1
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Zabala-Ferrera O, Beltramo PJ. Effects of Ion Concentration and Headgroup Chemistry on Thin Lipid Film Drainage. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16294-16302. [PMID: 37939040 DOI: 10.1021/acs.langmuir.3c01795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
While the use of lipid nanoparticles in drug delivery applications has grown over the past few decades, much work remains to be done toward the characterization and rational design of the drug carriers. A key feature of delivery is the interaction of the exterior leaflet of the LNP with the outer leaflet of the cell membrane, which relies in part on the fusogenicity of the lipids and the ionic environment. In this paper, we study the interactions between two lipid monolayers using a thin film balance to create lipid thin films and interferometry to measure film evolution. We probe the role of lipid headgroup chemistry and charge, along with ionic solution conditions, in either promoting or hindering film drainage and stability. Specific headgroups phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylglycerol (PG), and phosphatidylserine (PS) are chosen to represent a combination of charge and fusogenicity. We quantify each film's drainage characteristics over a range of capillary numbers. Qualitatively, we find that films transition from drainage via a large dimple to drainage via channels and vortices as the capillary number increases. Additionally, we observe a transition from electrostatically dominated film drainage at low CaCl2 concentrations to fusogenic-dominated film drainage at higher CaCl2 concentrations for anionic fusogenic (PS) films. Understanding the role of headgroup composition, ionic composition, and ionic concentration will pave the way for the design of tunable vesicle and buffer systems that behave desirably across a range of ex vivo and in vivo environments.
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Affiliation(s)
- Oscar Zabala-Ferrera
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Peter J Beltramo
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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2
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Ma Y, Dong P, He Y, Zhao Z, Zhang X, Yang J, Yan J, Li W. Freezing of water and melting of ice: theoretical modeling at the nanoscale. NANOSCALE 2023; 15:18004-18014. [PMID: 37909355 DOI: 10.1039/d3nr02421k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Freezing of water and melting of ice at the nanoscale play critical roles in science and technology fields, including aviation systems, infrastructures, and other broad spectrum of technologies. To cope with the icing challenge, nanoscale anti-icing surface technology has been developed. The freezing and melting temperatures can be tailored by manipulating the size (the radius of water or ice); however, it lacks systemic research. In this work, the size effect on the melting temperature of ice nanocrystals was first established, which considered the variation of bond energy and equivalent heat energy from the perspective of the force-heat equivalence energy density principle. Based on the heterogeneous nucleation mode and by further considering the size and temperature effects on the interface energy involved solid-liquid energy and liquid-vapor energy as well as the above developed melting temperature model, another model is established to accurately predict the freezing temperature of water nanodroplets. The parameters required by the two models established in this paper have a clear physical meaning and establish the quantitative relationships among freezing temperature, melting temperature, surface stress, interface energy, and other thermodynamic parameters. The agreement between model prediction and experimental simulation data confirms the validity and universality of the established models. The higher prediction accuracy of this work compared to the other theoretical models, due to the more detailed consideration and the reference point, captures the errors introduced by the experiment or simulation. This study contributes to a deeper understanding of the underlying mechanism of freezing of water and melting of ice nanocrystals and provides theoretical guidance for the design of cryopreservation systems and anti-icing systems for aviation.
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Affiliation(s)
- Yanli Ma
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.
- College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China
| | - Pan Dong
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.
| | - Yi He
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.
| | - Ziyuan Zhao
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.
| | - Xuyao Zhang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.
| | - Jiabin Yang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.
| | - Jiabo Yan
- High School Affiliated to Southwest University, Chongqing, 400799, China
| | - Weiguo Li
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.
