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Loffredo F, Vardaci E, Bianco D, Di Nitto A, Quarto M. Radioprotection for Astronauts’ Missions: Numerical Results on the Nomex Shielding Effectiveness. Life (Basel) 2023; 13:life13030790. [PMID: 36983945 PMCID: PMC10058850 DOI: 10.3390/life13030790] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/07/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
Space missions with humans expose the crews to ionizing radiation, mainly due to the galactic cosmic radiation (GCR). All radiation protection programs in space aim to minimize crews’ exposure to radiation. The radiation protection of astronauts can be achieved through the use of shields. The shields could serve as a suit to reduce GCR exposure and, in an emergency, as a radiation shelter to perform necessary interventions outside the space habitat in case of a solar proton event (SPE). A space radiation shielding that is suitable for exploration during space missions requires particular features and a proper knowledge of the radiation type. This study shows the results of numerical simulations performed with the Geant4 toolkit-based code DOSE. Calculations to evaluate the performance of Nomex, an aramidic fiber with high mechanical resistance, in terms of dose reduction to crews, were performed considering the interaction between protons with an energy spectrum ranging from 50 to 1100 MeV and a target slab of 20 g/cm2. This paper shows the properties of secondary products obtained as a result of the interaction between space radiation and a Nomex target and the properties of the secondary particles that come out the shield. The results of this study show that Nomex can be considered a good shield candidate material in terms of dose reductions. We also note that the secondary particles that provide the greatest contribution to the dose are protons, neutrons and, in a very small percentage, α-particles and Li ions.
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Affiliation(s)
- Filomena Loffredo
- Advanced Biomedical Sciences Department, University of Naples Federico II, 80131 Naples, Italy
- National Institute for Nuclear Physics (INFN), 80126 Napoli, Italy
- Correspondence:
| | - Emanuele Vardaci
- National Institute for Nuclear Physics (INFN), 80126 Napoli, Italy
- Department of Physics “E. Pancini”, University of Naples Federico II, Corso Umberto I, 80138 Naples, Italy
| | - Davide Bianco
- Italian Aerospace Research Centre (CIRA), Via Maiorise, 81043 Capua, Italy
| | - Antonio Di Nitto
- National Institute for Nuclear Physics (INFN), 80126 Napoli, Italy
- Department of Physics “E. Pancini”, University of Naples Federico II, Corso Umberto I, 80138 Naples, Italy
| | - Maria Quarto
- Advanced Biomedical Sciences Department, University of Naples Federico II, 80131 Naples, Italy
- National Institute for Nuclear Physics (INFN), 80126 Napoli, Italy
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2
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Götz M, Yakushev A, Götz S, Di Nitto A, Düllmann CE, Asai M, Chiera NM, Kindler B, Krier J, Lommel B, Nagame Y, Sato TK, Suzuki H, Tomitsuka T, Tokoi K, Toyoshima A, Tsukada K. Corrigendum to: Application of a novel gas phase synthesis approach to carbonyl complexes of accelerator-produced 5d transition metals (Radiochim. Acta 2022; 110 (2): 75–86). RADIOCHIM ACTA 2023. [DOI: 10.1515/ract-2022-0121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Michael Götz
- Department of Chemistry – TRIGA Site , Johannes Gutenberg University Mainz , 55128 Mainz , Germany
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
- Helmholtz Institute Mainz , 55099 Mainz , Germany
| | | | - Stefan Götz
- Department of Chemistry – TRIGA Site , Johannes Gutenberg University Mainz , 55128 Mainz , Germany
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
- Helmholtz Institute Mainz , 55099 Mainz , Germany
| | - Antonio Di Nitto
- Physics Department Ettore Pancini , University of Naples Federico II , 80126 Naples , Italy
| | - Christoph E. Düllmann
- Department of Chemistry – TRIGA Site , Johannes Gutenberg University Mainz , 55128 Mainz , Germany
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
- Helmholtz Institute Mainz , 55099 Mainz , Germany
| | - Masato Asai
- Japan Atomic Energy Agency , Tokai-Mura , Ibaraki 319-1111 , Japan
| | - Nadine M. Chiera
- Japan Atomic Energy Agency , Tokai-Mura , Ibaraki 319-1111 , Japan
| | - Birgit Kindler
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
| | - Jörg Krier
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
| | - Bettina Lommel
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
| | - Yuichiro Nagame
- Japan Atomic Energy Agency , Tokai-Mura , Ibaraki 319-1111 , Japan
| | - Tetsuya K. Sato
- Japan Atomic Energy Agency , Tokai-Mura , Ibaraki 319-1111 , Japan
| | - Hayato Suzuki
- Japan Atomic Energy Agency , Tokai-Mura , Ibaraki 319-1111 , Japan
- Ibaraki University , Mito , Ibaraki 310-8512 , Japan
| | | | - Katsuyuki Tokoi
- Japan Atomic Energy Agency , Tokai-Mura , Ibaraki 319-1111 , Japan
- Osaka University , Suita , Osaka 565-0871 , Japan
| | - Atsushi Toyoshima
- Japan Atomic Energy Agency , Tokai-Mura , Ibaraki 319-1111 , Japan
- Osaka University , Suita , Osaka 565-0871 , Japan
| | - Kazuaki Tsukada
