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Daniello V, De Leo V, Lasalvia M, Hossain MN, Carbone A, Catucci L, Zefferino R, Ingrosso C, Conese M, Di Gioia S. Solanum lycopersicum (Tomato)-Derived Nanovesicles Accelerate Wound Healing by Eliciting the Migration of Keratinocytes and Fibroblasts. Int J Mol Sci 2024; 25:2452. [PMID: 38473700 DOI: 10.3390/ijms25052452] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/11/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
Plant-derived nanovesicles have been considered interesting in medicine for their breakthrough biological effects, including those relevant to wound healing. However, tomato-derived nanovesicles (TDNVs) have not been studied for their effects on wound closure yet. TDNVs were isolated from Solanum lycopersicum (var. Piccadilly) ripe tomatoes by ultracentrifugation. Extract (collected during the isolation procedure) and NVs (pellet) were characterized by transmission electron microscopy and laser Doppler electrophoresis. Wound healing in the presence of Extract or NVs was analyzed by a scratch assay with monocultures of human keratinocytes (HUKE) or NIH-3T3 mouse fibroblasts. Cell proliferation and migration were studied by MTT and agarose spot assay, respectively. The vesicles in the Extract and NV samples were nanosized with a similar mean diameter of 115 nm and 130 nm, respectively. Both Extract and NVs had already accelerated wound closure of injured HUKE and NIH-3T3 monocultures by 6 h post-injury. Although neither sample exerted a cytotoxic effect on HUKE and NIH-3T3 fibroblasts, they did not augment cell proliferation. NVs and the Extract increased cell migration of both cell types. NVs from tomatoes may accelerate wound healing by increasing keratinocyte and fibroblast migration. These results indicate the potential therapeutic usefulness of TDNVs in the treatment of chronic or hard-to-heal ulcers.
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Affiliation(s)
- Valeria Daniello
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 121, 71122 Foggia, Italy
| | - Vincenzo De Leo
- Department of Chemistry, University of Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - Maria Lasalvia
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 121, 71122 Foggia, Italy
| | - Md Niamat Hossain
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 121, 71122 Foggia, Italy
| | - Annalucia Carbone
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 121, 71122 Foggia, Italy
| | - Lucia Catucci
- Department of Chemistry, University of Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - Roberto Zefferino
- Department of Medical and Surgical Sciences, University of Foggia, Via Napoli 121, 71122 Foggia, Italy
| | - Chiara Ingrosso
- Institute for Chemical and Physical Processes of National Research Council (CNR-IPCF), S.S. Bari, c/o Department of Chemistry, University of Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - Massimo Conese
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 121, 71122 Foggia, Italy
| | - Sante Di Gioia
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli 121, 71122 Foggia, Italy
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De Leo V, Maurelli AM, Giotta L, Daniello V, Di Gioia S, Conese M, Ingrosso C, Ciriaco F, Catucci L. Polymer Encapsulated Liposomes for Oral Co-Delivery of Curcumin and Hydroxytyrosol. Int J Mol Sci 2023; 24:ijms24010790. [PMID: 36614233 PMCID: PMC9821336 DOI: 10.3390/ijms24010790] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/21/2022] [Accepted: 12/27/2022] [Indexed: 01/05/2023] Open
Abstract
Curcumin (Cur) is a hydrophobic polyphenol from the rhizome of Curcuma spp., while hydroxytyrosol (HT) is a water-soluble polyphenol from Olea europaea. Both show outstanding antioxidant properties but suffer from scarce bioavailability and low stability in biological fluids. In this work, the co-encapsulation of Cur and HT into liposomes was realized, and the liposomal formulation was improved using polymers to increase their survival in the gastrointestinal tract. Liposomes with different compositions were formulated: Type 1, composed of phospholipids and cholesterol; Type 2, also with a PEG coating; and Type 3 providing an additional shell of Eudragit® S100, a gastro-resistant polymer. Samples were characterized in terms of size, morphology, ζ-potential, encapsulation efficiency, and loading capacity. All samples were subjected to a simulated in vitro digestion and their stability was investigated. The Eudragit®S100 coating demonstrated prevention of early releases of HT in the mouth and gastric phases, while the PEG shell reduced bile salts and pancreatin effects during the intestinal digestion. In vitro antioxidant activity showed a cumulative effect for Cur and HT loaded in vesicles. Finally, liposomes with HT concentrations up to 40 μM and Cur up to 4.7 μM, alone or in combination, did not show cytotoxicity against Caco-2 cells.
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Affiliation(s)
- Vincenzo De Leo
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
- Correspondence: (V.D.L.); (L.C.)
| | - Anna Maria Maurelli
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Livia Giotta
- Department of Biological and Environmental Sciences and Technologies, University of Salento, S.P. Lecce-Monteroni, 73100 Lecce, Italy
| | - Valeria Daniello
- Department of Medical and Surgical Sciences, University of Foggia, Viale L. Pinto 1, 71122 Foggia, Italy
| | - Sante Di Gioia
- Department of Medical and Surgical Sciences, University of Foggia, Viale L. Pinto 1, 71122 Foggia, Italy
| | - Massimo Conese
- Department of Medical and Surgical Sciences, University of Foggia, Viale L. Pinto 1, 71122 Foggia, Italy
| | - Chiara Ingrosso
- CNR-IPCF S.S. Bari, c/o Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Fulvio Ciriaco
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Lucia Catucci
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
- Correspondence: (V.D.L.); (L.C.)
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Hossain MN, De Leo V, Tamborra R, Laselva O, Ingrosso C, Daniello V, Catucci L, Losito I, Sollitto F, Loizzi D, Conese M, Di Gioia S. Characterization of anti-proliferative and anti-oxidant effects of nano-sized vesicles from Brassica oleracea L. (Broccoli). Sci Rep 2022; 12:14362. [PMID: 35999223 PMCID: PMC9399156 DOI: 10.1038/s41598-022-17899-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/04/2022] [Accepted: 08/02/2022] [Indexed: 11/25/2022] Open
Abstract
In this in vitro study, we test our hypothesis that Broccoli-derived vesicles (BDVs), combining the anti-oxidant properties of their components and the advantages of their structure, can influence the metabolic activity of different cancer cell lines. BDVs were isolated from homogenized fresh broccoli (Brassica oleracea L.) using a sucrose gradient ultracentrifugation method and were characterized in terms of physical properties, such as particle size, morphology, and surface charge by transmission electron microscopy (TEM) and laser doppler electrophoresis (LDE). Glucosinolates content was assessed by RPLC–ESI–MS analysis. Three different human cancer cell lines (colorectal adenocarcinoma Caco-2, lung adenocarcinoma NCI-H441 and neuroblastoma SHSY5Y) were evaluated for metabolic activity by the MTT assay, uptake by fluorescence and confocal microscopy, and anti-oxidant activity by a fluorimetric assay detecting intracellular reactive oxygen species (ROS). Three bands were obtained with average size measured by TEM based size distribution analysis of 52 nm (Band 1), 70 nm (Band 2), and 82 nm (Band 3). Glucobrassicin, glucoraphanin and neoglucobrassicin were found mostly concentrated in Band 1. BDVs affected the metabolic activity of different cancer cell lines in a dose dependent manner compared with untreated cells. Overall, Band 2 and 3 were more toxic than Band 1 irrespective of the cell lines. BDVs were taken up by cells in a dose- and time-dependent manner. Pre-incubation of cells with BDVs resulted in a significant decrease in ROS production in Caco-2 and NCI-H441 stimulated with hydrogen peroxide and SHSY5Y treated with 6-hydroxydopamine, with all three Bands. Our findings open to the possibility to find a novel “green” approach for cancer treatment, focused on using vesicles from broccoli, although a more in-depth characterization of bioactive molecules is warranted.
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Affiliation(s)
- Md Niamat Hossain
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | | | - Rosanna Tamborra
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Onofrio Laselva
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Chiara Ingrosso
- National Research Council of Italy-Institute for Physical and Chemical Processes (CNR-IPCF S.S. Bari), c/o Department of Chemistry, University of Bari "A. Moro", Bari, Italy
| | - Valeria Daniello
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Lucia Catucci
- Department of Chemistry, University of Bari, Bari, Italy
| | - Ilario Losito
- Department of Chemistry, University of Bari, Bari, Italy
| | - Francesco Sollitto
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Domenico Loizzi
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy.
| | - Massimo Conese
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy.
| | - Sante Di Gioia
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
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Lacedonia D, Scioscia G, Soccio P, Conese M, Catucci L, Palladino GP, Simone F, Quarato CMI, Di Gioia S, Rana R, Sollitto F, Foschino-Barbaro MP. Downregulation of exosomal let-7d and miR-16 in idiopathic pulmonary fibrosis. BMC Pulm Med 2021; 21:188. [PMID: 34088304 PMCID: PMC8176704 DOI: 10.1186/s12890-021-01550-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 05/24/2021] [Indexed: 01/04/2023] Open
Abstract
Background Idiopathic Pulmonary Fibrosis (IPF) is a degenerative interstitial lung disease with both a poor prognosis and quality of life once the diagnosis is made. In the last decade many features of the disease have been investigated to better understand the pathological steps that lead to the onset of the disease and, moreover, different types of biomarkers have been tested to find valid diagnostic, prognostic and therapy response predictive ones. In the complexity of IPF, microRNA (miRNAs) biomarker investigation seems to be promising. Methods We analysed the expression of five exosomal miRNAs supposed to have a role in the pathogenesis of the disease from serum of a group of IPF patients (n = 61) and we compared it with the expression of the same miRNAs in a group of healthy controls (n = 15). Results In the current study what emerged is let-7d down-regulation and, unexpectedly, miR-16 significant down-regulation. Moreover, through a cross-sectional analysis, a clustering of the expression of miR-16, miR-21 and miR-26a was found. Conclusions These findings could help the individuation of previously unknown key players in the pathophysiology of IPF and, most interestingly, more specific targets for the development of effective medications. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-021-01550-2.
