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Berlinger SA, Chen X, Yutkin M, Radke CJ. A Two-Phase Model for Adsorption from Solution Using Quartz Crystal Microbalance with Dissipation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10114-10127. [PMID: 35952658 DOI: 10.1021/acs.langmuir.2c00998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Quartz crystal microbalance with dissipation (QCM-D) conveniently monitors mass and mechanical property changes of thin films on solid substrates with exquisite resolution. QCM-D is frequently used to measure dissolved solute/sol adsorption isotherms and kinetics. Unfortunately, currently available methodologies to interpret QCM-D data treat the adlayer as a homogeneous medium, which does not adequately describe solution-adsorption physics. Tethering of the adsorbate to the solid surface is not explicitly recognized, and the liquid solvent is included in the adsorbate mass, which is especially in error for low coverages. Consequently, the areal mass of adsorbate (i.e., solute adsorption) is overestimated. Further, friction is not considered between the bound adsorbate and the free solvent flowing in the adlayer. To overcome these deficiencies, we develop a two-phase (2P) continuum model that self-consistently determines adsorbate and liquid-solvent contributions and includes friction between the attached adsorbate and flowing liquid solvent. We then compare the proposed 2P model to those of Sauerbrey for a rigid adlayer and Voinova et al. for a viscoelastic-liquid adlayer. Effects of 2P-adlayer properties are examined on QCM-D-measured frequency and dissipation shifts, including adsorbate volume fraction and elasticity, adlayer thickness, and overtone number, thereby guiding data interpretation. We demonstrate that distinguishing between adsorbate adsorption and homogeneous-film adsorption is critical; failing to do so leads to incorrect adlayer mass and physical properties.
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Affiliation(s)
- Sarah A Berlinger
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720 United States
| | - Xunkai Chen
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720 United States
| | - Maxim Yutkin
- Energy Resources and Petroleum Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900 Saudi Arabia
| | - Clayton J Radke
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720 United States
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Chen Z, Zhou T, Hu J, Duan H. Quartz Crystal Microbalance with Dissipation Monitoring of Dynamic Viscoelastic Changes of Tobacco BY-2 Cells under Different Osmotic Conditions. BIOSENSORS 2021; 11:136. [PMID: 33925584 PMCID: PMC8145959 DOI: 10.3390/bios11050136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 01/03/2023]
Abstract
The plant cell mechanics, including turgor pressure and wall mechanical properties, not only determine the growth of plant cells, but also reflect the functional and structural changes of plant cells under biotic and abiotic stresses. However, there are currently no appropriate techniques allowing to monitor the complex mechanical properties of living plant cells non-invasively and continuously. In this work, quartz crystal microbalance with dissipation (QCM-D) monitoring technique with overtones (3-9) was used for the dynamic monitoring of adhesions of living tobacco BY-2 cells onto positively charged N,N-dimethyl-N-propenyl-2-propen-1-aminiumchloride homopolymer (PDADMAC)/SiO2 QCM crystals under different concentrations of mannitol (CM) and the subsequent effects of osmotic stresses. The cell viscoelastic index (CVIn) (CVIn = ΔD⋅n/ΔF) was used to characterize the viscoelastic properties of BY-2 cells under different osmotic conditions. Our results indicated that lower overtones of QCM could detect both the cell wall and cytoskeleton structures allowing the detection of plasmolysis phenomena; whereas higher overtones could only detect the cell wall's mechanical properties. The QCM results were further discussed with the morphological changes of the BY-2 cells by an optical microscopy. The dynamic changes of cell's generated forces or cellular structures of plant cells caused by external stimuli (or stresses) can be traced by non-destructive and dynamic monitoring of cells' viscoelasticity, which provides a new way for the characterization and study of plant cells. QCM-D could map viscoelastic properties of different cellular structures in living cells and could be used as a new tool to test the mechanical properties of plant cells.
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Affiliation(s)
- Zongxing Chen
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.C.); (J.H.); (H.D.)