- Japan Atomic Energy Agency , Tokai-Mura , Ibaraki 319-1111 , Japan
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Götz M, Yakushev A, Götz S, Di Nitto A, Düllmann CE, Asai M, Kindler B, Krier J, Lommel B, Nagame Y, Sato TK, Suzuki H, Tomitsuka T, Tokoi K, Toyoshima A, Tsukada K. Application of a novel gas phase synthesis approach to carbonyl complexes of accelerator-produced 5d transition metals. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2021-1028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In 2014 the first synthesis of a transactinide carbonyl complex – seaborgium hexacarbonyl – was reported. This was achieved in gas-phase chemical experiments in a beam-free environment behind the recoil separator GARIS. Extending this work to heavier elements requires more efficient techniques to synthesize carbonyl complexes as production rates of transactinide elements drop with increasing atomic number. A novel approach was thus conceived, which retains the benefit of a beam-free environment but avoids the physical preseparation step. The latter reduces the yields for products of asymmetric reactions such as those used for the synthesis of suitable isotopes of Sg, Bh, Hs and Mt. For this a series of experiments with accelerator-produced radioisotopes of the lighter homologues W, Re and Os was carried out at the tandem accelerator of JAEA Tokai, Japan. A newly developed double-chamber system, which allows for a decoupled recoil ion thermalization and chemical complex formation, was used, which avoids the low-efficiency physical preseparation step. Here, we demonstrate the feasibility of this newly developed method using accelerator-produced short-lived radioisotopes of the 5d homologues of the early transactinides.
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Affiliation(s)
- Michael Götz
- Department of Chemistry – TRIGA Site , Johannes Gutenberg University Mainz , 55128 Mainz , Germany
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
- Helmholtz Institute Mainz , 55099 Mainz , Germany
| | | | - Stefan Götz
- Department of Chemistry – TRIGA Site , Johannes Gutenberg University Mainz , 55128 Mainz , Germany
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
- Helmholtz Institute Mainz , 55099 Mainz , Germany
| | - Antonio Di Nitto
- Physics Department Ettore Pancini , University of Naples Federico II , 80126 Naples , Italy
| | - Christoph E. Düllmann
- Department of Chemistry – TRIGA Site , Johannes Gutenberg University Mainz , 55128 Mainz , Germany
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
- Helmholtz Institute Mainz , 55099 Mainz , Germany
| | - Masato Asai
- Japan Atomic Energy Agency , Tokai-mura , Ibaraki 319-1111 , Japan
| | - Birgit Kindler
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
| | - Jörg Krier
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
| | - Bettina Lommel
- GSI Helmholtz Centre for Heavy Ion Research , 64291 Darmstadt , Germany
| | - Yuichiro Nagame
- Japan Atomic Energy Agency , Tokai-mura , Ibaraki 319-1111 , Japan
| | - Tetsuya K. Sato
- Japan Atomic Energy Agency , Tokai-mura , Ibaraki 319-1111 , Japan
| | - Hayato Suzuki
- Japan Atomic Energy Agency , Tokai-mura , Ibaraki 319-1111 , Japan
- Ibaraki University , Mito , Ibaraki 310-8512 , Japan
| | | | - Katsuyuki Tokoi
- Japan Atomic Energy Agency , Tokai-mura , Ibaraki 319-1111 , Japan
- Osaka University , Suita , Osaka 565-0871 , Japan
| | - Atsushi Toyoshima
- Japan Atomic Energy Agency , Tokai-mura , Ibaraki 319-1111 , Japan
- Osaka University , Suita , Osaka 565-0871 , Japan
| | - Kazuaki Tsukada
- Japan Atomic Energy Agency , Tokai-mura , Ibaraki 319-1111 , Japan
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Chronopoulou L, Di Nitto A, Papi M, Parolini O, Falconi M, Teti G, Muttini A, Lattanzi W, Palmieri V, Ciasca G, Del Giudice A, Galantini L, Zanoni R, Palocci C. Biosynthesis and physico-chemical characterization of high performing peptide hydrogels@graphene oxide composites. Colloids Surf B Biointerfaces 2021; 207:111989. [PMID: 34303114 DOI: 10.1016/j.colsurfb.2021.111989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 03/18/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 12/29/2022]
Abstract
Hydrogels based on short peptide molecules are interesting biomaterials with wide present and prospective use in biotechnologies. A well-known possible drawback of these materials can be their limited mechanical performance. In order to overcome this problem, we prepared Fmoc-Phe3self-assembling peptides by a biocatalytic approach, and we reinforced the hydrogel with graphene oxide nanosheets. The formulation here proposed confers to the hydrogel additional physicochemical properties without hampering peptide self-assembly. We investigated in depth the effect of nanocarbon morphology on hydrogel properties (i.e. morphology, viscoelastic properties, stiffness, resistance to an applied stress). In view of further developments towards possible clinical applications, we have preliminarily tested the biocompatibility of the composites. Our results showed that the innovative hydrogel composite formulation based on FmocPhe3 and GO is a biomaterial with improved mechanical properties that appears suitable for the development of biotechnological applications.