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Affiliation(s)
- Donato Lacedonia
- Department of Medical and Surgical Sciences, University of Foggia, 71122, Foggia, Italy. .,Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, 71122, Foggia, Italy.
| | - Giulia Scioscia
- Department of Medical and Surgical Sciences, University of Foggia, 71122, Foggia, Italy.,Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, 71122, Foggia, Italy
| | - Piera Soccio
- Department of Medical and Surgical Sciences, University of Foggia, 71122, Foggia, Italy.,Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, 71122, Foggia, Italy
| | - Massimo Conese
- Department of Medical and Surgical Sciences, University of Foggia, 71122, Foggia, Italy
| | - Lucia Catucci
- Department of Chemistry, University "Aldo Moro" of Bari, 70126, Bari, Italy
| | - Grazia P Palladino
- Medical Genetics, Department of Laboratory Diagnostics, Policlinico Riuniti of Foggia, 71122, Foggia, Italy
| | - Filomena Simone
- Department of Medical and Surgical Sciences, University of Foggia, 71122, Foggia, Italy
| | - Carla M I Quarato
- Department of Medical and Surgical Sciences, University of Foggia, 71122, Foggia, Italy
| | - Sante Di Gioia
- Department of Medical and Surgical Sciences, University of Foggia, 71122, Foggia, Italy
| | - Roberto Rana
- Department of Medical and Surgical Sciences, University of Foggia, 71122, Foggia, Italy
| | - Francesco Sollitto
- Institute of Thoracic Surgery, University of Foggia, 71122, Foggia, Italy
| | - Maria P Foschino-Barbaro
- Department of Medical and Surgical Sciences, University of Foggia, 71122, Foggia, Italy.,Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, 71122, Foggia, Italy
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De Leo V, Milano F, Agostiano A, Catucci L. Recent Advancements in Polymer/Liposome Assembly for Drug Delivery: From Surface Modifications to Hybrid Vesicles. Polymers (Basel) 2021; 13:1027. [PMID: 33810273 PMCID: PMC8037206 DOI: 10.3390/polym13071027] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 03/18/2021] [Accepted: 03/23/2021] [Indexed: 12/13/2022] Open
Abstract
Liposomes are consolidated and attractive biomimetic nanocarriers widely used in the field of drug delivery. The structural versatility of liposomes has been exploited for the development of various carriers for the topical or systemic delivery of drugs and bioactive molecules, with the possibility of increasing their bioavailability and stability, and modulating and directing their release, while limiting the side effects at the same time. Nevertheless, first-generation vesicles suffer from some limitations including physical instability, short in vivo circulation lifetime, reduced payload, uncontrolled release properties, and low targeting abilities. Therefore, liposome preparation technology soon took advantage of the possibility of improving vesicle performance using both natural and synthetic polymers. Polymers can easily be synthesized in a controlled manner over a wide range of molecular weights and in a low dispersity range. Their properties are widely tunable and therefore allow the low chemical versatility typical of lipids to be overcome. Moreover, depending on their structure, polymers can be used to create a simple covering on the liposome surface or to intercalate in the phospholipid bilayer to give rise to real hybrid structures. This review illustrates the main strategies implemented in the field of polymer/liposome assembly for drug delivery, with a look at the most recent publications without neglecting basic concepts for a simple and complete understanding by the reader.
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Affiliation(s)
- Vincenzo De Leo
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy;
| | - Francesco Milano
- Istituto di Scienze delle Produzioni Alimentari (ISPA), Consiglio Nazionale delle Ricerche (CNR), S.P. Lecce-Monteroni, Ecotekne, 73100 Lecce, Italy;
| | - Angela Agostiano
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy;
| | - Lucia Catucci
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy;
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Ciriaco F, De Leo V, Catucci L, Pascale M, Logrieco AF, DeRosa MC, De Girolamo A. An In-Silico Pipeline for Rapid Screening of DNA Aptamers against Mycotoxins: The Case-Study of Fumonisin B1, Aflatoxin B1 and Ochratoxin A. Polymers (Basel) 2020; 12:E2983. [PMID: 33327526 PMCID: PMC7764985 DOI: 10.3390/polym12122983] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 12/16/2022] Open
Abstract
Aptamers are single-stranded oligonucleotides selected by SELEX (Systematic Evolution of Ligands by EXponential Enrichment) able to discriminate target molecules with high affinity and specificity, even in the case of very closely related structures. Aptamers have been produced for several targets including small molecules like mycotoxins; however, the high affinity for their respective target molecules is a critical requirement. In the last decade, the screening through computational methods of aptamers for their affinity against specific targets has greatly increased and is becoming a commonly used procedure due to its convenience and low costs. This paper describes an in-silico approach for rapid screening of ten ssDNA aptamer sequences against fumonisin B1 (FB1, n = 3), aflatoxin B1 (AFB1, n = 2) and ochratoxin A (OTA, n = 5). Theoretical results were compared with those obtained by testing the same aptamers by fluorescent microscale thermophoresis and by magnetic beads assay for their binding affinity (KD) revealing a good agreement.
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Affiliation(s)
- Fulvio Ciriaco
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy; (V.D.L.); (L.C.)
| | - Vincenzo De Leo
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy; (V.D.L.); (L.C.)
| | - Lucia Catucci
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy; (V.D.L.); (L.C.)
| | - Michelangelo Pascale
- Institute of Sciences of Food Production (ISPA), CNR-National Research Council of Italy, Via G. Amendola 122/O, 70126 Bari, Italy; (M.P.); (A.F.L.)
| | - Antonio F. Logrieco
- Institute of Sciences of Food Production (ISPA), CNR-National Research Council of Italy, Via G. Amendola 122/O, 70126 Bari, Italy; (M.P.); (A.F.L.)
| | - Maria C. DeRosa
- Department of Chemistry, Carleton University, 1125 Colonel by Drive, Ottawa, ON K1S 5B6, Canada;
| | - Annalisa De Girolamo
- Institute of Sciences of Food Production (ISPA), CNR-National Research Council of Italy, Via G. Amendola 122/O, 70126 Bari, Italy; (M.P.); (A.F.L.)
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Ciasca B, Pecorelli I, Lepore L, Paoloni A, Catucci L, Pascale M, Lattanzio VMT. Rapid and reliable detection of glyphosate in pome fruits, berries, pulses and cereals by flow injection - Mass spectrometry. Food Chem 2020; 310:125813. [PMID: 31757486 DOI: 10.1016/j.foodchem.2019.125813] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/30/2019] [Accepted: 10/25/2019] [Indexed: 11/18/2022]
Abstract
A flow injection - mass spectrometry method for rapid glyphosate detection in food commodities was developed and validated. The sample preparation protocol included a simple and rapid extract purification step through polymeric solid phase extraction cartridges followed by addition of isotopically labeled glyphosate to the final test sample. The optimized method was subjected to intra-laboratory validation (spiking range 0.5-100 mg/kg) in chickpeas, grapes and apples, as representatives of three different commodity groups as defined in SANTE/11813/2017 guidelines. Recoveries were in the range 60-111%, repeatability and within laboratory reproducibility were ≤17%.The trueness of the results generated with the developed method was evaluated by analysis of a set of incurred chickpea and wheat samples (glyphosate range 0.5-36 mg/kg) and comparison with the reference method (Quick Polar Pesticides Method), confirming the method fitness-for-purpose of rapid compliance testing.
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Affiliation(s)
- Biancamaria Ciasca
- Institute of Sciences of Food Production, National Research Council of Italy, Via Amendola 122/O, Bari 70126, Italy
| | - Ivan Pecorelli
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati", Via Salvemini 1, Perugia 06126, Italy
| | - Lavinia Lepore
- Department of Chemistry, University "Aldo Moro" of Bari, Via Orabona 4, Bari 70125, Italy
| | - Angela Paoloni
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati", Via Salvemini 1, Perugia 06126, Italy
| | - Lucia Catucci
- Department of Chemistry, University "Aldo Moro" of Bari, Via Orabona 4, Bari 70125, Italy
| | - Michelangelo Pascale
- Institute of Sciences of Food Production, National Research Council of Italy, Via Amendola 122/O, Bari 70126, Italy
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Innamorato V, Longobardi F, Lippolis V, Cortese M, Logrieco AF, Catucci L, Agostiano A, De Girolamo A. Tracing the Geographical Origin of Lentils (Lens culinaris Medik.) by Infrared Spectroscopy and Chemometrics. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1406-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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De Leo V, Milano F, Mancini E, Comparelli R, Giotta L, Nacci A, Longobardi F, Garbetta A, Agostiano A, Catucci L. Encapsulation of Curcumin-Loaded Liposomes for Colonic Drug Delivery in a pH-Responsive Polymer Cluster Using a pH-Driven and Organic Solvent-Free Process. Molecules 2018; 23:E739. [PMID: 29570636 PMCID: PMC6017095 DOI: 10.3390/molecules23040739] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/09/2018] [Accepted: 03/21/2018] [Indexed: 01/08/2023] Open
Abstract
The present study aimed to develop and optimize liposome formulation for the colonic delivery of biologically active compounds. A strategy to facilitate such targeting is to formulate liposomes with a polymer coating sensitive to the pH shifts in the gastrointestinal tract. To this end, liposomes encapsulating curcumin-chosen as the biologically active compound model-and coated with the pH-responsive polymer Eudragit S100 were prepared and characterized. Curcumin was encapsulated into small unilamellar vesicles (SUVs) by the micelle-to-vesicle transition method (MVT) in a simple and organic solvent-free way. Curcumin-loaded liposomes were coated with Eudragit S100 by a fast and easily scalable pH-driven method. The prepared liposomes were evaluated for size, surface morphology, entrapment efficiency, stability, in vitro drug release, and curcumin antioxidant activity. In particular, curcumin-loaded liposomes displayed size lower than 100 nm, encapsulation efficiency of 98%, high stability at both 4 °C and 25 °C, high in vitro antioxidant activity, and a cumulative release that was completed within 200 min. A good Eudragit S100 coating which did not alter the properties of the curcumin-loaded liposomes was obtained. The present work therefore provides a fast and solvent-free method to prepare pH-responsive polymer-coated liposomes for the colonic delivery of biologically active compounds.