- College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China
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3
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Paracini N, Gutfreund P, Welbourn R, Gonzalez-Martinez JF, Zhu K, Miao Y, Yepuri N, Darwish TA, Garvey C, Waldie S, Larsson J, Wolff M, Cárdenas M. Structural Characterization of Nanoparticle-Supported Lipid Bilayer Arrays by Grazing Incidence X-ray and Neutron Scattering. ACS APPLIED MATERIALS & INTERFACES 2023; 15:3772-3780. [PMID: 36625710 PMCID: PMC9880997 DOI: 10.1021/acsami.2c18956] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Arrays of nanoparticle-supported lipid bilayers (nanoSLB) are lipid-coated nanopatterned interfaces that provide a platform to study curved model biological membranes using surface-sensitive techniques. We combined scattering techniques with direct imaging, to gain access to sub-nanometer scale structural information on stable nanoparticle monolayers assembled on silicon crystals in a noncovalent manner using a Langmuir-Schaefer deposition. The structure of supported lipid bilayers formed on the nanoparticle arrays via vesicle fusion was investigated using a combination of grazing incidence X-ray and neutron scattering techniques complemented by fluorescence microscopy imaging. Ordered nanoparticle assemblies were shown to be suitable and stable substrates for the formation of curved and fluid lipid bilayers that retained lateral mobility, as shown by fluorescence recovery after photobleaching and quartz crystal microbalance measurements. Neutron reflectometry revealed the formation of high-coverage lipid bilayers around the spherical particles together with a flat lipid bilayer on the substrate below the nanoparticles. The presence of coexisting flat and curved supported lipid bilayers on the same substrate, combined with the sub-nanometer accuracy and isotopic sensitivity of grazing incidence neutron scattering, provides a promising novel approach to investigate curvature-dependent membrane phenomena on supported lipid bilayers.
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Affiliation(s)
- Nicolò Paracini
- Department
for Biomedical Science and Biofilms − Research Center for Biointerfaces,
Faculty of Health and Society, Malmö
University, 205 06Malmö, Sweden
| | | | - Rebecca Welbourn
- ISIS
Neutron & Muon Source, STFC, Rutherford
Appleton Laboratory, Harwell, OxfordshireOX11 0QX, U.K.
| | - Juan Francisco Gonzalez-Martinez
- Department
for Biomedical Science and Biofilms − Research Center for Biointerfaces,
Faculty of Health and Society, Malmö
University, 205 06Malmö, Sweden
| | - Kexin Zhu
- School
of Biological Sciences, Nanyang Technological
University, 639798Singapore
| | - Yansong Miao
- School
of Biological Sciences, Nanyang Technological
University, 639798Singapore
| | - Nageshwar Yepuri
- National
Deuteration Facility, Australian Nuclear
Science and Technology Organization (ANSTO), Lucas Heights, NSW2234, Australia
| | - Tamim A. Darwish
- National
Deuteration Facility, Australian Nuclear
Science and Technology Organization (ANSTO), Lucas Heights, NSW2234, Australia
| | - Christopher Garvey
- Heinz
Maier-Leibnitz
Zentrum (MLZ), Technische Universität
München, Lichtenbergstraβe 1, 85748Garching, Germany
| | - Sarah Waldie
- Department
for Biomedical Science and Biofilms − Research Center for Biointerfaces,
Faculty of Health and Society, Malmö
University, 205 06Malmö, Sweden
| | - Johan Larsson
- Department
for Biomedical Science and Biofilms − Research Center for Biointerfaces,
Faculty of Health and Society, Malmö
University, 205 06Malmö, Sweden
| | - Max Wolff
- Department
of Physics and Astronomy, Uppsala University, Box 516, 751 20Uppsala, Sweden
| | - Marité Cárdenas
- Department
for Biomedical Science and Biofilms − Research Center for Biointerfaces,
Faculty of Health and Society, Malmö
University, 205 06Malmö, Sweden
- School
of Biological Sciences, Nanyang Technological
University, 639798Singapore
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4
