Publications
2019
Bordoni Valentina, Reina Giacomo, Orecchioni Marco, Furesi Giulia, Thiele Stefanie, Gardin Chiara, Zavan Barbara, Cuniberti Gianaurelio, Bianco Alberto, Rauner Martina, Delogu Lucia G
Stimulation of bone formation by monocyte-activator functionalized graphene oxide in vivo Journal Article
In: Nanoscale, vol. 11, no. 41, pp. 19408–19421, 2019, ISSN: 2040-3372.
Abstract | Links | BibTeX | Tags: Animals, Biocompatible Materials, Bone Morphogenetic Protein 2, Calcium Phosphates, Cell Differentiation, Cell Survival, Coculture Techniques, Graphite, Humans, I2CT, Inbred C57BL, Male, Mesenchymal Stem Cells, Mice, Monocytes, Oncostatin M, Osteoblasts, Osteogenesis, Signal Transduction, Team-Bianco, Tibia, Wnt Proteins
@article{bordoni_stimulation_2019,
title = {Stimulation of bone formation by monocyte-activator functionalized graphene oxide in vivo},
author = {Valentina Bordoni and Giacomo Reina and Marco Orecchioni and Giulia Furesi and Stefanie Thiele and Chiara Gardin and Barbara Zavan and Gianaurelio Cuniberti and Alberto Bianco and Martina Rauner and Lucia G Delogu},
doi = {10.1039/c9nr03975a},
issn = {2040-3372},
year = {2019},
date = {2019-11-01},
journal = {Nanoscale},
volume = {11},
number = {41},
pages = {19408--19421},
abstract = {Nanosystems are able to enhance bone regeneration, a complex process requiring the mutual interplay between immune and skeletal cells. Activated monocytes can communicate pro-osteogenic signals to mesenchymal stem cells and promote osteogenesis. Thus, the activation of monocytes is a promising strategy to improve bone regeneration. Nanomaterials specifically selected to provoke immune-mediated bone formation are still missing. As a proof of concept, we apply here the intrinsic immune-characteristics of graphene oxide (GO) with the well-recognized osteoinductive capacity of calcium phosphate (CaP) in a biocompatible nanomaterial called maGO-CaP (monocytes activator GO complexed with CaP). In the presence of monocytes, the alkaline phosphatase activity and the expression of osteogenic markers increased. Studying the mechanisms of action, we detected an up-regulation of Wnt and BMP signaling, two key osteogenic pathways. The role of the immune activation was evidenced by the over-production of oncostatin M, a pro-osteogenic factor produced by monocytes. Finally, we tested the pro-osteogenic effects of maGO-CaP in vivo. maGO-CaP injected into the tibia of mice enhanced local bone mass and the bone formation rate. Our study suggests that maGO-CaP can activate monocytes to enhance osteogenesis ex vivo and in vivo.},
keywords = {Animals, Biocompatible Materials, Bone Morphogenetic Protein 2, Calcium Phosphates, Cell Differentiation, Cell Survival, Coculture Techniques, Graphite, Humans, I2CT, Inbred C57BL, Male, Mesenchymal Stem Cells, Mice, Monocytes, Oncostatin M, Osteoblasts, Osteogenesis, Signal Transduction, Team-Bianco, Tibia, Wnt Proteins},
pubstate = {published},
tppubtype = {article}
}
Murera Diane, Malaganahalli Sowmya, Martín Cristina, Reina Giacomo, Fauny Jean-Daniel, Dumortier Hélène, Vázquez Ester, Bianco Alberto
Few layer graphene does not affect the function and the autophagic activity of primary lymphocytes Journal Article
In: Nanoscale, vol. 11, no. 21, pp. 10493–10503, 2019, ISSN: 2040-3372.
