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Di Giulio T, Corsi M, Gagliani F, De Benedetto G, Malitesta C, Mazzei A, Barca A, Verri T, Barillaro G, Mazzotta E. Reconfigurable Optical Sensor for Metal-Ion-Mediated Label-Free Recognition of Different Biomolecular Targets. ACS APPLIED MATERIALS & INTERFACES 2024; 16:43752-43761. [PMID: 39106976 PMCID: PMC11345716 DOI: 10.1021/acsami.4c08860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/16/2024] [Accepted: 07/17/2024] [Indexed: 08/09/2024]
Abstract
Reconfiguration of chemical sensors, intended as the capacity of the sensor to adapt to novel operational scenarios, e.g., new target analytes, is potentially game changing and would enable rapid and cost-effective reaction to dynamic changes occurring at healthcare, environmental, and industrial levels. Yet, it is still a challenge, and rare examples of sensor reconfiguration have been reported to date. Here, we report on a reconfigurable label-free optical sensor leveraging the versatile immobilization of metal ions through a chelating agent on a nanostructured porous silica (PSiO2) optical transducer for the detection of different biomolecules. First, we show the reversible grafting of different metal ions on the PSiO2 surface, namely, Ni2+, Cu2+, Zn2+, and Fe3+, which can mediate the interaction with different biomolecules and be switched under mild conditions. Then, we demonstrate reconfiguration of the sensor at two levels: 1) switching of the metal ions on the PSiO2 surface from Cu2+ to Zn2+ and testing the ability of Cu2+-functionalized and Zn2+-reconfigured devices for the sensing of the dipeptide carnosine (CAR), leveraging the well-known chelating ability of CAR toward divalent metal ions; and 2) reconfiguration of the Cu2+-functionalized PSiO2 sensor for a different target analyte, namely, the nucleotide adenosine triphosphate (ATP), switching Cu2+ with Fe3+ ions to exploit the interaction with ATP through phosphate groups. The Cu2+-functionalized and Zn2+-reconfigured sensors show effective sensing performance in CAR detection, also evaluated in tissue samples from murine brain, and so does the Fe3+-reconfigured sensor toward ATP, thus demonstrating effective reconfiguration of the sensor with the proposed surface chemistry.
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Affiliation(s)
- Tiziano Di Giulio
- Laboratorio
di Chimica Analitica, Dipartimento di Scienze e Tecnologie Biologiche
e Ambientali (Di.S.Te.B.A.), Università
del Salento, Via Monteroni, 73100 Lecce, Italy
| | - Martina Corsi
- Dipartimento
di Ingegneria dell’Informazione, Università di Pisa, Via G. Caruso 16, 56122 Pisa, Italy
| | - Francesco Gagliani
- Laboratorio
di Chimica Analitica, Dipartimento di Scienze e Tecnologie Biologiche
e Ambientali (Di.S.Te.B.A.), Università
del Salento, Via Monteroni, 73100 Lecce, Italy
| | - Giuseppe De Benedetto
- Laboratorio
di Spettrometria di Massa Analitica ed Isotopica, Dipartimento di
Beni Culturali, Università del Salento, Via Monteroni, 73100 Lecce, Italy
| | - Cosimino Malitesta
- Laboratorio
di Chimica Analitica, Dipartimento di Scienze e Tecnologie Biologiche
e Ambientali (Di.S.Te.B.A.), Università
del Salento, Via Monteroni, 73100 Lecce, Italy
| | - Aurora Mazzei
- Laboratorio
di Fisiologia Applicata, Dipartimento di Scienze e Tecnologie Biologiche
e Ambientali (Di.S.Te.B.A.), Università
del Salento, Via Monteroni, 73100 Lecce, Italy
| | - Amilcare Barca
- Laboratorio
di Fisiologia Applicata, Dipartimento di Medicina Sperimentale (Di.Me.S), Università del Salento, Via Monteroni, 73100 Lecce, Italy
| | - Tiziano Verri
- Laboratorio
di Fisiologia Applicata, Dipartimento di Scienze e Tecnologie Biologiche
e Ambientali (Di.S.Te.B.A.), Università
del Salento, Via Monteroni, 73100 Lecce, Italy
| | - Giuseppe Barillaro
- Dipartimento
di Ingegneria dell’Informazione, Università di Pisa, Via G. Caruso 16, 56122 Pisa, Italy
| | - Elisabetta Mazzotta
- Laboratorio
di Chimica Analitica, Dipartimento di Scienze e Tecnologie Biologiche
e Ambientali (Di.S.Te.B.A.), Università
del Salento, Via Monteroni, 73100 Lecce, Italy