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Systematic design of cell membrane coating to improve tumor targeting of nanoparticles. Nat Commun 2022; 13:6181. [PMID: 36261418 PMCID: PMC9580449 DOI: 10.1038/s41467-022-33889-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 10/06/2022] [Indexed: 12/24/2022] Open
Abstract
Cell membrane (CM) coating technology is increasingly being applied in nanomedicine, but the entire coating procedure including adsorption, rupture, and fusion is not completely understood. Previously, we showed that the majority of biomimetic nanoparticles (NPs) were only partially coated, but the mechanism underlying this partial coating remains unclear, which hinders the further improvement of the coating technique. Here, we show that partial coating is an intermediate state due to the adsorption of CM fragments or CM vesicles, the latter of which could eventually be ruptured under external force. Such partial coating is difficult to self-repair to achieve full coating due to the limited membrane fluidity. Building on our understanding of the detailed coating process, we develop a general approach for fixing the partial CM coating: external phospholipid is introduced as a helper to increase CM fluidity, promoting the final fusion of lipid patches. The NPs coated with this approach have a high ratio of full coating (~23%) and exhibit enhanced tumor targeting ability in comparison to the NPs coated traditionally (full coating ratio of ~6%). Our results provide a mechanistic basis for fixing partial CM coating towards enhancing tumor accumulation.
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5
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Rogers JR, Geissler PL. Breakage of Hydrophobic Contacts Limits the Rate of Passive Lipid Exchange between Membranes. J Phys Chem B 2020; 124:5884-5898. [DOI: 10.1021/acs.jpcb.0c04139] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julia R. Rogers
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Phillip L. Geissler
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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6
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Nguyen MHL, DiPasquale M, Rickeard BW, Stanley CB, Kelley EG, Marquardt D. Methanol Accelerates DMPC Flip-Flop and Transfer: A SANS Study on Lipid Dynamics. Biophys J 2019; 116:755-759. [PMID: 30777306 DOI: 10.1016/j.bpj.2019.01.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/17/2019] [Accepted: 01/23/2019] [Indexed: 10/27/2022] Open
Abstract
Methanol is a common solubilizing agent used to study transmembrane proteins/peptides in biological and synthetic membranes. Using small angle neutron scattering and a strategic contrast-matching scheme, we show that methanol has a major impact on lipid dynamics. Under increasing methanol concentrations, isotopically distinct 1,2-dimyristoyl-sn-glycero-3-phosphocholine large unilamellar vesicle populations exhibit increased mixing. Specifically, 1,2-dimyristoyl-sn-glycero-3-phosphocholine transfer and flip-flop kinetics display linear and exponential rate enhancements, respectively. Ultimately, methanol is capable of influencing the structure-function relationship associated with bilayer composition (e.g., lipid asymmetry). The use of methanol as a carrier solvent, despite better simulating some biological conditions (e.g., antimicrobial attack), can help misconstrue lipid scrambling as the action of proteins or peptides, when in actuality it is a combination of solvent and biological agent. As bilayer compositional stability is crucial to cell survival and protein reconstitution, these results highlight the importance of methanol, and solvents in general, in biomembrane and proteolipid studies.
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Affiliation(s)
- Michael H L Nguyen
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada
| | - Mitchell DiPasquale
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada
| | - Brett W Rickeard
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada
| | | | - Elizabeth G Kelley
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland
| | - Drew Marquardt
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada.