Abstract | Links | BibTeX | Tags: Animals, Autophagy, B-Lymphocytes, Dumortier, Graphite, I2CT, Inbred BALB C, Mice, Nanostructures, T-Lymphocytes, Team-Bianco, Team-Dumortier
@article{murera_few_2019,
title = {Few layer graphene does not affect the function and the autophagic activity of primary lymphocytes},
author = {Diane Murera and Sowmya Malaganahalli and Cristina Martín and Giacomo Reina and Jean-Daniel Fauny and Hélène Dumortier and Ester Vázquez and Alberto Bianco},
doi = {10.1039/c9nr00846b},
issn = {2040-3372},
year = {2019},
date = {2019-01-01},
journal = {Nanoscale},
volume = {11},
number = {21},
pages = {10493--10503},
abstract = {Carbon-based nanomaterials represent a new tool in future medical applications. Thus, focusing on the evaluation of the degree of their safety has been growing in the last years. In this study we were particularly interested in understanding the impact of few layer graphene (FLG) on primary murine lymphocytes. These B and T cells, that are the second, but specialized, line of defense of the immune system, rely on various mechanisms to ensure their efficient function and maintenance. One of these mechanisms is autophagy that can be triggered by various nanomaterials in some types of cells. For these reasons, we were interested in evaluating the way FLG could affect this process in lymphocytes. Our results point out that FLG neither impacts the viability and activation of T and B cells nor their autophagic activity. Using confocal microscopy, we were also able to see that FLG does not appear to cause any membrane damage and does not penetrate inside of these cells. Overall, our data do not show any effect of this material on lymphocyte homeostasis, which is one more argument in favor of the continuation of studies investigating the potential of FLG for therapeutic applications.},
keywords = {Animals, Autophagy, B-Lymphocytes, Dumortier, Graphite, I2CT, Inbred BALB C, Mice, Nanostructures, T-Lymphocytes, Team-Bianco, Team-Dumortier},
pubstate = {published},
tppubtype = {article}
}
Lucherelli Matteo Andrea, Raya Jésus, Edelthalhammer Konstantin F, Hauke Frank, Hirsch Andreas, Abellán Gonzalo, Bianco Alberto
A Straightforward Approach to Multifunctional Graphene Journal Article
In: Chemistry (Weinheim an Der Bergstrasse, Germany), vol. 25, no. 57, pp. 13218–13223, 2019, ISSN: 1521-3765.
Abstract | Links | BibTeX | Tags: carbon materials, diazonium salts, Functionalization, Graphite, I2CT, orthogonal protection, Team-Bianco
@article{lucherelli_straightforward_2019,
title = {A Straightforward Approach to Multifunctional Graphene},
author = {Matteo Andrea Lucherelli and Jésus Raya and Konstantin F Edelthalhammer and Frank Hauke and Andreas Hirsch and Gonzalo Abellán and Alberto Bianco},
doi = {10.1002/chem.201903165},
issn = {1521-3765},
year = {2019},
date = {2019-01-01},
journal = {Chemistry (Weinheim an Der Bergstrasse, Germany)},
volume = {25},
number = {57},
pages = {13218--13223},
abstract = {Graphene has been covalently functionalized through a one-pot reductive pathway using graphite intercalation compounds (GICs), in particular KC8 , with three different orthogonally protected derivatives of 4-aminobenzylamine. This novel multifunctional platform exhibits excellent bulk functionalization homogeneity (Hbulk ) and degree of addition while preserving the chemical functionalities of the organic addends through different protecting groups, namely: tert-butyloxycarbonyl (Boc), benzyloxycarbonyl (Cbz) and phthalimide (Pht). We have employed (temperature-dependent) statistical Raman spectroscopy (SRS), X-ray photoelectron spectroscopy (XPS), magic angle spinning solid state 13 C NMR (MAS-NMR), and a characterization tool consisting of thermogravimetric analysis coupled with gas chromatography and mass spectrometry (TG-GC-MS) to unambiguously demonstrate the covalent binding and the chemical nature of the different molecular linkers. This work paves the way for the development of smart graphene-based materials of great interest in biomedicine or electronics, to name a few, and will serve as a guide in the design of new 2D multifunctional materials.},
keywords = {carbon materials, diazonium salts, Functionalization, Graphite, I2CT, orthogonal protection, Team-Bianco},
pubstate = {published},
tppubtype = {article}
}
Rauti Rossana, Medelin Manuela, Newman Leon, Vranic Sandra, Reina Giacomo, Bianco Alberto, Prato Maurizio, Kostarelos Kostas, Ballerini Laura
Graphene Oxide Flakes Tune Excitatory Neurotransmission in Vivo by Targeting Hippocampal Synapses Journal Article
In: Nano Letters, vol. 19, no. 5, pp. 2858–2870, 2019, ISSN: 1530-6992.
