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2018
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 Article de journal
Dans: Archives of Toxicology, vol. 92, no. 11, p. 3359–3379, 2018, ISSN: 1432-0738.
Résumé | Liens | BibTeX | Étiquettes: 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}
}
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.
2016
Lee Kwang-Zin, Lestradet Matthieu, Socha Catherine, Schirmeier Stefanie, Schmitz Antonin, Spenlé Caroline, Lefebvre Olivier, Keime Céline, Yamba Wennida M., Bou Aoun Richard, Liegeois Samuel, Schwab Yannick, Simon-Assmann Patricia, Dalle Frédéric, Ferrandon Dominique
Enterocyte Purge and Rapid Recovery Is a Resilience Reaction of the Gut Epithelium to Pore-Forming Toxin Attack Article de journal
Dans: Cell Host & Microbe, 2016, ISSN: 1931-3128.
Résumé | Liens | BibTeX | Étiquettes: Epithelium, ferrandon, gut, M3i, resilience
@article{Lee2016,
title = {Enterocyte Purge and Rapid Recovery Is a Resilience Reaction of the Gut Epithelium to Pore-Forming Toxin Attack},
author = {Kwang-Zin Lee and Matthieu Lestradet and Catherine Socha and Stefanie Schirmeier and Antonin Schmitz and Caroline Spenlé and Olivier Lefebvre and Céline Keime and Wennida M. Yamba and Richard Bou Aoun and Samuel Liegeois and Yannick Schwab and Patricia Simon-Assmann and Frédéric Dalle and Dominique Ferrandon},
editor = {L Abate},
url = {http://www.sciencedirect.com/science/article/pii/S193131281630436X},
doi = {10.1016/j.chom.2016.10.010},
issn = {1931-3128},
year = {2016},
date = {2016-11-23},
urldate = {2016-11-25},
journal = {Cell Host & Microbe},
abstract = {Summary
Besides digesting nutrients, the gut protects the host against invasion by pathogens. Enterocytes may be subjected to damage by both microbial and host defensive responses, causing their death. Here, we report a rapid epithelial response that alleviates infection stress and protects the enterocytes from the action of microbial virulence factors. Intestinal epithelia exposed to hemolysin, a pore-forming toxin secreted by Serratia marcescens, undergo an evolutionarily conserved process of thinning followed by the recovery of their initial thickness within a few hours. In response to hemolysin attack, Drosophila melanogaster enterocytes extrude most of their apical cytoplasm, including damaged organelles such as mitochondria, yet do not lyse. We identify two secreted peptides, the expression of which requires CyclinJ, that mediate the recovery phase in which enterocytes regain their original shape and volume. Epithelial thinning and recovery constitute a fast and efficient response to intestinal infections, with pore-forming toxins acting as alarm signals.},
keywords = {Epithelium, ferrandon, gut, M3i, resilience},
pubstate = {published},
tppubtype = {article}
}
Summary
Besides digesting nutrients, the gut protects the host against invasion by pathogens. Enterocytes may be subjected to damage by both microbial and host defensive responses, causing their death. Here, we report a rapid epithelial response that alleviates infection stress and protects the enterocytes from the action of microbial virulence factors. Intestinal epithelia exposed to hemolysin, a pore-forming toxin secreted by Serratia marcescens, undergo an evolutionarily conserved process of thinning followed by the recovery of their initial thickness within a few hours. In response to hemolysin attack, Drosophila melanogaster enterocytes extrude most of their apical cytoplasm, including damaged organelles such as mitochondria, yet do not lyse. We identify two secreted peptides, the expression of which requires CyclinJ, that mediate the recovery phase in which enterocytes regain their original shape and volume. Epithelial thinning and recovery constitute a fast and efficient response to intestinal infections, with pore-forming toxins acting as alarm signals.
Besides digesting nutrients, the gut protects the host against invasion by pathogens. Enterocytes may be subjected to damage by both microbial and host defensive responses, causing their death. Here, we report a rapid epithelial response that alleviates infection stress and protects the enterocytes from the action of microbial virulence factors. Intestinal epithelia exposed to hemolysin, a pore-forming toxin secreted by Serratia marcescens, undergo an evolutionarily conserved process of thinning followed by the recovery of their initial thickness within a few hours. In response to hemolysin attack, Drosophila melanogaster enterocytes extrude most of their apical cytoplasm, including damaged organelles such as mitochondria, yet do not lyse. We identify two secreted peptides, the expression of which requires CyclinJ, that mediate the recovery phase in which enterocytes regain their original shape and volume. Epithelial thinning and recovery constitute a fast and efficient response to intestinal infections, with pore-forming toxins acting as alarm signals.
