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Lebègue E, Smida H, Flinois T, Vié V, Lagrost C, Barrière F. An optimal surface concentration of pure cardiolipin deposited onto glassy carbon electrode promoting the direct electron transfer of cytochrome-c. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.12.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Alvarez-Paggi D, Hannibal L, Castro MA, Oviedo-Rouco S, Demicheli V, Tórtora V, Tomasina F, Radi R, Murgida DH. Multifunctional Cytochrome c: Learning New Tricks from an Old Dog. Chem Rev 2017; 117:13382-13460. [DOI: 10.1021/acs.chemrev.7b00257] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Damián Alvarez-Paggi
- Departamento
de Química Inorgánica, Analítica y Química
Física and INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, Buenos Aires C1428EHA, Argentina
| | - Luciana Hannibal
- Department
of Pediatrics, Universitätsklinikum Freiburg, Mathildenstrasse 1, Freiburg 79106, Germany
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - María A. Castro
- Departamento
de Química Inorgánica, Analítica y Química
Física and INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, Buenos Aires C1428EHA, Argentina
| | - Santiago Oviedo-Rouco
- Departamento
de Química Inorgánica, Analítica y Química
Física and INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, Buenos Aires C1428EHA, Argentina
| | - Veronica Demicheli
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - Veronica Tórtora
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - Florencia Tomasina
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - Rafael Radi
- Departamento
de Bioquímica and Center for Free Radical and Biomedical Research,
Facultad de Medicina, Universidad de la República, Av.
Gral. Flores 2125, Montevideo 11800, Uruguay
| | - Daniel H. Murgida
- Departamento
de Química Inorgánica, Analítica y Química
Física and INQUIMAE (CONICET-UBA), Facultad de Ciencias Exactas
y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, piso 1, Buenos Aires C1428EHA, Argentina
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Brulé T, Bouhelier A, Dereux A, Finot E. Discrimination between Single Protein Conformations Using Dynamic SERS. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00097] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Thibault Brulé
- Laboratoire Interdisciplinaire
Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université de Bourgogne Franche-Comté, F-21078 Dijon, France
| | - Alexandre Bouhelier
- Laboratoire Interdisciplinaire
Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université de Bourgogne Franche-Comté, F-21078 Dijon, France
| | - Alain Dereux
- Laboratoire Interdisciplinaire
Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université de Bourgogne Franche-Comté, F-21078 Dijon, France
| | - Eric Finot
- Laboratoire Interdisciplinaire
Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université de Bourgogne Franche-Comté, F-21078 Dijon, France
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Papagiannopoulos A, Christoulaki A, Spiliopoulos N, Vradis A, Toprakcioglu C, Pispas S. Complexation of lysozyme with adsorbed PtBS-b-SCPI block polyelectrolyte micelles on silver surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:685-694. [PMID: 25525817 DOI: 10.1021/la504873h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We present a study of the interaction of the positively charged model protein lysozyme with the negatively charged amphiphilic diblock polyelectrolyte micelles of poly(tert-butylstyrene-b-sodium (sulfamate/carboxylate)isoprene) (PtBS-b-SCPI) on the silver/water interface. The adsorption kinetics are monitored by surface plasmon resonance, and the surface morphology is probed by atomic force microscopy. The micellar adsorption is described by stretched-exponential kinetics, and the micellar layer morphology shows that the micelles do not lose their integrity upon adsorption. The complexation of lysozyme with the adsorbed micellar layers depends on the micelles arrangement and density in the underlying layer, and lysozyme follows the local morphology of the underlying roughness. When the micellar adsorbed amount is small, the layers show low capacity in protein complexation and low resistance in loading. When the micellar adsorbed amount is high, the situation is reversed. The adsorbed layers both with or without added protein are found to be irreversibly adsorbed on the Ag surface.
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Affiliation(s)
- Aristeidis Papagiannopoulos
- Theoretical and Physical Chemistry Institute , National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
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Díaz A, González ML, Pérez RJ, David A, Mukherjee A, Báez A, Clearfield A, Colón JL. Direct intercalation of cisplatin into zirconium phosphate nanoplatelets for potential cancer nanotherapy. NANOSCALE 2013; 5:11456-11463. [PMID: 24072038 PMCID: PMC4140787 DOI: 10.1039/c3nr02206d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report the use of zirconium phosphate (ZrP) nanoplatelets for the encapsulation of the anticancer drug cisplatin and its delivery to tumor cells. Cisplatin was intercalated into ZrP by direct ion exchange and was tested in vitro for cytotoxicity in the human breast cancer (MCF-7) cell line. The structural characterization of the intercalated cisplatin in ZrP suggests that during the intercalation process, the chloride ligands of the cisplatin complex were substituted by phosphate groups within the layers. Consequently, a new phosphate phase with the platinum complex directly bound to ZrP (cisPt@ZrP) is produced with an interlayer distance of 9.3 Å. The in vitro release profile of the intercalated drug upon a pH stimulus shows that at low pH under lysosomal conditions the platinum complex is released with simultaneous hydrolysis of the zirconium phosphate material, while at higher pH the complex is not released. Experiments with the MCF-7 cell line show that cisPt@ZrP reduced the cell viability up to 40%. The cisPt@ZrP intercalation product is envisioned as a future nanotherapy agent against cancer. Taking advantage of the shape and sizes of the ZrP particles and controlled release of the drug at low pH, it is intended to exploit the enhanced permeability and retention effect of tumors, as well as their intrinsic acidity, for the destruction of malignant cells.
