1
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Lin H, Buerki-Thurnherr T, Kaur J, Wick P, Pelin M, Tubaro A, Carniel FC, Tretiach M, Flahaut E, Iglesias D, Vázquez E, Cellot G, Ballerini L, Castagnola V, Benfenati F, Armirotti A, Sallustrau A, Taran F, Keck M, Bussy C, Vranic S, Kostarelos K, Connolly M, Navas JM, Mouchet F, Gauthier L, Baker J, Suarez-Merino B, Kanerva T, Prato M, Fadeel B, Bianco A. Environmental and Health Impacts of Graphene and Other Two-Dimensional Materials: A Graphene Flagship Perspective. ACS Nano 2024; 18:6038-6094. [PMID: 38350010 PMCID: PMC10906101 DOI: 10.1021/acsnano.3c09699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 02/15/2024]
Abstract
Two-dimensional (2D) materials have attracted tremendous interest ever since the isolation of atomically thin sheets of graphene in 2004 due to the specific and versatile properties of these materials. However, the increasing production and use of 2D materials necessitate a thorough evaluation of the potential impact on human health and the environment. Furthermore, harmonized test protocols are needed with which to assess the safety of 2D materials. The Graphene Flagship project (2013-2023), funded by the European Commission, addressed the identification of the possible hazard of graphene-based materials as well as emerging 2D materials including transition metal dichalcogenides, hexagonal boron nitride, and others. Additionally, so-called green chemistry approaches were explored to achieve the goal of a safe and sustainable production and use of this fascinating family of nanomaterials. The present review provides a compact survey of the findings and the lessons learned in the Graphene Flagship.
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Affiliation(s)
- Hazel Lin
- CNRS,
UPR3572, Immunology, Immunopathology and Therapeutic Chemistry, ISIS, University of Strasbourg, 67000 Strasbourg, France
| | - Tina Buerki-Thurnherr
- Empa,
Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Particles-Biology Interactions, 9014 St. Gallen, Switzerland
| | - Jasreen Kaur
- Nanosafety
& Nanomedicine Laboratory, Institute
of Environmental Medicine, Karolinska Institutet, 177 77 Stockholm, Sweden
| | - Peter Wick
- Empa,
Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Particles-Biology Interactions, 9014 St. Gallen, Switzerland
| | - Marco Pelin
- Department
of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Aurelia Tubaro
- Department
of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | | | - Mauro Tretiach
- Department
of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Emmanuel Flahaut
- CIRIMAT,
Université de Toulouse, CNRS, INPT,
UPS, 31062 Toulouse CEDEX 9, France
| | - Daniel Iglesias
- Facultad
de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain
- Instituto
Regional de Investigación Científica Aplicada (IRICA), Universidad de Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain
| | - Ester Vázquez
- Facultad
de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain
- Instituto
Regional de Investigación Científica Aplicada (IRICA), Universidad de Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain
| | - Giada Cellot
- International
School for Advanced Studies (SISSA), 34136 Trieste, Italy
| | - Laura Ballerini
- International
School for Advanced Studies (SISSA), 34136 Trieste, Italy
| | - Valentina Castagnola
- Center
for
Synaptic Neuroscience and Technology, Istituto
Italiano di Tecnologia, 16132 Genova, Italy
- IRCCS
Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Fabio Benfenati
- Center
for
Synaptic Neuroscience and Technology, Istituto
Italiano di Tecnologia, 16132 Genova, Italy
- IRCCS
Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Andrea Armirotti
- Analytical
Chemistry Facility, Istituto Italiano di
Tecnologia, 16163 Genoa, Italy
| | - Antoine Sallustrau
- Département
Médicaments et Technologies pour la Santé (DMTS), Université Paris-Saclay, CEA, INRAE, SIMoS, Gif-sur-Yvette 91191, France
| | - Frédéric Taran
- Département
Médicaments et Technologies pour la Santé (DMTS), Université Paris-Saclay, CEA, INRAE, SIMoS, Gif-sur-Yvette 91191, France
| | - Mathilde Keck
- Département
Médicaments et Technologies pour la Santé (DMTS), Université Paris-Saclay, CEA, INRAE, SIMoS, Gif-sur-Yvette 91191, France
| | - Cyrill Bussy
- Nanomedicine
Lab, Faculty of Biology, Medicine and Health, University of Manchester,
Manchester Academic Health Science Centre, National Graphene Institute, Manchester M13 9PT, United
Kingdom
| | - Sandra Vranic
- Nanomedicine
Lab, Faculty of Biology, Medicine and Health, University of Manchester,
Manchester Academic Health Science Centre, National Graphene Institute, Manchester M13 9PT, United
Kingdom
| | - Kostas Kostarelos
- Nanomedicine
Lab, Faculty of Biology, Medicine and Health, University of Manchester,
Manchester Academic Health Science Centre, National Graphene Institute, Manchester M13 9PT, United
Kingdom
| | - Mona Connolly
- Instituto Nacional de Investigación y Tecnología
Agraria
y Alimentaria (INIA), CSIC, Carretera de la Coruña Km 7,5, E-28040 Madrid, Spain
| | - José Maria Navas
- Instituto Nacional de Investigación y Tecnología
Agraria
y Alimentaria (INIA), CSIC, Carretera de la Coruña Km 7,5, E-28040 Madrid, Spain
| | - Florence Mouchet
- Laboratoire
Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, INPT, UPS, 31000 Toulouse, France
| | - Laury Gauthier
- Laboratoire
Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, INPT, UPS, 31000 Toulouse, France
| | - James Baker
- TEMAS Solutions GmbH, 5212 Hausen, Switzerland
| | | | - Tomi Kanerva
- Finnish Institute of Occupational Health, 00250 Helsinki, Finland
| | - Maurizio Prato
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San
Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
- Department
of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy
| | - Bengt Fadeel
- Nanosafety
& Nanomedicine Laboratory, Institute
of Environmental Medicine, Karolinska Institutet, 177 77 Stockholm, Sweden
| | - Alberto Bianco
- CNRS,
UPR3572, Immunology, Immunopathology and Therapeutic Chemistry, ISIS, University of Strasbourg, 67000 Strasbourg, France
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2
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Chudziak T, Montes-García V, Czepa W, Pakulski D, Musiał A, Valentini C, Bielejewski M, Carlin M, Tubaro A, Pelin M, Samorì P, Ciesielski A. A comparative investigation of the chemical reduction of graphene oxide for electrical engineering applications. Nanoscale 2023; 15:17765-17775. [PMID: 37882733 PMCID: PMC10653029 DOI: 10.1039/d3nr04521h] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 10/19/2023] [Indexed: 10/27/2023]
Abstract
The presence of oxygen-containing functional groups on the basal plane and at the edges endows graphene oxide (GO) with an insulating nature, which makes it rather unsuitable for electronic applications. Fortunately, the reduction process makes it possible to restore the sp2 conjugation. Among various protocols, chemical reduction is appealing because of its compatibility with large-scale production. Nevertheless, despite the vast number of reported chemical protocols, their comparative assessment has not yet been the subject of an in-depth investigation, rendering the establishment of a structure-performance relationship impossible. We report a systematic study on the chemical reduction of GO by exploring different reducing agents (hydrazine hydrate, sodium borohydride, ascorbic acid (AA), and sodium dithionite) and reaction times (2 or 12 hours) in order to boost the performance of chemically reduced GO (CrGO) in electronics and in electrochemical applications. In this work, we provide evidence that the optimal reduction conditions should vary depending on the chosen application, whether it is for electrical or electrochemical purposes. CrGO exhibiting a good electrical conductivity (>1800 S m-1) can be obtained by using AA (12 hours of reaction), Na2S2O4 and N2H4 (independent of the reaction time). Conversely, CrGO displaying a superior electrochemical performance (specific capacitance of 211 F g-1, and capacitance retention >99.5% after 2000 cycles) can be obtained by using NaBH4 (12 hours of reaction). Finally, the compatibility of the different CrGOs with wearable and flexible electronics is also demonstrated using skin irritation tests. The strategy described represents a significant advancement towards the development of environmentally friendly CrGOs with ad hoc properties for advanced applications in electronics and energy storage.
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Affiliation(s)
- Tomasz Chudziak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, Poznań, Poland.
| | - Verónica Montes-García
- University of Strasbourg CNRS ISIS UMR 7006, 8 Alleé Gaspard Monge, F-67000 Strasbourg, France.
| | - Włodzimierz Czepa
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, Poznań, Poland.
| | - Dawid Pakulski
- Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, Poznań, Poland.
| | - Andrzej Musiał
- Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, Poznań, Poland.
- Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
| | - Cataldo Valentini
- Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, Poznań, Poland.
| | - Michał Bielejewski
- Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
| | - Michela Carlin
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy
| | - Paolo Samorì
- University of Strasbourg CNRS ISIS UMR 7006, 8 Alleé Gaspard Monge, F-67000 Strasbourg, France.
| | - Artur Ciesielski
- Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, Poznań, Poland.
- University of Strasbourg CNRS ISIS UMR 7006, 8 Alleé Gaspard Monge, F-67000 Strasbourg, France.
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3
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Carlin M, Garrido M, Sosa S, Tubaro A, Prato M, Pelin M. In vitro assessment of skin irritation and corrosion properties of graphene-related materials on a 3D epidermis. Nanoscale 2023; 15:14423-14438. [PMID: 37623815 DOI: 10.1039/d3nr03081d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
The increasing use of graphene-related materials (GRMs) in many technological applications, ranging from electronics to biomedicine, needs a careful evaluation of their impact on human health. Skin contact can be considered one of the most relevant exposure routes to GRMs. Hence, this study is focused on two main adverse outcomes at the skin level, irritation and corrosion, assessed following two specific Test Guidelines (TGs) defined by the Organization for Economic Co-operation and Development (OECD) (439 and 431, respectively) that use an in vitro 3D reconstructed human epidermis (RhE) model. After the evaluation of their suitability to test a large panel of powdered GRMs, it was found that the latter were not irritants or corrosive. Only GRMs prepared with irritant surfactants, not sufficiently removed, reduced RhE viability at levels lower than those predicting skin irritation (≤50%, after 42 min exposure followed by 42 h recovery), but not at levels lower than those predicting corrosion (<50%, after 3 min exposure or <15% after 1 h exposure). As an additional readout, a hierarchical clustering analysis on a panel of inflammatory mediators (interleukins: IL-1α, IL-1β, IL-6, and IL-18; tumor necrosis factor-α and prostaglandin E2) released by RhE exposed to these materials supported the lack of irritant and pro-inflammatory properties. Overall, these results demonstrate that both TGs are useful in assessing GRMs for their irritant or corrosion potential, and that the tested materials did not cause these adverse effects at the skin level. Only GRMs prepared using toxic surfactants, not adequately removed, turned out to be skin irritants.
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Affiliation(s)
- Michela Carlin
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy.
| | - Marina Garrido
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy
- IMDEA Nanociencia, C/Faraday 9, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy.
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy.
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
- Basque Foundation for Science (IKERBASQUE), Bilbao, 48013, Spain
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy.
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Pelin M, Passerino C, Rodríguez-Garraus A, Carlin M, Sosa S, Suhonen S, Vales G, Alonso B, Zurutuza A, Catalán J, Tubaro A. Role of Chemical Reduction and Formulation of Graphene Oxide on Its Cytotoxicity towards Human Epithelial Bronchial Cells. Nanomaterials (Basel) 2023; 13:2189. [PMID: 37570507 PMCID: PMC10420834 DOI: 10.3390/nano13152189] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
Graphene-based materials may pose a potential risk for human health due to occupational exposure, mainly by inhalation. This study was carried out on bronchial epithelial 16HBE14o- cells to evaluate the role of chemical reduction and formulation of graphene oxide (GO) on its cytotoxic potential. To this end, the effects of GO were compared to its chemically reduced form (rGO) and its stable water dispersion (wdGO), by means of cell viability reduction, reactive oxygen species (ROS) generation, pro-inflammatory mediators release and genotoxicity. These materials induced a concentration-dependent cell viability reduction with the following potency rank: rGO > GO >> wdGO. After 24 h exposure, rGO reduced cell viability with an EC50 of 4.8 μg/mL (eight-fold lower than that of GO) and was the most potent material in inducing ROS generation, in contrast to wdGO. Cytokines release and genotoxicity (DNA damage and micronucleus induction) appeared low for all the materials, with wdGO showing the lowest effect, especially for the former. These results suggest a key role for GO reduction in increasing GO cytotoxic potential, probably due to material structure alterations resulting from the reduction process. In contrast, GO formulated in a stable dispersion seems to be the lowest cytotoxic material, presumably due to its lower cellular internalization and damaging capacity.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy; (C.P.); (M.C.); (S.S.); (A.T.)
| | - Clara Passerino
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy; (C.P.); (M.C.); (S.S.); (A.T.)
| | - Adriana Rodríguez-Garraus
- Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, 00032 Helsinki, Finland; (A.R.-G.); (S.S.); (G.V.); (J.C.)
| | - Michela Carlin
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy; (C.P.); (M.C.); (S.S.); (A.T.)