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, China
| | - Tiean Zhou
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.C.); (J.H.); (H.D.)
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, China
| | - Jiajin Hu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.C.); (J.H.); (H.D.)
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, China
| | - Haifeng Duan
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; (Z.C.); (J.H.); (H.D.)
- Hunan Provincial Engineering Technology Research Center for Cell Mechanics and Function Analysis, Changsha 410128, China
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3
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Reducing anionic surfactant adsorption using polyacrylate as sacrificial agent investigated by QCM-D. J Colloid Interface Sci 2021; 585:1-11. [DOI: 10.1016/j.jcis.2020.11.090] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 11/15/2020] [Accepted: 11/23/2020] [Indexed: 11/21/2022]
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4
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Fan X, Xu H, Zhao F, Song J, Jin Y, Zhang C, Wu G. Lipid-mimicking peptide decorates erythrocyte membrane for active delivery to engrafted MDA-MB-231 breast tumour. Eur J Pharm Biopharm 2020; 152:72-84. [PMID: 32376370 DOI: 10.1016/j.ejpb.2020.04.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 04/21/2020] [Accepted: 04/29/2020] [Indexed: 01/04/2023]
Abstract
Decorating the membrane surface of vesicle carriers with proteins for targeted delivery has been achieved mainly by chemical methods. In this study, we report the rational design of a lipid-mimicking peptide for biomembrane decoration without chemical conjugation. A peptide Pm45 consisting of a hydrophobic helical tail and an anionic headgroup linked with an integrin-targeting RGD moiety was manually designed. Pm45 was synthesized and characterized, which confirmed an alpha-helix at the C-terminal. Pm45 spontaneously intercalated into the lipid bilayer as illustrated by quartz crystal of microbalance with dissipation (QCM-D), a calcein leakage assay, and TEM. The intercalation was accomplished within 10 min, and the ITC results indicated that the affinity of Pm45 binding with lipids was ~100-fold greater than that of the naturally occurring cell-penetrating peptide Ib-AMP4. In vitro cellular experiments indicated that the Pm45-decorated erythrocyte vesicles specifically bound and killed integrin αvβ3-expressing MDA-MB-231 breast cancer cells. The targeting potential of Pm45-decorated erythrocyte vesicles was further evaluated in an MDA-MB-231 xenograft nude mouse model. The in vivo therapeutic effects indicated that the targeting vesicles significantly improved the therapeutic effect of encapsulated doxorubicin (DOX) compared with that of DOX or non-targeting vesicles. NIRF imaging implied that the targeting vesicles improved the pharmacokinetics of DOX in vivo and concentrated DOX in the tumour tissue at levels >50% higher than those achieved by non-targeting liposomes. This study reports a new method for liposome decoration as an alternative to chemical conjugation.
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Affiliation(s)
- Xiaobo Fan
- Diagnostics Department, Medical School, Southeast University, China
| | - Hongbo Xu
- Diagnostics Department, Medical School, Southeast University, China
| | - Fengfeng Zhao
- Center for Clinical Laboratory Medicine of Zhongda Hospital, Southeast University, China
| | - Junlong Song
- Jiangsu Provincial Key Laboratory of Pulp and Paper Science & Technology, Nanjing Forestry University, China
| | - Yongcan Jin
- Jiangsu Provincial Key Laboratory of Pulp and Paper Science & Technology, Nanjing Forestry University, China
| | - Chen Zhang
- Center for Clinical Laboratory Medicine of Zhongda Hospital, Southeast University, China
| | - Guoqiu Wu
- Center for Clinical Laboratory Medicine of Zhongda Hospital, Southeast University, China.