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7
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Biswas KH, Cho NJ, Groves JT. Fabrication of Multicomponent, Spatially Segregated DNA and Protein-Functionalized Supported Membrane Microarray. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9781-9788. [PMID: 30032610 DOI: 10.1021/acs.langmuir.8b01364] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Deoxyribonucleic acid (DNA) has been used as a material for a variety of applications, including surface functionalization for cell biological or in vitro reconstitution studies. Use of DNA-based surface functionalization eliminates limitations of multiplexing posed by traditionally used methods in applications requiring spatially segregated surface functionalization. Recently, we have reported a stochastic, membrane fusion-based strategy to fabricate multicomponent membrane array substrates displaying spatially segregated protein ligands using biotin-streptavidin and Ni-NTA-polyhistidine interactions. Here, we report the delivery of DNA oligonucleotide-conjugated lipid molecules to membrane corrals, allowing spatially segregated membrane corral functionalization in a membrane microarray. Incubation of microbeads coated with the supported membrane resulted in an exchange of lipid contents with planar membrane corrals present on a micropatterned substrate. Increases in the system temperature and membrane corral size resulted in alterations in the rate constant of lipid exchange, which are in agreement with our previously developed analytical model and further confirm that lipid exchange is a diffusion-based process that takes place after the formation of a long "fusion-stalk" between the two membranes. We take advantage of the physical dimensions of the fusion-stalk with a large aspect ratio to deliver DNA oligonucleotide-conjugated lipid molecules to membrane corrals. We believe that the ability to functionalize membrane corrals with DNA oligonucleotides significantly increases the utility of the stochastic fusion-mediated lipid delivery strategy in the functionalization of biomolecules such as DNA or DNA-conjugated protein ligands.
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Affiliation(s)
- Kabir H Biswas
- Mechanobiology Institute , National University of Singapore , Singapore 117411 , Singapore
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Nam-Joon Cho
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
- School of Chemical and Biomedical Engineering , Nanyang Technological University , 62 Nanyang Drive , Singapore 637459 , Singapore
| | - Jay T Groves
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
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8
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Spherical-supported membranes as platforms for screening against membrane protein targets. Anal Biochem 2018; 549:58-65. [PMID: 29545094 PMCID: PMC5948183 DOI: 10.1016/j.ab.2018.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/09/2018] [Accepted: 03/12/2018] [Indexed: 11/23/2022]
Abstract
Screening assays performed against membrane protein targets (e.g. phage display) are hampered by issues arising from protein expression and purification, protein stability in detergent solutions and epitope concealment by detergent micelles. Here, we have studied a fast and simple method to improve screening against membrane proteins: spherical-supported bilayer lipid membranes (“SSBLM”). SSBLMs can be quickly isolated via low-speed centrifugation and redispersed in liquid solutions while presenting the target protein in a native-like lipid environment. To provide proof-of-concept, SSBLMs embedding the polytopic bacterial nucleoside transporter NupC were assembled on 100- and 200 nm silica particles. To test specific binding of antibodies, NupC was tagged with a poly-histidine epitope in one of its central loops between two transmembrane helices. Fluorescent labelling, small angle X-ray scattering (SAXS) and cryo-electron microscopy (cryo-EM) were used to monitor formation of the SSBLMs. Specific binding of an anti-his antibody and a gold-nitrilotriacetic acid (NTA) conjugate probe was confirmed with ELISAs and cryo-EM. SSBLMs for screening could be made with purified and lipid reconstituted NupC, as well as crude bacterial membrane extracts. We conclude that SSBLMs are a promising new means of presenting membrane protein targets for (biomimetic) antibody screening in a native-like lipid environment.