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy; (C.P.); (M.C.); (S.S.); (A.T.)
| | - Satu Suhonen
- Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, 00032 Helsinki, Finland; (A.R.-G.); (S.S.); (G.V.); (J.C.)
| | - Gerard Vales
- Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, 00032 Helsinki, Finland; (A.R.-G.); (S.S.); (G.V.); (J.C.)
| | - Beatriz Alonso
- Graphenea S.A., Mikeletegi 83, 20009 San Sebastián, Spain; (B.A.); (A.Z.)
| | - Amaia Zurutuza
- Graphenea S.A., Mikeletegi 83, 20009 San Sebastián, Spain; (B.A.); (A.Z.)
| | - Julia Catalán
- Finnish Institute of Occupational Health, Box 40, Työterveyslaitos, 00032 Helsinki, Finland; (A.R.-G.); (S.S.); (G.V.); (J.C.)
- Department of Anatomy Embryology and Genetics, University of Zaragoza, 50013 Zaragoza, Spain
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy; (C.P.); (M.C.); (S.S.); (A.T.)
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Rodríguez-Garraus A, Passerino C, Vales G, Carlin M, Suhonen S, Tubaro A, Gómez J, Pelin M, Catalán J. Impact of physico-chemical properties on the toxicological potential of reduced graphene oxide in human bronchial epithelial cells. Nanotoxicology 2023; 17:471-495. [PMID: 37799028 DOI: 10.1080/17435390.2023.2265465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/13/2023] [Indexed: 10/07/2023]
Abstract
The increasing use of graphene-based materials (GBM) requires their safety evaluation, especially in occupational settings. The same physico-chemical (PC) properties that confer GBM extraordinary functionalities may affect the potential toxic response. Most toxicity assessments mainly focus on graphene oxide and rarely investigate GBMs varying only by one property. As a novelty, the present study assessed the in vitro cytotoxicity and genotoxicity of six reduced graphene oxides (rGOs) with different PC properties in the human bronchial epithelial 16HBE14o - cell line. Of the six materials, rGO1-rGO4 only differed in the carbon-to-oxygen (C/O) content, whereas rGO5 and rGO6 were characterized by different lateral size and number of layers, respectively, but similar C/O content compared with rGO1. The materials were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, laser diffraction and dynamic light scattering, and Brunauer-Emmett-Teller analysis. Cytotoxicity (Luminescent Cell Viability and WST-8 assays), the induction of reactive oxygen species (ROS; 2',7'-dichlorofluorescin diacetate-based assay), the production of cytokines (enzyme-linked immunosorbent assays) and genotoxicity (comet and micronucleus assays) were evaluated. Furthermore, the internalization of the materials in the cells was confirmed by laser confocal microscopy. No relationships were found between the C/O ratio or the lateral size and any of the rGO-induced biological effects. However, rGO of higher oxygen content showed higher cytotoxic and early ROS-inducing potential, whereas genotoxic effects were observed with the rGO of the lowest density of oxygen groups. On the other hand, a higher number of layers seems to be associated with a decreased potential for inducing cytotoxicity and ROS production.
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Affiliation(s)
| | - Clara Passerino
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Gerard Vales
- Finnish Institute of Occupational Health, Työterveyslaitos, Helsinki, Finland
| | - Michela Carlin
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Satu Suhonen
- Finnish Institute of Occupational Health, Työterveyslaitos, Helsinki, Finland
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Julio Gómez
- Avanzare Innovacion Tecnologica S.L, Navarrete, Spain
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Julia Catalán
- Finnish Institute of Occupational Health, Työterveyslaitos, Helsinki, Finland
- Department of Anatomy, Embryology and Genetics, University of Zaragoza, Zaragoza, Spain
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Sosa S, Tubaro A, Carlin M, Ponti C, Vázquez E, Prato M, Pelin M. Assessment of skin sensitization properties of few-layer graphene and graphene oxide through the Local Lymph Node Assay (OECD TG 442B). NanoImpact 2023; 29:100448. [PMID: 36565921 DOI: 10.1016/j.impact.2022.100448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/25/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Skin contact is one of the most common exposure routes to graphene-based materials (GBMs) during their small-scale and industrial production or their use in technological applications. Nevertheless, toxic effects in humans by cutaneous exposure to GBMs remain largely unexplored, despite skin contact to other related materials has been associated with adverse effects. Hence, this in vivo study was carried out to evaluate the cutaneous effects of two GBMs, focusing on skin sensitization as a possible adverse outcome. Skin sensitization by few-layer graphene (FLG) and graphene oxide (GO) was evaluated following the Organization for Economic Cooperation and Development (OECD) guideline 442B (Local Lymph Node Assay; LLNA) measuring the proliferation of auricular lymph node cells during the induction phase of skin sensitization. Groups of four female CBA/JN mice (8-12 weeks) were daily exposed to FLG or GO through the dorsal skin of each ear (0.4-40 mg/mL, equal to 0.01-1.00 mg/ear) for 3 consecutive days, and proliferation of auricular lymph node cells was evaluated 3 days after the last treatment. During this period, no clinical signs of toxicity and no alterations in body weight and food or water consumptions were observed. In addition, no ear erythema or edema were recorded as signs of irritation or inflammation. Bromo-deoxyuridine (BrdU) incorporation in proliferating lymphocytes from ear lymph nodes (stimulation indexes <1.6) and the histological analysis of ear tissues excluded sensitizing or irritant properties of these materials, while myeloperoxidase activity in ear biopsies confirmed no inflammatory cells infiltrate. On the whole, this study indicates the absence of sensitization and irritant potential of FLG and GO.
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Affiliation(s)
- Silvio Sosa
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy
| | - Michela Carlin
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy
| | - Cristina Ponti
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy
| | - Ester Vázquez
- Regional Institute of Applied Scientific Research (IRICA), University of Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain; Department of Organic Chemistry, Faculty of Science and Chemistry Technologies, University of Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, Via Giorgeri 1, University of Trieste, 34127 Trieste, Italy; Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014 Donostia San Sebastián, Spain; Basque Foundation for Science (IKERBASQUE), Plaza Euskadi 5, 48013 Bilbao, Spain
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Via Fleming 22, 34127 Trieste, Italy.
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7
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Honsell G, Gaiani G, Hirama M, Pelin M, Tubaro A, Tsumuraya T, Campàs M. Cell immunolocalization of ciguatoxin-like compounds in the benthic dinoflagellate Gambierdiscus australes M. Chinain & M.A. Faust by confocal microscopy. Harmful Algae 2022; 120:102353. [PMID: 36470608 DOI: 10.1016/j.hal.2022.102353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/29/2022] [Accepted: 11/10/2022] [Indexed: 06/17/2023]
Abstract
Dinoflagellates of the genera Gambierdiscus and Fukuyoa are able to produce potent neurotoxins like ciguatoxins (CTXs), which, after biooxidation in fish, are responsible for ciguatera intoxication. An isolate of G. australes from the Canary Islands, that revealed the presence of CTX-like compounds by immunosensing tools, was studied by immunocytochemistry to localize intracellular CTX-like compounds, using 8H4 monoclonal antibody that specifically recognizes the right wing of CTX1B and CTX3C analogues. Confocal microscopy observations of immunostained whole cells revealed a strong positive reaction on cell surface and all along the cell outline, while no reaction was detected inside the cells, probably because the antibody was not able to pass through thecal plates. Cell sections showed a positive antibody staining not only on thecal plates, but also inside cytoplasm, with numerous small dots and larger tubule-like reticulate structures. Small fluorescent dots were detected also on the nuclear surface. These observations indicate that CTX-like compounds are present in G. australes cytoplasm, and then are, at least in part, released to cover the cell surface.
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Affiliation(s)
- Giorgio Honsell
- Department of Agrifood, Environmental and Animal Sciences - DI4A, University of Udine, via delle Scienze 91-93, Udine 33100, Italy.
| | - Greta Gaiani
- Institute of Agrifood Research and Technology (IRTA), Ctra. Poble Nou km. 5.5, La Ràpita 43540, Spain
| | - Masahiro Hirama
- Department of Biological Chemistry, Graduate School of Science, Osaka Metropolitan University, 1-2, Gakuen-cho, Sakai, Osaka 599-8570, Japan
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Via E. Weiss, 2, Trieste 34128, Italy
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via E. Weiss, 2, Trieste 34128, Italy
| | - Takeshi Tsumuraya
- Department of Biological Chemistry, Graduate School of Science, Osaka Metropolitan University, 1-2, Gakuen-cho, Sakai, Osaka 599-8570, Japan
| | - Mònica Campàs
- Institute of Agrifood Research and Technology (IRTA), Ctra. Poble Nou km. 5.5, La Ràpita 43540, Spain
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8
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Chortarea S, Kuru OC, Netkueakul W, Pelin M, Keshavan S, Song Z, Ma B, Gómes J, Abalos EV, Luna LAVD, Loret T, Fordham A, Drummond M, Kontis N, Anagnostopoulos G, Paterakis G, Cataldi P, Tubaro A, Galiotis C, Kinloch I, Fadeel B, Bussy C, Kostarelos K, Buerki-Thurnherr T, Prato M, Bianco A, Wick P. Hazard assessment of abraded thermoplastic composites reinforced with reduced graphene oxide. J Hazard Mater 2022; 435:129053. [PMID: 35650742 DOI: 10.1016/j.jhazmat.2022.129053] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/22/2022] [Accepted: 04/29/2022] [Indexed: 06/15/2023]
Abstract
Graphene-related materials (GRMs) are subject to intensive investigations and considerable progress has been made in recent years in terms of safety assessment. However, limited information is available concerning the hazard potential of GRM-containing products such as graphene-reinforced composites. In the present study, we conducted a comprehensive investigation of the potential biological effects of particles released through an abrasion process from reduced graphene oxide (rGO)-reinforced composites of polyamide 6 (PA6), a widely used engineered thermoplastic polymer, in comparison to as-produced rGO. First, a panel of well-established in vitro models, representative of the immune system and possible target organs such as the lungs, the gut, and the skin, was applied. Limited responses to PA6-rGO exposure were found in the different in vitro models. Only as-produced rGO induced substantial adverse effects, in particular in macrophages. Since inhalation of airborne materials is a key occupational concern, we then sought to test whether the in vitro responses noted for these materials would translate into adverse effects in vivo. To this end, the response at 1, 7 and 28 days after a single pulmonary exposure was evaluated in mice. In agreement with the in vitro data, PA6-rGO induced a modest and transient pulmonary inflammation, resolved by day 28. In contrast, rGO induced a longer-lasting, albeit moderate inflammation that did not lead to tissue remodeling within 28 days. Taken together, the present study suggests a negligible impact on human health under acute exposure conditions of GRM fillers such as rGO when released from composites at doses expected at the workplace.
