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Mitra S, Sharma VK, Ghosh SK. Effects of ionic liquids on biomembranes: A review on recent biophysical studies. Chem Phys Lipids 2023; 256:105336. [PMID: 37586678 DOI: 10.1016/j.chemphyslip.2023.105336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/05/2023] [Accepted: 08/11/2023] [Indexed: 08/18/2023]
Abstract
Ionic liquids (ILs) have been emerged as a versatile class of compounds that can be easily tuned to achieve desirable properties for various applications. The ability of ILs to interact with biomembranes has attracted significant interest, as they have been shown to modulate membrane properties in ways that may have implications for various biological processes. This review provides an overview of recent studies that have investigated the interaction between ILs and biomembranes. We discuss the effects of ILs on the physical and chemical properties of biomembranes, including changes in membrane fluidity, permeability, and stability. We also explore the mechanisms underlying the interaction of ILs with biomembranes, such as electrostatic interactions, hydrogen bonding, and van der Waals forces. Additionally, we discuss the future prospects of this field.
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Affiliation(s)
- Saheli Mitra
- Department of Physics, School of Natural Sciences, Shiv Nadar Institution of Eminence, NH 91, Tehsil Dadri, G. B. Nagar, Uttar Pradesh 201314, India.
| | - Veerendra K Sharma
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India.
| | - Sajal K Ghosh
- Department of Physics, School of Natural Sciences, Shiv Nadar Institution of Eminence, NH 91, Tehsil Dadri, G. B. Nagar, Uttar Pradesh 201314, India.
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2
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Paul D, Paul A, Mukherjee D, Saroj S, Ghosal M, Pal S, Senapati D, Chakrabarti J, Pal SK, Rakshit T. A Mechanoelastic Glimpse on Hyaluronan-Coated Extracellular Vesicles. J Phys Chem Lett 2022; 13:8564-8572. [PMID: 36069730 DOI: 10.1021/acs.jpclett.2c01629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Cancer cells secrete extracellular vesicles (EVs) covered with a carbohydrate polymer, hyaluronan (HA), linked to tumor malignancy. Herein, we have unravelled the contour lengths of HA on a single cancer cell-derived EV surface using single-molecule force spectroscopy (SMFS), which divulges the presence of low molecular weight HA (LMW-HA < 200 kDa). We also discovered that these LMW-HA-EVs are significantly more elastic than the normal cell-derived EVs. This intrinsic elasticity of cancer EVs could be directly allied to the LMW-HA abundance and associated labile water network on EV surface as revealed by correlative SMFS, hydration dynamics with fluorescence spectroscopy, and molecular dynamics simulations. This method emerges as a molecular biosensor of the cancer microenvironment.
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Affiliation(s)
- Debashish Paul
- Department of Chemistry, Shiv Nadar Institute of Eminence, Delhi-NCR, Tehsil Dadri UP 201314, Uttar Pradesh, India
| | - Anirban Paul
- Department of Physics of Complex Systems, S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India
| | - Dipanjan Mukherjee
- Department of Chemical and Biological Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India
| | - Saroj Saroj
- Department of Chemistry, Shiv Nadar Institute of Eminence, Delhi-NCR, Tehsil Dadri UP 201314, Uttar Pradesh, India
| | - Manorama Ghosal
- Chemical Science Division, Saha Institute of Nuclear Physics, HBNI, Kolkata 700064, India
| | - Suchetan Pal
- Department of Chemistry, Indian Institute of Technology, Bhilai, CG 492015, India
| | - Dulal Senapati
- Chemical Science Division, Saha Institute of Nuclear Physics, HBNI, Kolkata 700064, India
| | - Jaydeb Chakrabarti
- Department of Physics of Complex Systems, S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India
- Department of Chemical and Biological Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India
| | - Samir Kumar Pal
- Department of Chemical and Biological Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India
| | - Tatini Rakshit
- Department of Chemistry, Shiv Nadar Institute of Eminence, Delhi-NCR, Tehsil Dadri UP 201314, Uttar Pradesh, India
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3