Abstract | Links | BibTeX | Tags: Animals, Excitatory Amino Acid Agents, glutamate, Glutamic Acid, graphene, Graphite, hippocampal network, Hippocampus, Humans, I2CT, Nanostructures, Neurodegenerative Diseases, Neurons, Newborn, Primary Cell Culture, quantum dots, Rats, synapses, Synaptic Transmission, Team-Bianco, Wistar
@article{rauti_graphene_2019,
title = {Graphene Oxide Flakes Tune Excitatory Neurotransmission in Vivo by Targeting Hippocampal Synapses},
author = {Rossana Rauti and Manuela Medelin and Leon Newman and Sandra Vranic and Giacomo Reina and Alberto Bianco and Maurizio Prato and Kostas Kostarelos and Laura Ballerini},
doi = {10.1021/acs.nanolett.8b04903},
issn = {1530-6992},
year = {2019},
date = {2019-01-01},
journal = {Nano Letters},
volume = {19},
number = {5},
pages = {2858--2870},
abstract = {Synapses compute and transmit information to connect neural circuits and are at the basis of brain operations. Alterations in their function contribute to a vast range of neuropsychiatric and neurodegenerative disorders and synapse-based therapeutic intervention, such as selective inhibition of synaptic transmission, may significantly help against serious pathologies. Graphene is a two-dimensional nanomaterial largely exploited in multiple domains of science and technology, including biomedical applications. In hippocampal neurons in culture, small graphene oxide nanosheets (s-GO) selectively depress glutamatergic activity without altering cell viability. Glutamate is the main excitatory neurotransmitter in the central nervous system and growing evidence suggests its involvement in neuropsychiatric disorders. Here we demonstrate that s-GO directly targets the release of presynaptic vesicle. We propose that s-GO flakes reduce the availability of transmitter, via promoting its fast release and subsequent depletion, leading to a decline ofglutamatergic neurotransmission. We injected s-GO in the hippocampus in vivo, and 48 h after surgery ex vivo patch-clamp recordings from brain slices show a significant reduction in glutamatergic synaptic activity in respect to saline injections.},
keywords = {Animals, Excitatory Amino Acid Agents, glutamate, Glutamic Acid, graphene, Graphite, hippocampal network, Hippocampus, Humans, I2CT, Nanostructures, Neurodegenerative Diseases, Neurons, Newborn, Primary Cell Culture, quantum dots, Rats, synapses, Synaptic Transmission, Team-Bianco, Wistar},
pubstate = {published},
tppubtype = {article}
}
Ji Ding-Kun, Ménard-Moyon Cécilia, Bianco Alberto
Physically-triggered nanosystems based on two-dimensional materials for cancer theranostics Journal Article
In: Advanced Drug Delivery Reviews, vol. 138, pp. 211–232, 2019, ISSN: 1872-8294.