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Affiliation(s)
- Savvina Chortarea
- Swiss Federal Laboratories for Materials Science and Technology (Empa), Laboratory for Particles-Biology Interactions, 9014 St. Gallen, Switzerland
| | - Ogul Can Kuru
- Swiss Federal Laboratories for Materials Science and Technology (Empa), Laboratory for Particles-Biology Interactions, 9014 St. Gallen, Switzerland
| | - Woranan Netkueakul
- Swiss Federal Laboratories for Materials Science and Technology (Empa), Laboratory for Particles-Biology Interactions, 9014 St. Gallen, Switzerland
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Sandeep Keshavan
- Nanosafety & Nanomedicine Laboratory, Institute of Environmental Medicine, Karolinska Institutet, 177 77 Stockholm, Sweden
| | - Zhengmei Song
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR3572, University of Strasbourg, ISIS, 67000 Strasbourg, France
| | - Baojin Ma
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR3572, University of Strasbourg, ISIS, 67000 Strasbourg, France
| | - Julio Gómes
- Avanzare Innovacion Tecnologica S.L. 26370 Navarrete, Spain
| | - Elvira Villaro Abalos
- Instituto de Tecnologías Químicas de La Rioja (InterQuímica), 26370 Navarrete, Spain
| | - Luis Augusto Visani de Luna
- Nanomedicine Lab, Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PT, United Kingdom; National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom; Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, United Kingdom
| | - Thomas Loret
- Nanomedicine Lab, Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PT, United Kingdom; National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom; Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, United Kingdom
| | - Alexander Fordham
- Nanomedicine Lab, Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PT, United Kingdom; National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom; Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, United Kingdom
| | - Matthew Drummond
- Nanomedicine Lab, Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PT, United Kingdom; National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Nikolaos Kontis
- Institute of Chemical Engineering Sciences, Foundation of Research and Technology-Hellas (FORTH/ICE-HT), 26504 Patras, Greece
| | - George Anagnostopoulos
- Institute of Chemical Engineering Sciences, Foundation of Research and Technology-Hellas (FORTH/ICE-HT), 26504 Patras, Greece
| | - George Paterakis
- Institute of Chemical Engineering Sciences, Foundation of Research and Technology-Hellas (FORTH/ICE-HT), 26504 Patras, Greece
| | - Pietro Cataldi
- National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom; Department of Materials, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Costas Galiotis
- Institute of Chemical Engineering Sciences, Foundation of Research and Technology-Hellas (FORTH/ICE-HT), 26504 Patras, Greece; Department of Chemical Engineering, University of Patras, 26504 Patras, Greece
| | - Ian Kinloch
- National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom; Department of Materials, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Bengt Fadeel
- Nanosafety & Nanomedicine Laboratory, Institute of Environmental Medicine, Karolinska Institutet, 177 77 Stockholm, Sweden
| | - Cyrill Bussy
- Nanomedicine Lab, Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PT, United Kingdom; National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom; Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PL, United Kingdom
| | - Kostas Kostarelos
- Nanomedicine Lab, Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PT, United Kingdom; National Graphene Institute, University of Manchester, Manchester M13 9PL, United Kingdom; Catalan Institute of Nanoscience and Nanotechnology (ICN2), and Barcelona Institute of Science and Technology (BIST), Barcelona 08193, Spain
| | - Tina Buerki-Thurnherr
- Swiss Federal Laboratories for Materials Science and Technology (Empa), Laboratory for Particles-Biology Interactions, 9014 St. Gallen, Switzerland
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy; Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia San Sebastián, Spain; Basque Foundation for Science (IKERBASQUE), 48013 Bilbao, Spain
| | - Alberto Bianco
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR3572, University of Strasbourg, ISIS, 67000 Strasbourg, France
| | - Peter Wick
- Swiss Federal Laboratories for Materials Science and Technology (Empa), Laboratory for Particles-Biology Interactions, 9014 St. Gallen, Switzerland.
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Genova E, Lucafò M, Pelin M, Di Paolo V, Quintieri L, Decorti G, Stocco G. Insights into the cellular pharmacokinetics and pharmacodynamics of thiopurine antimetabolites in a model of human intestinal cells. Chem Biol Interact 2021; 347:109624. [PMID: 34416244 DOI: 10.1016/j.cbi.2021.109624] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 08/04/2021] [Accepted: 08/16/2021] [Indexed: 02/07/2023]
Abstract
Thiopurines, immunomodulating drugs used in the management of different chronic autoimmune conditions and as anti-leukemic agents, may exert in some cases gastrointestinal toxicity. Moreover, since these agents are administered orally, they are absorbed across the gastrointestinal tract epithelium. On these premises, cellular and molecular events occurring in intestinal cells may be important to understand thiopurine effects. However, quantitative information on the biotransformation of thiopurines in intestinal tissues is still limited. To shed light on biotransformation processes specific of the intestinal tissue, in this study thiopurine metabolites concentrations were analyzed by an in vitro model of human healthy colon, the HCEC cell line, upon exposure to cytotoxic concentrations of azathioprine or mercaptopurine; the investigation was carried out using an innovative mass spectrometry method, that allowed the simultaneous quantification of 11 mono-, di-, and triphosphate thionucleotides. Among the 11 metabolites evaluated, TIMP, TGMP, TGDP, TGTP, MeTIMP, MeTIDP and MeTITP were detectable in HCEC cells treated with azathioprine or mercaptopurine, considering two different incubation times before the addition of the drugs (4 and 48 h). Different associations between metabolites concentrations and cytotoxicity were detected. In particular, the cytotoxicity was dependent on the TGMP, TGDP, TGTP and MeTITP concentrations after the 4 h incubation before the addition of thiopurines. This may be an indication that, to study the association between thiopurine metabolite concentrations and the cytotoxicity activity in vitro, short growth times before treatment should be used. Moreover, for the first time our findings highlight the strong correlation between cytotoxicity and thiopurine pharmacokinetics in HCEC intestinal cells in vitro suggesting that these cells could be a suitable in vitro model for studying thiopurine intestinal cytotoxicity.
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Affiliation(s)
- Elena Genova
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy
| | - Marianna Lucafò
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Veronica Di Paolo
- Laboratory of Drug Metabolism, Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Luigi Quintieri
- Laboratory of Drug Metabolism, Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Giuliana Decorti
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy; Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
| | - Gabriele Stocco
- Department of Life Sciences, University of Trieste, Trieste, Italy
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10
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Pelin M, Lin H, Gazzi A, Sosa S, Ponti C, Ortega A, Zurutuza A, Vázquez E, Prato M, Tubaro A, Bianco A. Partial Reversibility of the Cytotoxic Effect Induced by Graphene-Based Materials in Skin Keratinocytes. Nanomaterials (Basel) 2020; 10:nano10081602. [PMID: 32824126 PMCID: PMC7466707 DOI: 10.3390/nano10081602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/26/2022]
Abstract
In the frame of graphene-based material (GBM) hazard characterization, particular attention should be given to the cutaneous effects. Hence, this study investigates if HaCaT skin keratinocytes exposed to high concentrations of few-layer graphene (FLG) or partially dehydrated graphene oxide (d-GO) for a short time can recover from the cytotoxic insult, measured by means of cell viability, mitochondrial damage and oxidative stress, after GBM removal from the cell medium. When compared to 24 or 72 h continuous exposure, recovery experiments suggest that the cytotoxicity induced by 24 h exposure to GBM is only partially recovered after 48 h culture in GBM-free medium. This partial recovery, higher for FLG as compared to GO, is not mediated by autophagy and could be the consequence of GBM internalization into cells. The ability of GBMs to be internalized inside keratinocytes together with the partial reversibility of the cellular damage is important in assessing the risk associated with skin exposure to GBM-containing devices.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy; (S.S.); (C.P.); (A.T.)
- Correspondence: (M.P.); (A.B.); Tel.: +39-040-5588620 (M.P.); +33-388-417026 (A.B.)
| | - Hazel Lin
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, University of Strasbourg, ISIS, 67000 Strasbourg, France;
| | - Arianna Gazzi
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy; (A.G.); (M.P.)
- Fondazione Istituto di Ricerca Pediatrica, Città della Speranza, 35100 Padua, Italy
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy; (S.S.); (C.P.); (A.T.)
| | - Cristina Ponti
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy; (S.S.); (C.P.); (A.T.)
| | - Amaya Ortega
- Graphenea, 20009 Donostia-San Sebastián, Spain; (A.O.); (A.Z.)
| | - Amaia Zurutuza
- Graphenea, 20009 Donostia-San Sebastián, Spain; (A.O.); (A.Z.)
| | - Ester Vázquez
- Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha (UCLM), 13071 Ciudad Real, Spain;
- Instituto Regional de Investigacion Científica Aplicada (IRICA), Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy; (A.G.); (M.P.)
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014 Donostia San Sebastián, Spain
- Basque Foundation for Science (IKERBASQUE), 48013 Bilbao, Spain
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy; (S.S.); (C.P.); (A.T.)
| | - Alberto Bianco
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, University of Strasbourg, ISIS, 67000 Strasbourg, France;
- Correspondence: (M.P.); (A.B.); Tel.: +39-040-5588620 (M.P.); +33-388-417026 (A.B.)
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11
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Pelin M, Stocco G, Florio C, Sosa S, Tubaro A. In Vitro Cell Sensitivity to Palytoxin Correlates with High Gene Expression of the Na +/K +-ATPase β2 Subunit Isoform. Int J Mol Sci 2020; 21:ijms21165833. [PMID: 32823835 PMCID: PMC7461505 DOI: 10.3390/ijms21165833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/03/2020] [Accepted: 08/13/2020] [Indexed: 01/13/2023] Open
Abstract
The marine polyether palytoxin (PLTX) is one of the most toxic natural compounds, and is involved in human poisonings after oral, inhalation, skin and/or ocular exposure. Epidemiological and molecular evidence suggest different inter-individual sensitivities to its toxic effects, possibly related to genetic-dependent differences in the expression of Na+/K+-ATPase, its molecular target. To identify Na+/K+-ATPase subunits, isoforms correlated with in vitro PLTX cytotoxic potency, sensitivity parameters (EC50: PLTX concentration reducing cell viability by 50%; Emax: maximum effect induced by the highest toxin concentration; 10-7 M) were assessed in 60 healthy donors' monocytes by the MTT (methylthiazolyl tetrazolium) assay. Sensitivity parameters, not correlated with donors' demographic variables (gender, age and blood group), demonstrated a high inter-individual variability (median EC50 = 2.7 × 10-10 M, interquartile range: 0.4-13.2 × 10-10 M; median Emax = 92.0%, interquartile range: 87.5-94.4%). Spearman's analysis showed significant positive correlations between the β2-encoding ATP1B2 gene expression and Emax values (rho = 0.30; p = 0.025) and between Emax and the ATP1B2/ATP1B3 expression ratio (rho = 0.38; p = 0.004), as well as a significant negative correlation between Emax and the ATP1B1/ATP1B2 expression ratio (rho = -0.30; p = 0.026). This toxicogenetic study represents the first approach to define genetic risk factors that may influence the onset of adverse effects in human PLTX poisonings, suggesting that individuals with high gene expression pattern of the Na+/K+-ATPase β2 subunit (alone or as β2/β1 and/or β2/β3 ratio) could be highly sensitive to PLTX toxic effects.