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Mukherjee D, Chakraborty G, Hasan MN, Pal U, Singh P, Rakshit T, Alsantali RI, Saha Dasgupta T, Ahmed S, Das R, Pal SK. Reversible photoswitching of spiropyran in biomolecular interfaces: A combined spectroscopy and computational study. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sharma VK, Gupta J, Srinivasan H, Bhatt H, García Sakai V, Mitra S. Curcumin Accelerates the Lateral Motion of DPPC Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:9649-9659. [PMID: 35878409 DOI: 10.1021/acs.langmuir.2c01250] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Curcumin, the main ingredient in turmeric, has attracted attention due to its potential anti-inflammatory, anticancer, wound-healing, and antioxidant properties. Though curcumin efficacy is related to its interaction with biomembranes, there are few reports on the effects of curcumin on the lateral motion of lipids, a fundamental process in the cell membrane. Employing the quasielastic neutron scattering technique, we explore the effects of curcumin on the lateral diffusion of the dipalmotylphosphatidylcholine (DPPC) membrane. Our investigation is also supported by Fourier transform infrared spectroscopy, dynamic light scattering, and calorimetry to understand the interaction between curcumin and the DPPC membrane. It is found that curcumin significantly modulates the packing arrangement and conformations of DPPC lipid, leading to enhanced membrane dynamics. In particular, we find that the presence of curcumin substantially accelerates the DPPC lateral motion in both ordered and fluid phases. The effects are more pronounced in the ordered phase where the lateral diffusion coefficient increases by 23% in comparison to 9% in the fluid phase. Our measurements provide critical insights into molecular mechanisms underlying increased lateral diffusion. In contrast, the localized internal motions of DPPC are barely altered, except for a marginal enhancement observed in the ordered phase. In essence, these findings indicate that curcumin is favorably located at the membrane interface rather than in a transbilayer configuration. Further, the unambiguous evidence that curcumin modulates the membrane dynamics at a molecular level supports a possible action mechanism in which curcumin can act as an allosteric regulator of membrane functionality.
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Affiliation(s)
- Veerendra Kumar Sharma
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Jyoti Gupta
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Harish Srinivasan
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Himal Bhatt
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
- High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Victoria García Sakai
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, U.K
| | - Subhankur Mitra
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
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Zhai R, Ma J, An Y, Wen Z, Liu Y, Sun Q, Xie P, Zhao S. Ultra-stable Linalool/water Pickering Emulsions: A Combined Experimental and Simulation Study. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Sharma VK, Mamontov E. Multiscale lipid membrane dynamics as revealed by neutron spectroscopy. Prog Lipid Res 2022; 87:101179. [PMID: 35780913 DOI: 10.1016/j.plipres.2022.101179] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/25/2022] [Accepted: 06/27/2022] [Indexed: 12/22/2022]
Abstract
The plasma membrane is one of the principal structural components of the cell and, therefore, one of the key components of the cellular life. Because the membrane's dynamics links the membrane's structure and function, the complexity and the broad range of the membrane's motions are essential for the enormously diverse functionality of the cell membrane. Even for the main membrane component, the lipid bilayer, considered alone, the range and complexity of the lipid motions are remarkable. Spanning the time scale from sub-picosecond to minutes and hours, the lipid motion in a bilayer is challenging to study even when a broad array of dynamic measurement techniques is employed. Neutron scattering plays a special role among such dynamic measurement techniques, particularly, because it involves the energy transfers commensurate with the typical intra- and inter- molecular dynamics and the momentum transfers commensurate with intra- and inter-molecular distances. Thus, using neutron scattering-based techniques, the spatial and temporal information on the lipid motion can be obtained and analysed simultaneously. Protium vs. deuterium sensitivity and non-destructive character of the neutron probe add to the remarkable prowess of neutron scattering for elucidating the lipid dynamics. Herein we present an overview of the neutron scattering-based studies of lipid dynamics in model membranes, with a discussion of the direct relevance and implications to the real-life cell membranes. The latter are much more complex systems than simple model membranes, consisting of heterogeneous non-stationary domains composed of lipids, proteins, and other small molecules, such as carbohydrates. Yet many fundamental aspects of the membrane behavior and membrane interactions with other molecules can be understood from neutron scattering measurements of the model membranes. For example, such studies can provide a great deal of information on the interactions of antimicrobial compounds with the lipid matrix of a pathogen membrane, or the interactions of drug molecules with the plasma membrane. Finally, we briefly discuss the recently emerging field of neutron scattering membrane studies with a reach far beyond the model membrane systems.