Abstract | Links | BibTeX | Tags: 2D Materials, Animals, Diagnosis, graphene, Graphite, Humans, I2CT, Light, Magnetic Fields, Nanomaterials, Nanostructures, Neoplasms, Team-Bianco, Theragnosis, Theranostic Nanomedicine, therapy
@article{ji_physically-triggered_2019,
title = {Physically-triggered nanosystems based on two-dimensional materials for cancer theranostics},
author = {Ding-Kun Ji and Cécilia Ménard-Moyon and Alberto Bianco},
doi = {10.1016/j.addr.2018.08.010},
issn = {1872-8294},
year = {2019},
date = {2019-01-01},
journal = {Advanced Drug Delivery Reviews},
volume = {138},
pages = {211--232},
abstract = {There is an increasing demand to develop effective methods for treating malignant diseases to improve healthcare in our society. Stimuli-responsive nanosystems, which can respond to internal or external stimuli are promising in cancer therapy and diagnosis due to their functionality and versatility. As a newly emerging class of nanomaterials, two-dimensional (2D) nanomaterials have attracted huge interest in many different fields including biomedicine due to their unique physical and chemical properties. In the past decade, stimuli-responsive nanosystems based on 2D nanomaterials have been widely studied, showing promising applications in cancer therapy and diagnosis, including phototherapies, magnetic therapy, drug and gene delivery, and non-invasive imaging. Here, we will focus our attention on the state-of-the-art of physically-triggered nanosystems based on graphene and two-dimensional nanomaterials for cancer therapy and diagnosis. The physical triggers include light, temperature, magnetic and electric fields.},
keywords = {2D Materials, Animals, Diagnosis, graphene, Graphite, Humans, I2CT, Light, Magnetic Fields, Nanomaterials, Nanostructures, Neoplasms, Team-Bianco, Theragnosis, Theranostic Nanomedicine, therapy},
pubstate = {published},
tppubtype = {article}
}
2018
Fadeel Bengt, Bussy Cyrill, Merino Sonia, Vázquez Ester, Flahaut Emmanuel, Mouchet Florence, Evariste Lauris, Gauthier Laury, Koivisto Antti J, Vogel Ulla, Martín Cristina, Delogu Lucia G, Buerki-Thurnherr Tina, Wick Peter, Beloin-Saint-Pierre Didier, Hischier Roland, Pelin Marco, Carniel Fabio Candotto, Tretiach Mauro, Cesca Fabrizia, Benfenati Fabio, Scaini Denis, Ballerini Laura, Kostarelos Kostas, Prato Maurizio, Bianco Alberto
Safety Assessment of Graphene-Based Materials: Focus on Human Health and the Environment Journal Article
In: ACS nano, vol. 12, no. 11, pp. 10582–10620, 2018, ISSN: 1936-086X.
Abstract | Links | BibTeX | Tags: Animals, carbon nanomaterials, environment, Environmental Monitoring, Exposure, graphene, Graphite, hazard, Health, Humans, I2CT, life cycle assessment, Materials Testing, Nanostructures, Risk Assessment, safety, Structure-Activity Relationship, Team-Bianco, Toxicity
@article{fadeel_safety_2018,
title = {Safety Assessment of Graphene-Based Materials: Focus on Human Health and the Environment},
author = {Bengt Fadeel and Cyrill Bussy and Sonia Merino and Ester Vázquez and Emmanuel Flahaut and Florence Mouchet and Lauris Evariste and Laury Gauthier and Antti J Koivisto and Ulla Vogel and Cristina Martín and Lucia G Delogu and Tina Buerki-Thurnherr and Peter Wick and Didier Beloin-Saint-Pierre and Roland Hischier and Marco Pelin and Fabio Candotto Carniel and Mauro Tretiach and Fabrizia Cesca and Fabio Benfenati and Denis Scaini and Laura Ballerini and Kostas Kostarelos and Maurizio Prato and Alberto Bianco},
doi = {10.1021/acsnano.8b04758},
issn = {1936-086X},
year = {2018},
date = {2018-01-01},
journal = {ACS nano},
volume = {12},
number = {11},
pages = {10582--10620},
abstract = {Graphene and its derivatives are heralded as "miracle" materials with manifold applications in different sectors of society from electronics to energy storage to medicine. The increasing exploitation of graphene-based materials (GBMs) necessitates a comprehensive evaluation of the potential impact of these materials on human health and the environment. Here, we discuss synthesis and characterization of GBMs as well as human and environmental hazard assessment of GBMs using in vitro and in vivo model systems with the aim to understand the properties that underlie the biological effects of these materials; not all GBMs are alike, and it is essential that we disentangle the structure-activity relationships for this class of materials.},
keywords = {Animals, carbon nanomaterials, environment, Environmental Monitoring, Exposure, graphene, Graphite, hazard, Health, Humans, I2CT, life cycle assessment, Materials Testing, Nanostructures, Risk Assessment, safety, Structure-Activity Relationship, Team-Bianco, Toxicity},
pubstate = {published},
tppubtype = {article}
}
Rodrigues Artur Filipe, Newman Leon, Jasim Dhifaf A, Vacchi Isabella A, Ménard-Moyon Cécilia, Crica Livia E, Bianco Alberto, Kostarelos Kostas, Bussy Cyrill
Immunological impact of graphene oxide sheets in the abdominal cavity is governed by surface reactivity Journal Article
In: Archives of Toxicology, vol. 92, no. 11, pp. 3359–3379, 2018, ISSN: 1432-0738.