2011
Murphy Fiona A, Poland Craig A, Duffin Rodger, Al-Jamal Khuloud T, Ali-Boucetta Hanene, Nunes Antonio, Byrne Fiona, Prina-Mello Adriele, Volkov Yuri, Li Shouping, Mather Stephen J, Bianco Alberto, Prato Maurizio, Macnee William, Wallace William A, Kostarelos Kostas, Donaldson Ken
Length-dependent retention of carbon nanotubes in the pleural space of mice initiates sustained inflammation and progressive fibrosis on the parietal pleura Article de journal
Dans: The American Journal of Pathology, vol. 178, no. 6, p. 2587–2600, 2011, ISSN: 1525-2191.
Résumé | Liens | BibTeX | Étiquettes: Animals, carbon, Cell Proliferation, Disease Progression, Emission-Computed, Epithelium, Fibrosis, I2CT, inflammation, Lymph Nodes, Mediastinum, Mice, Nanotubes, Nanowires, Particle Size, Pleura, Pleural Cavity, Single-Photon, Team-Bianco, Time Factors, Tomography, X-Ray Computed
@article{murphy_length-dependent_2011,
title = {Length-dependent retention of carbon nanotubes in the pleural space of mice initiates sustained inflammation and progressive fibrosis on the parietal pleura},
author = {Fiona A Murphy and Craig A Poland and Rodger Duffin and Khuloud T Al-Jamal and Hanene Ali-Boucetta and Antonio Nunes and Fiona Byrne and Adriele Prina-Mello and Yuri Volkov and Shouping Li and Stephen J Mather and Alberto Bianco and Maurizio Prato and William Macnee and William A Wallace and Kostas Kostarelos and Ken Donaldson},
doi = {10.1016/j.ajpath.2011.02.040},
issn = {1525-2191},
year = {2011},
date = {2011-06-01},
journal = {The American Journal of Pathology},
volume = {178},
number = {6},
pages = {2587--2600},
abstract = {The fibrous shape of carbon nanotubes (CNTs) raises concern that they may pose an asbestos-like inhalation hazard, leading to the development of diseases, especially mesothelioma. Direct instillation of long and short CNTs into the pleural cavity, the site of mesothelioma development, produced asbestos-like length-dependent responses. The response to long CNTs and long asbestos was characterized by acute inflammation, leading to progressive fibrosis on the parietal pleura, where stomata of strictly defined size limit the egress of long, but not short, fibers. This was confirmed by demonstrating clearance of short, but not long, CNT and nickel nanowires and by visualizing the migration of short CNTs from the pleural space by single-photon emission computed tomographic imaging. Our data confirm the hypothesis that, although a proportion of all deposited particles passes through the pleura, the pathogenicity of long CNTs and other fibers arises as a result of length-dependent retention at the stomata on the parietal pleura.},
keywords = {Animals, carbon, Cell Proliferation, Disease Progression, Emission-Computed, Epithelium, Fibrosis, I2CT, inflammation, Lymph Nodes, Mediastinum, Mice, Nanotubes, Nanowires, Particle Size, Pleura, Pleural Cavity, Single-Photon, Team-Bianco, Time Factors, Tomography, X-Ray Computed},
pubstate = {published},
tppubtype = {article}
}
The fibrous shape of carbon nanotubes (CNTs) raises concern that they may pose an asbestos-like inhalation hazard, leading to the development of diseases, especially mesothelioma. Direct instillation of long and short CNTs into the pleural cavity, the site of mesothelioma development, produced asbestos-like length-dependent responses. The response to long CNTs and long asbestos was characterized by acute inflammation, leading to progressive fibrosis on the parietal pleura, where stomata of strictly defined size limit the egress of long, but not short, fibers. This was confirmed by demonstrating clearance of short, but not long, CNT and nickel nanowires and by visualizing the migration of short CNTs from the pleural space by single-photon emission computed tomographic imaging. Our data confirm the hypothesis that, although a proportion of all deposited particles passes through the pleura, the pathogenicity of long CNTs and other fibers arises as a result of length-dependent retention at the stomata on the parietal pleura.
