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Feng Y, Kochovski Z, Arenz C, Lu Y, Kneipp J. Structure and Interaction of Ceramide-Containing Liposomes with Gold Nanoparticles as Characterized by SERS and Cryo-EM. J Phys Chem C Nanomater Interfaces 2022; 126:13237-13246. [PMID: 35983312 PMCID: PMC9377338 DOI: 10.1021/acs.jpcc.2c01930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Due to the great potential of surface-enhanced Raman scattering (SERS) as local vibrational probe of lipid-nanostructure interaction in lipid bilayers, it is important to characterize these interactions in detail. The interpretation of SERS data of lipids in living cells requires an understanding of how the molecules interact with gold nanostructures and how intermolecular interactions influence the proximity and contact between lipids and nanoparticles. Ceramide, a sphingolipid that acts as important structural component and regulator of biological function, therefore of interest to probing, lacks a phosphocholine head group that is common to many lipids used in liposome models. SERS spectra of liposomes of a mixture of ceramide, phosphatidic acid, and phosphatidylcholine, as well as of pure ceramide and of the phospholipid mixture are reported. Distinct groups of SERS spectra represent varied contributions of the choline, sphingosine, and phosphate head groups and the structures of the acyl chains. Spectral bands related to the state of order of the membrane and moreover to the amide function of the sphingosine head groups indicate that the gold nanoparticles interact with molecules involved in different intermolecular relations. While cryogenic electron microscopy shows the formation of bilayer liposomes in all preparations, pure ceramide was found to also form supramolecular, concentric stacked and densely packed lamellar, nonliposomal structures. That the formation of such supramolecular assemblies supports the intermolecular interactions of ceramide is indicated by the SERS data. The unique spectral features that are assigned to the ceramide-containing lipid model systems here enable an identification of these molecules in biological systems and allow us to obtain information on their structure and interaction by SERS.
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Affiliation(s)
- Yiqing Feng
- Department
of Chemistry, Humboldt-Universität
zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
- Einstein
Center of Catalysis (EC2/BIG-NSE), Technische
Universität Berlin, Marchstraße 6-8, 10587 Berlin, Germany
| | - Zdravko Kochovski
- Department
of Electrochemical Energy Storage, Helmholtz-Zentrum
Berlin für Materialien und Energie, 14109 Berlin, Germany
| | - Christoph Arenz
- Department
of Chemistry, Humboldt-Universität
zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Yan Lu
- Department
of Electrochemical Energy Storage, Helmholtz-Zentrum
Berlin für Materialien und Energie, 14109 Berlin, Germany
- Institute
of Chemistry, University of Potsdam, 14467 Potsdam, Germany
| | - Janina Kneipp
- Department
of Chemistry, Humboldt-Universität
zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
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Das T, Ammal A, Harshey A, Mishra V, Srivastava A. Vibrational spectroscopic approaches for semen analysis in forensic investigation: State of the art and way forward. Microchem J 2021; 171:106810. [DOI: 10.1016/j.microc.2021.106810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Di Foggia M, Tsukada M, Taddei P. Vibrational Study on Structure and Bioactivity of Protein Fibers Grafted with Phosphorylated Methacrylates. Molecules 2021; 26:6487. [PMID: 34770891 PMCID: PMC8587459 DOI: 10.3390/molecules26216487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/25/2021] [Accepted: 10/25/2021] [Indexed: 11/25/2022] Open
Abstract
In the last decades, silk fibroin and wool keratin have been considered functional materials for biomedical applications. In this study, fabrics containing silk fibers from Bombyx mori and Tussah silk fibers from Antheraea pernyi, as well as wool keratin fabrics, were grafted with phosmer CL and phosmer M (commercial names, i.e., methacrylate monomers containing phosphate groups in the molecular side chain) with different weight gains. Both phosmers were recently proposed as flame retarding agents, and their chemical composition suggested a possible application in bone tissue engineering. IR and Raman spectroscopy were used to disclose the possible structural changes induced by grafting and identify the most reactive amino acids towards the phosmers. The same techniques were used to investigate the nucleation of a calcium phosphate phase on the surface of the samples (i.e., bioactivity) after ageing in simulated body fluid (SBF). The phosmers were found to polymerize onto the biopolymers efficiently, and tyrosine and serine underwent phosphorylation (monitored through the strengthening of the Raman band at 1600 cm-1 and the weakening of the Raman band at 1400 cm-1, respectively). In grafted wool keratin, cysteic acid and other oxidation products of disulphide bridges were detected together with sulphated residues. Only slight conformational changes were observed upon grafting, generally towards an enrichment in ordered domains, suggesting that the amorphous regions were more prone to react (and, sometimes, degrade). All samples were shown to be bioactive, with a weight gain of up to 8%. The most bioactive samples contained the highest phosmers amounts, i.e., the highest amounts of phosphate nucleating sites. The sulphate/sulphonate groups present in grafted wool samples appeared to increase bioactivity, as shown by the five-fold increase of the IR phosphate band at 1040 cm-1.