Abstract | Links | BibTeX | Tags: 2D Materials, Animals, carbon, Epithelium, Female, graphene oxide, Graphite, I2CT, In vivo, Inbred C57BL, inflammation, Intraperitoneal, Macrophages, Mesothelium, Mice, Nanotubes, Peritoneal, Peritoneal Cavity, Protein coating, Team-Bianco, Tissue Distribution, Toxicity
@article{rodrigues_immunological_2018,
title = {Immunological impact of graphene oxide sheets in the abdominal cavity is governed by surface reactivity},
author = {Artur Filipe Rodrigues and Leon Newman and Dhifaf A Jasim and Isabella A Vacchi and Cécilia Ménard-Moyon and Livia E Crica and Alberto Bianco and Kostas Kostarelos and Cyrill Bussy},
doi = {10.1007/s00204-018-2303-z},
issn = {1432-0738},
year = {2018},
date = {2018-01-01},
journal = {Archives of Toxicology},
volume = {92},
number = {11},
pages = {3359--3379},
abstract = {Graphene oxide (GO) is an oxidised form of graphene that has attracted commercial interest in multiple applications, including inks, printed electronics and spray coatings, which all raise health concerns due to potential creation of inhalable aerosols. Although a number of studies have discussed the toxicity of GO sheets, the in vivo impact of their lateral dimensions is still not clear. Here, we compared the effects of large GO sheets (l-GO, 1-20 µm) with those of small GO sheets (s-GO, textbackslashtextless 1 µm) in terms of mesothelial damage and peritoneal inflammation, after intraperitoneal (i.p.) injection in mice. To benchmark the outcomes, long and rigid multi-walled carbon nanotubes (MWCNTs) that were shown to be associated with asbestos-like pathogenicity on the mesothelium were also tested. Our aim was to assess whether lateral dimensions can be a predictor of inflammogenicity for GO sheets in a similar fashion as length is for MWCNTs. While long MWCNTs dispersed in 0.5% BSA induced a granulomatous response on the diaphragmatic mesothelium and immune cell recruitment to the peritoneal cavity, GO sheets dispersed under similar conditions did not cause any response, regardless of their lateral dimensions. We further interrogated whether tuning the surface reactivity of GO by testing different dispersions (5% dextrose instead of 0.5% BSA) may change the biological outcome. Although the change of dispersion did not alter the impact of GO on the mesothelium (i.e. no granuloma), we observed that, when dispersed in protein-free 5% dextrose solution, s-GO elicited a greater recruitment of monocytic cells to the peritoneal cavity than l-GO, or when dispersed in protein-containing solution. Such recruitment coincided with the greater ability of s-GO to interact in vivo with peritoneal macrophages and was associated with a greater surface reactivity in comparison to l-GO. In conclusion, large dimension was not a determining factor of the immunological impact of GO sheets after i.p. administration. For an equal dose, GO sheets with lateral dimensions similar to the length of long MWCNTs were less pathogenic than the MWCNTs. On the other hand, surface reactivity and the ability of some smaller GO sheets to interact more readily with immune cells seem to be key parameters that can be tuned to improve the safety profile of GO. In particular, the choice of dispersion modality, which affected these two parameters, was found to be of crucial importance in the assessment of GO impact in this model. Overall, these findings are essential for a better understanding of the parameters governing GO toxicity and inflammation, and the rational design of safe GO-based formulations for various applications, including biomedicine.},
keywords = {2D Materials, Animals, carbon, Epithelium, Female, graphene oxide, Graphite, I2CT, In vivo, Inbred C57BL, inflammation, Intraperitoneal, Macrophages, Mesothelium, Mice, Nanotubes, Peritoneal, Peritoneal Cavity, Protein coating, Team-Bianco, Tissue Distribution, Toxicity},
pubstate = {published},
tppubtype = {article}
}
2017
Russier Julie, León Verónica, Orecchioni Marco, Hirata Eri, Virdis Patrizia, Fozza Claudio, Sgarrella Francesco, Cuniberti Gianaurelio, Prato Maurizio, Vázquez Ester, Bianco Alberto, Delogu Lucia G
Few-Layer Graphene Kills Selectively Tumor Cells from Myelomonocytic Leukemia Patients Journal Article
In: Angewandte Chemie (International Ed. in English), vol. 56, no. 11, pp. 3014–3019, 2017, ISSN: 1521-3773.