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Fan X, Xu H, Song J, Jin Y, Wink M, Wu G. Using a Membrane-Penetrating-Peptide to Anchor Ligands in the Liposome Membrane Facilitates Targeted Drug Delivery. Bioconjug Chem 2019; 31:113-122. [PMID: 31841319 DOI: 10.1021/acs.bioconjchem.9b00798] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Antimicrobial peptides (AMPs) are typical cell penetrating peptides (CPPs) that intercalate into biomembranes and exhibit broad activities. We designed a triple fusion protein consisting of an AMP, Ib-AMP4 at the N-terminus, a fluorescent GFP probe in the center, and the tumor-targeting peptide P1c at the other terminus. After purification from E. coli, the interaction between the Ib-AMP4-GFP-P1c fusion protein (IGP) and the lipid membrane was characterized. Experiments using isothermal titration calorimetry (ITC) and quartz crystal microbalance with dissipation (QCM-D) demonstrated that IGP proteins spontaneously bound the lipid bilayer with a maximal molar ratio of 1:52 (protein:lipid). Furthermore, transmission electron microscopy (TEM) confirmed that the IGP protein was present in the liposome membrane. After decoration with IGP proteins, the DOPC:DOPG liposomes were applied to cancer cells. Microscopy and flow cytometry reveal that the decorated liposomes selectively bound integrin αvβ3-positive A549 cells. In addition, compared with the common chemical conjugation method, the reported method seemed to be superior in certain aspects, such as simple sample preparation and cost-effectiveness. Next, the IGP protein was applied to decorate red blood cell (RBC) liposomes for targeted delivery in both in vitro and in vivo applications. The IGP-decorated RBC liposomes preferentially targeted integrin αvβ3 expressing A549 cancer cells. The in vivo imaging showed that IGP-decorated RBC liposomes were concentrated in tumor tissue and were primarily metabolized by the liver and kidney.
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Affiliation(s)
- Xiaobo Fan
- Diagnostics Department, Medical School , Southeast University , Nanjing 21009 , China
| | - Hongbo Xu
- Diagnostics Department, Medical School , Southeast University , Nanjing 21009 , China
| | - Junlong Song
- Jiangsu Provincial Key Laboratory of Pulp and Paper Science & Technology , Nanjing Forestry University , Nanjing 210009 , China
| | - Yongcan Jin
- Jiangsu Provincial Key Laboratory of Pulp and Paper Science & Technology , Nanjing Forestry University , Nanjing 210009 , China
| | - Michael Wink
- Institute of Pharmacy and Molecular Biology , Heidelberg University , Heidelberg 69120 , Germany
| | - Guoqiu Wu
- Center for Clinical Laboratory Medicine of Zhongda Hospital , Southeast University , Nanjing 21009 , China
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Zhang M, Wiener CG, Sepulveda-Medina PI, Douglas JF, Vogt BD. Influence of Sodium Salts on the Swelling and Rheology of Hydrophobically Cross-linked Hydrogels Determined by QCM-D. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:16612-16623. [PMID: 31747520 DOI: 10.1021/acs.langmuir.9b03063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hydrophobically modified copolymers provide a versatile platform of hydrogel materials for diverse applications, but the influence of salts on the swelling and material properties of this class of hydrogels has not been extensively studied. Here, we investigate model hydrogels with three different sodium salts with anions chosen from the classic Hofmeister series to determine how these counterions influence the swelling and mechanical properties of neutral hydrogels. The gel chosen was based on a statistical copolymer of dimethylacrylamide and 2-(N-ethylperfluorooctane sulfonamido) ethyl acrylate (FOSA). Our measurements utilize a quartz crystal microbalance with dissipation (QCM-D) to quantify both swelling and rheological properties of these gels. We find that a 1 mol/L solution of Na2SO4, corresponding to a kosmotropic anion, leads to nearly a 2.6-fold gel deswelling and correspondingly, the complex modulus increases by an order of magnitude under these solution conditions. In contrast, an initial increase in swelling and then a swelling maximum is observed for a 0.02 mol/L concentration in the case of a chaotropic anion, NaClO4, but the changes in the degree of gel swelling in this system are not directly correlated with changes in the gel shear modulus. The addition of NaBr, an anion salt closer to the middle of the chaotropic to kosmotropic range, leads to hydrogel deswelling where the degree of deswelling and the shear modulus are both nearly independent of salt concentration. Overall, the observed trends are broadly consistent with more kosmotropic ions causing diminished solubility ("salting out") and strongly chaotropic ions causing improved solubility ("salting in"), a trend characteristic of the Hoffmeister series governing the solubility of many proteins and synthetic water-soluble polymers, but trends in the shear stiffness with gel swelling are clearly different from those normally observed in chemically cross-linked gels and are correspondingly difficult to interpret. The salt specificity of swelling and mechanical properties of nonionic hydrogels is important for any potential application in which a wide range of salt concentrations and types are encountered.