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Affiliation(s)
| | | | | | - Ornella Parolini
- Fondazione Policlinico Universitario A. Gemelli IRCSS, Rome, Italy
| | - Mirella Falconi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy
| | - Gabriella Teti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy
| | - Aurelio Muttini
- Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, Italy
| | - Wanda Lattanzi
- Fondazione Policlinico Universitario A. Gemelli IRCSS, Rome, Italy
| | | | - Gabriele Ciasca
- Fondazione Policlinico Universitario A. Gemelli IRCSS, Rome, Italy
| | | | | | | | - Cleofe Palocci
- Department of Chemistry, University of Rome La Sapienza, Italy; CIABC, University of Rome La Sapienza, Italy.
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5
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Chronopoulou L, Cacciotti I, Amalfitano A, Di Nitto A, D'Arienzo V, Nocca G, Palocci C. Biosynthesis of innovative calcium phosphate/hydrogel composites: physicochemical and biological characterisation. Nanotechnology 2021; 32:095102. [PMID: 33120366 DOI: 10.1088/1361-6528/abc5f6] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The goal of supporting and directing tissue regeneration requires the design of new, advanced materials, with features like biocompatibility, biodegradability and adequate mechanical properties. Our work was focused on developing a new injectable biomimetic composite material, based on a peptidic hydrogel and calcium phosphates with the aim of mimicking the chemical composition of natural bone tissue. Arg-Gly-Asp-grafted chitosan was used to promote cell adhesion. The obtained composite hydrogel was characterized with differential scanning calorimetry measurements, rheological analysis, field emission scanning electron microscopy, Fourier transform infrared spectroscopy and nuclear magnetic resonance measurements. The biological responsiveness was assessed using the MG-63 human osteoblast cell line.
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Affiliation(s)
| | - Ilaria Cacciotti
- Engineering Department, Niccolò Cusano University, INSTM RU, Rome, Italy
| | - Adriana Amalfitano
- Dipartimento di Scienze biotecnologiche di base, cliniche intensivologiche e perioperatorie, Università Cattolica del Sacro Cuore, Rome, Italy
| | | | | | - Giuseppina Nocca
- Dipartimento di Scienze biotecnologiche di base, cliniche intensivologiche e perioperatorie, Università Cattolica del Sacro Cuore, Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Cleofe Palocci
- Department of Chemistry, University La Sapienza, Rome, Italy
- CIABC-Centro di Ricerca per le Scienze applicate alla Protezione dell'Ambiente e dei Beni Culturali, University La Sapienza, Rome, Italy
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6
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Simonetti G, Palocci C, Valletta A, Kolesova O, Chronopoulou L, Donati L, Di Nitto A, Brasili E, Tomai P, Gentili A, Pasqua G. Anti- Candida Biofilm Activity of Pterostilbene or Crude Extract from Non-Fermented Grape Pomace Entrapped in Biopolymeric Nanoparticles. Molecules 2019; 24:molecules24112070. [PMID: 31151290 PMCID: PMC6600237 DOI: 10.3390/molecules24112070] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 04/17/2019] [Revised: 05/19/2019] [Accepted: 05/28/2019] [Indexed: 12/16/2022] Open
Abstract
Polymeric nanoparticle-based carriers are promising agents to deliver drugs to cells. Vitis vinifera phenolic compounds are known for their antifungal activity against Candida albicans. The aim of the present study was to investigate the antifungal activity of pterostilbene or crude extracts from non-fermented grape pomace, entrapped in poly(lactic-co-glycolic) acid nanoparticles (NPs), with diameters of 50 and 150 nm, on Candida biofilm. The fluorescent probe coumarin 6 was used to study the uptake of poly(lactic-co-glycolic)acid (PLGA) NPs in planktonic cells and biofilm. The green fluorescent signal of coumarin 6 was observed in Candida biofilm after 24 and 48 hours. Both pterostilbene and crude pomace extract entrapped in NPs exerted a significantly higher anti-biofilm activity compared to their free forms. The entrapment efficiency of both pterostilbene and crude pomace extract in PLGA NPs was ~90%. At 16 µg/mL, pterostilbene loaded in PLGA NPs reduced biofilm formation of 63% and reduced mature biofilm of 50%. Moreover, at 50 µg/mL, the pomace extract loaded in NPs reduced mature biofilm of 37%. These results strongly suggest that PLGA NPs are promising nanodevices for the delivery of antifungal drugs as the crude grape pomace extract, a by-product of white wine making.