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Affiliation(s)
- Michele Di Foggia
- Department of Biomedical and Neuromotor Sciences, University of Bologna, via Belmeloro 8/2, 40126 Bologna, Italy;
| | - Masuhiro Tsukada
- Division of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan;
| | - Paola Taddei
- Department of Biomedical and Neuromotor Sciences, University of Bologna, via Belmeloro 8/2, 40126 Bologna, Italy;
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Hsu WH, Kao YC, Chuang SH, Wang JS, Lai JY, Tsai HC. Thermosensitive double network of zwitterionic polymers for controlled mechanical strength of hydrogels. RSC Adv 2019; 9:24241-24247. [PMID: 35527906 PMCID: PMC9069832 DOI: 10.1039/c9ra03834e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 07/09/2019] [Indexed: 12/28/2022] Open
Abstract
Zwitterionic hydrogels have promising potential as a result of their anti-fouling and biocompatible properties, but they have recently also gained further attention due to their controllable stimuli responses. We successfully synthesized two zwitterionic polymers, poly(2-methacryloyloxyethyl phosphorylcholine) (poly-MPC) and poly(2-(methacryloyloxy)ethyl dimethyl-(3-sulfopropyl)ammonium hydroxide) (poly-DMAPS), which have complementary ionic sequences in their respective zwitterionic side groups and likely form an interpenetrating double network to improve their mechanical strength. The synthesized poly-MPC was blended in a poly-DMAPS matrix (MD gel) and showed high viscosity, while poly-DMAPS was blended in a poly-MPC hydrogel (DM gel) and revealed UCST behavior as the temperature increased. In addition, cross-section images of the MD hydrogel exhibited its compact and uniform structure, while the DM gel was found to exhibit a porous micro-structure with clear boundaries. The results explained the low viscosity of the DM gel, which was also confirmed via 3D Raman mapping. To sum up, the preliminary data demonstrated that binary zwitterionic hydrogels have thermosensitive mechanical properties, promoting further bio-applications in the future, such as in wound healing. Zwitterionic hydrogels have promising anti-fouling properties but weak mechanical strength. Here, we synthesized two polyzwitterions, formulated them as double network hydrogels for improving strength and for controlled by temperature stimuli.![]()
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Affiliation(s)
- Wei-Hsin Hsu
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology Taiwan Republic of China .,Instrument Technology Research Center, National Applied Research Laboratories Taiwan Republic of China
| | - Yu-Chih Kao
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology Taiwan Republic of China
| | - Shun-Hao Chuang
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology Taiwan Republic of China
| | - Jun-Sheng Wang
- Instrument Technology Research Center, National Applied Research Laboratories Taiwan Republic of China
| | - Juin-Yih Lai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology Taiwan Republic of China .,Advanced Membrane Materials Center, National Taiwan University of Science and Technology Taiwan Republic of China.,R&D Center for Membrane Technology, Chung Yuan Christian University Taoyuan Taiwan Republic of China
| | - Hsieh-Chih Tsai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology Taiwan Republic of China .,Advanced Membrane Materials Center, National Taiwan University of Science and Technology Taiwan Republic of China
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Filipecka K, Miedziński R, Sitarz M, Filipecki J, Makowska-Janusik M. Optical and vibrational properties of phosphorylcholine-based contact lenses-Experimental and theoretical investigations. Spectrochim Acta A Mol Biomol Spectrosc 2017; 176:83-90. [PMID: 28081493 DOI: 10.1016/j.saa.2017.01.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 12/14/2016] [Accepted: 01/04/2017] [Indexed: 06/06/2023]
Abstract
The Raman, MIR and UV-vis spectroscopy have been used to characterize Omafilcon A material constructing the one of the Proclear family contact lenses. The Omafilcon A is hydrogel material composed of 2-hydroxyethyl methacrylate (HEMA) and 2-methacryloyloxyethyl phosphorylcholine (PC) polymers crosslinked with ethyleneglycol dimethacrylate (EGDMA). Vibrational and electronic properties of the Omafilcon A material were also investigated by quantum chemical calculations. Experimentally obtained Raman, MIR and optical spectra were compared to the theoretical ones calculated applying RHF and DFT methodology. The quantum chemical calculations were performed for isolated monomers of lenses compounds as well as for their dimers and trimers to elucidate the effect of Omafilcon A polymerization and the role of an individual components.
