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Bi X, Liu D, Wang L, Rao L, Fu ML, Sun W, Yuan B. Deposition kinetics of bacteriophage MS2 on Microcystis aeruginosa and kaolin surface. Colloids Surf B Biointerfaces 2022; 220:112875. [PMID: 36179609 DOI: 10.1016/j.colsurfb.2022.112875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/11/2022] [Accepted: 09/21/2022] [Indexed: 11/25/2022]
Abstract
Waterborne virus contamination might easily adsorb on the organic or inorganic surface in the complex aquatic environment. A quartz crystal microbalance coupled with dissipation monitoring was used to investigate the effects of the ionic strength of monovalent cation and divalent cation and pH on the deposition kinetics of bacteriophage MS2 on silica surface coated with Microcystis aeruginosa or kaolin, which represents organic or inorganic particle, respectively. Derjaguin-Landau-Verwey-Overbeek theory was used to illustrate the deposition mechanisms of MS2. The increased concentration of Na+ significantly enhanced the deposition rates of MS2 on both coated silica surfaces due to the reduction of repulsive electrostatic interactions. However, the MS2 deposition rates decreased at higher ionic strength of Ca2+, which accounted for the steric and hydrophobic interactions. And the higher MS2 deposition rates on both surfaces occurred at pH 3. In addition, the deposition rates of MS2 on kaolin-coated silica surfaces were higher than on the Microcystis-coated surface under all studied conditions. Furthermore, the Derjaguin-Landau-Verwey-Overbeek theory could elucidate the deposition mechanism in Na+ solution, whereas the steric and hydrophobic interactions should be considered for the presence of high concentration of Ca2+.
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Affiliation(s)
- Xiaochao Bi
- Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution Control, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Decai Liu
- Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution Control, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Lu Wang
- Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution Control, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - La Rao
- Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution Control, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Ming-Lai Fu
- Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution Control, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China.
| | - Wenjie Sun
- Department of Atmospheric and Hydrologic Science, St. Cloud State University, 720 4th Avenue South, St. Cloud, MN 56301, USA
| | - Baoling Yuan
- Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution Control, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China; Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, PR China.
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Canepa E, Salassi S, Simonelli F, Ferrando R, Rolandi R, Lambruschini C, Canepa F, Dante S, Relini A, Rossi G. Non-disruptive uptake of anionic and cationic gold nanoparticles in neutral zwitterionic membranes. Sci Rep 2021; 11:1256. [PMID: 33441958 PMCID: PMC7807088 DOI: 10.1038/s41598-020-80953-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 12/18/2020] [Indexed: 11/16/2022] Open
Abstract
The potential toxicity of ligand-protected nanoparticles (NPs) on biological targets is crucial for their clinical translation. A number of studies are aimed at investigating the molecular mechanisms shaping the interactions between synthetic NPs and neutral plasma membranes. The role played by the NP surface charge is still widely debated. We compare, via liposome leakage assays, the perturbation induced by the penetration of sub-6 nm anionic and cationic Au NPs into model neutral lipid membranes composed of the zwitterionic 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC). Our charged Au NPs are functionalized by a mixture of the apolar 1-octanethiol and a ω-charged thiol which is either the anionic 11-mercapto-1-undecanesulfonate or the cationic (11-mercaptoundecyl)-N,N,N-trimethylammonium. In both cases, the NP uptake in the bilayer is confirmed by quartz crystal microbalance investigations. Our leakage assays show that both negatively and positively charged Au NPs do not induce significant membrane damage on POPC liposomes when penetrating into the bilayer. By means of molecular dynamics simulations, we show that the energy barrier for membrane penetration is the same for both NPs. These results suggest that the sign of the NP surface charge, per se, does not imply different physicochemical mechanisms of interaction with zwitterionic lipid membranes.
