Charged particles interacting with a mixed supported lipid bilayer as a biomimetic pulmonary surfactant

  • B. Munteanu
  • F. Harb
  • J. P. Rieu
  • Y. Berthier
  • B. Tinland
  • A. -M. Trunfio-Sfarghiu
Regular Article


This study shows the interactions of charged particles with mixed supported lipid bilayers (SLB) as biomimetic pulmonary surfactants. We tested two types of charged particles: positively charged and negatively charged particles. Two parameters were measured: adsorption density of particles on the SLB and the diffusion coefficient of lipids by FRAPP techniques as a measure of interaction strength between particles and lipids. We found that positively charged particles do not adsorb on the bilayer, probably due to the electrostatic repulsion between positively charged parts of the lipid head and the positive groups on the particle surface, therefore no variation in diffusion coefficient of lipid molecules was observed. On the contrary, the negatively charged particles, driven by electrostatic interactions are adsorbed onto the supported bilayer. The adsorption of negatively charged particles increases with the zeta-potential of the particle. Consecutively, the diffusion coefficient of lipids is reduced probably due to binding onto the lipid heads which slows down their Brownian motion. The results are directly relevant for understanding the interactions of particulate matter with pulmonary structures which could lead to pulmonary surfactant inhibition or deficiency causing severe respiratory distress or pathologies.

Graphical abstract


Living systems: Biomimetic Systems 


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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • B. Munteanu
    • 1
  • F. Harb
    • 2
    • 4
  • J. P. Rieu
    • 3
  • Y. Berthier
    • 1
  • B. Tinland
    • 2
  • A. -M. Trunfio-Sfarghiu
    • 1
  1. 1.CNRS, INSA de Lyon, LaMCoS, UMR5259Université de LyonLyonFrance
  2. 2.CNRS, CINaM, UMR7325Université Aix-MarseilleMarseilleFrance
  3. 3.CNRS, UCBL, ILM, UMR5586Université de LyonLyonFrance
  4. 4.Department of Biology; Faculty of Sciences - Section IILebanese UniversityBeirutLebanon

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