Abstract | Links | BibTeX | Tags: Acute, cancer therapy, Chronic, Cultured, graphene, Graphite, Humans, I2CT, Immune System, leukemia, Leukocytes, Mononuclear, Myeloid, Myelomonocytic, myelomonocytic leukemia, Nanomaterials, Particle Size, Surface Properties, Team-Bianco, Tumor Cells
@article{russier_few-layer_2017,
title = {Few-Layer Graphene Kills Selectively Tumor Cells from Myelomonocytic Leukemia Patients},
author = {Julie Russier and Verónica León and Marco Orecchioni and Eri Hirata and Patrizia Virdis and Claudio Fozza and Francesco Sgarrella and Gianaurelio Cuniberti and Maurizio Prato and Ester Vázquez and Alberto Bianco and Lucia G Delogu},
doi = {10.1002/anie.201700078},
issn = {1521-3773},
year = {2017},
date = {2017-01-01},
journal = {Angewandte Chemie (International Ed. in English)},
volume = {56},
number = {11},
pages = {3014--3019},
abstract = {In the cure of cancer, a major cause of today's mortality, chemotherapy is the most common treatment, though serious frequent challenges are encountered by current anticancer drugs. We discovered that few-layer graphene (FLG) dispersions have a specific killer action on monocytes, showing neither toxic nor activation effects on other immune cells. We confirmed the therapeutic application of graphene on an aggressive type of cancer that is myelomonocytic leukemia, where the monocytes are in their malignant form. We demonstrated that graphene has the unique ability to target and boost specifically the necrosis of monocytic cancer cells. Moreover, the comparison between FLG and a common chemotherapeutic drug, etoposide, confirmed the higher specificity and toxicity of FLG. Since current chemotherapy treatments of leukemia still cause serious problems, these findings open the way to new and safer therapeutic approaches.},
keywords = {Acute, cancer therapy, Chronic, Cultured, graphene, Graphite, Humans, I2CT, Immune System, leukemia, Leukocytes, Mononuclear, Myeloid, Myelomonocytic, myelomonocytic leukemia, Nanomaterials, Particle Size, Surface Properties, Team-Bianco, Tumor Cells},
pubstate = {published},
tppubtype = {article}
}
2014
Servant A, Bianco A, Prato M, Kostarelos K
Graphene for multi-functional synthetic biology: the last 'zeitgeist' in nanomedicine Journal Article
In: Bioorganic & Medicinal Chemistry Letters, vol. 24, no. 7, pp. 1638–1649, 2014, ISSN: 1464-3405.