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Gomes MC, Chen J, Cunha A, Trindade T, Zheng G, Tomé JPC. Complex cellular environments imaged by SERS nanoprobes using sugars as an all-in-one vector. J Mater Chem B 2021; 9:9285-9294. [PMID: 34709285 DOI: 10.1039/d1tb01360b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Raman spectroscopy coupled with confocal microscopy offers an alternative bioimaging technique overcoming limitations associated with sensitivity, tissue penetration and image resolution. Allied to the surface-enhanced Raman scattering (SERS) properties of gold nanoparticles (AuNP), we designed SERS nanoprobes with enhanced properties and straightforward application as bio-labelling agents for gliomas. The ensuing nanoprobes coated with simple sugar units (galactose or glucose) allowed assessing information about their intracellular localization (vesicular structures), with impressive sensitivity towards complex environments and proved the ability to overcome biological auto-fluorescence and high penetration in tissues. We validate the use of sugars as an all-in-one vector (Raman reporter, conferring high stability, biocompatibility and affinity to glioma cells) as imaging agents using an impressive technique.
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Affiliation(s)
- Maria C Gomes
- LAQV-REQUINTE and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.,Princess Margaret Cancer Center, University Health Network, Toronto, ON, Canada.
| | - Juan Chen
- Princess Margaret Cancer Center, University Health Network, Toronto, ON, Canada.
| | - Angela Cunha
- CESAM and Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Tito Trindade
- CICECO-Aveiro Institute of Materials and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Gang Zheng
- Princess Margaret Cancer Center, University Health Network, Toronto, ON, Canada. .,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - João P C Tomé
- LAQV-REQUINTE and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.,CQE and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal.
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3
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Barkhade T, Phatangare A, Dahiwale S, Mahapatra SK, Banerjee I. Nano‐bio interface study between Fecontent TiO2nanoparticles and adenosine triphosphate biomolecules. SURF INTERFACE ANAL 2019. [DOI: 10.1002/sia.6663] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Tejal Barkhade
- School of NanosciencesCentral University of Gujarat Gandhinagar 382030 Gujarat India
| | - Ambadas Phatangare
- Department of PhysicsSavitribai Phule Pune University Pune 411007 Maharashtra India
| | - Shailendra Dahiwale
- Department of PhysicsSavitribai Phule Pune University Pune 411007 Maharashtra India
| | | | - Indrani Banerjee
- School of NanosciencesCentral University of Gujarat Gandhinagar 382030 Gujarat India
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4
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Suga K, Tanaka S, Umakoshi H. Liposome membrane can induce self-cleavage of RNA that models the core fragments of hammerhead ribozyme. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2015; 45:55-62. [PMID: 26385703 DOI: 10.1007/s00249-015-1076-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 08/18/2015] [Indexed: 10/23/2022]
Abstract
The hammerhead ribozyme (HHR) is one of smallest catalytic RNAs, composed of a catalytic core and three stems; it undergoes self-cleavage in the presence of divalent magnesium ions (Mg(2+)) or other cations. It is hypothesized that the function and metabolism of RNAs might be regulated via interaction with lipid membranes in the prebiotic world. Using synthetic RNAs that model the core fragment of hammerhead ribozyme-like assembly (HHR-a), we investigated the enhancement of the self-cleavage reaction of HHR-a induced by the liposomes, both in the absence and presence of Mg(2+). The HHR-a activity was enhanced by 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE)/1,2-dioleoyl-sn-glycero-3-phosphocholine (DPPC) = 8/2 liposome with Mg(2+), while other liposomes did not so significant. In the presence of DOPE/DPPC = 8/2 liposome, the HHR-a activity was observed without Mg(2+), revealed by the conformational change of the HHR inhibitor complex induced by the interaction with the liposome. The UV resonance Raman spectroscopy analysis investigated the interaction between lipid molecules and nucleobases, suggesting that the ethanolamine group of DOPE molecules are assumed to act as monovalent cations alternative to Mg(2+), depending on the liposome membrane characteristics.