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12
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Genova E, Cavion F, Lucafò M, Pelin M, Lanzi G, Masneri S, Ferraro RM, Fazzi EM, Orcesi S, Decorti G, Tommasini A, Giliani S, Stocco G. Biomarkers and Precision Therapy for Primary Immunodeficiencies: An
In Vitro
Study Based on Induced Pluripotent Stem Cells From Patients. Clin Pharmacol Ther 2020; 108:358-367. [DOI: 10.1002/cpt.1837] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/06/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Elena Genova
- PhD Course in Reproductive and Developmental Sciences University of Trieste Trieste Italy
- Department of Life Sciences University of Trieste Trieste Italy
| | - Federica Cavion
- Department of Life Sciences University of Trieste Trieste Italy
| | - Marianna Lucafò
- Institute for Maternal and Child Health IRCCS Burlo Garofolo Trieste Italy
| | - Marco Pelin
- Department of Life Sciences University of Trieste Trieste Italy
| | - Gaetana Lanzi
- ″Angelo Nocivelli” Institute for Molecular Medicine ASST Spedali Civili Brescia Italy
- Department of Molecular and Translational Medicine University of Brescia Brescia Italy
| | - Stefania Masneri
- ″Angelo Nocivelli” Institute for Molecular Medicine ASST Spedali Civili Brescia Italy
- Department of Molecular and Translational Medicine University of Brescia Brescia Italy
| | - Rosalba Monica Ferraro
- ″Angelo Nocivelli” Institute for Molecular Medicine ASST Spedali Civili Brescia Italy
- Department of Molecular and Translational Medicine University of Brescia Brescia Italy
| | - Elisa Maria Fazzi
- Child Neurology and Psychiatry Unit ASST Spedali Civili Brescia Italy
- Department of Clinical and Experimental Sciences University of Brescia Brescia Italy
| | - Simona Orcesi
- Department of Brain and Behavioral Sciences University of Pavia Italy
- Child Neurology and Psychiatry Unit IRCCS Mondino Foundation Pavia Italy
| | - Giuliana Decorti
- Institute for Maternal and Child Health IRCCS Burlo Garofolo Trieste Italy
- Department of Medical, Surgical and Health Sciences University of Trieste Trieste Italy
| | - Alberto Tommasini
- Institute for Maternal and Child Health IRCCS Burlo Garofolo Trieste Italy
| | - Silvia Giliani
- ″Angelo Nocivelli” Institute for Molecular Medicine ASST Spedali Civili Brescia Italy
- Department of Molecular and Translational Medicine University of Brescia Brescia Italy
| | - Gabriele Stocco
- Department of Life Sciences University of Trieste Trieste Italy
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Sosa S, Pelin M, Cavion F, Hervé F, Hess P, Tubaro A. Acute Oral Toxicity of Pinnatoxin G in Mice. Toxins (Basel) 2020; 12:toxins12020087. [PMID: 32012834 PMCID: PMC7076786 DOI: 10.3390/toxins12020087] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/21/2020] [Accepted: 01/23/2020] [Indexed: 01/18/2023] Open
Abstract
Pinnatoxin G (PnTx-G) is a marine cyclic imine toxin produced by the dinoflagellate Vulcanodinium rugosum, frequently detected in edible shellfish from Ingril Lagoon (France). As other pinnatoxins, to date, no human poisonings ascribed to consumption of PnTx-G contaminated seafood have been reported, despite its potent antagonism at nicotinic acetylcholine receptors and its high and fast-acting toxicity after intraperitoneal or oral administration in mice. The hazard characterization of PnTx-G by oral exposure is limited to a single acute toxicity study recording lethality and clinical signs in non-fasted mice treated by gavage or through voluntary food ingestion, which showed differences in PnTx-G toxic potency. Thus, an acute toxicity study was carried out using 3 h-fasted CD-1 female mice, administered by gavage with PnTx-G (8–450 µg kg−1). At the dose of 220 µg kg−1 and above, the toxin induced a rapid onset of clinical signs (piloerection, prostration, hypothermia, abdominal breathing, paralysis of the hind limbs, and cyanosis), leading to the death of mice within 30 min. Except for moderate mucosal degeneration in the small intestine recorded at doses of 300 µg kg−1, the toxin did not induce significant morphological changes in the other main organs and tissues, or alterations in blood chemistry parameters. This acute oral toxicity study allowed to calculate an oral LD50 for PnTx-G equal to 208 μg kg−1 (95% confidence limits: 155–281 µg kg−1) and to estimate a provisional NOEL of 120 µg kg−1.
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Affiliation(s)
- Silvio Sosa
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy; (M.P.); (F.C.); (A.T.)
- Correspondence: ; Tel.: +39-040-558-8836
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy; (M.P.); (F.C.); (A.T.)
| | - Federica Cavion
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy; (M.P.); (F.C.); (A.T.)
| | - Fabienne Hervé
- Ifremer, Laboratoire Phycotoxines, Centre Atlantique, 44311 Nantes CEDEX, France; (F.H.); (P.H.)
| | - Philipp Hess
- Ifremer, Laboratoire Phycotoxines, Centre Atlantique, 44311 Nantes CEDEX, France; (F.H.); (P.H.)
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy; (M.P.); (F.C.); (A.T.)
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14
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Fusco L, Garrido M, Martín C, Sosa S, Ponti C, Centeno A, Alonso B, Zurutuza A, Vázquez E, Tubaro A, Prato M, Pelin M. Skin irritation potential of graphene-based materials using a non-animal test. Nanoscale 2020; 12:610-622. [PMID: 31829371 DOI: 10.1039/c9nr06815e] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Besides inhalation, skin contact may be considered one of the most relevant exposure routes to graphene-based materials (GBMs). However, very few data on the cutaneous toxicity of these materials are available, so far. This study is focused on skin irritation potential of a panel of GBMs: few-layer graphene (FLG), exfoliated by ball milling of graphite, FLG exfoliated by ultrasonication using sodium dodecyl sulfate (FLG-SDS) or sodium dodecylbenzenesulfonate (FLG-SDBS), CVD-graphene, obtained by chemical vapor deposition, graphene oxide (GO) and reduced GO (rGO). Skin irritation was assessed using the SkinEthic™ Reconstructed human Epidermis (RhE), following the Organisation for Economic Co-operation and Development (OECD) Test Guideline (TG) 439. Even though not validated for nanomaterials, the OCED TG 439 turned out to be applicable also for GBM testing, since no interference with the methylthiazolyldiphenyl-tetrazolium bromide (MTT) reduction, used as a final readout, was found. Furthermore, direct epidermal exposure to powdered GBMs mimics the actual human exposure, avoiding interference by the cell culture medium (protein corona formation). Only GBMs prepared with irritant surfactants (FLG-SDS and FLG-SDBS), but not the others, reduced RhE viability at levels lower than those predicting skin irritation (≤50%), suggesting irritant properties. This result was further confirmed by measuring cytokine (IL-1α, IL-6 and IL-8) release by GBM-treated RhE and by histological analysis as additional readouts to implement the guideline. On the whole, these results demonstrate that GBMs prepared with non-irritant exfoliation agents do not induce skin irritation after a single acute exposure.
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Affiliation(s)
- Laura Fusco
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy.
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15
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Genova E, Cavion F, Lucafò M, Leo LD, Pelin M, Stocco G, Decorti G. Induced pluripotent stem cells for therapy personalization in pediatric patients: Focus on drug-induced adverse events. World J Stem Cells 2019; 11:1020-1044. [PMID: 31875867 PMCID: PMC6904863 DOI: 10.4252/wjsc.v11.i12.1020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 09/05/2019] [Accepted: 10/14/2019] [Indexed: 02/06/2023] Open
Abstract
Adverse drug reactions (ADRs) are major clinical problems, particularly in special populations such as pediatric patients. Indeed, ADRs may be caused by a plethora of different drugs leading, in some cases, to hospitalization, disability or even death. In addition, pediatric patients may respond differently to drugs with respect to adults and may be prone to developing different kinds of ADRs, leading, in some cases, to more severe consequences. To improve the comprehension, and thus the prevention, of ADRs, the set-up of sensitive and personalized assays is urgently needed. Important progress is represented by the possibility of setting up groundbreaking patient-specific assays. This goal has been powerfully achieved using induced pluripotent stem cells (iPSCs). Due to their genetic and physiological species-specific differences and their ability to be differentiated ideally into all tissues of the human body, this model may be accurate in predicting drug toxicity, especially when this toxicity is related to individual genetic differences. This review is an up-to-date summary of the employment of iPSCs as a model to study ADRs, with particular attention to drugs used in the pediatric field. We especially focused on the intestinal, hepatic, pancreatic, renal, cardiac, and neuronal levels, also discussing progress in organoids creation. The latter are three-dimensional in vitro culture systems derived from pluripotent or adult stem cells simulating the architecture and functionality of native organs such as the intestine, liver, pancreas, kidney, heart, and brain. Based on the existing knowledge, these models are powerful and promising tools in multiple clinical applications including toxicity screening, disease modeling, personalized and regenerative medicine.
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Affiliation(s)
- Elena Genova
- PhD School in Reproduction and Development Sciences, University of Trieste, Trieste 34127, Italy
| | - Federica Cavion
- Department of Life Sciences, University of Trieste, Trieste 34127, Italy
| | - Marianna Lucafò
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste 34137, Italy
| | - Luigina De Leo
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste 34137, Italy
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Trieste 34127, Italy
| | - Gabriele Stocco
- Department of Life Sciences, University of Trieste, Trieste 34127, Italy.
| | - Giuliana Decorti
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste 34137, Italy
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Cuzzoni E, Franca R, De Iudicibus S, Marcuzzi A, Lucafò M, Pelin M, Favretto D, Monti E, Morello W, Ghio L, La Scola C, Mencarelli F, Pasini A, Montini G, Decorti G, Stocco G. MIF plasma level as a possible tool to predict steroid responsiveness in children with idiopathic nephrotic syndrome. Eur J Clin Pharmacol 2019; 75:1675-1683. [PMID: 31463578 DOI: 10.1007/s00228-019-02749-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 08/13/2019] [Indexed: 12/17/2022]
Abstract
PURPOSE Idiopathic nephrotic syndrome (INS) is the most frequent form of childhood nephrotic syndrome. Steroids represent the best therapeutic option; however, inter-individual differences in their efficacy and side effects have been reported. To date, there is no way to predict patients' resistance and/or dependence. Alterations in the cytokine profile of INS patients might contribute to proteinuria and glomerular damage and affect drug sensitivity. METHODS The cytokine plasma levels were measured in 21 INS children at diagnosis to investigate the association among cytokines pattern and clinical response. Patients were selected on the basis of their clinical response: 7 steroid sensitive (SS), 7 dependent (SD), and 7 resistant (SR). Significant results were then analyzed in 41 additional pediatric INS patients. RESULTS Within the 48 cytokines analyzed, macrophage migration inhibitory factor (MIF) was a good predictor of steroid response. Indeed, SR patients showed significantly higher MIF plasma levels compared with all others (p = 0.022; OR = 4.3, 95%CI = 1.2-25.4): a cutoff concentration of MIF > 501 pg/ml significantly discriminated SR patients (sensitivity = 85.7%, specificity = 71.4%). On the contrary, SD patients showed lower MIF plasma levels compared with others (p = 0.010; OR = 0.12, 95%CI = 9.2 × 10-3-6.7 × 10-1). Significant results were confirmed in the entire cohort. CONCLUSIONS Our comprehensive cytokine analysis indicates that assessing MIF plasma levels at diagnosis could predict response to glucocorticoids in children with INS.
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Affiliation(s)
- Eva Cuzzoni
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Raffaella Franca
- Department of Medical Surgical and Health Sciences, University of Trieste, Trieste, 34127, Italy
| | - Sara De Iudicibus
- Institute for Maternal Health - IRCCS "Burlo Garofolo", Trieste, Italy
| | - Annalisa Marcuzzi
- Institute for Maternal Health - IRCCS "Burlo Garofolo", Trieste, Italy
| | - Marianna Lucafò
- Institute for Maternal Health - IRCCS "Burlo Garofolo", Trieste, Italy
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Diego Favretto
- Department of Medical Surgical and Health Sciences, University of Trieste, Trieste, 34127, Italy
| | - Elena Monti
- Nephrology and Dialysis Unit, Department of Pediatrics, Azienda Ospedaliera Universitaria Sant'Orsola, Bologna, Italy
| | - William Morello
- Pediatric Nephrology, Dialysis and Transplant Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Luciana Ghio
- Pediatric Nephrology, Dialysis and Transplant Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Claudio La Scola
- Nephrology and Dialysis Unit, Department of Pediatrics, Azienda Ospedaliera Universitaria Sant'Orsola, Bologna, Italy
| | - Francesca Mencarelli
- Nephrology and Dialysis Unit, Department of Pediatrics, Azienda Ospedaliera Universitaria Sant'Orsola, Bologna, Italy
| | - Andrea Pasini
- Nephrology and Dialysis Unit, Department of Pediatrics, Azienda Ospedaliera Universitaria Sant'Orsola, Bologna, Italy
| | - Giovanni Montini
- Pediatric Nephrology, Dialysis and Transplant Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Giuliana Decorti
- Department of Medical Surgical and Health Sciences, University of Trieste, Trieste, 34127, Italy.