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Affiliation(s)
- Katarzyna Filipecka
- Institute of Physics, Faculty of Mathematics and Natural Science, Jan Dlugosz University, Al. Armii Krajowej 13/15, 42-200 Czestochowa, Poland
| | - Rafał Miedziński
- Institute of Physics, Faculty of Mathematics and Natural Science, Jan Dlugosz University, Al. Armii Krajowej 13/15, 42-200 Czestochowa, Poland
| | - Maciej Sitarz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland
| | - Jacek Filipecki
- Institute of Physics, Faculty of Mathematics and Natural Science, Jan Dlugosz University, Al. Armii Krajowej 13/15, 42-200 Czestochowa, Poland
| | - Małgorzata Makowska-Janusik
- Institute of Physics, Faculty of Mathematics and Natural Science, Jan Dlugosz University, Al. Armii Krajowej 13/15, 42-200 Czestochowa, Poland.
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Huang Z, Chen X, Chen Y, Chen J, Dou M, Feng S, Zeng H, Chen R. Raman spectroscopic characterization and differentiation of seminal plasma. J Biomed Opt 2011; 16:110501. [PMID: 22112099 DOI: 10.1117/1.3650310] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Raman spectroscopy (RS) was applied for the analysis of seminal plasma in order to detect spectral parameters, which might be used for differentiating the normal and abnormal semen samples. Raman spectra of seminal plasma separated from normal and abnormal semen samples, showed a distinct difference in peak ratios between 1449 and 1418 cm(-1) (P < 0.05). More efficient alternative method of using principal component analysis-linear discriminate analysis based on Raman spectroscopic data yielded a diagnostic sensitivity of 73% and specificity of 82%. The results suggest that RS combined with the multivariate analysis method has the potential for differentiating semen samples by examination of the corresponding seminal plasma.
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Sikirzhytski V, Virkler K, Lednev IK. Discriminant analysis of Raman spectra for body fluid identification for forensic purposes. Sensors (Basel) 2010; 10:2869-84. [PMID: 22319277 PMCID: PMC3274205 DOI: 10.3390/s100402869] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Revised: 03/13/2010] [Accepted: 03/23/2010] [Indexed: 11/16/2022]
Abstract
Detection and identification of blood, semen and saliva stains, the most common body fluids encountered at a crime scene, are very important aspects of forensic science today. This study targets the development of a nondestructive, confirmatory method for body fluid identification based on Raman spectroscopy coupled with advanced statistical analysis. Dry traces of blood, semen and saliva obtained from multiple donors were probed using a confocal Raman microscope with a 785-nm excitation wavelength under controlled laboratory conditions. Results demonstrated the capability of Raman spectroscopy to identify an unknown substance to be semen, blood or saliva with high confidence.