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Affiliation(s)
- V K Sharma
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India; Homi Bhabha National Institute, Mumbai 400094, India.
| | - E Mamontov
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
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Wu D, Saleem M, He T, He G. The Mechanism of Metal Homeostasis in Plants: A New View on the Synergistic Regulation Pathway of Membrane Proteins, Lipids and Metal Ions. MEMBRANES 2021; 11:membranes11120984. [PMID: 34940485 PMCID: PMC8706360 DOI: 10.3390/membranes11120984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/04/2021] [Accepted: 12/11/2021] [Indexed: 12/15/2022]
Abstract
Heavy metal stress (HMS) is one of the most destructive abiotic stresses which seriously affects the growth and development of plants. Recent studies have shown significant progress in understanding the molecular mechanisms underlying plant tolerance to HMS. In general, three core signals are involved in plants' responses to HMS; these are mitogen-activated protein kinase (MAPK), calcium, and hormonal (abscisic acid) signals. In addition to these signal components, other regulatory factors, such as microRNAs and membrane proteins, also play an important role in regulating HMS responses in plants. Membrane proteins interact with the highly complex and heterogeneous lipids in the plant cell environment. The function of membrane proteins is affected by the interactions between lipids and lipid-membrane proteins. Our review findings also indicate the possibility of membrane protein-lipid-metal ion interactions in regulating metal homeostasis in plant cells. In this review, we investigated the role of membrane proteins with specific substrate recognition in regulating cell metal homeostasis. The understanding of the possible interaction networks and upstream and downstream pathways is developed. In addition, possible interactions between membrane proteins, metal ions, and lipids are discussed to provide new ideas for studying metal homeostasis in plant cells.
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Affiliation(s)
- Danxia Wu
- College of Agricultural, Guizhou University, Guiyang 550025, China;
| | - Muhammad Saleem
- Department of Biological Sciences, Alabama State University, Montgomery, AL 36104, USA;
| | - Tengbing He
- College of Agricultural, Guizhou University, Guiyang 550025, China;
- Institute of New Rural Development, West Campus, Guizhou University, Guiyang 550025, China
- Correspondence: (T.H.); (G.H.)
| | - Guandi He
- College of Agricultural, Guizhou University, Guiyang 550025, China;
- Correspondence: (T.H.); (G.H.)
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8
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Nandi S, Layek S, Nandi PK, Bera N, Hazra R, Sarkar N. Self-assembly of artificial sweetener aspartame adversely affects phospholipid membranes: plausible reason for its deleterious effects. Chem Commun (Camb) 2021; 57:10532-10535. [PMID: 34553202 DOI: 10.1039/d1cc04482f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The prolonged intake of the artificial sweetener aspartame is known to have deleterious effects. Our biophysical experimentations indicate that aspartame forms self-assembled cytotoxic fibrillar etiologies that affect the intrinsic integrity of the phospholipid membrane bilayer through electrostatic interaction and hydrophobic insertion, thereby making the membrane less rigid and more heterogeneous.