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Affiliation(s)
- Vincenzo De Leo
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy.
- CNR-IPCF Institute for Physical and Chemical Processes, Bari unit, Via Orabona 4, 70126 Bari, Italy.
| | - Francesco Milano
- CNR-IPCF Institute for Physical and Chemical Processes, Bari unit, Via Orabona 4, 70126 Bari, Italy.
| | - Erminia Mancini
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy.
| | - Roberto Comparelli
- CNR-IPCF Institute for Physical and Chemical Processes, Bari unit, Via Orabona 4, 70126 Bari, Italy.
| | - Livia Giotta
- Department of Biological and Environmental Sciences and Technologies, University of Salento, SP Lecce-Monteroni, I-73100 Lecce, Italy.
| | - Angelo Nacci
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy.
- CNR-ICCOM Institute of chemistry of organometallic compounds, Bari unit, Via E. Orabona, 4, 70126 Bari, Italy.
| | | | - Antonella Garbetta
- CNR-ISPA Institute of Sciences of Food Production, Via G. Amendola 122/O, 70125 Bari, Italy.
| | - Angela Agostiano
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy.
- CNR-IPCF Institute for Physical and Chemical Processes, Bari unit, Via Orabona 4, 70126 Bari, Italy.
| | - Lucia Catucci
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy.
- CNR-IPCF Institute for Physical and Chemical Processes, Bari unit, Via Orabona 4, 70126 Bari, Italy.
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Fusco C, Casiello M, Catucci L, Comparelli R, Cotugno P, Falcicchio A, Fracassi F, Margiotta V, Moliterni A, Petrone F, D'Accolti L, Nacci A. TiO₂@PEI-Grafted-MWCNTs Hybrids Nanocomposites Catalysts for CO₂ Photoreduction. Materials (Basel) 2018; 11:ma11020307. [PMID: 29461484 PMCID: PMC5849004 DOI: 10.3390/ma11020307] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/13/2018] [Accepted: 02/13/2018] [Indexed: 01/17/2023]
Abstract
Anatase (TiO2) and multiwalled carbon nanotubes bearing polyethylenimine (PEI) anchored on their surface were hybridized in different proportions according to a sol-gel method. The resulting nanocomposites (TiO2@PEI-MWCNTs), characterized by BET, XRD, XPS, SEM, and UV techniques, were found efficient catalysts for CO2 photoreduction into formic and acetic acids in water suspension and under visible light irradiation. PEI-grafted nanotubes co-catalysts are believed to act as CO2 activators by forming a carbamate intermediate allowing to accomplish the first example in the literature of polyamines/nanotubes/TiO2 mediated CO2 photoreduction to carboxylic acids.
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Affiliation(s)
- Caterina Fusco
- ICCOM-CNR (Istituto di Chimica dei Composti OrganoMetallici - Consiglio Nazionale delle Ricerche), SS Bari, Via Orabona 4, 70126 Bari, Italy.
| | - Michele Casiello
- Dipartimento di Chimica, Università di Bari "A. Moro", Via Orabona 4, 70126 Bari, Italy.
| | - Lucia Catucci
- Dipartimento di Chimica, Università di Bari "A. Moro", Via Orabona 4, 70126 Bari, Italy.
| | - Roberto Comparelli
- IPCF-CNR (Istituto per i Processi Chimico Fisici - Consiglio Nazionale delle Ricerche), SS Bari, Via Orabona 4, 70126 Bari, Italy.
| | - Pietro Cotugno
- Dipartimento di Chimica, Università di Bari "A. Moro", Via Orabona 4, 70126 Bari, Italy.
| | - Aurelia Falcicchio
- CNR-IC (Consiglio Nazionale delle Ricerche - Istituto di Cristallografia), Via Amendola 122/O, 70126 Bari, Italy.
| | - Francesco Fracassi
- Dipartimento di Chimica, Università di Bari "A. Moro", Via Orabona 4, 70126 Bari, Italy.
| | - Valerio Margiotta
- IPCF-CNR (Istituto per i Processi Chimico Fisici - Consiglio Nazionale delle Ricerche), SS Bari, Via Orabona 4, 70126 Bari, Italy.
| | - Anna Moliterni
- CNR-IC (Consiglio Nazionale delle Ricerche - Istituto di Cristallografia), Via Amendola 122/O, 70126 Bari, Italy.
| | - Francesca Petrone
- IPCF-CNR (Istituto per i Processi Chimico Fisici - Consiglio Nazionale delle Ricerche), SS Bari, Via Orabona 4, 70126 Bari, Italy.
| | - Lucia D'Accolti
- ICCOM-CNR (Istituto di Chimica dei Composti OrganoMetallici - Consiglio Nazionale delle Ricerche), SS Bari, Via Orabona 4, 70126 Bari, Italy.
- Dipartimento di Chimica, Università di Bari "A. Moro", Via Orabona 4, 70126 Bari, Italy.
| | - Angelo Nacci
- ICCOM-CNR (Istituto di Chimica dei Composti OrganoMetallici - Consiglio Nazionale delle Ricerche), SS Bari, Via Orabona 4, 70126 Bari, Italy.
- Dipartimento di Chimica, Università di Bari "A. Moro", Via Orabona 4, 70126 Bari, Italy.
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Longobardi F, Innamorato V, Di Gioia A, Ventrella A, Lippolis V, Logrieco AF, Catucci L, Agostiano A. Geographical origin discrimination of lentils (Lens culinaris Medik.) using 1H NMR fingerprinting and multivariate statistical analyses. Food Chem 2017; 237:743-748. [DOI: 10.1016/j.foodchem.2017.05.159] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 05/25/2017] [Accepted: 05/31/2017] [Indexed: 11/27/2022]
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12
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De Leo V, Milano F, Paiano A, Bramato R, Giotta L, Comparelli R, Ruscigno S, Agostiano A, Bucci C, Catucci L. Luminescent CdSe@ZnS nanocrystals embedded in liposomes: a cytotoxicity study in HeLa cells. Toxicol Res (Camb) 2017; 6:947-957. [PMID: 30090555 PMCID: PMC6062261 DOI: 10.1039/c7tx00172j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 09/14/2017] [Indexed: 11/21/2022] Open
Abstract
The use of fluorescent nanocrystals (NCs) as probes for bioimaging applications has emerged as an advantageous alternative to conventional organic fluorescent dyes. Therefore their toxicological evaluation and intracellular delivery are currently a primary field of research. In this work, hydrophobic and highly fluorescent CdSe@ZnS NCs were encapsulated into the lipid bilayer of liposomes by the micelle-to-vesicle transition (MVT) method. The obtained aqueous NC-liposome suspensions preserved the spectroscopic characteristics of the native NCs. A systematic study of the in vitro toxicological effect on HeLa cells of these red emitting NC-liposomes was then carried out and compared to that of empty liposomes. By using liposomes of different phospholipid composition, we evaluated the effect of the lipid carrier on the cytotoxicity towards HeLa cells. Surprisingly, a cell proliferation and death study along with the MTT test on HeLa cells treated with NC-liposomes have shown that the toxic effects of NCs, at concentrations up to 20 nM, are negligible compared to those of the lipid carrier, especially when this is constituted by the cationic phospholipid DOTAP. In particular, obtained data suggest that DOTAP has a dose- and time-dependent toxic effect on HeLa cells. In contrast, the addition of PEG to the liposomes does not alter significantly the viability of the cells. In addition, the ability of NC-liposomes to penetrate the HeLa cells was assessed by fluorescence and confocal microscopy investigation. Captured images show that NC-liposomes are internalized into cells through the endocytic pathway, enter early endosomes and reach lysosomes in 1 h. Interestingly, red emitting NCs co-localized with endosomes and were positioned at the limiting membrane of the organelles. The overall results suggest that the fluorescent system as a whole, NCs and their carrier, should be considered for the development of fully safe biological applications of CdSe@ZnS NCs, and provide essential indications to define the optimal experimental conditions to use the proposed system as an optical probe for future in vivo experiments.
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Affiliation(s)
- Vincenzo De Leo
- Chemistry Department , University of Bari "Aldo Moro" , Via Orabona 4 , 70125 Bari , Italy .