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Affiliation(s)
- Ester Canepa
- Department of Chemistry and Industrial Chemistry, University of Genoa, 16146, Genoa, Italy
| | | | | | | | - Ranieri Rolandi
- Department of Physics, University of Genoa, 16146, Genoa, Italy
| | - Chiara Lambruschini
- Department of Chemistry and Industrial Chemistry, University of Genoa, 16146, Genoa, Italy
| | - Fabio Canepa
- Department of Chemistry and Industrial Chemistry, University of Genoa, 16146, Genoa, Italy
| | - Silvia Dante
- Materials Characterization Facility, Italian Institute of Technology, 16163, Genoa, Italy
| | - Annalisa Relini
- Department of Physics, University of Genoa, 16146, Genoa, Italy.
| | - Giulia Rossi
- Department of Physics, University of Genoa, 16146, Genoa, Italy.
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Foreman-Ortiz IU, Liang D, Laudadio ED, Calderin JD, Wu M, Keshri P, Zhang X, Schwartz MP, Hamers RJ, Rotello VM, Murphy CJ, Cui Q, Pedersen JA. Anionic nanoparticle-induced perturbation to phospholipid membranes affects ion channel function. Proc Natl Acad Sci U S A 2020; 117:27854-27861. [PMID: 33106430 PMCID: PMC7668003 DOI: 10.1073/pnas.2004736117] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Understanding the mechanisms of nanoparticle interaction with cell membranes is essential for designing materials for applications such as bioimaging and drug delivery, as well as for assessing engineered nanomaterial safety. Much attention has focused on nanoparticles that bind strongly to biological membranes or induce membrane damage, leading to adverse impacts on cells. More subtle effects on membrane function mediated via changes in biophysical properties of the phospholipid bilayer have received little study. Here, we combine electrophysiology measurements, infrared spectroscopy, and molecular dynamics simulations to obtain insight into a mode of nanoparticle-mediated modulation of membrane protein function that was previously only hinted at in prior work. Electrophysiology measurements on gramicidin A (gA) ion channels embedded in planar suspended lipid bilayers demonstrate that anionic gold nanoparticles (AuNPs) reduce channel activity and extend channel lifetimes without disrupting membrane integrity, in a manner consistent with changes in membrane mechanical properties. Vibrational spectroscopy indicates that AuNP interaction with the bilayer does not perturb the conformation of membrane-embedded gA. Molecular dynamics simulations reinforce the experimental findings, showing that anionic AuNPs do not directly interact with embedded gA channels but perturb the local properties of lipid bilayers. Our results are most consistent with a mechanism in which anionic AuNPs disrupt ion channel function in an indirect manner by altering the mechanical properties of the surrounding bilayer. Alteration of membrane mechanical properties represents a potentially important mechanism by which nanoparticles induce biological effects, as the function of many embedded membrane proteins depends on phospholipid bilayer biophysical properties.
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Affiliation(s)
| | - Dongyue Liang
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706
- Department of Chemistry, Boston University, Boston, MA 02215
| | | | - Jorge D Calderin
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706
| | - Meng Wu
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Puspam Keshri
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003
| | - Xianzhi Zhang
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003
| | - Michael P Schwartz
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706
| | - Robert J Hamers
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003
| | - Catherine J Murphy
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Qiang Cui
- Department of Chemistry, Boston University, Boston, MA 02215
- Department of Physics, Boston University, Boston, MA 02215
- Department of Biomedical Engineering, Boston University, Boston, MA 02215
| | - Joel A Pedersen
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706;
- Department of Soil Science, University of Wisconsin-Madison, Madison, WI 53706
- Department of Civil & Environmental Engineering, University of Wisconsin-Madison, Madison, WI 53706
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Xia PP, Shan Y, He LL, Ji YY, Wang XH, Li SB. Multinanoparticle translocations in phospholipid membranes: Translocation modes and dynamic processes. CHINESE J CHEM PHYS 2020. [DOI: 10.1063/1674-0068/cjcp1910174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Ping-ping Xia
- Department of Physics, Wenzhou University, Wenzhou 325035, China
| | - Yue Shan
- Department of Physics, Wenzhou University, Wenzhou 325035, China
| | - Lin-li He
- Department of Physics, Wenzhou University, Wenzhou 325035, China
| | - Yong-yun Ji
- Department of Physics, Wenzhou University, Wenzhou 325035, China
| | - Xiang-hong Wang
- Department of Physics, Wenzhou University, Wenzhou 325035, China
| | - Shi-ben Li
- Department of Physics, Wenzhou University, Wenzhou 325035, China
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