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Affiliation(s)
- Keishi Suga
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka, 560-8531, Japan
| | - Seishiro Tanaka
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka, 560-8531, Japan
| | - Hiroshi Umakoshi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka, 560-8531, Japan.
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Sikora A, Maciejewska AM, Poznański J, Pilżys T, Marcinkowski M, Dylewska M, Piwowarski J, Jakubczak W, Pawlak K, Grzesiuk E. Effects of changes in intracellular iron pool on AlkB-dependent and AlkB-independent mechanisms protecting E.coli cells against mutagenic action of alkylating agent. Mutat Res 2015; 778:52-60. [PMID: 26114961 DOI: 10.1016/j.mrfmmm.2015.05.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 04/30/2015] [Accepted: 05/21/2015] [Indexed: 11/29/2022]
Abstract
An Escherichia coli hemH mutant accumulates protoporphyrin IX, causing photosensitivity of cells to visible light. Here, we have shown that intracellular free iron in hemH mutants is double that observed in hemH(+) strain. The aim of this study was to recognize the influence of this increased free iron concentration on AlkB-directed repair of alkylated DNA by analyzing survival and argE3 → Arg(+) reversion induction after λ>320 nm light irradiation and MMS-treatment in E. coli AB1157 hemH and alkB mutants. E.coli AlkB dioxygenase constitutes a direct single-protein repair system using non-hem Fe(II) and cofactors 2-oxoglutarate (2OG) and oxygen (O2) to initiate oxidative dealkylation of DNA/RNA bases. We have established that the frequency of MMS-induced Arg(+) revertants in AB1157 alkB(+)hemH(-)/pMW1 strain was 40 and 26% reduced comparing to the alkB(+)hemH(-) and alkB(+)hemH(+)/pMW1, respectively. It is noteworthy that the effect was observed only when bacteria were irradiated with λ>320 nm light prior MMS-treatment. This finding indicates efficient repair of alkylated DNA in photosensibilized cells in the presence of higher free iron pool and AlkB concentrations. Interestingly, a 31% decrease in the level of Arg(+) reversion was observed in irradiated and MMS-treated hemH(-)alkB(-) cells comparing to the hemH(+)alkB(-) strain. Also, the level of Arg(+) revertants in the irradiated and MMS treated hemH(-) alkB(-) mutant was significantly lower (by 34%) in comparison to the same strain but MMS-treated only. These indicate AlkB-independent repair involving Fe ions and reactive oxygen species. According to our hypothesis it may be caused by non-enzymatic dealkylation of alkylated dNTPs in E. coli cells. In in vitro studies, the absence of AlkB protein in the presence of iron ions allowed etheno(ϵ) dATP and ϵdCTP to spontaneously convert to dAMP and dCMP, respectively. Thus, hemH(-) intra-cellular conditions may favor Fe-dependent dealkylation of modified dNTPs.
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Affiliation(s)
- Anna Sikora
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | | | - Jarosław Poznański
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Tomasz Pilżys
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Michał Marcinkowski
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Małgorzata Dylewska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Jan Piwowarski
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Wioletta Jakubczak
- Department of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Warsaw, Poland
| | - Katarzyna Pawlak
- Department of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Warsaw, Poland
| | - Elżbieta Grzesiuk
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland.