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Affiliation(s)
- Giovanna Simonetti
- Department of Public Health and Infectious Diseases "Sapienza" University of Rome, P. le Aldo Moro 5, 00185 Rome, Italy.
| | - Cleofe Palocci
- Department of Chemistry "Sapienza" University of Rome, 00185 Rome, Italy.
| | - Alessio Valletta
- Department of Environmental Biology "Sapienza" University of Rome, 00185 Rome, Italy.
| | - Olga Kolesova
- Department of Public Health and Infectious Diseases "Sapienza" University of Rome, P. le Aldo Moro 5, 00185 Rome, Italy.
| | - Laura Chronopoulou
- Department of Chemistry "Sapienza" University of Rome, 00185 Rome, Italy.
| | - Livia Donati
- Department of Environmental Biology "Sapienza" University of Rome, 00185 Rome, Italy.
| | - Antonio Di Nitto
- Department of Chemistry "Sapienza" University of Rome, 00185 Rome, Italy.
| | - Elisa Brasili
- Department of Environmental Biology "Sapienza" University of Rome, 00185 Rome, Italy.
| | - Pierpaolo Tomai
- Department of Chemistry "Sapienza" University of Rome, 00185 Rome, Italy.
| | - Alessandra Gentili
- Department of Chemistry "Sapienza" University of Rome, 00185 Rome, Italy.
| | - Gabriella Pasqua
- Department of Environmental Biology "Sapienza" University of Rome, 00185 Rome, Italy.
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7
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Lens L, Yakushev A, Düllmann CE, Asai M, Ballof J, Block M, David HM, Despotopulos J, Di Nitto A, Eberhardt K, Even J, Götz M, Götz S, Haba H, Harkness-Brennan L, Heßberger FP, Herzberg RD, Hoffmann J, Hübner A, Jäger E, Judson D, Khuyagbaatar J, Kindler B, Komori Y, Konki J, Kratz JV, Krier J, Kurz N, Laatiaoui M, Lahiri S, Lommel B, Maiti M, Mistry AK, Mokry C, Moody K, Nagame Y, Omtvedt JP, Papadakis P, Pershina V, Runke J, Schädel M, Scharrer P, Sato T, Shaughnessy D, Schausten B, Thörle-Pospiech P, Trautmann N, Tsukada K, Uusitalo J, Ward A, Wegrzecki M, Wiehl N, Yakusheva V. Online chemical adsorption studies of Hg, Tl, and Pb on SiO2 and Au surfaces in preparation for chemical investigations on Cn, Nh, and Fl at TASCA. RADIOCHIM ACTA 2018. [DOI: 10.1515/ract-2017-2914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Online gas-solid adsorption studies with single-atom quantities of Hg, Tl, and Pb, the lighter homologs of the superheavy elements (SHE) copernicium (Cn, Z=112), nihonium (Nh, Z=113), and flerovium (Fl, Z=114), were carried out using short-lived radioisotopes. The interaction with Au and SiO2 surfaces was studied and the overall chemical yield was determined. Suitable radioisotopes were produced in fusion-evaporation reactions, isolated in the gas-filled recoil separator TASCA, and flushed rapidly to an adjacent setup of two gas chromatography detector arrays covered with SiO2 (first array) and Au (second array). While Tl and Pb adsorbed on the SiO2 surface, Hg interacts only weakly and reached the Au-covered array. Our results contribute to elucidating the influence of relativistic effects on chemical properties of the heaviest elements by providing experimental data on these lighter homologs.