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Affiliation(s)
- Mengxue Zhang
- Department of Polymer Engineering , University of Akron , Akron , Ohio 44325 United States
| | - Clinton G Wiener
- Department of Polymer Engineering , University of Akron , Akron , Ohio 44325 United States
| | | | - Jack F Douglas
- Materials Science and Engineering Division , National Institute of Standards and Technology , Gaithersburg , Maryland 20899 United States
| | - Bryan D Vogt
- Department of Chemical Engineering , The Pennsylvania State University , University Park , Pennsylvania 16802 United States
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7
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Fan X, Xu W, Han J, Jiang X, Wink M, Wu G. Antimicrobial peptide hybrid fluorescent protein based sensor array discriminate ten most frequent clinic isolates. Biochim Biophys Acta Gen Subj 2019; 1863:1158-1166. [DOI: 10.1016/j.bbagen.2019.04.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 03/14/2019] [Accepted: 04/10/2019] [Indexed: 01/30/2023]
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8
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Ib-AMP4 insertion causes surface rearrangement in the phospholipid bilayer of biomembranes: Implications from quartz-crystal microbalance with dissipation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:617-623. [DOI: 10.1016/j.bbamem.2017.10.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 10/24/2017] [Accepted: 10/25/2017] [Indexed: 11/16/2022]
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Ye C, Takigawa T, Burtovvy OS, Langsdorf L, Jablonski D, Bell A, Vogt BD. Impact of Nanostructure on Mechanical Properties of Norbornene-based Block Copolymers under Simulated Operating Conditions for Biobutanol Membranes. ACS APPLIED MATERIALS & INTERFACES 2015; 7:11765-11774. [PMID: 25984992 DOI: 10.1021/acsami.5b02692] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The structure and mechanical properties of a novel block copolymer (BCP) system with T(g)'s for both segments exceeding 300 °C, poly(butylnorbornene)-block-poly(hydroxyhexafluoroisopropyl norbornene) (BuNB-b-HFANB), are investigated as a function of processing conditions used for solvent vapor annealing (SVA). Solvent selection impacts long-range order markedly, but unexpectedly vertical orientation of cylinders are preferred over a wide range of solubility parameters, as determined by atomic force microscopy and grazing incidence small-angle X-ray scattering. The mechanical properties (elastic modulus, fracture strength, and onset fracture strain) are dependent upon the long-range order induced during SVA and determined using the combination of surface wrinkling and cracking. The modulus and fracture strength of the films increase from 1.44 GPa and 12.1 MPa to 1.77 GPa and 17.5 MPa, respectively, whereas the onset fracture strain decreases from 1.6% to approximately 0.6% as the ordering is improved. The polarity difference in the segments of the BCP is attractive for membrane separations, especially butanol-water. For biobutanol recovery, the titers are typically <3 wt % butanol; exposure of the BCP membrane to aqueous 1 wt % butanol decreases the elastic modulus to approximately 0.90 GPa, irrespective of the morphology, despite the high T(g) of both segments and limited swelling (5.0 wt %). Correspondingly, the onset fracture strain of these swollen films is estimated to increase significantly to 6-7%. These results indicate that operating conditions impact the mechanical performance of BCP membranes more than their morphology despite the high T(g) of the neat copolymer. Wrinkling and cracking provide a facile route to test the mechanical properties of membranes under simulated operando conditions.