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Bhaumik A, Shearin AM, Delong R, Wanekaya A, Ghosh K. Probing the Interaction at the Nano-Bio Interface Using Raman Spectroscopy: ZnO Nanoparticles and Adenosine Triphosphate Biomolecules. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2014; 118:18631-18639. [PMID: 25152799 PMCID: PMC4136666 DOI: 10.1021/jp506200a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 07/17/2014] [Indexed: 06/03/2023]
Abstract
With the advent of nanobiotechnology, there will be an increase in the interaction between engineered nanomaterials and biomolecules. Nanoconjugates with cells, organelles, and intracellular structures containing DNA, RNA, and proteins establish sequences of nano-bio boundaries that depend on several intricate complex biophysicochemical reactions. Given the complexity of these interactions, and their import in governing life at the molecular level, it is extremely important to begin to understand such nanoparticle-biomaterial association. Here we report a unique method of probing the kinematics between an energy biomolecule, adenosine triphosphate (ATP), and hydrothermally synthesized ZnO nanostructures using micro Raman spectroscopy, X-ray diffraction, and electron microscopy experiments. For the first time we have shown by Raman spectroscopy analysis that the ZnO nanostructures interact strongly with the nitrogen (N7) atom in the adenine ring of the ATP biomolecule. Raman spectroscopy also confirms the importance of nucleotide base NH2 group hydrogen bonding with water molecules and phosphate group ionization and their pH dependence. Calculation of molecular bond force constants from Raman spectroscopy reinforces our experimental data. These data present convincing evidence of pH-dependent interactions between ATP and zinc oxide nanomaterials. Significantly, Raman spectroscopy is able to probe such difficult to study and subtle nano-bio interactions and may be applied to elegantly elucidate the nano-bio interface more generally.
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Affiliation(s)
- A. Bhaumik
- Department
of Physics, Astronomy and Materials Science, Department of Biomedical
Science, and Department of Chemistry, Missouri State
University, Springfield, Missouri 65897, United
States
| | - A. M. Shearin
- Department
of Physics, Astronomy and Materials Science, Department of Biomedical
Science, and Department of Chemistry, Missouri State
University, Springfield, Missouri 65897, United
States
| | - R. Delong
- Department
of Physics, Astronomy and Materials Science, Department of Biomedical
Science, and Department of Chemistry, Missouri State
University, Springfield, Missouri 65897, United
States
| | - A. Wanekaya
- Department
of Physics, Astronomy and Materials Science, Department of Biomedical
Science, and Department of Chemistry, Missouri State
University, Springfield, Missouri 65897, United
States
| | - K. Ghosh
- Department
of Physics, Astronomy and Materials Science, Department of Biomedical
Science, and Department of Chemistry, Missouri State
University, Springfield, Missouri 65897, United
States
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7
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Mostapha S, Fontaine-Vive F, Berthon L, Boubals N, Zorz N, Solari PL, Charbonnel MC, Den Auwer C. On the structure of thorium and americium adenosine triphosphate complexes. Int J Radiat Biol 2014; 90:966-74. [PMID: 24499480 DOI: 10.3109/09553002.2014.886795] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE The actinides are chemical poisons and radiological hazards. One challenge to better appraise their toxicity and develop countermeasures in case of exposure of living organisms is to better assess pathways of contamination. Because of the high chemical affinity of those actinide elements for phosphate groups and the ubiquity of such chemical functions in biochemistry, nucleotides and in particular adenosine triphosphate nucleotide (ATP) may be considered critical target building blocks for actinides. MATERIALS AND METHODS Combinations of spectroscopic techniques (Fourier transformed Infra Red [FTIR], Electrospray Ionization Mass Spectrometry [ESI-MS], and Extended X-ray Absorption Fine Structure [EXAFS]) with quantum chemical calculations have been implemented in order to assess the actinides coordination arrangement with ATP. RESULTS We describe and compare herein the interaction of ATP with thorium and americium; thorium(IV) as a representative of actinide(IV) like plutonium(IV) and americium(III) as a representative of all heavier actinides. In the case of thorium, an insoluble complex is readily formed. In the case of americium, a behavior identical to that described previously for lutetium has been observed with insoluble and soluble complexes. CONCLUSIONS The comparative study of ATP complexation with Th(IV) and Am(III) shows their ability to form insoluble complexes for which a structural model has been proposed by analogy with previously described Lu(III) complexes.