- Institute for Maternal Health - IRCCS "Burlo Garofolo", Trieste, Italy.
| | - Gabriele Stocco
- Department of Life Sciences, University of Trieste, Trieste, Italy
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Fadeel B, Bussy C, Merino S, Vázquez E, Flahaut E, Mouchet F, Evariste L, Gauthier L, Koivisto AJ, Vogel U, Martín C, Delogu LG, Buerki-Thurnherr T, Wick P, Beloin-Saint-Pierre D, Hischier R, Pelin M, Candotto Carniel F, Tretiach M, Cesca F, Benfenati F, Scaini D, Ballerini L, Kostarelos K, Prato M, Bianco A. Safety Assessment of Graphene-Based Materials: Focus on Human Health and the Environment. ACS Nano 2018; 12:10582-10620. [PMID: 30387986 DOI: 10.1021/acsnano.8b04758] [Citation(s) in RCA: 297] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
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.
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Affiliation(s)
- Bengt Fadeel
- Nanosafety & Nanomedicine Laboratory, Institute of Environmental Medicine , Karolinska Institutet , 17777 Stockholm , Sweden
| | - Cyrill Bussy
- Nanomedicine Laboratory, Faculty of Biology, Medicine & Health , University of Manchester , Manchester M13 9PL , United Kingdom
| | - Sonia Merino
- Faculty of Chemical Science and Technology , University of Castilla-La Mancha , 13071 Ciudad Real , Spain
| | - Ester Vázquez
- Faculty of Chemical Science and Technology , University of Castilla-La Mancha , 13071 Ciudad Real , Spain
| | | | | | | | - Laury Gauthier
- CNRS, Université Paul Sabatier , 31062 Toulouse , France
| | - Antti J Koivisto
- National Research Centre for the Working Environment , 2100 Copenhagen , Denmark
| | - Ulla Vogel
- National Research Centre for the Working Environment , 2100 Copenhagen , Denmark
| | - Cristina Martín
- University of Strasbourg, CNRS , Immunology, Immunopathology and Therapeutic Chemistry , 67000 Strasbourg , France
| | - Lucia G Delogu
- Department of Chemistry and Pharmacy University of Sassari , Sassari 7100 , Italy
- Istituto di Ricerca Pediatrica , Fondazione Città della Speranza , 35129 Padova , Italy
| | - Tina Buerki-Thurnherr
- Swiss Federal Laboratories for Materials Science and Technology (EMPA) , 9014 St. Gallen , Switzerland
| | - Peter Wick
- Swiss Federal Laboratories for Materials Science and Technology (EMPA) , 9014 St. Gallen , Switzerland
| | | | - Roland Hischier
- Swiss Federal Laboratories for Materials Science and Technology (EMPA) , 9014 St. Gallen , Switzerland
| | - Marco Pelin
- Department of Life Sciences , University of Trieste , 34127 Trieste , Italy
| | | | - Mauro Tretiach
- Department of Life Sciences , University of Trieste , 34127 Trieste , Italy
| | - Fabrizia Cesca
- Center for Synaptic Neuroscience and Technology , Istituto Italiano di Tecnologia , 16132 Genova , Italy
| | - Fabio Benfenati
- Center for Synaptic Neuroscience and Technology , Istituto Italiano di Tecnologia , 16132 Genova , Italy
| | - Denis Scaini
- Scuola Internazionale Superiore di Studi Avanzati (SISSA) , 34136 Trieste , Italy
| | - Laura Ballerini
- Scuola Internazionale Superiore di Studi Avanzati (SISSA) , 34136 Trieste , Italy
| | - Kostas Kostarelos
- Nanomedicine Laboratory, Faculty of Biology, Medicine & Health , University of Manchester , Manchester M13 9PL , United Kingdom
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences , University of Trieste , 34127 Trieste , Italy
- Carbon Nanobiotechnology Laboratory , CIC BiomaGUNE , 20009 San Sebastian , Spain
- Basque Foundation for Science, Ikerbasque , 48013 Bilbao , Spain
| | - Alberto Bianco
- University of Strasbourg, CNRS , Immunology, Immunopathology and Therapeutic Chemistry , 67000 Strasbourg , France
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18
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Abstract
Graphene-based materials (GBMs) are a family of novel materials including graphene, few layer graphene (FLG), graphene oxide (GO), reduced graphene oxide (rGO) and graphene nanoplatelets (GNP). Currently, the risk posed by them to human health is associated mainly with the occupational exposure during their industrial and small-scale production or waste discharge. The most significant occupational exposure routes are inhalation, oral, cutaneous and ocular, inhalation being the majorly involved and most studied one. This manuscript presents a critical up-to-date review of the available in vivo toxicity data of the most significant GBMs, after using these exposure routes. The few in vivo inhalation toxicity studies (limited to 5-days of repeated exposure and only one to 5 days per week for 4 weeks) indicate inflammatory/fibrotic effects at the pulmonary level, not always reversible after 14/90 days. More limited in vivo data are available for the oral and ocular exposure routes, whereas the studies on cutaneous toxicity are at the initial stage. A long persistence of GBMs in rodents is recorded, while contradictory genotoxic data are reported. Data gap identification is also provided. Based on the available data, the occupational exposure limit cannot be determined. More experimental toxicity studies according to specific guidelines (tentatively validated for nanomaterials) and more information on the actual occupational exposure level to GBMs are needed. Furthermore, ADME (Absorption, Distribution, Metabolism, Excretion), genotoxicity, developmental and reproductive toxicity data related to the occupational exposure to GBMs have to be implemented. In addition, sub-chronic and/or chronic studies are still needed to completely exclude other toxic effects and/or carcinogenicity.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
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Pelin M, Sosa S, Brovedani V, Fusco L, Poli M, Tubaro A. A Novel Sensitive Cell-Based Immunoenzymatic Assay for Palytoxin Quantitation in Mussels. Toxins (Basel) 2018; 10:toxins10080329. [PMID: 30110919 PMCID: PMC6116170 DOI: 10.3390/toxins10080329] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/08/2018] [Accepted: 08/10/2018] [Indexed: 12/24/2022] Open
Abstract
The marine algal toxin palytoxin (PLTX) and its analogues are some of the most toxic marine compounds. Their accumulation in edible marine organisms and entrance into the food chain represent their main concerns for human health. Indeed, several fatal human poisonings attributed to these compounds have been recorded in tropical and subtropical areas. Due to the increasing occurrence of PLTX in temperate areas such as the Mediterranean Sea, the European Food Safety Authority (EFSA) has suggested a maximum limit of 30 µg PLTX/kg in shellfish meat, and has recommended the development of rapid, specific, and sensitive methods for detection and quantitation of PLTX in seafood. Thus, a novel, sensitive cell-based ELISA was developed and characterized for PLTX quantitation in mussels. The estimated limits of detection (LOD) and quantitation (LOQ) were 1.2 × 10−11 M (32.2 pg/mL) and 2.8 × 10−11 M (75.0 pg/mL), respectively, with good accuracy (bias = 2.5%) and repeatability (15% and 9% interday and intraday relative standard deviation of repeatability (RSDr), respectively). Minimal interference of 80% aqueous methanol extract allows PLTX quantitation in mussels at concentrations lower than the maximum limit suggested by EFSA, with an LOQ of 9.1 µg PLTX equivalent/kg mussel meat. Given its high sensitivity and specificity, the cell-based ELISA should be considered a suitable method for PLTX quantitation.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
| | | | - Laura Fusco
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
| | - Mark Poli
- U.S. Army Medical Research Institute of Infectious Diseases, Ft. Detrick, MD 21701-5011, USA.
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
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20
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Genova E, Pelin M, Sasaki K, Yue F, Lanzi G, Masneri S, Ventura A, Stocco G, Decorti G. Induced Pluripotent Stem Cells as a Model for Therapy Personalization of Pediatric Patients: Disease Modeling and Drug Adverse Effects Prevention. Curr Med Chem 2018; 25:2826-2839. [PMID: 28782468 DOI: 10.2174/0929867324666170804150131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/14/2017] [Accepted: 07/17/2017] [Indexed: 12/14/2022]
Abstract
Understanding the biological and molecular processes underlying human pathologies is fundamental in order to develop innovative approaches to treat or prevent them. Among the technologies that could provide innovative disease models, induced pluripotent stem cells (iPSCs) is one of the most promising. Indeed, one application of this technology is patient-specific disease modeling. iPSCs obtained by reprogramming patients' cells collected from accessible tissues, have the unique capability to differentiate, under an adequate stimulus, into any human cell type. In particular, iPSCs technology can be applied to study drug adverse effects, that is a key part of the drug discovery process. Indeed, drug induced adverse effects are among the most common causes that lead to abandon the development of new candidate therapeutic molecules, increasing the cost of drug discovery. An innovative strategy that could be used in drug design to solve drug attrition rate, and to establish innovative pharmacological models, could be the application of iPSCs technology in the early stage of the drug discovery process to model druginduced adverse events. In this review, recently developed disease models based on iPSCs will be discussed, with a particular focus on available models of drugs' adverse effect, in particular hepatic/pancreatic toxicity.
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Affiliation(s)
- Elena Genova
- PhD School in Reproduction and Developmental Sciences, University of Trieste, Trieste, Italy
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Katsunori Sasaki
- Department of Histology and Embryology, Shinshu University, Matsumoto, Japan
| | - Fengming Yue
- Department of Histology and Embryology, Shinshu University, Matsumoto, Japan
| | - Gaetana Lanzi
- Nocivelli Institute for Molecular Medicine and Spedali Civili, Brescia, Italy
| | - Stefania Masneri
- Nocivelli Institute for Molecular Medicine and Spedali Civili, Brescia, Italy
| | - Alessandro Ventura
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy.,Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Gabriele Stocco
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Giuliana Decorti
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy.,Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
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21
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Pelin M, Fusco L, Martín C, Sosa S, Frontiñán-Rubio J, González-Domínguez JM, Durán-Prado M, Vázquez E, Prato M, Tubaro A. Graphene and graphene oxide induce ROS production in human HaCaT skin keratinocytes: the role of xanthine oxidase and NADH dehydrogenase. Nanoscale 2018; 10:11820-11830. [PMID: 29920573 DOI: 10.1039/c8nr02933d] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The extraordinary physicochemical properties of graphene-based nanomaterials (GBNs) make them promising tools in nanotechnology and biomedicine. Considering the skin contact as one of the most feasible exposure routes to GBNs, the mechanism of toxicity of two GBNs (few-layer-graphene, FLG, and graphene oxide, GO) towards human HaCaT skin keratinocytes was investigated. Both materials induced a significant mitochondrial membrane depolarization: 72 h cell exposure to 100 μg mL-1 FLG or GO increased mitochondrial depolarization by 44% and 56%, respectively, while the positive control valinomycin (0.1 μg mL-1) increased mitochondrial depolarization by 48%. Since the effect was not prevented by cyclosporine-A, it appears to be unrelated to mitochondrial transition pore opening. By contrast, it seems to be mediated by reactive oxygen species (ROS) production: FLG and GO induced time- and concentration-dependent cellular ROS production, significant already at the concentration of 0.4 μg mL-1 after 24 h exposure. Among a panel of specific inhibitors of the major ROS-producing enzymes, diphenyliodonium, rotenone and allopurinol significantly reverted or even abolished FLG- or GO-induced ROS production. Intriguingly, the same inhibitors also significantly reduced FLG- or GO-induced mitochondrial depolarization and cytotoxicity. This study shows that FLG and GO induce a cytotoxic effect due to a sustained mitochondrial depolarization. This seems to be mediated by a significant cellular ROS production, caused by the activation of flavoprotein-based oxidative enzymes, such as NADH dehydrogenase and xanthine oxidase.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
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22
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Pelin M, Sosa S, Ponti C, Gibellini D, Florio C, Tubaro A. Pro-inflammatory effects of palytoxin on skin keratinocytes and indirect modulation of inflammatory cells. Toxicon 2018. [DOI: 10.1016/j.toxicon.2017.12.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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23
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Genova E, Pelin M, Decorti G, Stocco G, Sergo V, Ventura A, Bonifacio A. SERS of cells: What can we learn from cell lysates? Anal Chim Acta 2017; 1005:93-100. [PMID: 29389323 DOI: 10.1016/j.aca.2017.12.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/31/2017] [Accepted: 12/10/2017] [Indexed: 11/28/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is a promising and emerging technique to analyze the cellular environment. We developed an alternative, rapid and label-free SERS-based method to get information about the cellular environment by analyzing cells lysates, thus avoiding the need to incorporate nanoparticles into cells. Upon sonicating and filtrating cells, we obtained lysates which, mixed with Au or Ag nanoparticles, yield stable and repeatable SERS spectra, whose overall profile depends on the metal used as substrate, but not on the buffer used for the lysis process. Bands appearing in these spectra were shown to arise mostly from the cytosol and were assigned to adenine, guanine, adenosine and reduced glutathione (GSH). Spectral differences among various cell types also demonstrated that this approach is suitable for cell type identification.