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Affiliation(s)
- Sourav Nandi
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
| | - Souvik Layek
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
| | - Pratyush Kiran Nandi
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
| | - Nanigopal Bera
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
| | - Ritwik Hazra
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
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Su L, Sun J, Ding F, Gao X, Zheng L. Molecular insight into photoresponsive surfactant regulated reversible emulsification and demulsification processes. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Kundu S, Malik S, Ghosh M, Nandi S, Pyne A, Debnath A, Sarkar N. A Comparative Study on DMSO-Induced Modulation of the Structural and Dynamical Properties of Model Bilayer Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2065-2078. [PMID: 33529530 DOI: 10.1021/acs.langmuir.0c03037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Modulating the structures and properties of biomembranes via permeation of small amphiphilic molecules is immensely important, having diverse applications in cell biology, biotechnology, and pharmaceuticals, because their physiochemical and biological interactions lead to new pathways for transdermal drug delivery and administration. In this work, we have elucidated the role of dimethyl sulfoxide (DMSO), broadly used as a penetration-enhancing agent and cryoprotective agent on model lipid membranes, using a combination of fluorescence microscopy and time-resolved fluorescence spectroscopy. Spatially resolved fluorescence lifetime imaging microscopy (FLIM) has been employed to unravel how the fluidity of the DMSO-induced bilayer regulates the structural alteration of the vesicles. Moreover, we have also shown that the dehydration effect of DMSO leads to weakening of the hydrogen bond between lipid headgroups and water molecules and results in faster solvation dynamics as demonstrated by femtosecond time-resolved fluorescence spectroscopy. It has been gleaned that the water dynamics becomes faster because bilayer rigidity decreases in the presence of DMSO, which is also supported by time-resolved rotational anisotropy measurements. The enhanced diffusivity and increased membrane fluidity in the presence of DMSO are further ratified at the single-molecule level through fluorescence correlation spectroscopy (FCS) measurements. Our results indicate that while the presence of DMSO significantly affects the 1,2-dimyristoyl-rac-glycero-3-phosphocholine (DMPC) and 1,2-dipalmitoyl-rac-glycero-3-phosphatidylcholine (DPPC) bilayers, it has a weak effect on 1,2-dimyristoyl-sn-glycero-3-phospho-rac-glycerol (DMPG) vesicles, which might explain the preferential interaction of DMSO with the positively charged choline group present in DMPC and DPPC vesicles. The experimental findings have also been further verified with molecular dynamics simulation studies. Moreover, it has been observed that DMSO is likely to have a differential effect on heterogeneous bilayer membranes depending on the structure and composition of their headgroups. Our results illuminate the importance of probing the lipid structure and composition of cellular membranes in determining the effects of cryoprotective agents.
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Affiliation(s)
- Sangita Kundu
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Sheeba Malik
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Meghna Ghosh
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Sourav Nandi
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Arghajit Pyne
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Ananya Debnath
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
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Sharma VK, Ghosh SK, García Sakai V, Mukhopadhyay R. Enhanced Microscopic Dynamics of a Liver Lipid Membrane in the Presence of an Ionic Liquid. Front Chem 2020; 8:577508. [PMID: 33330366 PMCID: PMC7710540 DOI: 10.3389/fchem.2020.577508] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/01/2020] [Indexed: 12/19/2022] Open
Abstract
Ionic liquids (ILs) are an important class of emerging compounds, owing to their widespread industrial applications in high-performance lubricants for food and cellulose processing, despite their toxicity to living organisms. It is believed that this toxicity is related to their actions on the cellular membrane. Hence, it is vital to understand the interaction of ILs with cell membranes. Here, we report on the effects of an imidazolium-based IL, 1-decyl-3-methylimidazolium tetrafluoroborate (DMIM[BF4]), on the microscopic dynamics of a membrane formed by liver extract lipid, using quasielastic neutron scattering (QENS). The presence of significant quasielastic broadening indicates that stochastic molecular motions of the lipids are active in the system. Two distinct molecular motions, (i) lateral motion of the lipid within the membrane leaflet and (ii) localized internal motions of the lipid, are found to contribute to the QENS broadening. While the lateral motion could be described assuming continuous diffusion, the internal motion is explained on the basis of localized translational diffusion. Incorporation of the IL into the liver lipid membrane is found to enhance the membrane dynamics by accelerating both lateral and internal motions of the lipids. This indicates that the IL induces disorder in the membrane and enhances the fluidity of lipids. This could be explained on the basis of its location in the lipid membrane. Results are compared with various other additives and we provide an indication of a possible correlation between the effects of guest molecules on the dynamics of the membrane and its location within the membrane.