2008
Romani N, Ebner S, Flacher V, Tripp C H, Heufler C, Clausen B E, Stoitzner P
Langerhans cells - dendritic cells of the epidermis and other epithelia Recueil
Dans: Saeland, S (Ed.): Recent Advances in Skin Immunology, Research Signpost, Trivandrum, Kerala, India, 2008.
Résumé | BibTeX | Étiquettes: BLOOD, Dendritic Cells, Epidermis, Epithelium, function, Immune System, Immunology, In vivo, Langerhans Cells, Skin, Team-Mueller
@incollection{romani_langerhans_2008,
title = {Langerhans cells - dendritic cells of the epidermis and other epithelia},
author = {N Romani and S Ebner and V Flacher and C H Tripp and C Heufler and B E Clausen and P Stoitzner},
editor = {S Saeland},
year = {2008},
date = {2008-01-01},
booktitle = {Recent Advances in Skin Immunology},
publisher = {Research Signpost},
address = {Trivandrum, Kerala, India},
abstract = {Langerhans cells are dendritic cells that reside in epithelia, formeost in the epidermis. Like dendritic cells from non-epithelial tissues or from the blood, they form a functional bridge between the innate and the adaptive immune system. Although Langerhans cells have first been described 140 years ago, only recently has a lively scientific debate arisen as to their functional role in vivo, i.e., in the living organism. This is mainly due to the advent of modern, sophisticated experimental models that allow to tackle hitherto unaddressed problems. It is not yet entirely clear whether an immunogenic or a tolerogenic function of Langerhans cells prevails in vivo. Here, we attempt to summarize and discuss the current knowledge on the immunobiology of Langerhans cells with emphasis on their role in vivo.},
keywords = {BLOOD, Dendritic Cells, Epidermis, Epithelium, function, Immune System, Immunology, In vivo, Langerhans Cells, Skin, Team-Mueller},
pubstate = {published},
tppubtype = {incollection}
}
Langerhans cells are dendritic cells that reside in epithelia, formeost in the epidermis. Like dendritic cells from non-epithelial tissues or from the blood, they form a functional bridge between the innate and the adaptive immune system. Although Langerhans cells have first been described 140 years ago, only recently has a lively scientific debate arisen as to their functional role in vivo, i.e., in the living organism. This is mainly due to the advent of modern, sophisticated experimental models that allow to tackle hitherto unaddressed problems. It is not yet entirely clear whether an immunogenic or a tolerogenic function of Langerhans cells prevails in vivo. Here, we attempt to summarize and discuss the current knowledge on the immunobiology of Langerhans cells with emphasis on their role in vivo.
1998
Ferrandon Dominique, Jung Alain C, Criqui M, Lemaitre Bruno, Uttenweiler-Joseph S, Michaut Lydia, Reichhart Jean-Marc, Hoffmann Jules A
A drosomycin-GFP reporter transgene reveals a local immune response in Drosophila that is not dependent on the Toll pathway Article de journal
Dans: EMBO J., vol. 17, no. 5, p. 1217–1227, 1998, ISSN: 0261-4189.