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
| | - Francesco Milano
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
| | - Aurora Paiano
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA) , University of Salento , Via Provinciale Lecce-Monteroni n. 165 , 73100 Lecce , Italy .
| | - Roberta Bramato
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA) , University of Salento , Via Provinciale Lecce-Monteroni n. 165 , 73100 Lecce , Italy .
| | - Livia Giotta
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA) , University of Salento , Via Provinciale Lecce-Monteroni n. 165 , 73100 Lecce , Italy .
| | - Roberto Comparelli
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
| | - Silvia Ruscigno
- Chemistry Department , University of Bari "Aldo Moro" , Via Orabona 4 , 70125 Bari , Italy .
| | - Angela Agostiano
- Chemistry Department , University of Bari "Aldo Moro" , Via Orabona 4 , 70125 Bari , Italy .
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
| | - Cecilia Bucci
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA) , University of Salento , Via Provinciale Lecce-Monteroni n. 165 , 73100 Lecce , Italy .
| | - Lucia Catucci
- Chemistry Department , University of Bari "Aldo Moro" , Via Orabona 4 , 70125 Bari , Italy .
- CNR-IPCF , Institute for Chemical and Physical processes , Via Orabona 4 , 70125 Bari , Italy
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13
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De Leo V, Mattioli-Belmonte M, Cimmarusti MT, Panniello A, Dicarlo M, Milano F, Agostiano A, De Giglio E, Catucci L. Liposome-modified titanium surface: A strategy to locally deliver bioactive molecules. Colloids Surf B Biointerfaces 2017; 158:387-396. [DOI: 10.1016/j.colsurfb.2017.07.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 06/09/2017] [Accepted: 07/03/2017] [Indexed: 12/26/2022]
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14
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Longobardi F, Casiello G, Centonze V, Catucci L, Agostiano A. Isotope ratio mass spectrometry in combination with chemometrics for characterization of geographical origin and agronomic practices of table grape. J Sci Food Agric 2017; 97:3173-3180. [PMID: 27885687 DOI: 10.1002/jsfa.8161] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 08/15/2016] [Revised: 11/04/2016] [Accepted: 11/21/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Although table grape is one of the most cultivated and consumed fruits worldwide, no study has been reported on its geographical origin or agronomic practice based on stable isotope ratios. This study aimed to evaluate the usefulness of isotopic ratios (i.e. 2 H/1 H, 13 C/12 C, 15 N/14 N and 18 O/16 O) as possible markers to discriminate the agronomic practice (conventional versus organic farming) and provenance of table grape. RESULTS In order to quantitatively evaluate which of the isotopic variables were more discriminating, a t test was carried out, in light of which only δ13 C and δ18 O provided statistically significant differences (P ≤ 0.05) for the discrimination of geographical origin and farming method. Principal component analysis (PCA) showed no good separation of samples differing in geographical area and agronomic practice; thus, for classification purposes, supervised approaches were carried out. In particular, general discriminant analysis (GDA) was used, resulting in prediction abilities of 75.0 and 92.2% for the discrimination of farming method and origin respectively. CONCLUSION The present findings suggest that stable isotopes (i.e. δ18 O, δ2 H and δ13 C) combined with chemometrics can be successfully applied to discriminate the provenance of table grape. However, the use of bulk nitrogen isotopes was not effective for farming method discrimination. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Francesco Longobardi
- Dipartimento di Chimica, Università di Bari 'Aldo Moro', Via Orabona 4, I-70126, Bari, Italy
| | - Grazia Casiello
- Dipartimento di Chimica, Università di Bari 'Aldo Moro', Via Orabona 4, I-70126, Bari, Italy
| | - Valentina Centonze
- Dipartimento di Chimica, Università di Bari 'Aldo Moro', Via Orabona 4, I-70126, Bari, Italy
| | - Lucia Catucci
- Dipartimento di Chimica, Università di Bari 'Aldo Moro', Via Orabona 4, I-70126, Bari, Italy
- Consiglio Nazionale delle Ricerche, Istituto per i Processi Chimico-Fisici (IPCF-CNR), sez. di Bari, Via Orabona 4, I-70126, Bari, Italy
| | - Angela Agostiano
- Dipartimento di Chimica, Università di Bari 'Aldo Moro', Via Orabona 4, I-70126, Bari, Italy
- Consiglio Nazionale delle Ricerche, Istituto per i Processi Chimico-Fisici (IPCF-CNR), sez. di Bari, Via Orabona 4, I-70126, Bari, Italy
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15
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De Leo V, Catucci L, Di Mauro AE, Agostiano A, Giotta L, Trotta M, Milano F. Effect of ultrasound on the function and structure of a membrane protein: The case study of photosynthetic Reaction Center from Rhodobacter sphaeroides. Ultrason Sonochem 2017; 35:103-111. [PMID: 27639525 DOI: 10.1016/j.ultsonch.2016.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 07/15/2016] [Revised: 09/05/2016] [Accepted: 09/06/2016] [Indexed: 06/06/2023]
Abstract
Ultrasounds are used in many industrial, medical and research applications. Properties and function of proteins are strongly influenced by the interaction with the ultrasonic waves and their bioactivity can be lost because of alteration of protein structure. Surprisingly, to the best of our knowledge no study was carried out on Integral Membrane Proteins (IMPs), which are responsible for a variety of fundamental biological functions. In this work, the photosynthetic Reaction Center (RC) of the bacterium Rhodobacter sphaeroides has been used as a model for the study of the ultrasound-induced IMP denaturation. Purified RCs were suspended in i) detergent micelles, in ii) detergent-free buffer and iii) reconstituted in liposomes, and then treated with ultrasound at 30W and 20kHz at increasing times. The optical absorption spectra showed a progressive and irreversible denaturation in all cases, resulting from the perturbation of the protein scaffold structure, as confirmed by circular dichroism spectra that showed progressive alterations of the RC secondary structure. Charge recombination kinetics were studied to assess the protein photoactivity. The lifetime for the loss of RC photoactivity was 32min in detergent micelles, ranged from 3.8 to 6.5min in the different proteoliposomes formulations, and 5.5min in detergent-free buffer. Atomic force microscopy revealed the formation of large RC aggregates related to the sonication-induced denaturation, in agreement with the scattering increase observed in solution.
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Affiliation(s)
- Vincenzo De Leo
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy; CNR-IPCF Institute for Physical and Chemical Processes, Bari Unit, Via Orabona 4, 70126 Bari, Italy.
| | - Lucia Catucci
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy; CNR-IPCF Institute for Physical and Chemical Processes, Bari Unit, Via Orabona 4, 70126 Bari, Italy
| | - A Evelyn Di Mauro
- CNR-IPCF Institute for Physical and Chemical Processes, Bari Unit, Via Orabona 4, 70126 Bari, Italy
| | - Angela Agostiano
- Department of Chemistry, University of Bari, Via Orabona 4, 70126 Bari, Italy; CNR-IPCF Institute for Physical and Chemical Processes, Bari Unit, Via Orabona 4, 70126 Bari, Italy
| | - Livia Giotta
- Department of Biological and Environmental Sciences and Technologies, University of Salento, SP Lecce-Monteroni, 73100 Lecce, Italy
| | - Massimo Trotta
- CNR-IPCF Institute for Physical and Chemical Processes, Bari Unit, Via Orabona 4, 70126 Bari, Italy
| | - Francesco Milano
- CNR-IPCF Institute for Physical and Chemical Processes, Bari Unit, Via Orabona 4, 70126 Bari, Italy
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16
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Depalo N, De Leo V, Corricelli M, Gristina R, Valente G, Casamassima E, Comparelli R, Laquintana V, Denora N, Fanizza E, Striccoli M, Agostiano A, Catucci L, Curri ML. Lipid-based systems loaded with PbS nanocrystals: near infrared emitting trackable nanovectors. J Mater Chem B 2017; 5:1471-1481. [PMID: 32264638 DOI: 10.1039/c6tb02590k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hydrophobic PbS nanocrystals (NCs) emitting in the near infrared spectral region were encapsulated in the core of micelles and in the bilayer of liposomes, respectively, to form polyethylene glycol (PEG)-grafted phospholipids. The phospholipid-based functionalization process of PbS NCs required the replacement of the pristine capping ligand at the NC surface with thiol molecules. The procedures carried out for two systems, micelles and liposomes, using PEG-modified phospholipids were carefully monitored by optical, morphological and structural investigations. The hydrodynamic diameter and the colloidal stability of both micelles and liposomes loaded with PbS NCs were evaluated using Dynamic Light Scattering (DLS) and ζ-potential experiments, and both were satisfactorily stable in physiological media. The cytotoxicity of the resulting PbS NC-loaded nanovectors was assessed by the in vitro investigation on Saos-2 cells, indicating that the toxicity of the PbS NC loaded liposomes was lower than that of the micelles with the same NC cargo, which is reasonable due to the different overall composition of the two prepared nanocarriers. Finally, the cellular uptake in the Saos-2 cells of both the NC containing systems was evaluated by means of confocal microscopy studies by exploiting a visible fluorescent phospholipid and demonstrating the ability of both luminescent nanovectors to be internalized. The obtained results show the great potential of the prepared emitting nanoprobes for imaging applications in the second biological window.
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Affiliation(s)
- N Depalo
- Istituto per i Processi Chimico-Fisici-CNR UOS Bari, Via Orabona 4, 70125 - Bari, Italy.