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Affiliation(s)
- Veerendra K Sharma
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute, Mumbai, India
| | - Sajal K Ghosh
- Department of Physics, School of Natural Sciences, Shiv Nadar University, Greater Noida, India
| | - Victoria García Sakai
- Rutherford Appleton Laboratory, ISIS Pulsed Neutron and Muon Facility, Science and Technology Facilities Council, Didcot, United Kingdom
| | - R Mukhopadhyay
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute, Mumbai, India
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Kaur B, Kaur G, Chaudhary GR, Sharma VK, Srinivasan H, Mitra S, Sharma A, Gawali SL, Hassan P. An investigation of morphological, microscopic dynamics, fluidity, and physicochemical variations in Cu-decorated metallosomes with cholesterol. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Onyango MG, Attardo GM, Kelly ET, Bialosuknia SM, Stout J, Banker E, Kuo L, Ciota AT, Kramer LD. Zika Virus Infection Results in Biochemical Changes Associated With RNA Editing, Inflammatory and Antiviral Responses in Aedes albopictus. Front Microbiol 2020; 11:559035. [PMID: 33133033 PMCID: PMC7561680 DOI: 10.3389/fmicb.2020.559035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 09/14/2020] [Indexed: 12/11/2022] Open
Abstract
Rapid and significant range expansion of both the Zika virus (ZIKV) and its Aedes vector species has resulted in the declaration of ZIKV as a global health threat. Successful transmission of ZIKV by its vector requires a complex series of interactions between these entities including the establishment, replication and dissemination of the virus within the mosquito. The metabolic conditions within the mosquito tissues play a critical role in mediating the crucial processes of viral infection and replication and represent targets for prevention of virus transmission. In this study, we carried out a comprehensive metabolomic phenotyping of ZIKV infected and uninfected Ae. albopictus by untargeted analysis of primary metabolites, lipids and biogenic amines. We performed a comparative metabolomic study of infection state with the aim of understanding the biochemical changes resulting from the interaction between the ZIKV and its vector. We have demonstrated that ZIKV infection results in changes to the cellular metabolic environment including a significant enrichment of inosine and pseudo-uridine (Ψ) levels which may be associated with RNA editing activity. In addition, infected mosquitoes demonstrate a hypoglycemic phenotype and show significant increases in the abundance of metabolites such as prostaglandin H2, leukotriene D4 and protoporphyrinogen IX which are associated with antiviral activity. These provide a basis for understanding the biochemical response to ZIKV infection and pathology in the vector. Future mechanistic studies targeting these ZIKV infection responsive metabolites and their associated biosynthetic pathways can provide inroads to identification of mosquito antiviral responses with infection blocking potential.