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9
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Biswas KH, Zhongwen C, Dubey AK, Oh D, Groves JT. Multicomponent Supported Membrane Microarray for Monitoring Spatially Resolved Cellular Signaling Reactions. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201800015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Kabir H. Biswas
- Mechanobiology Institute; National University of Singapore; Singapore 117411 Singapore
| | - Chen Zhongwen
- Mechanobiology Institute; National University of Singapore; Singapore 117411 Singapore
| | - Alok Kumar Dubey
- Mechanobiology Institute; National University of Singapore; Singapore 117411 Singapore
| | - Dongmyung Oh
- Mechanobiology Institute; National University of Singapore; Singapore 117411 Singapore
| | - Jay T. Groves
- Department of Chemistry; University of California; Berkeley CA 94720 USA
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10
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Wah B, Breidigan JM, Adams J, Horbal P, Garg S, Porcar L, Perez-Salas U. Reconciling Differences between Lipid Transfer in Free-Standing and Solid Supported Membranes: A Time-Resolved Small-Angle Neutron Scattering Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3384-3394. [PMID: 28300412 DOI: 10.1021/acs.langmuir.6b04013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Maintaining compositional lipid gradients across membranes in animal cells is essential to biological function, but what is the energetic cost to maintain these differences? It has long been recognized that studying the passive movement of lipids in membranes can provide insight into this toll. Confusingly the reported values of inter- and, particularly, intra-lipid transport rates of lipids in membranes show significant differences. To overcome this difficulty, biases introduced by experimental approaches have to be identified. The present study addresses the difference in the reported intramembrane transport rates of dimyristoylphosphatidylcholine (DMPC) on flat solid supports (fast flipping) and in curved free-standing membranes (slow flipping). Two possible scenarios are potentially at play: one is the difference in curvature of the membranes studied and the other the presence (or not) of the support. Using DMPC vesicles and DMPC supported membranes on silica nanoparticles of different radii, we found that an increase in curvature (from a diameter of 30 nm to a diameter of 100 nm) does not change the rates significantly, differing only by factors of order ∼1. Additionally, we found that the exchange rates of DMPC in supported membranes are similar to the ones in vesicles. And as previously reported, we found that the activation energies for exchange on free-standing and supported membranes are similar (84 and 78 kJ/mol, respectively). However, DMPC's flip-flop rates increase significantly when in a supported membrane, surpassing the exchange rates and no longer limiting the exchange process. Although the presence of holes or cracks in supported membranes explains the occurrence of fast lipid flip-flop in many studies, in defect-free supported membranes we find that fast flip-flop is driven by the surface's induced disorder of the bilayer's acyl chain packing as evidenced from their broad melting temperature behavior.
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Affiliation(s)
- Benny Wah
- Physics Department, University of Illinois at Chicago , Chicago, Illinois 60607, United States
| | - Jeffrey M Breidigan
- Physics Department, University of Illinois at Chicago , Chicago, Illinois 60607, United States
| | - Joseph Adams
- Physics Department, University of Illinois at Chicago , Chicago, Illinois 60607, United States
| | - Piotr Horbal
- Physics Department, University of Illinois at Chicago , Chicago, Illinois 60607, United States
| | - Sumit Garg
- Physics Department, University of Illinois at Chicago , Chicago, Illinois 60607, United States
- Materials Science Division, Argonne National Laboratory , Lemont, Illinois 60439, United States
| | - Lionel Porcar
- Large Scale Structure Group, Institut Laue-Langevin , Grenoble F-38042, France
- Department of Chemical Engineering, Colburn Laboratory, University of Delaware , Newark, Delaware 19716, United States
| | - Ursula Perez-Salas
- Physics Department, University of Illinois at Chicago , Chicago, Illinois 60607, United States
- Materials Science Division, Argonne National Laboratory , Lemont, Illinois 60439, United States
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11
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Xia Y, Charubin K, Marquardt D, Heberle FA, Katsaras J, Tian J, Cheng X, Liu Y, Nieh MP. Morphology-Induced Defects Enhance Lipid Transfer Rates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:9757-9764. [PMID: 27560711 DOI: 10.1021/acs.langmuir.6b02099] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Molecular transfer between nanoparticles has been considered to have important implications regarding nanoparticle stability. Recently, the interparticle spontaneous lipid transfer rate constant for discoidal bicelles was found to be very different from spherical, unilamellar vesicles (ULVs). Here, we investigate the mechanism responsible for this discrepancy. Analysis of the data indicates that lipid transfer is entropically favorable, but enthalpically unfavorable with an activation energy that is independent of bicelle size and long- to short-chain lipid molar ratio. Moreover, molecular dynamics simulations reveal a lower lipid dissociation energy cost in the vicinity of interfaces ("defects") induced by the segregation of the long- and short-chain lipids in bicelles; these defects are not present in ULVs. Taken together, these results suggest that the enhanced lipid transfer observed in bicelles arises from interfacial defects as a result of the hydrophobic mismatch between the long- and short-chain lipid species. Finally, the observed lipid transfer rate is found to be independent of nanoparticle stability.