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Affiliation(s)
- Sarah Mostapha
- Commissariat à l'Energie Atomique et aux Energies Alternatives, Marcoule, Nuclear Energy Division, Radiochemistry and Processes Department , 30207 Bagnols sur Cèze
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Hui-Bon-Hoa G, Kaddour H, Vergne J, Kruglik SG, Maurel MC. Raman characterization of Avocado Sunblotch viroid and its response to external perturbations and self-cleavage. BMC BIOPHYSICS 2014; 7:2. [PMID: 24655924 PMCID: PMC3994434 DOI: 10.1186/2046-1682-7-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 02/10/2014] [Indexed: 11/24/2022]
Abstract
Background Viroids are the smallest pathogens of plants. To date the structural and conformational details of the cleavage of Avocado sunblotch viroid (ASBVd) and the catalytic role of Mg2+ ions in efficient self-cleavage are of crucial interest. Results We report the first Raman characterization of the structure and activity of ASBVd, for plus and minus viroid strands. Both strands exhibit a typical A-type RNA conformation with an ordered double-helical content and a C3′-endo/anti sugar pucker configuration, although small but specific differences are found in the sugar puckering and base-stacking regions. The ASBVd(-) is shown to self-cleave 3.5 times more actively than ASBVd(+). Deuteration and temperature increase perturb differently the double-helical content and the phosphodiester conformation, as revealed by corresponding characteristic Raman spectral changes. Our data suggest that the structure rigidity and stability are higher and the D2O accessibility to H-bonding network is lower for ASBVd(+) than for ASBVd(-). Remarkably, the Mg2+-activated self-cleavage of the viroid does not induce any significant alterations of the secondary viroid structure, as evidenced from the absence of intensity changes of Raman marker bands that, however exhibit small but noticeable frequency downshifts suggesting several minor changes in phosphodioxy, internal loops and hairpins of the cleaved viroids. Conclusions Our results demonstrate the sensitivity of Raman spectroscopy in monitoring structural and conformational changes of the viroid and constitute the basis for further studies of its interactions with therapeutic agents and cell membranes.
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Affiliation(s)
- Gaston Hui-Bon-Hoa
- Unité 779, INSERM, 78 rue du Général Leclerc, 94276 Le Kremlin Bicêtre, France.
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Chuchuen O, Henderson MH, Sykes C, Kim MS, Kashuba ADM, Katz DF. Quantitative analysis of microbicide concentrations in fluids, gels and tissues using confocal Raman spectroscopy. PLoS One 2013; 8:e85124. [PMID: 24386455 PMCID: PMC3875564 DOI: 10.1371/journal.pone.0085124] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 11/22/2013] [Indexed: 01/03/2023] Open
Abstract
Topical vaginal anti-HIV microbicides are an important focus in female-based strategies to prevent the sexual transmission of HIV. Understanding microbicide pharmacokinetics is essential to development, characterization and implementation of efficacious microbicide drug delivery formulations. Current methods to measure drug concentrations in tissue (e.g., LC-MS/MS, liquid chromatography coupled with tandem mass spectrometry) are highly sensitive, but destructive and complex. This project explored the use of confocal Raman spectroscopy to detect microbicide drugs and to measure their local concentrations in fluids, drug delivery gels, and tissues. We evaluated three candidate microbicide drugs: tenofovir, Dapivirine and IQP-0528. Measurements were performed in freshly excised porcine buccal tissue specimens, gel vehicles and fluids using two Horiba Raman microscopes, one of which is confocal. Characteristic spectral peak calibrations for each drug were obtained using serial dilutions in the three matrices. These specific Raman bands demonstrated strong linear concentration dependences in the matrices and were characterized with respect to their unique vibrational signatures. At least one specific Raman feature was identified for each drug as a marker band for detection in tissue. Sensitivity of detection was evaluated in the three matrices. A specific peak was also identified for tenofovir diphosphate, the anti-HIV bioactive product of tenofovir after phosphorylation in host cells. Z-scans of drug concentrations vs. depth in excised tissue specimens, incubated under layers of tenofovir solution in a Transwell assay, showed decreasing concentration with depth from the surface into the tissue. Time-dependent concentration profiles were obtained from tissue samples incubated in the Transwell assay, for times ranging 30 minutes - 6 hours. Calibrations and measurements from tissue permeation studies for tenofovir showed good correlation with gold standard LC-MS/MS data. These results demonstrate that confocal Raman spectroscopy holds promise as a tool for practical, minimally invasive, label-free measurement of microbicide drug concentrations in fluids, gels and tissues.