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Affiliation(s)
- Maria G. Onyango
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, United States
| | - Geoffrey M. Attardo
- Department of Entomology and Nematology, University of California, Davis, Davis, CA, United States
| | - Erin Taylor Kelly
- Department of Entomology and Nematology, University of California, Davis, Davis, CA, United States
| | - Sean M. Bialosuknia
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, United States
- School of Public Health, State University of New York, Albany, NY, United States
| | - Jessica Stout
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, United States
| | - Elyse Banker
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, United States
| | - Lili Kuo
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, United States
| | - Alexander T. Ciota
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, United States
- School of Public Health, State University of New York, Albany, NY, United States
| | - Laura D. Kramer
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, United States
- School of Public Health, State University of New York, Albany, NY, United States
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Sharma VK, Srinivasan H, García Sakai V, Mitra S. Dioctadecyldimethylammonium bromide, a surfactant model for the cell membrane: Importance of microscopic dynamics. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2020; 7:051301. [PMID: 32984433 PMCID: PMC7511241 DOI: 10.1063/4.0000030] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/25/2020] [Indexed: 05/11/2023]
Abstract
Cationic lipid membranes have recently attracted huge attention both from a fundamental point of view and due to their practical applications in drug delivery and gene therapy. The dynamical behavior of the lipids in the membrane is a key parameter controlling various physiological processes and drug release kinetics. Here, we review the dynamical and thermotropic phase behavior of an archetypal cationic lipid membrane, dioctadecyldimethylammonium bromide (DODAB), as studied using neutron scattering and molecular dynamics simulation techniques. DODAB membranes exhibit interesting phase behavior, specifically showing coagel, gel, and fluid phases in addition to a large hysteresis when comparing heating and cooling cycles. The dynamics of the lipid membrane is strongly dependent on the physical state of the bilayer. Lateral diffusion of the lipids is faster, by an order of magnitude, in the fluid phase than in the ordered phase. It is not only the characteristic times but also the nature of the segmental motions that differ between the ordered and fluid phases. The effect of different membrane active molecules including drugs, stimulants, gemini surfactants, and unsaturated lipids, on the dynamical and thermotropic phase behavior of the DODAB membrane, is also discussed here. Various interesting features such as induced synchronous ordering between polar head groups and tails, sub diffusive behavior, etc., are observed. The results shed light on the interaction between these additives and the membrane, which is found to be a complex interplay between the physical state of the membrane, charge, concentration, molecular architecture of the additives, and their location within the membrane.
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Affiliation(s)
- V. K. Sharma
- Author to whom correspondence should be addressed: and . Phone: +91-22-25594604
| | | | - V. García Sakai
- ISIS Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
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15
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Nan Y, Li W, Jin Z. Role of Alcohol as a Cosurfactant at the Brine-Oil Interface under a Typical Reservoir Condition. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5198-5207. [PMID: 32338007 DOI: 10.1021/acs.langmuir.0c00494] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A cosurfactant is a chemical used in combination with a surfactant to enrich the properties of the primary surfactant formulation. Understanding the roles of a cosurfactant is of great importance in designing a chemical solution with desired features. Herein, we report a molecular dynamics simulation study to explore the roles of alcohol (propanol) as a cosurfactant at a brine-oil interface in chemical flooding under a typical reservoir condition (353 K and 200 bar). We demonstrate that propanol, as a cosurfactant, can be transported through oil and brine phases; such a dislocation of propanol in the system is a dynamic process. The interfacial tension between brine and oil decreases as propanol concentration in the system increases. This is because propanol can form hydrogen bonds with water molecules while it decreases the density of hydrogen bonds formed between the surfactant and water. The introduction of propanol does not always increase the local fluidity of surfactants at the interfaces. A local maximum fluidity was observed when the surfactants are more perpendicular to the interfaces. Our work should provide important insights into the design of the surfactant formulas for chemical flooding during enhanced oil recovery.
