Schaeffer Evelyne, Dehuyser Laure, Sigwalt David, Flacher Vincent, Bernacchi Serena, Chaloin Olivier, Remy Jean-Serge, Mueller Christopher G, Baati Rachid, Wagner Alain
Dynamic micelles of mannoside glycolipids are more efficient than polymers for inhibiting HIV-1 trans-infection Journal Article
In: Bioconjugate Chemistry, vol. 24, no. 11, pp. 1813–1823, 2013, ISSN: 1520-4812.
Abstract | Links | BibTeX | Tags: Anti-HIV Agents, Calcium, Cells, Chemistry, Cultured, Dendritic Cells, Dose-Response Relationship, Drug, Electron, fluorescence, Glycolipids, HIV, HIV Infections, HIV-1, Human, Humans, immunodeficiency, immunopathology, inhibition, LECTIN, Lectins, lipid, Mannosides, Micelles, Microbial Sensitivity Tests, Microscopy, Models, Molecular, Molecular Structure, Polymers, prophylaxis, Spectrometry, Structure-Activity Relationship, Surface Plasmon Resonance, target, Team-Mueller, Thermodynamics, Transmission, virus
@article{schaeffer_dynamic_2013,
title = {Dynamic micelles of mannoside glycolipids are more efficient than polymers for inhibiting HIV-1 trans-infection},
author = {Evelyne Schaeffer and Laure Dehuyser and David Sigwalt and Vincent Flacher and Serena Bernacchi and Olivier Chaloin and Jean-Serge Remy and Christopher G Mueller and Rachid Baati and Alain Wagner},
doi = {10.1021/bc4000806},
issn = {1520-4812},
year = {2013},
date = {2013-11-01},
journal = {Bioconjugate Chemistry},
volume = {24},
number = {11},
pages = {1813--1823},
abstract = {Mannoside glycolipid conjugates are able to inhibit human immunodeficiency virus type 1 (HIV-1) trans-infection mediated by human dendritic cells (DCs). The conjugates are formed by three building blocks: a linear or branched mannose head, a hydrophilic linker, and a 24-carbon lipid chain. We have shown that, even as single molecules, these compounds efficiently target mannose-binding lectins, such as DC-specific ICAM-3-grabbing nonintegrin (DC-SIGN) important for HIV-1 transmission. With the goal to optimize their inhibitory activity by supramolecular structure formation, we have compared saturated and unsaturated conjugates, as single molecules, self-assemblies of dynamic micelles, and photopolymerized cross-linked polymers. Surface plasmon resonance showed that, unexpectedly, polymers of trivalent conjugates did not display a higher binding affinity for DC-SIGN than single molecules. Interactions on a chip or in solution were independent of calcium; however, binding to DCs was inhibited by a calcium chelator. Moreover, HIV-1 trans-infection was mostly inhibited by dynamic micelles and not by rigid polymers. The inhibition data revealed a clear correlation between the structure and molecular assembly of a conjugate and its biological antiviral activity. We present an interaction model between DC-SIGN and conjugates-either single molecules, micelles, or polymers-that highlights that the most effective interactions by dynamic micelles involve both mannose heads and lipid chains. Our data reveal that trivalent glycolipid conjugates display the highest microbicide potential for HIV prophylaxis, as dynamic micelles conjugates and not as rigid polymers.},
keywords = {Anti-HIV Agents, Calcium, Cells, Chemistry, Cultured, Dendritic Cells, Dose-Response Relationship, Drug, Electron, fluorescence, Glycolipids, HIV, HIV Infections, HIV-1, Human, Humans, immunodeficiency, immunopathology, inhibition, LECTIN, Lectins, lipid, Mannosides, Micelles, Microbial Sensitivity Tests, Microscopy, Models, Molecular, Molecular Structure, Polymers, prophylaxis, Spectrometry, Structure-Activity Relationship, Surface Plasmon Resonance, target, Team-Mueller, Thermodynamics, Transmission, virus},
pubstate = {published},
tppubtype = {article}
}
Al-Jamal Khuloud T, Gherardini Lisa, Bardi Giuseppe, Nunes Antonio, Guo Chang, Bussy Cyrill, Herrero Antonia M, Bianco Alberto, Prato Maurizio, Kostarelos Kostas, Pizzorusso Tommaso
Functional motor recovery from brain ischemic insult by carbon nanotube-mediated siRNA silencing Journal Article
In: Proceedings of the National Academy of Sciences of the United States of America, vol. 108, no. 27, pp. 10952–10957, 2011, ISSN: 1091-6490.