Abstract | Links | BibTeX | Tags: Antineoplastic Agents, carbon, Drug delivery, Drug Design, Graphite, I2CT, Nanomaterials, Nanomedicine, nanotechnology, Synthetic Biology, Team-Bianco
@article{servant_graphene_2014,
title = {Graphene for multi-functional synthetic biology: the last 'zeitgeist' in nanomedicine},
author = {A Servant and A Bianco and M Prato and K Kostarelos},
doi = {10.1016/j.bmcl.2014.01.051},
issn = {1464-3405},
year = {2014},
date = {2014-01-01},
journal = {Bioorganic & Medicinal Chemistry Letters},
volume = {24},
number = {7},
pages = {1638--1649},
abstract = {The high versatility of graphene has attracted significant attention in many areas of scientific research from electronics to physics and mechanics. One of the most intriguing utilisation of graphene remains however in nanomedicine and synthetic biology. In particular, the last decade has witnessed an exponential growth in the generation of novel candidate therapeutics of multiple biological activities based on graphene constructs with small molecules, such as anti-cancer drugs. In this Digest, we summarise the different synthetic strategies and routes available to fabricate these promising graphene conjugates and the opportunities for the design of multi-functional tools for synthetic biology that they offer.},
keywords = {Antineoplastic Agents, carbon, Drug delivery, Drug Design, Graphite, I2CT, Nanomaterials, Nanomedicine, nanotechnology, Synthetic Biology, Team-Bianco},
pubstate = {published},
tppubtype = {article}
}
2013
Russier Julie, Treossi Emanuele, Scarsi Alessia, Perrozzi Francesco, Dumortier Hélène, Ottaviano Luca, Meneghetti Moreno, Palermo Vincenzo, Bianco Alberto
Evidencing the mask effect of graphene oxide: a comparative study on primary human and murine phagocytic cells Journal Article
In: Nanoscale, vol. 5, no. 22, pp. 11234–11247, 2013, ISSN: 2040-3372.
Abstract | Links | BibTeX | Tags: Animals, Cell Survival, Cells, Cultured, Cytokines, Dumortier, Graphite, Humans, I2CT, Macrophages, Mice, Monocytes, Oxidative Stress, Oxides, Reactive Oxygen Species, Team-Bianco, Team-Dumortier
@article{russier_evidencing_2013,
title = {Evidencing the mask effect of graphene oxide: a comparative study on primary human and murine phagocytic cells},
author = {Julie Russier and Emanuele Treossi and Alessia Scarsi and Francesco Perrozzi and Hélène Dumortier and Luca Ottaviano and Moreno Meneghetti and Vincenzo Palermo and Alberto Bianco},
doi = {10.1039/c3nr03543c},
issn = {2040-3372},
year = {2013},
date = {2013-01-01},
journal = {Nanoscale},
volume = {5},
number = {22},
pages = {11234--11247},
abstract = {Graphene oxide (GO) is attracting an ever-growing interest in different fields and applications. Not much is known about the possible impact of GO sheet lateral dimensions on their effects in vitro, especially on human primary cells. In an attempt to address this issue, we present a study to evaluate, how highly soluble 2-dimensional GO constituted of large or small flakes affects human monocyte derived macrophages (hMDM). For this purpose, the lateral size of GO was tuned using sonication and three samples were obtained. The non sonicated one presented large flakes (textasciitilde1.32 μm) while sonication for 2 and 26 hours generated small (textasciitilde0.27 μm) and very small (textasciitilde0.13 μm) sheets of GO, respectively. Cell studies were then conducted to evaluate the cytotoxicity, the oxidative stress induction, the activation potential and the pro-inflammatory effects of these different types of GO at increasing concentrations. In comparison, the same experiments were run on murine intraperitoneal macrophages (mIPM). The interaction between GO and cells was further examined by TEM and Raman spectroscopy. Our data revealed that the GO sheet size had a significant impact on different cellular parameters (i.e. cellular viability, ROS generation, and cellular activation). Indeed, the more the lateral dimensions of GO were reduced, the higher were the cellular internalization and the effects on cellular functionality. Our data also revealed a particular interaction of GO flakes with the cellular membrane. In fact, a GO mask due to the parallel arrangement of the graphene sheets on the cellular surface was observed. Considering the mask effect, we have hypothesized that this particular contact between GO sheets and the cell membrane could either promote their internalization or isolate cells from their environment, thus possibly accounting for the following impact on cellular parameters.},
keywords = {Animals, Cell Survival, Cells, Cultured, Cytokines, Dumortier, Graphite, Humans, I2CT, Macrophages, Mice, Monocytes, Oxidative Stress, Oxides, Reactive Oxygen Species, Team-Bianco, Team-Dumortier},
pubstate = {published},
tppubtype = {article}
}
2009
Singh Prabhpreet, Kumar Jitendra, Toma Francesca Maria, Raya Jesus, Prato Maurizio, Fabre Bruno, Verma Sandeep, Bianco Alberto
Synthesis and characterization of nucleobase-carbon nanotube hybrids Journal Article
In: Journal of the American Chemical Society, vol. 131, no. 37, pp. 13555–13562, 2009, ISSN: 1520-5126.