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Affiliation(s)
- Changhuai Ye
- †Department of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
| | - Tamami Takigawa
- ‡Promerus, LLC, 9921 Brecksville Road, Brecksville, Ohio 44107, United States
| | | | - Leah Langsdorf
- ‡Promerus, LLC, 9921 Brecksville Road, Brecksville, Ohio 44107, United States
| | - Dane Jablonski
- ‡Promerus, LLC, 9921 Brecksville Road, Brecksville, Ohio 44107, United States
| | - Andrew Bell
- ‡Promerus, LLC, 9921 Brecksville Road, Brecksville, Ohio 44107, United States
| | - Bryan D Vogt
- †Department of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
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10
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Wu M, Vanhoutte G, Brooks NR, Binnemans K, Fransaer J. Electrodeposition of germanium at elevated temperatures and pressures from ionic liquids. Phys Chem Chem Phys 2015; 17:12080-9. [PMID: 25875112 DOI: 10.1039/c4cp06076h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrodeposition of germanium at elevated temperatures up to 180 °C and pressures was studied from the ionic liquids 1-butyl-1-methylpyrrolidinium dicyanamide and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide containing [GeCl4(BuIm)2] (where BuIm = 1-butylimidazole) or GeCl4. Cyclic voltammetry (CV), electrochemical quartz crystal microbalance (EQCM), rotating ring-disk electrode (RRDE), scanning electron microscope (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), electron backscatter diffraction (EBSD) and Auger electron spectroscopy (AES) were used to investigate the electrochemical behavior and the properties of the electrodeposited germanium. Electrodeposition at elevated temperatures leads to higher deposition rates due to: (1) increase in the diffusion rate of the electroactive germanium compounds; (2) faster electrochemical kinetics in the electrolyte; and (3) higher electrical conductivity of the electrodeposited germanium film. Moreover, the morphology of the germanium film is also of a better quality at higher electrodeposition temperatures due to an increase in adatom mobility.
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Affiliation(s)
- Minxian Wu
- Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44 - bus 2450, B-3001 Leuven, Belgium.
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Ma F, Rehman A, Liu H, Zhang J, Zhu S, Zeng X. Glycosylation of Quinone-Fused Polythiophene for Reagentless and Label-Free Detection of E. coli. Anal Chem 2015; 87:1560-8. [DOI: 10.1021/ac502712q] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Fen Ma
- Department
of Chemistry, Oakland University, Rochester, Michigan 48309, United States
| | - Abdul Rehman
- Department
of Chemistry, Oakland University, Rochester, Michigan 48309, United States
| | - Haiying Liu
- Department
of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
| | - Jingtuo Zhang
- Department
of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
| | - Shilei Zhu
- Department
of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
| | - Xiangqun Zeng
- Department
of Chemistry, Oakland University, Rochester, Michigan 48309, United States
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Mohammadi M, Sedighi M, Hashemi Kiasari H, Hosseini SM. Genetic Algorithm Development for Prediction of Modified Langmuir Isotherm Parameters of Asphaltene Adsorption onto Metal Surfaces: Using Novel Quartz Crystal Nanobalance. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2014.903806] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hashemi Kiasari H, Rabbani AR, Mousavi Dehghani SA, Qobadi A. Modeling Asphaltene Deposition Rate on to Inner Surface of Oil Production Wells (Stainless Steel) Using Novel Quartz Crystal Nanobalance Experiments. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2014.880845] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Hashemi Kiasari H, Rabbani AR, Mousavi Dehghani SA, Qobadi A. Modeling Asphaltene/Surface Interaction Effect on the Asphaltene Deposition Rate by Using Novel Quartz Crystal Nanobalance Experiments. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2013.879534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Martin EJ, Pourzal R, Mathew MT, Shull KR. Dominant role of molybdenum in the electrochemical deposition of biological macromolecules on metallic surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4813-4822. [PMID: 23550942 PMCID: PMC4067157 DOI: 10.1021/la304046q] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 03/13/2013] [Indexed: 06/02/2023]