Abstract | Links | BibTeX | Tags: Animals, Apoptosis, Base Sequence, Brain Ischemia, carbon, Caspase 3, Caspase Inhibitors, Cell Line, Cells, Cultured, Electron, Endothelin-1, Female, Genetic Therapy, I2CT, Inbred C57BL, Mice, Microscopy, Nanomedicine, Nanotubes, Neurons, Psychomotor Performance, Rats, RNA, RNA Interference, Small Interfering, Sprague-Dawley, Team-Bianco, Transmission
@article{al-jamal_functional_2011,
title = {Functional motor recovery from brain ischemic insult by carbon nanotube-mediated siRNA silencing},
author = {Khuloud T Al-Jamal and Lisa Gherardini and Giuseppe Bardi and Antonio Nunes and Chang Guo and Cyrill Bussy and Antonia M Herrero and Alberto Bianco and Maurizio Prato and Kostas Kostarelos and Tommaso Pizzorusso},
doi = {10.1073/pnas.1100930108},
issn = {1091-6490},
year = {2011},
date = {2011-07-01},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
volume = {108},
number = {27},
pages = {10952--10957},
abstract = {Stroke is the second cause of death worldwide with ischemic stroke accounting for 80% of all stroke insults. Caspase-3 activation contributes to brain tissue loss and downstream biochemical events that lead to programmed cell death after traumatic brain injury. Alleviation of symptoms following ischemic neuronal injury can be potentially achieved by either genetic disruption or pharmacological inhibition of caspases. Here, we studied whether silencing of Caspase-3 using carbon nanotube-mediated in vivo RNA interference (RNAi) could offer a therapeutic opportunity against stroke. Effective delivery of siRNA directly to the CNS has been shown to normalize phenotypes in animal models of several neurological diseases. It is shown here that peri-lesional stereotactic administration of a Caspase-3 siRNA (siCas 3) delivered by functionalized carbon nanotubes (f-CNT) reduced neurodegeneration and promoted functional preservation before and after focal ischemic damage of the rodent motor cortex using an endothelin-1 induced stroke model. These observations illustrate the opportunity offered by carbon nanotube-mediated siRNA delivery and gene silencing of neuronal tissue applicable to a variety of different neuropathological conditions where intervention at well localized brain foci may offer therapeutic and functional benefits.},
keywords = {Animals, Apoptosis, Base Sequence, Brain Ischemia, carbon, Caspase 3, Caspase Inhibitors, Cell Line, Cells, Cultured, Electron, Endothelin-1, Female, Genetic Therapy, I2CT, Inbred C57BL, Mice, Microscopy, Nanomedicine, Nanotubes, Neurons, Psychomotor Performance, Rats, RNA, RNA Interference, Small Interfering, Sprague-Dawley, Team-Bianco, Transmission},
pubstate = {published},
tppubtype = {article}
}
den Bossche Jeroen Van, Al-Jamal Wafa' T, Tian Bowen, Nunes Antonio, Fabbro Chiara, Bianco Alberto, Prato Maurizio, Kostarelos Kostas
Efficient receptor-independent intracellular translocation of aptamers mediated by conjugation to carbon nanotubes Journal Article
In: Chemical Communications (Cambridge, England), vol. 46, no. 39, pp. 7379–7381, 2010, ISSN: 1364-548X.