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Affiliation(s)
| | | | - Igor K. Lednev
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-518-591-8863
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Virkler K, Lednev IK. Raman spectroscopic signature of semen and its potential application to forensic body fluid identification. Forensic Sci Int 2009; 193:56-62. [PMID: 19850425 DOI: 10.1016/j.forsciint.2009.09.005] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Revised: 09/09/2009] [Accepted: 09/10/2009] [Indexed: 10/20/2022]
Abstract
A great potential of Raman spectroscopy for non-destructive, confirmatory identification of body fluids at the crime scene has been reported recently (Virkler and Lednev, Forensic Sci. Int. 2008). However, that analysis was carried out on only one sample of each body fluid and did not take into account any variations that might occur between different donors of the same fluid. This paper reports on the role of heterogeneity within a sample as well as among multiple donors for human semen. Near-infrared (NIR) Raman spectroscopy was used to measure spectra of pure dried human semen samples from multiple donors in a controlled laboratory environment. The major chemical components that contributed to the Raman spectrum of semen were determined and used to tentatively identify the principal spectral components. The issue of potential spectral variations that could arise between different donors of semen was also addressed. Advanced statistical analysis of spectra obtained from multiple spots on dry samples showed that dry semen is heterogeneous and its Raman spectra could be presented as a linear combination of a fluorescent background and three spectral components. The relative contribution of each of the three components varies with donor, so no single spectrum could effectively represent an experimental Raman spectrum of dry semen in a quantitative way. The combination of the three spectral components could be considered to be a spectroscopic signature for semen. This proof-of-concept approach shows the potential for Raman spectroscopy to identify an unknown substance to be semen during forensic analysis.
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Affiliation(s)
- Kelly Virkler
- Department of Chemistry, University at Albany, SUNY, 1400 Washington Avenue, Albany, NY 12222, USA
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Taddei P, Balducci F, Simoni R, Monti P. Raman, IR and thermal study of a new highly biocompatible phosphorylcholine-based contact lens. J Mol Struct 2005; 744-747:507-14. [DOI: 10.1016/j.molstruc.2004.10.118] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Jain TK, Maitra A. Chain conformation of aerosol OT in water-in-oil microemulsions as studied by laser Raman spectroscopy. ACTA ACUST UNITED AC 1989; 36:87-95. [DOI: 10.1016/0166-6622(89)80098-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
The interaction of lysozyme with mixed 1,2-dipalmitoyl-L-phosphatidic acid/1,2-dimyristoyl-L-phosphatidylcholine liposomes was investigated by laser Raman spectroscopy. Substantial changes were observed i the spectra of both the lipid and protein in the mixed liposomes over the range 10-62 degrees C. At temperatures below 27 degrees C, interaction with lipid appears to slightly increase the amount of helical structure in lysozyme at the expense of random conformation. At temperatures above 30 degrees C, considerable beta-sheet is irreversibly formed. Onset of beta-formation appears to coincide with the formation of disordered lipid side-chains in the acidic component of the lipid. At all temperatures, the O-P-O diester stretching mode at 782 cm-1 is much more intense in the lipid/protein mixture than in lipid alone. It is observed that the dimyristoyl phosphatidylcholine chain-disorder transition is lowered by 3 degrees C, while that of the phosphatidic acid is lowered by 12 degrees C, yet the post-transition conformation contains a significantly higher proportion of trans-segments in the presence of lysozyme. These results are interpreted in terms of: (1) a polar interaction between acidic phospholipid and lysozyme at temperatures below either chain-disorder transition, in which lysozyme is essentially excluded from the hydrophobic portion of the lipid and (2) an interaction at higher temperatures which involves the lipid side-chains of dipalmitoyl phosphatidic acid in the disordered state and is manifested by a substantial conformational change.
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Abstract
Raman spectra are obtained for the multilayer dispersion of rac-1,2,dioctadec-9'-cis-enyl-glycero-3-phosphorylcholine (dietherlecithin) in excess water. The CH stretching region was studied as a function of temperature and indicates that the multilayer dispersions undergo a liquid crystal to the gel phase transition at--21 +/- 4 degrees C.
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Cameron DG, Mantsch HH. The phase transition of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine as seen by Fourier transform infrared difference spectroscopy. Biochem Biophys Res Commun 1978; 83:886-92. [PMID: 581348 DOI: 10.1016/0006-291x(78)91478-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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