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Affiliation(s)
- Oranat Chuchuen
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, United States of America
| | - Marcus H. Henderson
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, United States of America
| | - Craig Sykes
- University of North Carolina Eshelman School of Pharmacy and University of North Carolina Center for AIDS Research, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Min Sung Kim
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, United States of America
| | - Angela D. M. Kashuba
- University of North Carolina Eshelman School of Pharmacy and University of North Carolina Center for AIDS Research, University of North Carolina, Chapel Hill, North Carolina, United States of America
- Department of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, North Carolina, United States of America
| | - David F. Katz
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, United States of America
- Department of Obstetrics and Gynecology, Duke University, Durham, North Carolina, United States of America
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10
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Zhou JY, Lu GX. Recognition and catalytic hydrolysis of adenosine 5′-triphosphate by cadmium(II) and L-glutamic acid. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.608162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Jin-Ying Zhou
- a State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou , Gansu 730000 , China
- b Graduate University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Gong-Xuan Lu
- a State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou , Gansu 730000 , China
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11
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Kneipp J, Kneipp H, McLaughlin M, Brown D, Kneipp K. In vivo molecular probing of cellular compartments with gold nanoparticles and nanoaggregates. NANO LETTERS 2006; 6:2225-31. [PMID: 17034088 DOI: 10.1021/nl061517x] [Citation(s) in RCA: 293] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Surface-enhanced Raman (SERS) signatures were measured from single living cells at different times after the uptake of gold nanoparticles. The spectra are indicative of chemical changes in the environment of the nanostructures over time. The increase of the SERS signal strength and parallel TEM studies indicate the formation of nanoaggregates providing optimum SERS enhancement for ultrasensitive probing inside the endosomal compartment. The results have implications for medical and biotechnology applications of SERS nanosensors in cells.
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Affiliation(s)
- Janina Kneipp
- Wellman Center for Photomedicine, Harvard University, Medical School, Boston, Massachusetts 02114, USA.
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12
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Complexation of curium(III) by adenosine 5′-triphosphate (ATP): A time-resolved laser-induced fluorescence spectroscopy (TRLFS) study. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.12.055] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Richter Y, Fischer B. Characterization and elucidation of coordination requirements of adenine nucleotides complexes with Fe(II) ions. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2004; 22:1757-80. [PMID: 14533880 DOI: 10.1081/ncn-120023271] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In spite of the significant role of iron ions-nucleotide complexes in living cells, these complexes have been studied only to a limited extent. Therefore, we fully characterized the ATP:Fe(II) complex including stoichiometry, geometry, stability constants, and dependence of Fe(II)-coordination on pH. A 1:1 stoichiometry was established for the ATP:Fe(II) complex based on volumetric titrations, UV and SEM/EDX measurements. The coordination sites of ferrous ions in the complex with ATP, established by 1H-, 31P-, and 15N-NMR, involve the adenine N7 as well as P(alpha), P(beta), and P(gamma). Coordination sites remain the same within the pH range of 3.1-8.3. By applying fluorescence monitored Fe(II)-titration, we established a logK value of 5.13 for the Fe(ATP)2- complex, and 2.31 for the Fe(HATP)-complex. Ferrous complexes of ADP3- and AMP2- were less stable (log K 4.43 and 1.68, respectively). The proposed major structure for the Fe(ATP)2- complex is the 'open' structure. In the minor 'closed' structure N7 nitrogen is probably coordinated with Fe(II) through a bridging water molecule. The electronic and stereochemical requirements for Fe(II)-coordination with ATP4- were probed using a series of modified-phosphate or modified-adenine ATP analogues. We concluded that: Fe(II) coordinates solely with the phosphate-oxygen atom, and not with sulfur, amine, or borane in the cases of phosphate-modified analogues of ATP; a high electron density on N7 and an anti conformation of the adenine-nucleotide are required for enhanced stability of ATP analogues:Fe(II) complexes as compared to ATP complexes (up to more than 100-fold); there are no stereochemical preferences for Fe(II)-coordination with either Rp or Sp isomers of ATP-alpha-S or ATP-alpha-BH3 analogues.