Abstract | Links | BibTeX | Tags: Aptamers, Base Sequence, Biological Transport, carbon, Cell Line, Cell Surface, DNA Primers, Electron, Electrophoresis, Humans, I2CT, Microscopy, Nanotubes, Nucleotide, Polyacrylamide Gel, Receptors, Team-Bianco, Transmission, tumor
@article{van_den_bossche_efficient_2010,
title = {Efficient receptor-independent intracellular translocation of aptamers mediated by conjugation to carbon nanotubes},
author = {Jeroen Van den Bossche and Wafa' T Al-Jamal and Bowen Tian and Antonio Nunes and Chiara Fabbro and Alberto Bianco and Maurizio Prato and Kostas Kostarelos},
doi = {10.1039/c0cc02092c},
issn = {1364-548X},
year = {2010},
date = {2010-10-01},
journal = {Chemical Communications (Cambridge, England)},
volume = {46},
number = {39},
pages = {7379--7381},
abstract = {We have covalently grafted aptamers onto carboxylated carbon nanotubes to design a novel vector system that can easily translocate into the cytosol of different cell types independent of receptor-mediated uptake. We propose the use of carbon nanotubes for the efficient intracellular delivery of biologically active aptamers for potential therapeutic applications.},
keywords = {Aptamers, Base Sequence, Biological Transport, carbon, Cell Line, Cell Surface, DNA Primers, Electron, Electrophoresis, Humans, I2CT, Microscopy, Nanotubes, Nucleotide, Polyacrylamide Gel, Receptors, Team-Bianco, Transmission, tumor},
pubstate = {published},
tppubtype = {article}
}
Lacerda Lara, Herrero Maria A, Venner Kerrie, Bianco Alberto, Prato Maurizio, Kostarelos Kostas
Carbon-nanotube shape and individualization critical for renal excretion Journal Article
In: Small (Weinheim an Der Bergstrasse, Germany), vol. 4, no. 8, pp. 1130–1132, 2008, ISSN: 1613-6829.
Links | BibTeX | Tags: Animals, Biological Transport, carbon, Electron, Female, Glomerular Filtration Rate, I2CT, Inbred BALB C, Kidney Glomerulus, Mice, Microscopy, Nanoparticles, nanotechnology, Nanotubes, Team-Bianco, Transmission
@article{lacerda_carbon-nanotube_2008,
title = {Carbon-nanotube shape and individualization critical for renal excretion},
author = {Lara Lacerda and Maria A Herrero and Kerrie Venner and Alberto Bianco and Maurizio Prato and Kostas Kostarelos},
doi = {10.1002/smll.200800323},
issn = {1613-6829},
year = {2008},
date = {2008-08-01},
journal = {Small (Weinheim an Der Bergstrasse, Germany)},
volume = {4},
number = {8},
pages = {1130--1132},
keywords = {Animals, Biological Transport, carbon, Electron, Female, Glomerular Filtration Rate, I2CT, Inbred BALB C, Kidney Glomerulus, Mice, Microscopy, Nanoparticles, nanotechnology, Nanotubes, Team-Bianco, Transmission},
pubstate = {published},
tppubtype = {article}
}
Bianco Alberto, Kostarelos Kostas, Prato Maurizio
Opportunities and challenges of carbon-based nanomaterials for cancer therapy Journal Article
In: Expert Opinion on Drug Delivery, vol. 5, no. 3, pp. 331–342, 2008, ISSN: 1742-5247.