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Affiliation(s)
- Lotte Lens
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Alexander Yakushev
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Christoph Emanuel Düllmann
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Masato Asai
- Japan Atomic Energy Agency , 319-1195 Tokai-mura, Naka-gun, Ibaraki , Japan
| | - Jochen Ballof
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Section Isolde, Cern , 1211 Geneva , Switzerland
| | - Michael Block
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Helena May David
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | | | - Antonio Di Nitto
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Klaus Eberhardt
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Julia Even
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
- KVI-Center for Advanced Radiation , Technology University of Groningen , 9747 AA Groningen , The Netherlands
| | - Michael Götz
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Stefan Götz
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | | | | | - Fritz Peter Heßberger
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Rodi D. Herzberg
- Department of Physics , University of Liverpool , L69 7ZE Liverpool , UK
| | - Jan Hoffmann
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Annett Hübner
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Egon Jäger
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Daniel Judson
- Department of Physics , University of Liverpool , L69 7ZE Liverpool , UK
| | - Jadambaa Khuyagbaatar
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Birgit Kindler
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | | | - Joonas Konki
- Section Isolde, Cern , 1211 Geneva , Switzerland
- Department of Physics , University of Jyväskylä , 40014 Jyväskylä , Finland
| | - Jens Volker Kratz
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
| | - Jörg Krier
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Nikolaus Kurz
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Mustapha Laatiaoui
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Susanta Lahiri
- Chemical Sciences Division , Saha Institute of Nuclear Physics , 700064 Kolkata , India
| | - Bettina Lommel
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Moumita Maiti
- Department of Physics , Indian Institute of Technology Roorkee , 247667 Uttarakhand , India
| | - Andrew K. Mistry
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Christoph Mokry
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Ken Moody
- Lawrence Livermore National Laboratory , Livermore, CA 94551 , USA
| | - Yuichiro Nagame
- Japan Atomic Energy Agency , 319-1195 Tokai-mura, Naka-gun, Ibaraki , Japan
| | | | | | - Valeria Pershina
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Jörg Runke
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Matthias Schädel
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Japan Atomic Energy Agency , 319-1195 Tokai-mura, Naka-gun, Ibaraki , Japan
| | - Paul Scharrer
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Tetsuya Sato
- Japan Atomic Energy Agency , 319-1195 Tokai-mura, Naka-gun, Ibaraki , Japan
| | - Dawn Shaughnessy
- Lawrence Livermore National Laboratory , Livermore, CA 94551 , USA
| | - Brigitta Schausten
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
| | - Petra Thörle-Pospiech
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Norbert Trautmann
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
| | - Kazuaki Tsukada
- Japan Atomic Energy Agency , 319-1195 Tokai-mura, Naka-gun, Ibaraki , Japan
| | - Juha Uusitalo
- Department of Physics , University of Jyväskylä , 40014 Jyväskylä , Finland
| | - Andrew Ward
- Department of Physics , University of Liverpool , L69 7ZE Liverpool , UK
| | | | - Norbert Wiehl
- Institut für Kernchemie , Johannes Gutenberg-Universität , 55122 Mainz , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
| | - Vera Yakusheva
- GSI Helmholtzzentrum für Schwerionenforschung , 64291 Darmstadt , Germany
- Helmholtz-Institut Mainz , 55099 Mainz , Germany
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Chronopoulou L, Sennato S, Bordi F, Giannella D, Di Nitto A, Barbetta A, Dentini M, Togna AR, Togna GI, Moschini S, Palocci C. Designing unconventional Fmoc-peptide-based biomaterials: structure and related properties. Soft Matter 2014; 10:1944-52. [PMID: 24651999 DOI: 10.1039/c3sm52457d] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We have recently employed L-amino acids in the lipase-catalyzed biofabrication of a class of self-assembling Fmoc-peptides that form 3-dimensional nanofiber scaffolds. Here we report that using d-amino acids, the homochiral self-assembling peptide Fmoc-D-Phe3 (Fmoc-F*F*F*) also forms a 3-dimensional nanofiber scaffold that is substantially distinguishable from its L-peptide and heterochiral peptide (F*FF and FF*F*) counterparts on the basis of their physico-chemical properties. Such chiral peptides self-assemble into ordered nanofibers with well defined fibrillar motifs. Circular dichroism and atomic force microscopy have been employed to study in depth such fibrillar peptide structures. Dexamethasone release kinetics from PLGA and CS-PLGA nanoparticles entrapped within the peptidic hydrogel matrix encourage its use for applications in drug controlled release.
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Affiliation(s)
- Laura Chronopoulou
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome 00185, Italy.
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