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Affiliation(s)
- Yael Richter
- Department of Chemistry, Gonda-Goldschmied Medical Research Center, Bar-Ilan University, Ramat-Gan, Israel
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14
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Abstract
The binding site of Fe3+ in the purine base of adenosine 5'-triphosphate (ATP) was studied by nuclear magnetic resonance (NMR). The NMR relaxation rates (R1) of 1H and 31P in ATP solutions free of and containing ferric ions were measured in the pH range of 3-10. It was found that Fe3+ selectively enhanced the relaxation rate of protons. In the presence of Fe3+, the R1 of H2 was much bigger than that of H8 at a lower pH (3-4.5), while at a higher pH (5.5-7.5) the R1 of H8 was more enhanced than H2. At a pH of around 5, both H2 and H8, as well as all three phosphorous, showed a sudden jump in R1. When pH>8, Fe3+ failed to show appreciable enhancement of R1 to all protons and phosphorous. The quantitative data of relaxation rate enhancements suggest that the binding site of Fe3+ in ATP is strongly dependent on pH. At lower pH values, Fe3+ binds N1 but at higher pH it binds to N7. When pH is around 5, the whole purine base donates the aromatic pi-electrons to the ferric ion, forming a ferrocene-like complex, while when pH>8, ATP could not form complexes with Fe3+.
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Affiliation(s)
- F Du
- Laboratory of NMR and Atomic Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, PR China
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15
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Anastassopoulou J, Anifantakis B, Anifantakis ZA, Dovas A, Theophanides T. The role of free radical reactions with haemoglobin and thalassaemia. J Inorg Biochem 2000; 79:327-9. [PMID: 10830884 DOI: 10.1016/s0162-0134(99)00247-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
It is well known that all living systems depend on iron to transport (haemoglobin), store (myoglobin) and utilize (cytochromes, cytochrome oxide) oxygen for respiration. Iron is an essential component in the active sites of the enzyme that protects against oxidation, such as the iron superoxide dismutase, in bacteria and plants. In normal human plasma almost all iron loading of transferrin is 20-30% maximum. In this presentation we review and summarize recent developments in our understanding of iron transport and storage in living systems.
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Affiliation(s)
- J Anastassopoulou
- National Technical University of Athens, Chemical Engineering Department, Greece
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16
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Du F, Mao XA, Li DF, Liao ZR. Coordination sites of ATP to FeIII as evidenced by a 1H and 31P NMR relaxation study. Polyhedron 1999. [DOI: 10.1016/s0277-5387(99)00132-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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El-Mahdaoui L, Neault J, Tajmir-Riahi H. Carbohydrate-nucleotide interaction. The effects of mono- and disaccharides on the solution structure of AMP, dAMP, ATP, GMP, dGMP, and GTP studied by FTIR difference spectroscopy. J Inorg Biochem 1997. [DOI: 10.1016/s0162-0134(96)00097-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Lippe G, Polizio F, Di Pancrazio F, Dabbeni-Sala F, Bortolotti N, Desideri A, Mavelli I. Characterization of the binding of Fe(III) to F1ATPase from bovine heart mitochondria. FEBS Lett 1996; 379:231-5. [PMID: 8603695 DOI: 10.1016/0014-5793(95)01517-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The binding Fe(III) to F1ATPase purified from beef heart mitochondria has been characterized by chemical analyses and EPR spectroscopy. F1ATPase binds 2 mol of Fe(III)/mol of protein selectively in the presence of saturating concentrations of ATP. In the absence of nucleotides or in the presence of either saturating ADP or limiting ATP concentrations, the enzyme binds 1 equivalent of Fe(III). F1ATPase pretreated with 5'-p- fluorosulfonylbenzoyladenosine, that selectively modifies the non-catalytic sites, binds only 1 mol of Fe(III)/mol of protein in the presence of either saturating ATP or ADP, Fe(III)-loaded F1ATPase containing either 1 or 2 equivalents of Fe(III) show identical EPR signals at g=4.3. The signals are not perturbed by the binding of nucleotides to the enzyme while they are altered by phosphate addition. These results indicate that F1ATPase contains two distinct Fe(III)-binding sites, which differ from nucleotide-binding sites, and that one of these sites is opened up for Fe(III) uptake by conformational changes induced by binding of ATP to the loose non-catalytic site.