Abstract | Links | BibTeX | Tags: Adenine, Amides, Amines, Biosensing Techniques, carbon, Catalysis, Electrochemistry, Graphite, I2CT, Magnetic Resonance Spectroscopy, Nanotubes, Nanowires, Surface Properties, Team-Bianco
@article{singh_synthesis_2009,
title = {Synthesis and characterization of nucleobase-carbon nanotube hybrids},
author = {Prabhpreet Singh and Jitendra Kumar and Francesca Maria Toma and Jesus Raya and Maurizio Prato and Bruno Fabre and Sandeep Verma and Alberto Bianco},
doi = {10.1021/ja905041b},
issn = {1520-5126},
year = {2009},
date = {2009-09-01},
journal = {Journal of the American Chemical Society},
volume = {131},
number = {37},
pages = {13555--13562},
abstract = {We report the synthesis and characterization of adenine-single-walled carbon nanotube (SWCNT) hybrid materials, where for the first time nucleobases are covalently attached to the exosurface of SWCNTs. The structural properties of all hybrids have been characterized using usual spectroscopic and microscopic techniques. The degree of functional groups for functionalized SWCNTs (f-SWCNTs) 2a and 2b is one adenine group for each 26 and 37 carbon atoms, respectively. Solid-state magic angle spinning (13)C NMR spectroscopy (MAS NMR) and electrochemistry have been also applied for the characterization of these f-SWCNTs. AFM images of f-SWCNT 2b showed an interesting feature of horizontally aligned nanotubes along the surface when deposited on highly oriented pyrolytic graphite surface. Furthermore, we evaluated the coordinating ability of these hybrid materials toward silver ions, and interestingly, we found a pattern of silver nanoparticles localized over the surface of the carbon nanotube network. The presence of aligned and randomly oriented CNTs and their ability to coordinate with metal ions make this class of materials very interesting for applications in the development of novel electronic devices and as new supports for different catalytic transformations.},
keywords = {Adenine, Amides, Amines, Biosensing Techniques, carbon, Catalysis, Electrochemistry, Graphite, I2CT, Magnetic Resonance Spectroscopy, Nanotubes, Nanowires, Surface Properties, Team-Bianco},
pubstate = {published},
tppubtype = {article}
}
Bianco Alberto
Potential usefulness of carbon nanotubes for cancer therapy Journal Article
In: Medecine Sciences: M/S, vol. 25, no. 2, pp. 125–127, 2009, ISSN: 0767-0974.
Links | BibTeX | Tags: carbon, Graphite, Humans, I2CT, Nanotubes, Neoplasms, Team-Bianco
@article{bianco_potential_2009,
title = {Potential usefulness of carbon nanotubes for cancer therapy},
author = {Alberto Bianco},
doi = {10.1051/medsci/2009252125},
issn = {0767-0974},
year = {2009},
date = {2009-02-01},
journal = {Medecine Sciences: M/S},
volume = {25},
number = {2},
pages = {125--127},
keywords = {carbon, Graphite, Humans, I2CT, Nanotubes, Neoplasms, Team-Bianco},
pubstate = {published},
tppubtype = {article}
}