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Affiliation(s)
| | | | - Drew Marquardt
- Institute of Molecular Biosciences, Biophysics Division, NAWI Graz, University of Graz , Graz 8010, Austria
- Department of Physics, Brock University , St. Catharines, Ontario L2S 3A1, Canada
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12
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Xia Y, Li M, Charubin K, Liu Y, Heberle FA, Katsaras J, Jing B, Zhu Y, Nieh MP. Effects of Nanoparticle Morphology and Acyl Chain Length on Spontaneous Lipid Transfer Rates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:12920-8. [PMID: 26540211 DOI: 10.1021/acs.langmuir.5b03291] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We report on studies of lipid transfer rates between different morphology nanoparticles and lipids with different length acyl chains. The lipid transfer rate of dimyristoylphosphatidylcholine (di-C14, DMPC) in discoidal "bicelles" (0.156 h(-1)) is 2 orders of magnitude greater than that of DMPC vesicles (ULVs) (1.1 × 10(-3) h(-1)). For both bicellar and ULV morphologies, increasing the acyl chain length by two carbons [going from di-C14 DMPC to di-C16, dipalmitoylphosphatidylcholine (DPPC)] causes lipid transfer rates to decrease by more than 2 orders of magnitude. Results from small angle neutron scattering (SANS), differential scanning calorimetry (DSC), and fluorescence correlation spectroscopy (FCS) are in good agreement. The present studies highlight the importance of lipid dynamic processes taking place in different morphology biomimetic membranes.
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Affiliation(s)
- Yan Xia
- Department of Chemical and Biomolecular Engineering, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Ming Li
- Polymer Program, Institute of Materials Science, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Kamil Charubin
- Department of Chemical and Biomolecular Engineering, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Ying Liu
- Department of Chemical and Biomolecular Engineering, University of Connecticut , Storrs, Connecticut 06269, United States
| | - Frederick A Heberle
- Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831 United States
- Joint Institute for Neutron Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - John Katsaras
- Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831 United States
- Department of Physics and Astronomy, University of Tennessee , Knoxville, Tennessee 37996, United States
- Joint Institute for Neutron Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Benxin Jing
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Yingxi Zhu
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , Notre Dame, Indiana 46556, United States
- Department of Chemical Engineering and Materials Science, Wayne State University , Detroit, Michigan 48202 United States
| | - Mu-Ping Nieh
- Department of Chemical and Biomolecular Engineering, University of Connecticut , Storrs, Connecticut 06269, United States
- Polymer Program, Institute of Materials Science, University of Connecticut , Storrs, Connecticut 06269, United States
- Department of Biomedical Engineering, University of Connecticut , Storrs, Connecticut 06269, United States
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13
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Fukada K, Taniguchi T, Shiratori S. Viscoelastic and durability analysis of nanostructured composite layers of polyelectrolyte and nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra07066j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We have evaluated the abrasion and bending durabilities of stacked polymer/nanoparticle layer-by-layer films.
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Affiliation(s)
- Kenta Fukada
- School of Integrated Design Engineering
- Center for Science and Technology for Designing Functions
- Graduate School of Science and Technology
- Keio University
- Yokohama
| | - Taihei Taniguchi
- School of Integrated Design Engineering
- Center for Science and Technology for Designing Functions
- Graduate School of Science and Technology
- Keio University
- Yokohama
| | - Seimei Shiratori
- School of Integrated Design Engineering
- Center for Science and Technology for Designing Functions
- Graduate School of Science and Technology
- Keio University
- Yokohama
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