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Affiliation(s)
- Yiling Nan
- School of Mining and Petroleum Engineering, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Wenhui Li
- School of Mining and Petroleum Engineering, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Zhehui Jin
- School of Mining and Petroleum Engineering, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
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Bhatt Mitra J, Sharma VK, Mukherjee A, Garcia Sakai V, Dash A, Kumar M. Ubiquicidin-Derived Peptides Selectively Interact with the Anionic Phospholipid Membrane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:397-408. [PMID: 31793791 DOI: 10.1021/acs.langmuir.9b03243] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Ubiquicidin (UBI)/ribosomal protein S30 (RS30) is an intracellular protein with antimicrobial activities against various pathogens. UBI (29-41) and UBI (31-38) are two crucial peptides derived from Ubiquicidin, which have shown potential as infection imaging probes. Here, we report the interactions of UBI-derived peptides with anionic and zwitterionic phospholipid membranes. Our isothermal titration calorimetry results show that both peptides selectively interact with the anionic phospholipid membrane (a model bacterial membrane) and reside mainly on the membrane surface. The interaction of UBI-derived peptides with the anionic phospholipid membrane is exothermic and driven by both enthalpy (ΔH) and entropy (ΔS), with the entropic term TΔS being greater than ΔH. This large entropic term can be a result of the aggregation of the anionic vesicles, which is confirmed by dynamic light scattering (DLS) measurements. DLS data show that vesicle aggregation is enhanced with increasing peptide-to-lipid molar ratios (P/L) and is found to be more pronounced in the case of UBI (29-41). DLS results are found to be consistent with independent transmission measurements. To study the effects of UBI-derived peptides on the microscopic dynamics of the model bacterial membrane, quasielastic neutron scattering (QENS) measurements have been carried out. The QENS results show that both peptides restrict the lateral motion of the lipid within the leaflet. UBI (29-41) acts as a stronger stiffening agent, hindering the lateral diffusion of lipids more efficiently than UBI (31-38). To our knowledge, this is the first report illustrating the mechanism of interaction of UBI-derived peptides with model membranes. This study also has implications for the improvement and design of antimicrobial peptide-based infection imaging probes.
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Affiliation(s)
| | | | - Archana Mukherjee
- Homi Bhabha National Institute , Anushaktinagar , Mumbai 400094 , India
| | - V Garcia Sakai
- ISIS Facility, Science and Technology Facilities Council , Rutherford Appleton Laboratory , Didcot OX11 0QX , U.K
| | - Ashutosh Dash
- Homi Bhabha National Institute , Anushaktinagar , Mumbai 400094 , India
| | - Mukesh Kumar
- Homi Bhabha National Institute , Anushaktinagar , Mumbai 400094 , India
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Ma J, Song X, Luo J, Zhao T, Yu H, Peng B, Zhao S. Molecular Dynamics Simulation Insight into Interfacial Stability and Fluidity Properties of Microemulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13636-13645. [PMID: 31560551 DOI: 10.1021/acs.langmuir.9b02325] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Although the interfacial properties of microemulsions have been extensively studied in both experimental and simulation research studies, the molecular mechanisms of stability and fluidity about microemulsion are still poorly understood. Herein, we report a molecular dynamics simulation study to elaborate the motion of an emulsion droplet involving dichain surfactant Aerosol OT (AOT) and its dynamics evolution at the oil-water interface. By varying the concentrations of AOT, we show that the interfacial thickness and emulsification rate display a piecewise change as the interfacial coverage increases and the W/O emulsion is more stable than the O/W one while O/W emulsion presents better fluidity. In addition, the dispersed system combined with water/AOT/n-heptane tends to form a W/O microemulsion instead of an O/W microemulsion due to the structural collapse of the latter. This work provides a molecular understanding of microemulsion interfacial stability and fluidity.
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Affiliation(s)
- Jule Ma
- State Key Laboratory of Chemical Engineering and School of Chemical Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - Xianyu Song
- State Key Laboratory of Chemical Engineering and School of Chemical Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - Jianhui Luo
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina , Beijing 100083 , China
- Key Laboratory of Nano Chemistry (KLNC) , CNPC , Beijing 100083 , China
| | - Teng Zhao
- State Key Laboratory of Chemical Engineering and School of Chemical Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - Hongping Yu
- State Key Laboratory of Chemical Engineering and School of Chemical Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
| | - Baoliang Peng
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina , Beijing 100083 , China
- Key Laboratory of Nano Chemistry (KLNC) , CNPC , Beijing 100083 , China
| | - Shuangliang Zhao
- State Key Laboratory of Chemical Engineering and School of Chemical Engineering , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China
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