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Affiliation(s)
- Agustín Díaz
- Department of Chemistry, University of Puerto Rico, PO Box 23346, Río Piedras, PR 00931-3346, USA. Tel: (1) 787 764-0000 xt. 3220;
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, TX 77842-3012, USA. Tel: (1) 979 845-2936;
| | - Millie L. González
- Departments of Pharmacology and Otolaryngology, School of Medicine, University of Puerto Rico, PO Box 365067, San Juan, PR 00936-5067, USA. Tel: (1) 787 758-2525 xt 1366;
| | - Riviam J. Pérez
- Department of Chemistry, University of Puerto Rico, PO Box 23346, Río Piedras, PR 00931-3346, USA. Tel: (1) 787 764-0000 xt. 3220;
| | - Amanda David
- Department of Chemistry, University of Puerto Rico, PO Box 23346, Río Piedras, PR 00931-3346, USA. Tel: (1) 787 764-0000 xt. 3220;
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, TX 77842-3012, USA. Tel: (1) 979 845-2936;
| | - Atashi Mukherjee
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, TX 77842-3012, USA. Tel: (1) 979 845-2936;
| | - Adriana Báez
- Departments of Pharmacology and Otolaryngology, School of Medicine, University of Puerto Rico, PO Box 365067, San Juan, PR 00936-5067, USA. Tel: (1) 787 758-2525 xt 1366;
| | - Abraham Clearfield
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, TX 77842-3012, USA. Tel: (1) 979 845-2936;
| | - Jorge L. Colón
- Department of Chemistry, University of Puerto Rico, PO Box 23346, Río Piedras, PR 00931-3346, USA. Tel: (1) 787 764-0000 xt. 3220;
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Rusling JF, Kumar CV, Gutkind JS, Patel V. Measurement of biomarker proteins for point-of-care early detection and monitoring of cancer. Analyst 2010; 135:2496-511. [PMID: 20614087 DOI: 10.1039/c0an00204f] [Citation(s) in RCA: 355] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This critical review evaluates progress toward viable point-of-care protein biomarker measurements for cancer detection and diagnostics. The ability to measure panels of specific, selective cancer biomarker proteins in physicians' surgeries and clinics has the potential to revolutionize cancer detection, monitoring, and therapy. The dream envisions reliable, cheap, automated, technically undemanding devices that can analyze a patient's serum or saliva in a clinical setting, allowing on-the-spot diagnosis. Existing commercial products for protein assays are reliable in laboratory settings, but have limitations for point-of-care applications. A number of ultrasensitive immunosensors and some arrays have been developed, many based on nanotechnology. Multilabel detection coupled with high capture molecule density in immunosensors and arrays seems to be capable of detecting a wide range of protein concentrations with sensitivity ranging into the sub pg mL(-1) level. Multilabel arrays can be designed to detect both high and ultralow abundance proteins in the same sample. However, only a few of the newer ultrasensitive methods have been evaluated with real patient samples, which is key to establishing clinical sensitivity and selectivity.
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Affiliation(s)
- James F Rusling
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, USA.
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Ferrari E, Darios F, Zhang F, Niranjan D, Bailes J, Soloviev M, Davletov B. Binary polypeptide system for permanent and oriented protein immobilization. J Nanobiotechnology 2010; 8:9. [PMID: 20462407 PMCID: PMC2885309 DOI: 10.1186/1477-3155-8-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Accepted: 05/12/2010] [Indexed: 11/25/2022] Open
Abstract
Background Many techniques in molecular biology, clinical diagnostics and biotechnology rely on binary affinity tags. The existing tags are based on either small molecules (e.g., biotin/streptavidin or glutathione/GST) or peptide tags (FLAG, Myc, HA, Strep-tag and His-tag). Among these, the biotin-streptavidin system is most popular due to the nearly irreversible interaction of biotin with the tetrameric protein, streptavidin. The major drawback of the stable biotin-streptavidin system, however, is that neither of the two tags can be added to a protein of interest via recombinant means (except for the Strep-tag case) leading to the requirement for chemical coupling. Results Here we report a new immobilization system which utilizes two monomeric polypeptides which self-assemble to produce non-covalent yet nearly irreversible complex which is stable in strong detergents, chaotropic agents, as well as in acids and alkali. Our system is based on the core region of the tetra-helical bundle known as the SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) complex. This irreversible protein attachment system (IPAS) uses either a shortened syntaxin helix and fused SNAP25-synaptobrevin or a fused syntaxin-synaptobrevin and SNAP25 allowing a two-component system suitable for recombinant protein tagging, capture and immobilization. We also show that IPAS is suitable for use with traditional beads and chromatography, planar surfaces and Biacore, gold nanoparticles and for protein-protein interaction in solution. Conclusions IPAS offers an alternative to chemical cross-linking, streptavidin-biotin system and to traditional peptide affinity tags and can be used for a wide range of applications in nanotechnology and molecular sciences.
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Affiliation(s)
- Enrico Ferrari
- MRC Laboratory of Molecular Biology, Cambridge, Hills Road, CB2 0QH, UK.
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Current awareness on yeast. Yeast 2009. [DOI: 10.1002/yea.1567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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