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Affiliation(s)
- E Genova
- PhD School of Reproduction and Developmental Sciences, University of Trieste, 34127 Trieste, Italy
| | - M Pelin
- Dept. of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - G Decorti
- Dept. of Medicine, Surgery and Health Sciences, University of Trieste, 34127 Trieste, Italy; Institute for Maternal and Child Health IRCCS Burlo Garofolo, Via dell'Istria 65/1, Trieste, 34137, Italy
| | - G Stocco
- Dept. of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - V Sergo
- Dept. of Engineering and Architecture, University of Trieste, 34127 Trieste, Italy
| | - A Ventura
- Dept. of Medicine, Surgery and Health Sciences, University of Trieste, 34127 Trieste, Italy; Institute for Maternal and Child Health IRCCS Burlo Garofolo, Via dell'Istria 65/1, Trieste, 34137, Italy
| | - A Bonifacio
- Dept. of Engineering and Architecture, University of Trieste, 34127 Trieste, Italy.
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24
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Pelin M, Fusco L, Sosa S, Martìn C, Vazquez E, Prato M, Tubaro A. Mitochondrial involvement in the mechanism of oxidative damage induced by graphene and graphene oxide at the skin level. Toxicol Lett 2017. [DOI: 10.1016/j.toxlet.2017.07.529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pelin M, Genova E, Fusco L, Marisat M, Hofmann U, Favretto D, Lucafò M, Taddio A, Martelossi S, Ventura A, Stocco G, Schwab M, Decorti G. Pharmacokinetics and pharmacodynamics of thiopurines in an in vitro model of human hepatocytes: Insights from an innovative mass spectrometry assay. Chem Biol Interact 2017; 275:189-195. [PMID: 28811125 DOI: 10.1016/j.cbi.2017.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 07/05/2017] [Accepted: 08/11/2017] [Indexed: 02/07/2023]
Abstract
AIM To apply an innovative LC-MS/MS method to quantify thiopurine metabolites in human hepatocytes and to associate them to cytotoxicity. METHODS Immortalized human hepatocytes (IHH cells) were treated for 48 and 96 h, with 1.4 × 10-4 M azathioprine and 1.1 × 10-3 M mercaptopurine, concentrations corresponding to the IC50 values calculated after 96 h exposure in previous cytotoxicity analysis. After treatments, cells were collected for LC-MS/MS analysis to quantify 11 thiopurine metabolites with different level of phosphorylation and viable cells were counted by trypan blue exclusion assay to determine thiopurines in vitro effect on cell growth and survival. Statistical significance was determined by analysis of variance (ANOVA). RESULTS Azathioprine and mercaptopurine had a significant time-dependent cytotoxic effect (p-value ANOVA = 0.012), with a viable cell count compared to controls of 55.5% and 67.5% respectively after 48 h and 23.7% and 36.1% after 96 h; no significant difference could be observed between the two drugs. Quantification of thiopurine metabolites evidenced that the most abundant metabolite was TIMP, representing 57.1% and 40.3% of total metabolites after 48 and 96 h. Total thiopurine metabolites absolute concentrations decreased over time: total mean content decreased from 469.9 pmol/million cells to 83.6 pmol/million cells (p-value ANOVA = 0.0070). However, considering the relative amount of thiopurine metabolites, TGMP content significantly increased from 11.4% cells to 26.4% (p-value ANOVA = 0.017). A significant association between thiopurine effects and viable cell counts could be detected only for MeTIMP: lower MeTIMP concentrations were associated with lower cell survival (p-value ANOVA = 0.011). Moreover, the ratio between MeTIMP and TGMP metabolites directly correlated with cell survival (p-value ANOVA = 0.037). CONCLUSION Detailed quantification of thiopurine metabolites in a human hepatocytes model provided useful insights on the association between thioguanine and methyl-thioinosine nucleotides with cell viability.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences, University of Trieste, I-34127 Trieste, Italy
| | - Elena Genova
- PhD School in Reproduction and Developmental Sciences, University of Trieste, I-34127 Trieste, Italy
| | - Laura Fusco
- PhD School in Chemistry, University of Trieste, I-34127 Trieste, Italy
| | - Monzer Marisat
- Department of Medical, Surgical and Health Sciences, University of Trieste, I-34127 Trieste, Italy
| | - Ute Hofmann
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, D-70376 Stuttgart, Germany; University of Tübingen, Tübingen, Germany
| | - Diego Favretto
- Institute for Maternal and Child Health I.R.C.C.S. Burlo Garofolo, I-34137 Trieste, Italy
| | - Marianna Lucafò
- Department of Medical, Surgical and Health Sciences, University of Trieste, I-34127 Trieste, Italy
| | - Andrea Taddio
- Department of Medical, Surgical and Health Sciences, University of Trieste, I-34127 Trieste, Italy; Institute for Maternal and Child Health I.R.C.C.S. Burlo Garofolo, I-34137 Trieste, Italy
| | - Stefano Martelossi
- Institute for Maternal and Child Health I.R.C.C.S. Burlo Garofolo, I-34137 Trieste, Italy
| | - Alessandro Ventura
- Department of Medical, Surgical and Health Sciences, University of Trieste, I-34127 Trieste, Italy; Institute for Maternal and Child Health I.R.C.C.S. Burlo Garofolo, I-34137 Trieste, Italy
| | - Gabriele Stocco
- Department of Life Sciences, University of Trieste, I-34127 Trieste, Italy.
| | - Matthias Schwab
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, D-70376 Stuttgart, Germany; University of Tübingen, Tübingen, Germany; Department of Clinical Pharmacology, University Hospital Tübingen, D-72076 Tübingen, Germany; Department of Pharmacy and Biochemistry, University of Tübingen, D-72076 Tübingen, Germany
| | - Giuliana Decorti
- Department of Medical, Surgical and Health Sciences, University of Trieste, I-34127 Trieste, Italy; Institute for Maternal and Child Health I.R.C.C.S. Burlo Garofolo, I-34137 Trieste, Italy
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26
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Ciaglia E, Malfitano AM, Laezza C, Fontana A, Nuzzo G, Cutignano A, Abate M, Pelin M, Sosa S, Bifulco M, Gazzerro P. Immuno-Modulatory and Anti-Inflammatory Effects of Dihydrogracilin A, a Terpene Derived from the Marine Sponge Dendrilla membranosa. Int J Mol Sci 2017; 18:ijms18081643. [PMID: 28788056 PMCID: PMC5578033 DOI: 10.3390/ijms18081643] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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: 05/01/2017] [Revised: 06/11/2017] [Accepted: 06/23/2017] [Indexed: 01/17/2023] Open
Abstract
We assessed the immunomodulatory and anti-inflammatory effects of 9,11-dihydrogracilin A (DHG), a molecule derived from the Antarctic marine sponge Dendrilla membranosa. We used in vitro and in vivo approaches to establish DHG properties. Human peripheral blood mononuclear cells (PBMC) and human keratinocytes cell line (HaCaT cells) were used as in vitro system, whereas a model of murine cutaneous irritation was adopted for in vivo studies. We observed that DHG reduces dose dependently the proliferative response and viability of mitogen stimulated PBMC. In addition, DHG induces apoptosis as revealed by AnnexinV staining and downregulates the phosphorylation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), signal transducer and activator of transcription (STAT) and extracellular signal–regulated kinase (ERK) at late time points. These effects were accompanied by down-regulation of interleukin 6 (IL-6) production, slight decrease of IL-10 and no inhibition of tumor necrosis factor-alpha (TNF-α) secretion. To assess potential properties of DHG in epidermal inflammation we used HaCaT cells; this compound reduces cell growth, viability and migration. Finally, we adopted for the in vivo study the croton oil-induced ear dermatitis murine model of inflammation. Of note, topical use of DHG significantly decreased mouse ear edema. These results suggest that DHG exerts anti-inflammatory effects and its anti-edema activity in vivo strongly supports its potential therapeutic application in inflammatory cutaneous diseases.
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Affiliation(s)
- Elena Ciaglia
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Via Salvatore Allende, 84081 Baronissi Salerno, Italy.
| | - Anna Maria Malfitano
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 84084 Fisciano, Salerno, Italy.
| | - Chiara Laezza
- Department of Biology and Cellular and Molecular Pathology, University of Naples Federico II, Via Pansini, 80131 Naples, Italy.
- Institute of Endocrinology and Experimental Oncology, IEOS CNR, Via Pansini 5, 80131 Naples, Italy.
| | - Angelo Fontana
- Bio-Organic Chemistry Unit, Institute of Biomolecular Chemistry-CNR, Via Campi Flegrei 34, Pozzuoli, 80131 Naples; Italy, (A.F.).
| | - Genoveffa Nuzzo
- Bio-Organic Chemistry Unit, Institute of Biomolecular Chemistry-CNR, Via Campi Flegrei 34, Pozzuoli, 80131 Naples; Italy, (A.F.).
| | - Adele Cutignano
- Bio-Organic Chemistry Unit, Institute of Biomolecular Chemistry-CNR, Via Campi Flegrei 34, Pozzuoli, 80131 Naples; Italy, (A.F.).
| | - Mario Abate
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Via Salvatore Allende, 84081 Baronissi Salerno, Italy.
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
| | - Maurizio Bifulco
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Via Salvatore Allende, 84081 Baronissi Salerno, Italy.
- CORPOREA-Fondazione Idis-Città della Scienza, via Coroglio 104 e 57, 80124 Naples, Italy.
| | - Patrizia Gazzerro
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 84084 Fisciano, Salerno, Italy.
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Pelin M, De Iudicibus S, Londero M, Spizzo R, Dei Rossi S, Martelossi S, Ventura A, Decorti G, Stocco G. Thiopurine Biotransformation and Pharmacological Effects: Contribution of Oxidative Stress. Curr Drug Metab 2017; 17:542-9. [PMID: 26935390 DOI: 10.2174/1389200217666160303104153] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 02/18/2016] [Accepted: 02/29/2016] [Indexed: 11/22/2022]
Abstract
BACKGROUND Thiopurine antimetabolites are important agents for the treatment of severe diseases, such as acute lymphoblastic leukemia and inflammatory bowel disease. Their pharmacological actions depend on biotransformation into active thioguanine-nucleotides; intracellular metabolism is mediated by enzymes of the salvage pathway of nucleotide synthesis and relies on polymorphic enzymes involved in thiopurines' catabolism such as thiopurine-S-methyl transferase. Given the enzymes involved in thiopurines' metabolism, it is reasonable to hypothesize that these drugs are able to induce significant oxidative stress conditions, possibly altering their pharmacological activity. METHODS A systemic search of peer-reviewed scientific literature in bibliographic databases has been carried out. Both clinical and preclinical studies as well as mechanistic studies have been included to shed light on the role of oxidative stress in thiopurines' pharmacological effects. RESULTS Sixty-nine papers were included in our review, allowing us to review the contribution of oxidative stress in the pharmacological action of thiopurines. Thiopurines are catabolized in the liver by xanthine oxidase, with potential production of reactive oxidative species and azathioprine is converted into mercaptopurine by a reaction with reduced glutathione, that, in some tissues, may be facilitated by glutathione- S-transferase (GST). A clear role of GSTM1 in modulating azathioprine cytotoxicity, with a close dependency on superoxide anion production, has been recently demonstrated. Interestingly, recent genome-wide association studies have shown that, for both azathioprine in inflammatory bowel disease and mercaptopurine in acute lymphoblastic leukemia, treatment effects on patients' white blood cells are related to variants of a gene, NUDT15, involved in biotransformation of oxidated nucleotides. CONCLUSIONS Basing on previous evidences published in literature, oxidative stress may contribute to thiopurine effects in significant ways that, however, are still not completely elucidated.