Résumé | Liens | BibTeX | Étiquettes: Animals, bacteria, Cell Surface, Developmental, Digestive System, Epithelium, Fat Body, Female, ferrandon, Fungal, Gene Expression Regulation, Genes, Green Fluorescent Proteins, hoffmann, Insect Proteins, Larva, Luminescent Proteins, M3i, Male, Membrane Glycoproteins, Organ Specificity, Receptors, reichhart, Reporter, Respiratory System, Spores, Toll-Like Receptors, Trachea, Transgenes
@article{ferrandon_drosomycin-gfp_1998,
title = {A drosomycin-GFP reporter transgene reveals a local immune response in Drosophila that is not dependent on the Toll pathway},
author = {Dominique Ferrandon and Alain C Jung and M Criqui and Bruno Lemaitre and S Uttenweiler-Joseph and Lydia Michaut and Jean-Marc Reichhart and Jules A Hoffmann},
doi = {10.1093/emboj/17.5.1217},
issn = {0261-4189},
year = {1998},
date = {1998-08-01},
journal = {EMBO J.},
volume = {17},
number = {5},
pages = {1217--1227},
abstract = {A hallmark of the systemic antimicrobial response of Drosophila is the synthesis by the fat body of several antimicrobial peptides which are released into the hemolymph in response to a septic injury. One of these peptides, drosomycin, is active primarily against fungi. Using a drosomycin-green fluorescent protein (GFP) reporter gene, we now show that in addition to the fat body, a variety of epithelial tissues that are in direct contact with the external environment, including those of the respiratory, digestive and reproductive tracts, can express the antifungal peptide, suggesting a local response to infections affecting these barrier tissues. As is the case for vertebrate epithelia, insect epithelia appear to be more than passive physical barriers and are likely to constitute an active component of innate immunity. We also show that, in contrast to the systemic antifungal response, this local immune response is independent of the Toll pathway.},
keywords = {Animals, bacteria, Cell Surface, Developmental, Digestive System, Epithelium, Fat Body, Female, ferrandon, Fungal, Gene Expression Regulation, Genes, Green Fluorescent Proteins, hoffmann, Insect Proteins, Larva, Luminescent Proteins, M3i, Male, Membrane Glycoproteins, Organ Specificity, Receptors, reichhart, Reporter, Respiratory System, Spores, Toll-Like Receptors, Trachea, Transgenes},
pubstate = {published},
tppubtype = {article}
}
A hallmark of the systemic antimicrobial response of Drosophila is the synthesis by the fat body of several antimicrobial peptides which are released into the hemolymph in response to a septic injury. One of these peptides, drosomycin, is active primarily against fungi. Using a drosomycin-green fluorescent protein (GFP) reporter gene, we now show that in addition to the fat body, a variety of epithelial tissues that are in direct contact with the external environment, including those of the respiratory, digestive and reproductive tracts, can express the antifungal peptide, suggesting a local response to infections affecting these barrier tissues. As is the case for vertebrate epithelia, insect epithelia appear to be more than passive physical barriers and are likely to constitute an active component of innate immunity. We also show that, in contrast to the systemic antifungal response, this local immune response is independent of the Toll pathway.
1978
Goltzené F, Lagueux Marie, Charlet Maurice, Hoffmann Jules A
The follicle cell epithelium of maturing ovaries of Locusta migratoria: a new biosynthetic tissue for ecdysone Article de journal
Dans: Hoppe-Seyler's Z. Physiol. Chem., vol. 359, no. 10, p. 1427–1434, 1978, ISSN: 0018-4888.
Résumé | BibTeX | Étiquettes: Animals, Ecdysone, Epithelium, Female, Grasshoppers, hoffmann, Kinetics, M3i, Oocytes, Ovarian Follicle, Ovary, Sexual Maturation
@article{goltzene_follicle_1978,
title = {The follicle cell epithelium of maturing ovaries of Locusta migratoria: a new biosynthetic tissue for ecdysone},
author = {F Goltzené and Marie Lagueux and Maurice Charlet and Jules A Hoffmann},
issn = {0018-4888},
year = {1978},
date = {1978-10-01},
journal = {Hoppe-Seyler's Z. Physiol. Chem.},
volume = {359},
number = {10},
pages = {1427--1434},
abstract = {Follicle cells of maturing ovaries of Locusta migratoria are demonstrated to synthesize the moulting hormone ecdysone (2beta,3beta,14alpha,22R,25-pentahydroxy-5beta-cholest-7-en-6-one). Studies of secretory kinetics under in vitro conditions show that the intensity of hormone secretion is strictly dependent on the stage of maturation of the excised ovaries.},
keywords = {Animals, Ecdysone, Epithelium, Female, Grasshoppers, hoffmann, Kinetics, M3i, Oocytes, Ovarian Follicle, Ovary, Sexual Maturation},
pubstate = {published},
tppubtype = {article}
}
Follicle cells of maturing ovaries of Locusta migratoria are demonstrated to synthesize the moulting hormone ecdysone (2beta,3beta,14alpha,22R,25-pentahydroxy-5beta-cholest-7-en-6-one). Studies of secretory kinetics under in vitro conditions show that the intensity of hormone secretion is strictly dependent on the stage of maturation of the excised ovaries.