Abstract | Links | BibTeX | Tags: Animals, carbon, Electron, Humans, I2CT, Microscopy, Nanomedicine, Nanostructures, Nanotubes, Neoplasms, Pharmaceutical, Team-Bianco, Technology, Transmission
@article{bianco_opportunities_2008,
title = {Opportunities and challenges of carbon-based nanomaterials for cancer therapy},
author = {Alberto Bianco and Kostas Kostarelos and Maurizio Prato},
doi = {10.1517/17425247.5.3.331},
issn = {1742-5247},
year = {2008},
date = {2008-01-01},
journal = {Expert Opinion on Drug Delivery},
volume = {5},
number = {3},
pages = {331--342},
abstract = {The possibility of incorporating carbon-based nanomaterials into living systems has opened the way for the investigation of their potential applications in the emerging field of nanomedicine. A wide variety of different nanomaterials based on allotropic forms of carbon, such as nanotubes, nanohorns and nanodiamonds, are currently being explored towards different biomedical applications. In this review, we discuss the recent advances in the development of these novel nanomaterials for cancer therapy. A comparison between the characteristics, the advantages, the drawbacks, the benefits and the risks associated with these novel biocompatible forms of carbon is presented here.},
keywords = {Animals, carbon, Electron, Humans, I2CT, Microscopy, Nanomedicine, Nanostructures, Nanotubes, Neoplasms, Pharmaceutical, Team-Bianco, Technology, Transmission},
pubstate = {published},
tppubtype = {article}
}
Ali-Boucetta Hanene, Al-Jamal Khuloud T, McCarthy David, Prato Maurizio, Bianco Alberto, Kostarelos Kostas
Multiwalled carbon nanotube-doxorubicin supramolecular complexes for cancer therapeutics Journal Article
In: Chemical Communications (Cambridge, England), no. 4, pp. 459–461, 2008, ISSN: 1359-7345.
Abstract | Links | BibTeX | Tags: Antineoplastic Agents, Breast Neoplasms, carbon, Cultured, Doxorubicin, Electron, Humans, I2CT, Microscopy, Nanotubes, Team-Bianco, Transmission, Tumor Cells
@article{ali-boucetta_multiwalled_2008,
title = {Multiwalled carbon nanotube-doxorubicin supramolecular complexes for cancer therapeutics},
author = {Hanene Ali-Boucetta and Khuloud T Al-Jamal and David McCarthy and Maurizio Prato and Alberto Bianco and Kostas Kostarelos},
doi = {10.1039/b712350g},
issn = {1359-7345},
year = {2008},
date = {2008-01-01},
journal = {Chemical Communications (Cambridge, England)},
number = {4},
pages = {459--461},
abstract = {Multiwalled carbon nanotube aqueous dispersions using block copolymers are able to form supramolecular complexes with the aromatic chromophore and anticancer agent doxorubicin via pi-pi stacking and enhance its cytotoxic activity.},
keywords = {Antineoplastic Agents, Breast Neoplasms, carbon, Cultured, Doxorubicin, Electron, Humans, I2CT, Microscopy, Nanotubes, Team-Bianco, Transmission, Tumor Cells},
pubstate = {published},
tppubtype = {article}
}
Nehme Nadine T, Liégeois Samuel, Kele Beatrix, Giammarinaro Philippe, Pradel Elizabeth, Hoffmann Jules A, Ewbank Jonathan J, Ferrandon Dominique
A model of bacterial intestinal infections in Drosophila melanogaster Journal Article
In: PLoS Pathog., vol. 3, no. 11, pp. e173, 2007, ISSN: 1553-7374.
Abstract | Links | BibTeX | Tags: Animal, Animals, Disease Models, Electron, ferrandon, fluorescence, Hemolymph, hoffmann, Host-Pathogen Interactions, Immunohistochemistry, Intestines, M3i, Microscopy, Reverse Transcriptase Polymerase Chain Reaction, Serratia Infections, Serratia marcescens, Transmission
@article{nehme_model_2007b,
title = {A model of bacterial intestinal infections in Drosophila melanogaster},
author = {Nadine T Nehme and Samuel Liégeois and Beatrix Kele and Philippe Giammarinaro and Elizabeth Pradel and Jules A Hoffmann and Jonathan J Ewbank and Dominique Ferrandon},
doi = {10.1371/journal.ppat.0030173},
issn = {1553-7374},
year = {2007},
date = {2007-01-01},
journal = {PLoS Pathog.},
volume = {3},
number = {11},
pages = {e173},