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Affiliation(s)
| | | | | | | | | | | | | | - Giuliana Decorti
- University of Trieste, Department of Life Sciences, Via A. Fleming 22, Trieste, I-34127, Italy.
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Pelin M, Fusco L, León V, Martín C, Criado A, Sosa S, Vázquez E, Tubaro A, Prato M. Differential cytotoxic effects of graphene and graphene oxide on skin keratinocytes. Sci Rep 2017; 7:40572. [PMID: 28079192 PMCID: PMC5227695 DOI: 10.1038/srep40572] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 12/08/2016] [Indexed: 12/18/2022] Open
Abstract
Impressive properties make graphene-based materials (GBMs) promising tools for nanoelectronics and biomedicine. However, safety concerns need to be cleared before mass production of GBMs starts. As skin, together with lungs, displays the highest exposure to GBMs, it is of fundamental importance to understand what happens when GBMs get in contact with skin cells. The present study was carried out on HaCaT keratinocytes, an in vitro model of skin toxicity, on which the effects of four GBMs were evaluated: a few layer graphene, prepared by ball-milling treatment (FLG), and three samples of graphene oxide (GOs, a research-grade GO1, and two commercial GOs, GO2 and GO3). Even though no significant effects were observed after 24 h, after 72 h the less oxidized compound (FLG) was the less cytotoxic, inducing mitochondrial and plasma-membrane damages with EC50s of 62.8 μg/mL (WST-8 assay) and 45.5 μg/mL (propidium iodide uptake), respectively. By contrast, the largest and most oxidized compound, GO3, was the most cytotoxic, inducing mitochondrial and plasma-membrane damages with EC50s of 5.4 and 2.9 μg/mL, respectively. These results suggest that only high concentrations and long exposure times to FLG and GOs could impair mitochondrial activity associated with plasma membrane damage, suggesting low cytotoxic effects at the skin level.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.,Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy
| | - Laura Fusco
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy
| | - Verónica León
- Department of Organic Chemistry, Facultad de Ciencias y Tecnologías Químicas-IRICA, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Cristina Martín
- Department of Organic Chemistry, Facultad de Ciencias y Tecnologías Químicas-IRICA, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Alejandro Criado
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.,CIC BiomaGUNE, Parque Tecnológico de San Sebastián, Paseo Miramón, 182, 20009 San Sebastián (Guipúzcoa), Spain
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Ester Vázquez
- Department of Organic Chemistry, Facultad de Ciencias y Tecnologías Químicas-IRICA, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.,CIC BiomaGUNE, Parque Tecnológico de San Sebastián, Paseo Miramón, 182, 20009 San Sebastián (Guipúzcoa), Spain.,Basque Foundation for Science, Ikerbasque, Bilbao 48013, Spain
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29
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Tartaglione L, Pelin M, Morpurgo M, Dell'Aversano C, Montenegro J, Sacco G, Sosa S, Reimer JD, Ciminiello P, Tubaro A. An aquarium hobbyist poisoning: Identification of new palytoxins in Palythoa cf. toxica and complete detoxification of the aquarium water by activated carbon. Toxicon 2016; 121:41-50. [DOI: 10.1016/j.toxicon.2016.08.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/15/2016] [Accepted: 08/17/2016] [Indexed: 11/28/2022]
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30
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Stocco G, Lanzi G, Yue F, Giliani S, Sasaki K, Tommasini A, Pelin M, Martelossi S, Ventura A, Decorti G. Patients' Induced Pluripotent Stem Cells to Model Drug Induced Adverse Events: A Role in Predicting Thiopurine Induced Pancreatitis? Curr Drug Metab 2016; 17:91-8. [PMID: 26526832 DOI: 10.2174/1389200216666151103120220] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 10/12/2015] [Accepted: 10/30/2015] [Indexed: 12/14/2022]
Abstract
Induced pluripotent stem cells (iPSC) can be produced from adult cells by transfecting them with a definite set of pluripotency-associated genes. Under adequate growth conditions and stimulation iPSC can differentiate to almost every somatic lineage in the body. Patients' derived iPSC are an innovative model to study mechanisms of adverse drug reactions in individual patients and in cell types that cannot be easily obtained from human subjects. Proof-of concept studies with known toxicants have been performed for liver, cardiovascular and central nervous system cells: neurons obtained from iPSC have been used to elucidate the mechanism of chemotherapy-induced peripheral neuropathy by evaluating the effects of neurotoxic drugs such as vincristine. However, no study has been performed yet on pancreatic tissue and drug induced pancreatitis. Thiopurines (azathioprine and mercaptopurine) are immunosuppressive antimetabolite drugs, commonly used to treat Crohn's disease. About 5% of Crohn's disease patients treated with thiopurines develop pancreatitis, a severe idiosyncratic adverse event; these patients have to stop thiopurine administration and may require medical treatment, with significant personal and social costs. Molecular mechanism of thiopurine induced pancreatitis (TIP) is currently unknown and no fully validated biomarker is available to assist clinicians in preventing this adverse event. Hence, in this review we have reflected upon the probable research applications of exocrine pancreatic cells generated from patient specific iPS cells. Such pancreatic cells can provide excellent insights into the molecular mechanism of TIP. In particular three hypotheses on the mechanism of TIP could be explored: drug biotransformation, innate immunity and adaptative immunity.
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Affiliation(s)
- Gabriele Stocco
- University of Trieste, Department of Life Sciences, Via A. Fleming 22, Trieste, I-34127, Italy.
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31
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Pelin M, Florio C, Ponti C, Lucafò M, Gibellini D, Tubaro A, Sosa S. Pro-inflammatory effects of palytoxin: an in vitro study on human keratinocytes and inflammatory cells. Toxicol Res (Camb) 2016; 5:1172-1181. [PMID: 30090423 PMCID: PMC6060726 DOI: 10.1039/c6tx00084c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/13/2016] [Indexed: 12/14/2022] Open
Abstract
Palytoxin (PLTX) is one of the most harmful marine toxins known so far. Although the ingestion of contaminated seafood is the most dangerous exposure route for humans, cutaneous and inhalational exposures are far more frequent, and can cause strong inflammatory reactions. However, little is known about the inflammatory events that follow the cutaneous exposure to the toxin. In this study, we investigated (1) the effects of both short (2 h) and long (24 h) term exposures of HaCaT keratinocytes to a sub-cytotoxic PLTX concentration on pro-inflammatory mediator gene expression and release and (2) the effect of PLTX-conditioned HaCaT cell media on undifferentiated (monocytes) and differentiated (macrophages; immature dendritic cells, iDCs; mature dendritic cells, mDCs) THP-1 cells. At 10-11 M, PLTX induced interleukin (IL)-6 and IL-8 release from HaCaT keratinocytes after 24 h of continuous exposure to the toxin, as well as after 23 h in toxin-free medium preceded by 1 h exposure to PLTX. Under the same experimental conditions, release of the inflammatory mediators prostaglandin-E2 and histamine was also found after both short and long exposures to the toxin. The conditioned media collected from HaCaT cells treated with PLTX increased the migration of the differentiated and undifferentiated THP-1 cells (potency rank order: monocytes ≥ iDCs > mDCs > macrophages) but did not induce cell differentiation. These results indicate that keratinocytes can be actively involved in the recruitment of inflammatory cells in response to cutaneous contact with PLTX. The lack of a significant effect on monocyte differentiation towards mature immune cells suggests that PLTX is endowed with irritant rather than sensitizing properties.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences , University of Trieste , 34127 Trieste , Italy . ; Tel: +39-040-5588835
| | - Chiara Florio
- Department of Life Sciences , University of Trieste , 34127 Trieste , Italy . ; Tel: +39-040-5588835
| | - Cristina Ponti
- Department of Life Sciences , University of Trieste , 34127 Trieste , Italy . ; Tel: +39-040-5588835
| | - Marianna Lucafò
- Department of Medical , Surgical and Health Sciences , University of Trieste , 34127 Trieste , Italy
| | - Davide Gibellini
- Department of Pathology and Diagnostic , University of Verona , 35124 Verona , Italy
| | - Aurelia Tubaro
- Department of Life Sciences , University of Trieste , 34127 Trieste , Italy . ; Tel: +39-040-5588835
| | - Silvio Sosa
- Department of Life Sciences , University of Trieste , 34127 Trieste , Italy . ; Tel: +39-040-5588835
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32
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Brovedani V, Sosa S, Poli M, Forino M, Varello K, Tubaro A, Pelin M. A revisited hemolytic assay for palytoxin detection: Limitations for its quantitation in mussels. Toxicon 2016; 119:225-33. [PMID: 27343702 DOI: 10.1016/j.toxicon.2016.06.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 06/17/2016] [Accepted: 06/21/2016] [Indexed: 12/21/2022]
Abstract
Palytoxin (PLTX) and its analogues have been detected as seafood contaminants associated with a series of human foodborne poisonings. Due to a number of fatalities ascribed to the ingestion of PLTX-contaminated marine organisms, the development of methods for its detection in seafood has been recommended by the European Food Safety Authority (EFSA). Due to its feasibility, the spectrophotometric hemolytic assay is widely used to detect PLTX in different matrices, even though a standardized protocol is still lacking. Thus, on the basis of available assay procedures, a new standardized protocol was set up using purified human erythrocytes exposed to PLTX (working range: 3.9 × 10(-10)-2.5 × 10(-8) M) in a K(+)-free phosphate buffered saline solution, employing a 5 h incubation at 41 °C. An intra-laboratory characterization demonstrated its sensitivity (limit of detection, LOD = 1.4 × 10(-10) M and quantitation, LOQ = 3.4 × 10(-10) M), accuracy (bias = -0.8%), repeatability (RSDr = 15% and 6% for intra- and inter-day repeatability, respectively) and specificity. However, the standardized method seems not to be suitable for PLTX quantitation in complex matrices, such as mussel (Mytilus galloprovincialis) extracts, at least below the limit suggested by EFSA (30 μg PLTXs/Kg shellfish meat). Thus, the hemolytic assay for PLTX quantitation in seafood should be used only after a careful evaluation of the specific matrix effects.
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Affiliation(s)
- Valentina Brovedani
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127, Trieste, Italy.
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127, Trieste, Italy.
| | - Mark Poli
- U.S. Army Medical Research Institute of Infectious Diseases, Ft Detrick, MD, United States.
| | - Martino Forino
- Department of Pharmacy, University of Napoli Federico II, 80131, Napoli, Italy.
| | - Katia Varello
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Torino, Italy.
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127, Trieste, Italy.
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127, Trieste, Italy.
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33
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Cuzzoni E, De Iudicibus S, Stocco G, Favretto D, Pelin M, Messina G, Ghio L, Monti E, Pasini A, Montini G, Decorti G. In vitro sensitivity to methyl-prednisolone is associated with clinical response in pediatric idiopathic nephrotic syndrome. Clin Pharmacol Ther 2016; 100:268-74. [PMID: 27007551 DOI: 10.1002/cpt.372] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 02/10/2016] [Accepted: 03/14/2016] [Indexed: 12/17/2022]
Abstract
The aim of this study was to evaluate the in vitro steroid sensitivity as a predictor of clinical response to glucocorticoids in childhood idiopathic nephrotic syndrome (INS). Seventy-four patients (median age 4.33, interquartile range [IQR] 2.82-7.23; 63.5% male) were enrolled in a prospective multicenter study: in vitro steroid inhibition of patients' peripheral blood mononuclear cell proliferation was evaluated by [methyl-(3) H] thymidine incorporation assay at disease onset (T0) and after 4 weeks (T4) of treatment. Steroid dependence was associated with increased in vitro sensitivity at T4 assessed both as drug concentration inducing 50% of inhibition (IC50 ; odds ratio [OR] = 0.48, 95% confidence interval [CI] = 0.24-0.85; P = 0.0094) and maximum inhibition at the highest drug concentration (Imax ; OR = 1.13, 95% CI = 1.02-1.31; P = 0.017). IC50 > 4.4 nM and Imax < 92% at T4 were good predictors for optimal clinical response. These results suggest that this test may be useful for predicting the response to glucocorticoid therapy in pediatric INS.