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17
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Valenzano S, De Girolamo A, DeRosa MC, McKeague M, Schena R, Catucci L, Pascale M. Screening and Identification of DNA Aptamers to Tyramine Using in Vitro Selection and High-Throughput Sequencing. ACS Comb Sci 2016; 18:302-13. [PMID: 27057927 DOI: 10.1021/acscombsci.5b00163] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Aptamers are synthetic single-stranded DNA or RNA sequences that can fold into tertiary structures allowing them to interact with and bind to targets with high affinity and specificity. This paper describes the first selection and identification of DNA aptamers able to recognize the biogenic amine tyramine. To successfully isolate aptamers to this challenging small molecule target, the SELEX methodology was adapted by combining a systematic strategy to increase the selection stringency and monitor enrichment success. As the benefits of applying high-throughput sequencing (HTS) in SELEX experiments is becoming more clear, this method was employed in combination with bioinformatics analysis to evaluate the utility of the selection strategy and to uncover new potential high affinity sequences. On the basis of the presence of consensus regions (sequence families) and family similarities (clusters), 15 putative aptamers to tyramine were identified. A recently described workflow approach to perform a primary screening and characterization of the aptamer candidates by microequilibrium dialysis and by microscale thermophoresis was next leveraged. These candidate aptamers exhibited dissociation constant (Kd) values in the range of 0.2-152 μM with aptamer Tyr_10 as the most promising one followed by aptamer Tyr_14. These aptamers could be used as promising molecular recognition tools for the development of inexpensive, robust and innovative biosensor platforms for the detection of tyramine in food and beverages.
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Affiliation(s)
- Stefania Valenzano
- Institute
of Sciences of Food Production, National Research Council of Italy, via G. Amendola 122/O, 70126 Bari, Italy
| | - Annalisa De Girolamo
- Institute
of Sciences of Food Production, National Research Council of Italy, via G. Amendola 122/O, 70126 Bari, Italy
| | - Maria C. DeRosa
- Chemistry
Department, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario Canada K1S 5B6
| | - Maureen McKeague
- Chemistry
Department, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario Canada K1S 5B6
| | - Roberto Schena
- Institute
of Sciences of Food Production, National Research Council of Italy, via G. Amendola 122/O, 70126 Bari, Italy
| | - Lucia Catucci
- Chemistry
Department, University of Bari “Aldo Moro”, via Orabona
4, 70126 Bari, Italy
| | - Michelangelo Pascale
- Institute
of Sciences of Food Production, National Research Council of Italy, via G. Amendola 122/O, 70126 Bari, Italy
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Longobardi F, Casiello G, Cortese M, Perini M, Camin F, Catucci L, Agostiano A. Discrimination of geographical origin of lentils (Lens culinaris Medik.) using isotope ratio mass spectrometry combined with chemometrics. Food Chem 2015; 188:343-9. [DOI: 10.1016/j.foodchem.2015.05.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 04/27/2015] [Accepted: 05/06/2015] [Indexed: 11/26/2022]
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19
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Calvano CD, Italiano F, Catucci L, Agostiano A, Cataldi TRI, Palmisano F, Trotta M. Erratum to: The lipidome of the photosynthetic bacterium Rhodobacter sphaeroides R26 is affected by cobalt and chromate ions stress. Biometals 2015; 28:229. [DOI: 10.1007/s10534-014-9818-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Longobardi F, Casiello G, Ventrella A, Mazzilli V, Nardelli A, Sacco D, Catucci L, Agostiano A. Electronic nose and isotope ratio mass spectrometry in combination with chemometrics for the characterization of the geographical origin of Italian sweet cherries. Food Chem 2014; 170:90-6. [PMID: 25306321 DOI: 10.1016/j.foodchem.2014.08.057] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 08/06/2014] [Accepted: 08/12/2014] [Indexed: 11/30/2022]
Abstract
Sweet cherries from two Italian regions, Apulia and Emilia Romagna, were analysed using electronic nose (EN) and isotope ratio mass spectrometry (IRMS), with the aim of distinguishing them according to their geographic origin. The data were elaborated by statistical techniques, examining the EN and IRMS datasets both separately and in combination. Preliminary exploratory overviews were performed and then linear discriminant analyses (LDA) were used for classification. Regarding EN, different approaches for variable selection were tested, and the most suitable strategies were highlighted. The LDA classification results were expressed in terms of recognition and prediction abilities and it was found that both EN and IRMS performed well, with IRMS showing better cross-validated prediction ability (91.0%); the EN-IRMS combination gave slightly better results (92.3%). In order to validate the final results, the models were tested using an external set of samples with excellent results.
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Affiliation(s)
- F Longobardi
- Dipartimento di Chimica, Università di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy.
| | - G Casiello
- Dipartimento di Chimica, Università di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - A Ventrella
- Dipartimento di Chimica, Università di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - V Mazzilli
- Dipartimento di Chimica, Università di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - A Nardelli
- Dipartimento di Chimica, Università di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - D Sacco
- Dipartimento di Chimica, Università di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - L Catucci
- Dipartimento di Chimica, Università di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy; Consiglio Nazionale delle Ricerche, Istituto per i Processi Chimico-Fisici (IPCF-CNR), sez. di Bari, Via Orabona 4, 70126 Bari, Italy
| | - A Agostiano
- Dipartimento di Chimica, Università di Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy; Consiglio Nazionale delle Ricerche, Istituto per i Processi Chimico-Fisici (IPCF-CNR), sez. di Bari, Via Orabona 4, 70126 Bari, Italy
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21
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De Leo V, Catucci L, Falqui A, Marotta R, Striccoli M, Agostiano A, Comparelli R, Milano F. Hybrid assemblies of fluorescent nanocrystals and membrane proteins in liposomes. Langmuir 2014; 30:1599-1608. [PMID: 24460372 DOI: 10.1021/la404160b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Because of the growing potential of nanoparticles in biological and medical applications, tuning and directing their properties toward a high compatibility with the aqueous biological milieu is of remarkable relevance. Moreover, the capability to combine nanocrystals (NCs) with biomolecules, such as proteins, offers great opportunities to design hybrid systems for both nanobiotechnology and biomedical technology. Here we report on the application of the micelle-to-vesicle transition (MVT) method for incorporation of hydrophobic, red-emitting CdSe@ZnS NCs into the bilayer of liposomes. This method enabled the construction of a novel hybrid proteo-NC-liposome containing, as model membrane protein, the photosynthetic reaction center (RC) of Rhodobacter sphaeroides. Electron microscopy confirmed the insertion of NCs within the lipid bilayer without significantly altering the structure of the unilamellar vesicles. The resulting aqueous NC-liposome suspensions showed low turbidity and kept unaltered the wavelengths of absorbance and emission peaks of the native NCs. A relative NC fluorescence quantum yield up to 8% was preserved after their incorporation in liposomes. Interestingly, in proteo-NC-liposomes, RC is not denatured by Cd-based NCs, retaining its structural and functional integrity as shown by absorption spectra and flash-induced charge recombination kinetics. The outlined strategy can be extended in principle to any suitably sized hydrophobic NC with similar surface chemistry and to any integral protein complex. Furthermore, the proposed approach could be used in nanomedicine for the realization of theranostic systems and provides new, interesting perspectives for understanding the interactions between integral membrane proteins and nanoparticles, i.e., in nanotoxicology studies.
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Affiliation(s)
- Vincenzo De Leo
- Department of Chemistry, Università degli Studi di Bari , Via Orabona 4, 70126 Bari, Italy
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22
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Calvano CD, Italiano F, Catucci L, Agostiano A, Cataldi TRI, Palmisano F, Trotta M. The lipidome of the photosynthetic bacterium Rhodobacter sphaeroides R26 is affected by cobalt and chromate ions stress. Biometals 2013; 27:65-73. [PMID: 24249151 DOI: 10.1007/s10534-013-9687-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 11/10/2013] [Indexed: 02/07/2023]
Abstract
A detailed characterization of membrane lipids of the photosynthetic bacterium Rhodobacter (R.) sphaeroides was accomplished by thin-layer chromatography coupled with matrix-assisted laser desorption ionization mass spectrometry. Such an approach allowed the identification of the main membrane lipids belonging to different classes, namely cardiolipins (CLs), phosphatidylethanolamines, phosphatidylglycerols (PGs), phosphatidylcholines, and sulfoquinovosyldiacylglycerols (SQDGs). Thus, the lipidomic profile of R. sphaeroides R26 grown in abiotic stressed conditions by exposure to bivalent cobalt cation and chromate oxyanion, was investigated. Compared to bacteria grown under control conditions, significant lipid alterations take place under both stress conditions; cobalt exposure stress results in the relative content increase of CLs and SQDGs, most likely compensating the decrease in PGs content, whereas chromate stress conditions result in the relative content decrease of both PGs and SQDGs, leaving CLs unaltered. For the first time, the response of R. sphaeroides to heavy metals as Co(2+) and CrO4 (2-) is reported and changes in membrane lipid profiles were rationalised.
