages.

Main Results:

  • Successfully incorporated LPS into mammalian cell membranes via FLs.
  • LPS-functionalized fibroblasts activated macrophages.
  • Macrophages eliminated cells displaying high concentrations of LPS.

Conclusions:

  • The developed method enables effective cell membrane functionalization with LPS.
  • This approach shows promise for biomedical applications, including targeted cell elimination.
  • Facilitates immune system recognition and response to modified cells.