abstract = {Serratia marcescens is an entomopathogenic bacterium that opportunistically infects a wide range of hosts, including humans. In a model of septic injury, if directly introduced into the body cavity of Drosophila, this pathogen is insensitive to the host's systemic immune response and kills flies in a day. We find that S. marcescens resistance to the Drosophila immune deficiency (imd)-mediated humoral response requires the bacterial lipopolysaccharide O-antigen. If ingested by Drosophila, bacteria cross the gut and penetrate the body cavity. During this passage, the bacteria can be observed within the cells of the intestinal epithelium. In such an oral infection model, the flies succumb to infection only after 6 days. We demonstrate that two complementary host defense mechanisms act together against such food-borne infection: an antimicrobial response in the intestine that is regulated by the imd pathway and phagocytosis by hemocytes of bacteria that have escaped into the hemolymph. Interestingly, bacteria present in the hemolymph elicit a systemic immune response only when phagocytosis is blocked. Our observations support a model wherein peptidoglycan fragments released during bacterial growth activate the imd pathway and do not back a proposed role for phagocytosis in the immune activation of the fat body. Thanks to the genetic tools available in both host and pathogen, the molecular dissection of the interactions between S. marcescens and Drosophila will provide a useful paradigm for deciphering intestinal pathogenesis.},
keywords = {Animal, Animals, Disease Models, Electron, ferrandon, fluorescence, Hemolymph, hoffmann, Host-Pathogen Interactions, Immunohistochemistry, Intestines, M3i, Microscopy, Reverse Transcriptase Polymerase Chain Reaction, Serratia Infections, Serratia marcescens, Transmission},
pubstate = {published},
tppubtype = {article}
}
Singh Ravi, Pantarotto Davide, Lacerda Lara, Pastorin Giorgia, Klumpp Cédric, Prato Maurizio, Bianco Alberto, Kostarelos Kostas
Tissue biodistribution and blood clearance rates of intravenously administered carbon nanotube radiotracers Journal Article
In: Proceedings of the National Academy of Sciences of the United States of America, vol. 103, no. 9, pp. 3357–3362, 2006, ISSN: 0027-8424.
Abstract | Links | BibTeX | Tags: Animals, carbon, Electron, Female, Half-Life, I2CT, Inbred BALB C, Indium Radioisotopes, Injections, Intravenous, Mice, Microscopy, Molecular Structure, Nanotubes, Pentetic Acid, Team-Bianco, Tissue Distribution, Transmission
@article{singh_tissue_2006,
title = {Tissue biodistribution and blood clearance rates of intravenously administered carbon nanotube radiotracers},
author = {Ravi Singh and Davide Pantarotto and Lara Lacerda and Giorgia Pastorin and Cédric Klumpp and Maurizio Prato and Alberto Bianco and Kostas Kostarelos},
doi = {10.1073/pnas.0509009103},
issn = {0027-8424},
year = {2006},
date = {2006-02-01},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
volume = {103},
number = {9},
pages = {3357--3362},
abstract = {Carbon nanotubes (CNT) are intensively being developed for biomedical applications including drug and gene delivery. Although all possible clinical applications will require compatibility of CNT with the biological milieu, their in vivo capabilities and limitations have not yet been explored. In this work, water-soluble, single-walled CNT (SWNT) have been functionalized with the chelating molecule diethylentriaminepentaacetic (DTPA) and labeled with indium ((111)In) for imaging purposes. Intravenous (i.v.) administration of these functionalized SWNT (f-SWNT) followed by radioactivity tracing using gamma scintigraphy indicated that f-SWNT are not retained in any of the reticuloendothelial system organs (liver or spleen) and are rapidly cleared from systemic blood circulation through the renal excretion route. The observed rapid blood clearance and half-life (3 h) of f-SWNT has major implications for all potential clinical uses of CNT. Moreover, urine excretion studies using both f-SWNT and functionalized multiwalled CNT followed by electron microscopy analysis of urine samples revealed that both types of nanotubes were excreted as intact nanotubes. This work describes the pharmacokinetic parameters of i.v. administered functionalized CNT relevant for various therapeutic and diagnostic applications.},
keywords = {Animals, carbon, Electron, Female, Half-Life, I2CT, Inbred BALB C, Indium Radioisotopes, Injections, Intravenous, Mice, Microscopy, Molecular Structure, Nanotubes, Pentetic Acid, Team-Bianco, Tissue Distribution, Transmission},
pubstate = {published},
tppubtype = {article}
}