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Affiliation(s)
- Cosima Damiana Calvano
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126, Bari, Italy
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23
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Annese C, Abbrescia DI, Catucci L, D'Accolti L, Denora N, Fanizza I, Fusco C, La Piana G. Site-dependent biological activity of valinomycin analogs bearing derivatizable hydroxyl sites. J Pept Sci 2013; 19:751-7. [DOI: 10.1002/psc.2571] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/11/2013] [Accepted: 09/11/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Cosimo Annese
- Dipartimento di Chimica; Università degli Studi di Bari A. Moro; via Orabona 4 70126 Bari Italy
- CNR-Istituto dei Composti Organometallici (ICCOM), Bari section; via Orabona 4 70126 Bari Italy
| | - Daniela I. Abbrescia
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica; Università degli Studi di Bari A. Moro; via Orabona 4 70126 Bari Italy
| | - Lucia Catucci
- Dipartimento di Chimica; Università degli Studi di Bari A. Moro; via Orabona 4 70126 Bari Italy
| | - Lucia D'Accolti
- Dipartimento di Chimica; Università degli Studi di Bari A. Moro; via Orabona 4 70126 Bari Italy
- CNR-Istituto dei Composti Organometallici (ICCOM), Bari section; via Orabona 4 70126 Bari Italy
| | - Nunzio Denora
- Dipartimento di Farmacia - Scienze del Farmaco; Università degli Studi di Bari A. Moro; via Orabona 4 70126 Bari Italy
| | - Immacolata Fanizza
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica; Università degli Studi di Bari A. Moro; via Orabona 4 70126 Bari Italy
| | - Caterina Fusco
- CNR-Istituto dei Composti Organometallici (ICCOM), Bari section; via Orabona 4 70126 Bari Italy
| | - Gianluigi La Piana
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica; Università degli Studi di Bari A. Moro; via Orabona 4 70126 Bari Italy
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Longobardi F, Iacovelli V, Catucci L, Panzarini G, Pascale M, Visconti A, Agostiano A. Determination of ochratoxin A in wine by means of immunoaffinity and aminopropyl solid-phase column cleanup and fluorometric detection. J Agric Food Chem 2013; 61:1604-1608. [PMID: 22954202 DOI: 10.1021/jf303068m] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A new analytical method for the determination of ochratoxin A (OTA) in red wine has been developed by using a double-extract cleanup and a fluorometric measurement after spectral deconvolution. Wine samples were diluted with a solution containing 1% polyethylene glycol and 5% sodium hydrogencarbonate, filtered, and purified by immunoaffinity and aminopropyl solid-phase column. OTA contents in the purified extract were determined by a spectrofluorometer (excitation wavelength, 330 nm; emission wavelength, 470 nm) after deconvolution of fluorescence spectra. Average recoveries from wine samples spiked with OTA at levels ranging from 0.5 to 3.0 ng/mL were 94.5-105.4% with relative standard deviations (RSD) of <15% (n = 4). The limit of detection (LOD) was 0.2 ng/mL, and the total time of analysis was 30 min. The developed method was tested on 18 red wine samples (naturally contaminated and spiked with OTA at levels ranging from 0.4 to 3.0 ng/mL) and compared with AOAC Official Method 2001.01, based on immunoaffinity column cleanup and HPLC with fluorescence detector. A good correlation (r(2) = 0.9765) was observed between OTA levels obtained with the two methods, highlighting the reliability of the proposed method, the main advantage of which is the simple OTA determination by a benchtop fluorometer with evident reductions of cost and time of analysis.
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Catucci L, De Leo V, Milano F, Giotta L, Vitale R, Agostiano A, Corcelli A. Oxidoreductase activity of chromatophores and purified cytochrome bc1 complex from Rhodobacter sphaeroides: a possible role of cardiolipin. J Bioenerg Biomembr 2012; 44:487-93. [PMID: 22733014 DOI: 10.1007/s10863-012-9447-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 05/29/2012] [Indexed: 11/26/2022]
Abstract
Osmotic shock was used as a tool to obtain cardiolipin (CL) enriched chromatophores of Rhodobacter sphaeroides. After incubation of cells in iso- and hyper-osmotic buffers both chromatophores with a physiological lipid profile (Control) and with an almost doubled amount of CL (CL enriched) were isolated. Spectroscopic properties, reaction centre (RC) and reducible cytochrome (cyt) contents in Control and CL enriched chromatophores were the same. The oxidoreductase activity was found higher for CL enriched than for Control chromatophores, raising from 60 ± 2 to 93 ± 3 mol cyt c s(-1) (mol total cyt c)(-1). Antymicin and myxothiazol were tested to prove that oxidoreductase activity thus measured was mainly attributable to the cyt bc ( 1 ) complex. The enzyme was then purified from BH6 strain yielding a partially delipidated and almost inactive cyt bc ( 1 ) complex, although the protein was found to maintain its structural integrity in terms of subunit composition. The ability of CL in restoring the activity of the partially delipidated cyt bc ( 1 ) complex was proved in micellar systems by addition of exogenous CL. Results here reported indicate that CL affects oxidoreductase activity in the bacterium Rhodobacter sphaeroides both in chromatophore and in purified cyt bc ( 1 ) complex.
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Affiliation(s)
- Lucia Catucci
- Department of Chemistry, Università di Bari Aldo Moro, Via Orabona 4, 70126, Bari, Italy.
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Longobardi F, Ventrella A, Casiello G, Sacco D, Catucci L, Agostiano A, Kontominas MG. Instrumental and multivariate statistical analyses for the characterisation of the geographical origin of Apulian virgin olive oils. Food Chem 2012; 133:579-84. [PMID: 25683436 DOI: 10.1016/j.foodchem.2012.01.059] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 01/05/2012] [Accepted: 01/19/2012] [Indexed: 10/14/2022]
Abstract
In this paper, virgin olive oils (VOOs) coming from three different geographic origins of Apulia, were analysed for free acidity, peroxide value, spectrophotometric indexes, chlorophyll content, sterol, fatty acid, and triacylglycerol compositions. In order to predict the geographical origin of VOOs, different multivariate approaches were applied. By performing principal component analysis (PCA) a modest natural grouping of the VOOs was observed on the basis of their origin, and consequently three supervised techniques, i.e., general discriminant analysis (GDA), partial least squares-discriminant analysis (PLS-DA) and soft independent modelling of class analogy (SIMCA) were used and the results were compared. In particular, the best prediction ability was produced by applying GDA (average prediction ability of 82.5%), even if interesting results were obtained also by applying the other two classification techniques, i.e., 77.2% and 75.5% for PLS-DA and SIMCA, respectively.
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Affiliation(s)
- F Longobardi
- Dipartimento di Chimica, Campus Universitario, Università di Bari, Via Orabona 4, 70126 Bari, Italy.
| | - A Ventrella
- Dipartimento di Chimica, Campus Universitario, Università di Bari, Via Orabona 4, 70126 Bari, Italy
| | - G Casiello
- Dipartimento di Chimica, Campus Universitario, Università di Bari, Via Orabona 4, 70126 Bari, Italy
| | - D Sacco
- Dipartimento di Chimica, Campus Universitario, Università di Bari, Via Orabona 4, 70126 Bari, Italy
| | - L Catucci
- Dipartimento di Chimica, Campus Universitario, Università di Bari, Via Orabona 4, 70126 Bari, Italy; IPCF-CNR, sez. Bari, Via Orabona 4, 70126 Bari, Italy
| | - A Agostiano
- Dipartimento di Chimica, Campus Universitario, Università di Bari, Via Orabona 4, 70126 Bari, Italy; IPCF-CNR, sez. Bari, Via Orabona 4, 70126 Bari, Italy; INSTM, Via G. Giusti 9, 50121 Firenze, Italy
| | - M G Kontominas
- Laboratory of Food Chemistry and Technology, Department of Chemistry, University of Ioannina, P.O. Box 1186, 45110 Ioannina, Greece
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Ventrella A, Catucci L, Placido T, Longobardi F, Agostiano A. Biomaterials based on photosynthetic membranes as potential sensors for herbicides. Biosens Bioelectron 2011; 26:4747-52. [PMID: 21684143 DOI: 10.1016/j.bios.2011.05.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 05/20/2011] [Accepted: 05/25/2011] [Indexed: 11/17/2022]
Abstract
In this study, ultrathin film multilayers of Photosystem II-enriched photosynthetic membranes (BBY) were prepared and immobilized on quartz substrates by means of a Layer by Layer procedure exploiting electrostatic interactions with poly(ethylenimine) as polyelectrolyte. The biomaterials thus obtained were characterized by means of optical techniques and Atomic Force Microscopy, highlighting the fact that the Layer by Layer approach allowed the BBYs to be immobilized with satisfactory results. The activity of these hybrid materials was evaluated by means of optical assays based on the Hill Reaction, indicating that the biosamples, which preserved about 65% of their original activity even ten weeks after preparation, were both stable and active. Furthermore, an investigation of the biochips' sensitivity to the herbicide terbutryn, as a model analyte, gave interesting results: inhibition of photosynthetic activity was observed at terbutryn concentrations higher than 10(-7)M, thus evidencing the potential of such biomaterials in the environmental biosensor field.
