Hydration force between phosphatidylcholine surfaces in aqueous electrolyte solutions

Afzal, Saima; Tesler, W.J; Blessing, S.K; Collins, John M.; Lis, L.J.

doi:10.1016/0021-9797(84)90300-x

Cited by 41 publications

(24 citation statements)

References 18 publications

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“…On the whole, the increasing deposition masses and rates as shown in Figure 6A,B may be due to the decrease in hydration force and electrostatic repulsion with increasing NaCl concentrations. This phenomenon was also suggested by Afzal et al 47 and Yi and Chen. 48 Conversely, the deposition masses and rates initially showed an increased trend with increasing CaCl 2 concentrations and reached the maximum at 0.5 mM CaCl 2 .…”

Section: ■ Results and Discussionsupporting

confidence: 78%

Real-Time QCM-D Monitoring of Deposition of Gold Nanorods on a Supported Lipid Bilayer as a Model Cell Membrane

et al. 2019

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Gold nanorods (GNRs) exhibit promising potentials in therapeutics and diagnostics. A quartz crystal microbalance with dissipation (QCM-D) monitoring was used to study the influence of size and solution chemistry on the deposition of GNRs on a model cell membrane. Supported lipid bilayers (SLBs) comprising zwitterionic 1,2-dioleoyl-snglycero-3-phosphocholine were used as the model cell membrane. QCM-D results showed that the deposition mass of GNRs on SLBs increased with increasing GNR concentration from 1 to 50 μM. The GNRs with smaller size exhibited a higher deposition mass in comparison with the larger one when they had a similar zeta potential. Additionally, pH also influenced the deposition behavior of GNRs on SLBs because of the change in their electrostatic interaction. Under neutral pH conditions, the deposition masses of GNRs on SLBs increased with increasing concentrations of NaCl, which is probably attributed to the reduced electrostatic repulsive force. However, the deposition mass of GNRs decreased over a range of CaCl 2 concentration from 0.5 to 10 mM. In this case, the GNR aggregation and electrostatic repulsion between GNRs and SLBs may occur due to the charge reversal of SLBs. The deposition kinetic showed that the final deposition mass was positively correlated with the initial deposition rate. Furthermore, a possible mechanism was proposed. This study provides a good understanding of the deposition of GNRs with cell membranes.

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Section: ■ Results and Discussionsupporting

confidence: 78%

Real-Time QCM-D Monitoring of Deposition of Gold Nanorods on a Supported Lipid Bilayer as a Model Cell Membrane

et al. 2019

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“…13,14 In the recent studies, the membrane-membrane interactions of lipids or surfactants have been discussed while solely considering four following interactions: 15 2 van der Waals interactions, short-range repulsion due to protrusion of molecules or strongly bound water molecule, 16,17 long-range steric repulsion due to membrane fluctuation 18,19 and electrostatic interaction. The electrostatic interaction is negligible between neutrally charged membranes.…”

Section: Introductionmentioning

confidence: 99%

Salt Effects on Lamellar Repeat Distance Depending on Head Groups of Neutrally Charged Lipids

2014

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Change in lamellar repeat distances of neutrally charged lipids upon addition of monovalent salts was measured with small-angle X-ray scattering for combinations of two lipids (PC and PE lipids) and six salts. Large dependence on lipid head group is observed in addition to those on added cation and anion. The ion and lipid dependences have little correlation with measured surface potentials of lipid membranes. These results indicate that the lamellar swelling by salt is not explained through balance among interactions considered previously (van der Waals interaction, electrostatic repulsion emerged by ion binding, etc.). It is suggested that effect of water structure, which is affected by not only ions but also lipid itself, should be taken into account for understanding membrane-membrane interactions, as in the Hofmeister effect.

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“…Cells brought into contact before (2)(3)(4)(5) or after (6, 7) the application of electric pulses lead to the formation of viable polykaryons. The molecular mechanisms which are involved are still unknown (8 -10).…”

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confidence: 99%

Cell Hybridization by Electrofusion on Filters

Ramos

Bonenfant

Teissié

2002

Analytical Biochemistry

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Hydration force between phosphatidylcholine surfaces in aqueous electrolyte solutions

Cited by 41 publications

References 18 publications

Real-Time QCM-D Monitoring of Deposition of Gold Nanorods on a Supported Lipid Bilayer as a Model Cell Membrane

Real-Time QCM-D Monitoring of Deposition of Gold Nanorods on a Supported Lipid Bilayer as a Model Cell Membrane

Salt Effects on Lamellar Repeat Distance Depending on Head Groups of Neutrally Charged Lipids

Cell Hybridization by Electrofusion on Filters

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