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Affiliation(s)
- G Lippe
- Department of Biomedical Sciences and Technologies, University of Udine, Italy
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19
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el-Mahdaoui L, Tajmir-Riahi HA. A comparative study of ATP and GTP complexation with trivalent Al, Ga and Fe cations. Determination of cation binding site and nucleotide conformation by FTIR difference spectroscopy. J Biomol Struct Dyn 1995; 13:69-86. [PMID: 8527032 DOI: 10.1080/07391102.1995.10508822] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The interactions of adenosine-5'-triphosphate (Na2H2ATP) and guanosine-5'-triphosphate (Na2H2GTP) with trivalent Al, Ga and Fe cations are investigated in aqueous solution at pH = 6-7 with metal/nucleotide ratios (r) 1/10, 1/2, 1 and 4. Fourier Transform infrared (FTIR) difference spectroscopy is used to characterize the nature of metal cation binding and nucleotide conformational variations, in aqueous solution. Spectroscopic evidences show that at low cation concentration (r = 1/10), metal binding is mainly through the -PO2- and -PO3(2-) groups of the nucleotide moiety (outer-sphere), while at r > 1/10, in addition to direct metal-phosphate binding (chelation), minor metal-base complexes are also formed via indirect metal-NH2 or metal-carbonyl interaction (through H2O). At r = 1, metal macrochelate formation occurs, involving direct cation coordination to phosphate groups and imidazol N-7 atom with an indirect metal-NH2 or metal-carbonyl interaction. At r = 4, polymerization of these metal complexes is observed through nucleotide phosphate chain. The amount of cation/phosphate binding is considerably larger than that of metal/base binding. Evidence for metal-phosphate coordination comes from major spectral changes (shifting and intensity variations) of the alpha-, beta- and gamma-PO2- vibrations in the region 1250-900 cm-1, while metal-base binding is characterized by spectral alterations of the bands at 1700 (guanine carbonyl stretch), 1695 (adenine N-1-H+ mode), 1650-1660 (NH2 bending), 1610-1613 (pyrimidine), 1575 (pyrimidine), 1535-1540 (imidazol), 1470-1480 (imidazol) and 1377 cm-1 (imidazol). The ribose moiety shows C2'-endo/anti conformation for the free ATP and its metal-ATP complexes with an infrared marked band at 821 cm-1. A mixture of both C2'-endo/anti and C3'-endo/anti conformations are occurring for the free GTP and its trivalent metal-complexes with marker bands at 820 and 800 cm-1.
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Affiliation(s)
- L el-Mahdaoui
- Photobiophysics Research Center, Université du Québec à Trois-Rivières, Canada
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20
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Ferrali M, Signorini C, Ciccoli L, Comporti M. Iron released from an erythrocyte lysate by oxidative stress is diffusible and in redox active form. FEBS Lett 1993; 319:40-4. [PMID: 8454059 DOI: 10.1016/0014-5793(93)80033-q] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The incubation of a ghost-free erythrocyte lysate with the oxidizing agent phenylhydrazine resulted in both methemoglobin formation and release of iron in a desferrioxamine (DFO)-chelatable form. The released iron was diffusible, as shown by a dialysis carried out simultaneously with the incubation. When the dialysate was added to erythrocyte ghosts or to microsomes from liver or brain, lipid peroxidation developed in the membranes, indicating that the diffusible iron was in a redox active form. The addition of ATP to the lysate markedly increased both iron diffusion and lipid peroxidation in the membranes subsequently added to the dialysate. The possible implication of these data in some well known pathologies is discussed.
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Affiliation(s)
- M Ferrali
- Istituto di Patologia Generale, Università di Siena, Italy
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