Abstract
The corrosion of CoCrMo, an alloy frequently used in orthopedic implants, was studied with an electrochemical quartz crystal microbalance (QCM) in three physiologically relevant solutions. Mass changes were measured during potentiodynamic tests, showing material deposition in protein solutions at potential levels that caused mass loss when the proteins were not present. X-ray photoelectron spectroscopy (XPS) data indicated that the deposited material was primarily organic and therefore was most likely derived from proteins in the electrolyte. Material deposition consistently occurred at a critical potential and was not dependent on the current density or total charge released into solution. Corrosion studies on pure Co, Cr, and Mo in protein solutions found material deposition only on Mo. We hypothesize that organic deposition results from the interaction of Mo(VI) with proteins in the surrounding solution. The organic layer is reminiscent of tribochemical reaction layers that form on the surface of CoCrMo hip bearings, suggesting that these types of layers can be formed by purely electrochemical means.
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Affiliation(s)
- Elizabeth J Martin
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
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16
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Becker B, Cooper MA. A survey of the 2006-2009 quartz crystal microbalance biosensor literature. J Mol Recognit 2011; 24:754-87. [DOI: 10.1002/jmr.1117] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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17
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Quartz crystal microbalance with dissipation monitoring of supported lipid bilayers on various substrates. Nat Protoc 2010; 5:1096-106. [PMID: 20539285 DOI: 10.1038/nprot.2010.65] [Citation(s) in RCA: 386] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Supported lipid bilayers (SLBs) mimic biological membranes and are a versatile platform for a wide range of biophysical research fields including lipid-protein interactions, protein-protein interactions and membrane-based biosensors. The quartz crystal microbalance with dissipation monitoring (QCM-D) has had a pivotal role in understanding SLB formation on various substrates. As shown by its real-time kinetic monitoring of SLB formation, QCM-D can probe the dynamics of biomacromolecular interactions. We present a protocol for constructing zwitterionic SLBs supported on silicon oxide and titanium oxide, and discuss technical issues that need to be considered when working with charged lipid compositions. Furthermore, we explain a recently developed strategy that uses an amphipathic, alpha-helical (AH) peptide to form SLBs on gold and titanium oxide substrates. The protocols can be completed in less than 3 h.
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Furusawa H, Ozeki T, Morita M, Okahata Y. Added Mass Effect on Immobilizations of Proteins on a 27 MHz Quartz Crystal Microbalance in Aqueous Solution. Anal Chem 2009; 81:2268-73. [DOI: 10.1021/ac802412t] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroyuki Furusawa
- Department of Biomolecular Engineering, Tokyo Institute of Technology and SENTAN, JST, 4259 Nagatsuda, Midori-ku, Yokohama 226-8501, Japan, and Department of Biotechnology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Tomomitsu Ozeki
- Department of Biomolecular Engineering, Tokyo Institute of Technology and SENTAN, JST, 4259 Nagatsuda, Midori-ku, Yokohama 226-8501, Japan, and Department of Biotechnology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Mizuki Morita
- Department of Biomolecular Engineering, Tokyo Institute of Technology and SENTAN, JST, 4259 Nagatsuda, Midori-ku, Yokohama 226-8501, Japan, and Department of Biotechnology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Yoshio Okahata
- Department of Biomolecular Engineering, Tokyo Institute of Technology and SENTAN, JST, 4259 Nagatsuda, Midori-ku, Yokohama 226-8501, Japan, and Department of Biotechnology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
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19
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Zhang XH. Quartz crystal microbalance study of the interfacial nanobubbles. Phys Chem Chem Phys 2008; 10:6842-8. [DOI: 10.1039/b810587a] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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