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Affiliation(s)
- Andrea Ventrella
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
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Ventrella A, Catucci L, Agostiano A. Herbicides affect fluorescence and electron transfer activity of spinach chloroplasts, thylakoid membranes and isolated Photosystem II. Bioelectrochemistry 2010; 79:43-9. [DOI: 10.1016/j.bioelechem.2009.10.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Revised: 10/30/2009] [Accepted: 10/31/2009] [Indexed: 10/20/2022]
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Ventrella A, Catucci L, Piletska E, Piletsky S, Agostiano A. Interactions between heavy metals and photosynthetic materials studied by optical techniques. Bioelectrochemistry 2009; 77:19-25. [DOI: 10.1016/j.bioelechem.2009.05.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 05/19/2009] [Accepted: 05/19/2009] [Indexed: 10/20/2022]
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De Leo V, Catucci L, Ventrella A, Milano F, Agostiano A, Corcelli A. Cardiolipin increases in chromatophores isolated from Rhodobacter sphaeroides after osmotic stress: structural and functional roles. J Lipid Res 2009; 50:256-64. [DOI: 10.1194/jlr.m800312-jlr200] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Cosma P, Fini P, Rochira S, Catucci L, Castagnolo M, Agostiano A, Gristina R, Nardulli M. Phototoxicity and cytotoxicity of chlorophyll a/cyclodextrins complexes on Jurkat cells. Bioelectrochemistry 2008; 74:58-61. [DOI: 10.1016/j.bioelechem.2008.04.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Revised: 04/10/2008] [Accepted: 04/19/2008] [Indexed: 11/30/2022]
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Maragos CM, Appell M, Lippolis V, Visconti A, Catucci L, Pascale M. Use of cyclodextrins as modifiers of fluorescence in the detection of mycotoxins. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2008; 25:164-71. [PMID: 18286406 DOI: 10.1080/02652030701564555] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Cyclodextrins, cyclic oligosaccharides composed of amylose subunits, are known to interact with mycotoxins. The interactions may be useful to analytical chemists by altering the properties of the mycotoxin of interest, namely the chromatographic properties, electrophoretic properties, fluorescence, or absorption of these fungal metabolites. Practical applications of these effects have been the incorporation of cyclodextrins into high-performance liquid chromatography and capillary electrophoresis methods for mycotoxin detection. Specific mycotoxins include those with a native fluorescence such as the aflatoxins, ochratoxin A (OTA) and zearalenone (ZEN) as well as those that can be rendered fluorescent through derivatization, such as T-2 toxin. The literature describing the applications of cyclodextrins in mycotoxin analysis is reviewed and an attempt to extend the use of cyclodextrins to the detection of labelled T-2 toxin is presented. Twenty cyclodextrins were evaluated for their ability to enhance the fluorescence emission of T-2 toxin derivatized with pyrene-1-carbonyl cyanide (T2-Pyr). This evaluation revealed that heptakis (2,6-di-O-methyl)-beta-cyclodextrin (DIMEB), in particular, enhanced T2-Pyr fluorescence. DIMEB was used as a buffer modifier in a capillary electrophoresis-laser-induced fluorescence (CE-LIF) method for detecting T-2 in maize. Because of the effects that certain cyclodextrins have, especially under aqueous conditions, they may make useful additives for a variety of mycotoxin analytical methods.
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Affiliation(s)
- C M Maragos
- Mycotoxin Research Unit, USDA-ARS-NCAUR, Peoria, IL 61604, USA.
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Ventrella A, Catucci L, Agostiano A. Effect of aggregation state, temperature and phospholipids on photobleaching of photosynthetic pigments in spinach Photosystem II core complexes. Bioelectrochemistry 2008; 73:43-8. [DOI: 10.1016/j.bioelechem.2008.04.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Revised: 03/14/2008] [Accepted: 04/07/2008] [Indexed: 11/24/2022]
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Ventrella A, Catucci L, Mascolo G, Corcelli A, Agostiano A. Isolation and characterization of lipids strictly associated to PSII complexes: Focus on cardiolipin structural and functional role. Biochimica et Biophysica Acta (BBA) - Biomembranes 2007; 1768:1620-7. [PMID: 17490608 DOI: 10.1016/j.bbamem.2007.03.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2006] [Revised: 03/13/2007] [Accepted: 03/29/2007] [Indexed: 11/21/2022]
Abstract
In this work, lipid extracts from spinach membrane fragments enriched in Photosystem II (PSII) and from spinach PSII dimers were analyzed, by means of Thin Layer Chromatography (TLC) and Electro-Spray Ionization Mass Spectrometry. Cardiolipin found in association with PSII was isolated and purified by preparative TLC, then characterized by mass and mass-mass analyses. Cardiolipin structures with four unsaturated C18 acyl chains and variable saturation degrees were evidenced. Structural and functional effects of different phospholipids on PSII complexes were investigated by Fluorescence, Resonance Light Scattering and Oxygen Evolution Rate measurements. An increment of PSII thermal stability was observed in the presence of cardiolipin and phosphatidylglycerol.
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Affiliation(s)
- A Ventrella
- Dip. di Chimica, Università di Bari, Via Orabona 4, 70126 Bari, Italy
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Fini P, Loseto R, Catucci L, Cosma P, Agostiano A. Study on the aggregation and electrochemical properties of Rose Bengal in aqueous solution of cyclodextrins. Bioelectrochemistry 2007; 70:44-9. [PMID: 16720111 DOI: 10.1016/j.bioelechem.2006.03.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2005] [Indexed: 11/30/2022]
Abstract
The interactions of Rose Bengal (RB) with alpha-cyclodextrin (alpha-CD), hydroxypropyl-beta-cyclodextrin (HP-beta-CD), hydroxypropyl-gamma-cyclodextrin (HP-gamma-CD), heptakis(2,3,6-tri-O-methyll)-beta-cyclodextrin (TM-beta-CD) were studied in aqueous solutions of 0.1 M KClO(4) and 0.1 M LiClO(4) by vis absorption, fluorescence spectroscopy as well as electrochemical measurements at 298 K. The spectrophometric results indicate that RB is included in all beta- and gamma-CDs forming complexes with a stoichiometry 1:1 whose stability is slightly higher in KClO(4) than in LiClO(4) solutions. The complex stability constants determined for salt-containing CD solutions are lower than those for water solutions. The complexation of RB with beta- and gamma-CD and the differences between the complexes obtained in the presence of the two salts were confirmed by an electrochemical study.
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Affiliation(s)
- Paola Fini
- IPCF-CNR, sezione di Bari, c/o Dipartimento di Chimica, Università degli Studi di Bari, Via Orabona 4, 70126 Bari, Italy.
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Abstract
In this work the effect of temperature and n-dodecyl-beta-d-maltoside (DM) on PSII complexes organization was investigated. An aggregation process of PSII monomers and dimers was documented at different temperatures and low DM concentration by steady-state fluorescence, absorption, circular dichroism, Rayleigh and dynamic light-scattering experiments. Measures of oxygen evolution enabled us to estimate the change in photoactivity of PSII during the aggregation. This process was found to be extensively reversed by increasing DM concentration as proved by means of steady-state fluorescence and dynamic light-scattering experiments.
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Affiliation(s)
- A Ventrella
- Dipartimento di Chimica, Universita' di Bari, Via Orabona 4, 70126 Bari, Italy
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Dentuto PL, Catucci L, Cosma P, Fini P, Agostiano A, Hackbarth S, Rancan F, Roeder B. Cyclodextrin/chlorophyll a complexes as supramolecular photosensitizers. Bioelectrochemistry 2007; 70:39-43. [PMID: 16731052 DOI: 10.1016/j.bioelechem.2006.03.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2005] [Indexed: 11/28/2022]
Abstract
The interactions between chlorophyll a, and three cyclodextrins, hydroxypropyl-beta-cyclodextrin heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin and hydroxypropyl-gamma-cyclodextrin, were studied in aqueous solutions by means of absorption, emission and circular dichroism spectroscopy. Nanosecond laser flash photolysis and steady-state singlet oxygen generation experiments were performed to clarify the photoactivity of chlorophyll a in these systems. Moreover the photosensitizing activity of these complexes towards human leukemia T-lymphocytes (Jurkat cells) was tested and compared with that of the free sensitizer, chlorophyll a. The results obtained indicate that each cyclodextrin is able to carry the pigment in monomeric form inside of cells producing singlet oxygen.
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Affiliation(s)
- P L Dentuto
- Dipartimento di Chimica Università di Bari Via Orabona 4, 70126 Bari, Italy.
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Cosma P, Catucci L, Fini P, Dentuto PL, Agostiano A, Angelini N, Scolaro LM. Tetrakis(4-pyridyl)porphyrin supramolecular complexes with cyclodextrins in aqueous solution. Photochem Photobiol 2006; 82:563-9. [PMID: 16613514 DOI: 10.1562/2005-09-26-ra-694] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The formation of inclusion complexes of hydroxypropyl-beta-cyclodextrin, heptakis(2,6-di-O-methyl)-beta-cyclodextrin and heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin with 5,10,15,20-tetrakis(4-pyridyl)porphyrin (TpyP) has been studied in aqueous buffer solution (phosphate buffer pH = 7 and I = 0.01 M) to give a structural and spectroscopic characterization of a new class of potential sensitizers for photodynamic therapy. The interaction was investigated by a combination of UV/Vis absorption, fluorescence anisotropy, time-resolved fluorescence and circular dichroism. The experimental results point to the presence of the pigment in water in a monomeric complexed form. The fluorescence anisotropy measurements suggest that TpyP forms 1:1 complexes with heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin and hydroxypropyl-beta-cyclodextrin, while 1:2 complexes are obtained with heptakis(2,6-di-O-methyl)-beta-cyclodextrin.
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Affiliation(s)
- Pinalysa Cosma
- Dipartimento di Chimica, Università di Bari, Bari, Italy.
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Abstract
In this work, we performed investigations on the lipid content of higher plants (spinach) under hyperosmotic stress, by means of thin layer chromatography (TLC) and mass spectrometry. In particular, the experiments have been performed at different plant organization levels: whole leaves, freshly prepared protoplast suspension and mesophyll cells obtained by reformation of the cell wall from protoplast suspension. The results obtained showed that hyperosmotic stress induces changes in the phospholipid content depending on the different plant organization levels studied. All phospholipids showed an increment of their content in stressed whole leaves. In particular, phosphatidylglycerol (PG) redoubles its content by 1 h of osmotic shock. Different responses to hyperosmotic stress were reported for the other systems. In the case of protoplasts, an increment of PG, phosphatidylcholine (PC) and phosphatidylinositol (PI) together with biphosphatidylglycerol (BPG) and phosphatidylethanolamine (PE) content decreasing were observed in stressed sample. For PG, identified as PG (34:4) by elecrospray ionization mass spectrometry, the increment was of about 30%. In the case of cells, conversely, a decrease of PG content under osmotic stress was recorded. The results suggest an important role of phospholipids, in particular of PG, in the osmotic stress response.
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Affiliation(s)
- L Bavaro
- Dip. di Chimica, Universita' di Bari, Via Orabona 4, 70126 Bari, Italy
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Abstract
The phospholipid composition of Rhodobacter sphaeroides cells resuspended in various hypertonic solutions has been examined by thin-layer chromatography and ESI mass spectrometry. R. sphaeroides responds to hyperosmotic stress by increasing the amount of cardiolipin in the membranes; this phenomenon occurs in spheroplasts also. Cardiolipin increases quickly and continuously during the time when the cells are resuspended in hypertonic medium. The optimum of stimulation of the neosynthesis of cardiolipin during osmotic stress was found to be at external 1 osm. ESI-MS analyses allowed the identification of two different cardiolipins in R. sphaeroides: the tetravaccenylcardiolipin ([M - H](-), m/z 1456.9) and the trivaccenylmonopalmitoylcardiolipin ([M - H](-), m/z 1430.0).
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Affiliation(s)
- Lucia Catucci
- Dipartimento di Chimica, Università degli Studi di Bari, Bari, Italy
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Dentuto PL, Catucci L, Cosma P, Fini P, Agostiano A, D'Accolti L, Trevithick-Sutton CC, Foote CS. Effect of Cyclodextrins on the Physicochemical Properties of Chlorophyll a in Aqueous Solution. J Phys Chem B 2004; 109:1313-7. [PMID: 16851096 DOI: 10.1021/jp047132p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The interactions between chlorophyll a and two beta-cyclodextrins, that have the same cavity size but different substituents, were studied in aqueous solutions. These supramolecular host-guest complexes were examined by a combination of UV/vis absorption, circular dichroism, NMR, and steady-state and time-resolved fluorescence measurements. The results indicate that all cyclodextrins solubilize the pigment mainly in monomeric form in water. The pigment forms 1:1 complexes with the heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin and 1:2 complexes with the hydroxypropyl-beta-cyclodextrin. In such complexes the methyl groups of the cyclodextrin inner cavity are involved in the interaction with the pigment as evidenced by NMR measurements. We also measured the luminescence of singlet oxygen photosensitized by chlorophyll a in the inclusion complexes.
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Affiliation(s)
- Pasquale L Dentuto
- Dipartimento di Chimica, Università di Bari, Via Orabona 4, 70126 Bari, Italy
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Depalo N, Catucci L, Mallardi A, Corcelli A, Agostiano A. Enrichment of cardiolipin content throughout the purification procedure of photosystem II. Bioelectrochemistry 2004; 63:103-6. [PMID: 15110257 DOI: 10.1016/j.bioelechem.2003.09.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2003] [Revised: 09/18/2003] [Accepted: 09/22/2003] [Indexed: 10/26/2022]
Abstract
Photosystem II is a multisubunit membrane complex which performs the water oxidation process in the higher plants. Core dimers and monomers of photosystem II have been isolated from thylakoid membranes by sucrose density gradient centrifugation. Lipids extracted from different photosystem II-enriched fractions obtained from spinach thylakoids have been analysed by thin layer chromatography. Cardiolipin is enriched throughout the purification of photosystem II complexes; in particular dimers contained two times more cardiolipin than their monomeric counterparts.
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Affiliation(s)
- N Depalo
- Dipartimento di Chimica, Università di Bari, via Orabona 4, I-70126 Bari, Italy
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Fini P, Castagnolo M, Catucci L, Cosma P, Agostiano A. Calorimetric evaluation of the acetone partition in AOT/water/isooctane microemulsions. Colloids Surf A Physicochem Eng Asp 2004. [DOI: 10.1016/j.colsurfa.2004.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fini P, Longobardi F, Catucci L, Cosma P, Agostiano A. Spectroscopic and electrochemical study of Rose Bengal in aqueous solutions of cyclodextrins. Bioelectrochemistry 2004; 63:107-10. [PMID: 15110258 DOI: 10.1016/j.bioelechem.2003.09.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2003] [Revised: 09/18/2003] [Accepted: 09/24/2003] [Indexed: 11/18/2022]
Abstract
The interaction of Rose Bengal (RB) in aqueous solution of LiClO4 0.1 M with alpha-cyclodextrin (alpha-CD), hydroxypropyl-beta-cyclodextrins (HP-beta-CD) and hydroxypropyl-gamma-cyclodextrins (HP-gamma-CD) were studied by spectrophotometric measurements. The presence of Induced Circular Signals and the results of the analysis of the modifications in the absorbance spectra of RB produced by the presence of CDs in solution indicate that RB forms inclusion complexes only with HP-beta-CD and with HP-gamma-CD.
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Affiliation(s)
- P Fini
- Istituto per i Processi Chimico Fisici (IPCF) CNR, sez. Bari, Via Orabona 4, 70126 Bari, Italy.
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Dentuto PL, Catucci L, Cosma P, Fini P, Agostiano A. Photophysical and electrochemical properties of chlorophyll a–cyclodextrins complexes. Bioelectrochemistry 2004; 63:117-20. [PMID: 15110260 DOI: 10.1016/j.bioelechem.2003.09.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2003] [Revised: 09/18/2003] [Accepted: 09/24/2003] [Indexed: 10/26/2022]
Abstract
In this work, we have studied the interactions between two different cyclodextrins (CDs) and chlorophyll a (Chl a) in the presence of electrolyte by means of absorption, fluorescence spectroscopy, circular dichroism and cyclic voltammetry. The results obtained indicate that the presence of both CDs gives rise to an increase of Chl a solubility in water. In particular, heptakis-(2,3,6-tri-O-methyl)-beta-cyclodextrin (TRIMEB) favours the dissolution of Chl a monomer in aqueous solution, whereas the presence of hydroxypropyl-beta-cyclodextrin (beta-HP-CD) promotes the pigment aggregation.
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Catucci L, Lattanzio VMT, Lobasso S, Agostiano A, Corcelli A. Role of endogenous lipids in the chromophore regeneration of bacteriorhodopsin. Bioelectrochemistry 2004; 63:111-5. [PMID: 15110259 DOI: 10.1016/j.bioelechem.2003.09.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2003] [Revised: 09/22/2003] [Accepted: 09/25/2003] [Indexed: 10/26/2022]
Abstract
The regeneration method of Khorana [J. Biol. Chem. 262 (1987) 9271] has been modified in order to study the effect of endogenous archaeabacterial lipids and, in particular, of glycocardiolipin (GlyC) in the refolding and chromophore regeneration of bacteriorhodopsin (BR). BR refolding and chromophore regeneration could be obtained in the presence of endogenous lipid mixtures containing or not containing glycocardiolipin; however, the kinetics of bacteriorhodopsin regeneration in the presence of glycocardiolipin was faster than in its absence. These results show for the first time that the interaction of glycocardiolipin with bacteriorhodopsin favours its refolding from the denaturated state and the chromophore regeneration.
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Affiliation(s)
- L Catucci
- Dipartimento di Chimica, Università di Bari, Via Orabona 4, 70126 Bari, Italy
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Agostiano A, Catucci L, Cosma P, Fini P. Aggregation processes and photophysical properties of chlorophyll a in aqueous solutions modulated by the presence of cyclodextrins. Phys Chem Chem Phys 2003. [DOI: 10.1039/b211903j] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Agostiano A, Catucci L, Colafemmina G, Scheer H. Role of Functional Groups and Surfactant Charge in Regulating Chlorophyll Aggregation in Micellar Solutions. J Phys Chem B 2002. [DOI: 10.1021/jp011718j] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Angela Agostiano
- Dipartimento di Chimica, Università degli Studi di Bari, via Orabona 4, 70126 Bari, Italy, CNR Centro Studi Chimico Fisici Sulla Interazione Luce-Materia, and Botanisches Institut der Universität, Menzinger Str. 67, 80638 München, Germany
| | - Lucia Catucci
- Dipartimento di Chimica, Università degli Studi di Bari, via Orabona 4, 70126 Bari, Italy, CNR Centro Studi Chimico Fisici Sulla Interazione Luce-Materia, and Botanisches Institut der Universität, Menzinger Str. 67, 80638 München, Germany
| | - Giuseppe Colafemmina
- Dipartimento di Chimica, Università degli Studi di Bari, via Orabona 4, 70126 Bari, Italy, CNR Centro Studi Chimico Fisici Sulla Interazione Luce-Materia, and Botanisches Institut der Universität, Menzinger Str. 67, 80638 München, Germany
| | - Hugo Scheer
- Dipartimento di Chimica, Università degli Studi di Bari, via Orabona 4, 70126 Bari, Italy, CNR Centro Studi Chimico Fisici Sulla Interazione Luce-Materia, and Botanisches Institut der Universität, Menzinger Str. 67, 80638 München, Germany
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Agostiano A, Catucci L, Colafemmina G, Della Monica M, Scheer H. Relevance of the chlorophyll phytyl chain on lamellar phase formation and organisation. Biophys Chem 2000; 84:189-94. [PMID: 10852306 DOI: 10.1016/s0301-4622(00)00137-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A series of modified chlorophylls (chlorophyll a, pyrochlorophyll a, Zn-pheophytin a and Zn-pheophorbide a) have been inserted into lamellar phases of sodium bis-(2-ethylhexyl)-sulfosuccinate (AOT). The role played by the different functional groups in affecting the bilayer formation and organisation has been investigated by means of the NMR quadrupolar splitting technique. Evidence is reported for the first time on the capacity of the phytyl chain of the chlorophylls to anchor the tetrapyrroles into the bilayer, favouring at the same time the regular formation of the lamellae.
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