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Affiliation(s)
- E Cuzzoni
- PhD, School in Sciences of Reproduction and Development, University of Trieste, Trieste, Italy
| | - S De Iudicibus
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy
| | - G Stocco
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - D Favretto
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy
| | - M Pelin
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - G Messina
- Policlinico Giovanni XIII di Bari, Bari, Italy
| | - L Ghio
- Pediatric Nephrology and Dialysis Unit, Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - E Monti
- Nephrology and Dialysis Unit, Department of Pediatrics, Bologna, Italy
| | - A Pasini
- Nephrology and Dialysis Unit, Department of Pediatrics, Bologna, Italy
| | - G Montini
- Pediatric Nephrology and Dialysis Unit, Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - G Decorti
- Department of Life Sciences, University of Trieste, Trieste, Italy
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34
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35
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Pelin M, Brovedani V, Sosa S, Tubaro A. Palytoxin-Containing Aquarium Soft Corals as an Emerging Sanitary Problem. Mar Drugs 2016; 14:E33. [PMID: 26861356 PMCID: PMC4771986 DOI: 10.3390/md14020033] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [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: 12/01/2015] [Revised: 01/26/2016] [Accepted: 01/27/2016] [Indexed: 01/24/2023] Open
Abstract
Palytoxin (PLTX), one the most potent marine toxins, and/or its analogs, have been identified in different marine organisms, such as Palythoa soft corals, Ostreopsis dinoflagellates, and Trichodesmium cyanobacteria. Although the main concern for human health is PLTXs entrance in the human food chain, there is growing evidence of adverse effects associated with inhalational, cutaneous, and/or ocular exposure to aquarium soft corals contaminated by PLTXs or aquaria waters. Indeed, the number of case reports describing human poisonings after handling these cnidarians is continuously increasing. In general, the signs and symptoms involve mainly the respiratory (rhinorrhea and coughing), skeletomuscular (myalgia, weakness, spasms), cardiovascular (electrocardiogram alterations), gastrointestinal (nausea), and nervous (paresthesia, ataxia, tremors) systems or apparates. The widespread phenomenon, the entity of the signs and symptoms of poisoning and the lack of control in the trade of corals as aquaria decorative elements led to consider these poisonings an emerging sanitary problem. This review summarizes literature data on human poisonings due to, or ascribed to, PLTX-containing soft corals, focusing on the different PLTX congeners identified in these organisms and their toxic potential.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
| | - Valentina Brovedani
- Department of Life Sciences, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
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Pelin M, Forino M, Brovedani V, Tartaglione L, Dell'Aversano C, Pistocchi R, Poli M, Sosa S, Florio C, Ciminiello P, Tubaro A. Ovatoxin-a, A Palytoxin Analogue Isolated from Ostreopsis cf. ovata Fukuyo: Cytotoxic Activity and ELISA Detection. Environ Sci Technol 2016; 50:1544-1551. [PMID: 26714047 DOI: 10.1021/acs.est.5b04749] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study provides the first evaluation of the cytotoxic effects of the recently identified palytoxin (PLTX) analog, ovatoxin-a (OVTX-a), the major toxin produced by Ostreopsis cf. ovata in the Mediterranean Sea. Its increasing detection during Ostreopsis blooms and in seafood highlights the need to characterize its toxic effects and to set up appropriate detection methods. OVTX-a is about 100 fold less potent than PLTX in reducing HaCaT cells viability (EC50 = 1.1 × 10(-9) M vs 1.8 × 10(-11) M, MTT test) in agreement with a reduced binding affinity (Kd = 1.2 × 10(-9) vs 2.7 × 10(-11) M, saturation experiments on intact cells). Similarly, OVTX-a hemolytic effect is lower than that of the reference PLTX compound. Ost-D shows the lowest cytotoxicity toward HaCaT keratinocytes, suggesting the lack of a hydroxyl group at C44 as a critical feature for PLTXs cytotoxic effects. A sandwich ELISA developed for PLTX detects also OVTX-a in a sensitive (LOD = 4.2 and LOQ = 5.6 ng/mL) and accurate manner (Bias = 0.3%), also in O. cf. ovata extracts and contaminated mussels. Although in vitro OVTX-a appears less toxic than PLTX, its cytotoxicity at nanomolar concentrations after short exposure time rises some concern for human health. The sandwich ELISA can be a viable screening method for OVTXs detection in monitoring program.
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Affiliation(s)
- Marco Pelin
- Department of Life Science, University of Trieste , 34127 Trieste, Italy
| | - Martino Forino
- Department of Pharmacy, University of Napoli Federico II , 80131 Napoli, Italy
| | | | - Luciana Tartaglione
- Department of Pharmacy, University of Napoli Federico II , 80131 Napoli, Italy
| | | | - Rossella Pistocchi
- Interdepartmental Center for Research in Environmental Sciences, University of Bologna , 481230 Ravenna, Italy
| | - Mark Poli
- U.S. Army Medical Research Institute of Infectious Diseases, Ft. Detrick, Maryland, 21701-5011 United States
| | - Silvio Sosa
- Department of Life Science, University of Trieste , 34127 Trieste, Italy
| | - Chiara Florio
- Department of Life Science, University of Trieste , 34127 Trieste, Italy
| | - Patrizia Ciminiello
- Department of Pharmacy, University of Napoli Federico II , 80131 Napoli, Italy
| | - Aurelia Tubaro
- Department of Life Science, University of Trieste , 34127 Trieste, Italy
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Cuzzoni E, De Iudicibus S, Franca R, Stocco G, Lucafò M, Pelin M, Favretto D, Pasini A, Montini G, Decorti G. Glucocorticoid pharmacogenetics in pediatric idiopathic nephrotic syndrome. Pharmacogenomics 2015; 16:1631-48. [PMID: 26419298 DOI: 10.2217/pgs.15.101] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Idiopathic nephrotic syndrome represents the most common type of primary glomerular disease in children: glucocorticoids (GCs) are the first-line therapy, even if considerable interindividual differences in their efficacy and side effects have been reported. Immunosuppressive and anti-inflammatory effects of these drugs are mainly due to the GC-mediated transcription regulation of pro- and anti-inflammatory genes. This mechanism of action is the result of a complex multistep pathway that involves the glucocorticoid receptor and several other proteins, encoded by polymorphic genes. Aim of this review is to highlight the current knowledge on genetic variants that could affect GC response, particularly focusing on children with idiopathic nephrotic syndrome.
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Affiliation(s)
- Eva Cuzzoni
- Graduate School in Reproduction & Developmental Sciences, University of Trieste, I-34127 Trieste, Italy
| | - Sara De Iudicibus
- Institute for Maternal & Child Health IRCCS Burlo Garofolo, I-34137 Trieste, Italy
| | - Raffaella Franca
- Institute for Maternal & Child Health IRCCS Burlo Garofolo, I-34137 Trieste, Italy
| | - Gabriele Stocco
- Department of Life Sciences, University of Trieste, I-34127 Trieste, Italy
| | - Marianna Lucafò
- Department of Medical, Surgical and Health Sciences, University of Trieste, I-34127 Trieste, Italy
| | - Marco Pelin
- Department of Life Sciences, University of Trieste, I-34127 Trieste, Italy
| | - Diego Favretto
- Institute for Maternal & Child Health IRCCS Burlo Garofolo, I-34137 Trieste, Italy
| | - Andrea Pasini
- Nephrology and Dialysis Unit, Department of Pediatrics, Azienda Ospedaliera Universitaria Sant'Orsola-Malpighi, I-40138 Bologna, Italy
| | - Giovanni Montini
- Pediatric Nephrology and Dialysis Unit, Department of Clinical Sciences and Community Health, University of Milan, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, I-20122 Milano, Italy
| | - Giuliana Decorti
- Department of Life Sciences, University of Trieste, I-34127 Trieste, Italy
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Pelin M, De Iudicibus S, Fusco L, Taboga E, Pellizzari G, Lagatolla C, Martelossi S, Ventura A, Decorti G, Stocco G. Role of oxidative stress mediated by glutathione-s-transferase in thiopurines' toxic effects. Chem Res Toxicol 2015; 28:1186-95. [PMID: 25928802 DOI: 10.1021/acs.chemrestox.5b00019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Azathioprine (AZA), 6-mercaptopurine (6-MP), and 6-thioguanine (6-TG) are antimetabolite drugs, widely used as immunosuppressants and anticancer agents. Despite their proven efficacy, a high incidence of toxic effects in patients during standard-dose therapy is recorded. The aim of this study is to explain, from a mechanistic point of view, the clinical evidence showing a significant role of glutathione-S-transferase (GST)-M1 genotype on AZA toxicity in inflammatory bowel disease patients. To this aim, the human nontumor IHH and HCEC cell lines were chosen as predictive models of the hepatic and intestinal tissues, respectively. AZA, but not 6-MP and 6-TG, induced a concentration-dependent superoxide anion production that seemed dependent on GSH depletion. N-Acetylcysteine reduced the AZA antiproliferative effect in both cell lines, and GST-M1 overexpression increased both superoxide anion production and cytotoxicity, especially in transfected HCEC cells. In this study, an in vitro model to study thiopurines' metabolism has been set up and helped us to demonstrate, for the first time, a clear role of GST-M1 in modulating AZA cytotoxicity, with a close dependency on superoxide anion production. These results provide the molecular basis to shed light on the clinical evidence suggesting a role of GST-M1 genotype in influencing the toxic effects of AZA treatment.
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Affiliation(s)
- Marco Pelin
- †Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Sara De Iudicibus
- ‡Institute for Maternal and Child Health IRCCS Burlo Garofolo, 34137 Trieste, Italy
| | - Laura Fusco
- †Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Eleonora Taboga
- †Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Giulia Pellizzari
- †Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Cristina Lagatolla
- †Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Stefano Martelossi
- ‡Institute for Maternal and Child Health IRCCS Burlo Garofolo, 34137 Trieste, Italy
| | - Alessandro Ventura
- ‡Institute for Maternal and Child Health IRCCS Burlo Garofolo, 34137 Trieste, Italy.,§Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy
| | - Giuliana Decorti
- †Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Gabriele Stocco
- †Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
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Lucafo M, Iudicibus S, Silvestre A, Pelin M, Candussio L, Martelossi S, Tommasini A, Piscianz E, Ventura A, Decorti G. Long Noncoding RNA GAS5: A Novel Marker Involved in Glucocorticoid Response. Curr Mol Med 2015; 15:94-9. [DOI: 10.2174/1566524015666150114122354] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 07/23/2014] [Accepted: 07/24/2014] [Indexed: 11/22/2022]
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Tubaro A, Kilcoyne J, Pelin M, D’Orlando E, Beltramo D, Nulty C, Hess P, Sosa S. 45. Acute oral toxicity of three azaspiracid analogues in mice. Toxicon 2014. [DOI: 10.1016/j.toxicon.2014.08.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Pelin M, Sosa S, Pacor S, Tubaro A, Florio C. The marine toxin palytoxin induces necrotic death in HaCaT cells through a rapid mitochondrial damage. Toxicol Lett 2014; 229:440-50. [PMID: 25066017 DOI: 10.1016/j.toxlet.2014.07.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/21/2014] [Accepted: 07/22/2014] [Indexed: 11/17/2022]
Abstract
Palytoxin (PLTX) is one of the most toxic algal biotoxin known so far. It transforms the Na(+)/K(+)-ATPase into a cationic channel inducing a massive intracellular Na(+) influx. However, from a mechanistic point of view, the features and the intracellular pathways leading to PLTX-induced cell death are still not completely characterized. This study on skin HaCaT keratinocytes demonstrates that PLTX induces necrosis since propidium iodide uptake was observed already after 1 h toxin exposure, an effect that was not lowered by toxin removal. Furthermore, necrotic-like morphological alterations were evidenced by confocal microscopy. Apoptosis occurrence was excluded since no caspases 3/7, caspase 8, and caspase 9 activation as well as no apoptotic bodies formation were recorded. Necrosis was preceded by a very early mitochondrial damage as indicated by JC-1 fluorescence shift, recorded already after 5 min toxin exposure. This shift was totally abolished when Na(+) and Ca(2+) ions were withdrawn from culture medium, whereas cyclosporine-A was ineffective, excluding the occurrence of a controlled biochemical response. These results clearly establish necrosis as the primary mechanism for PLTX-induced cell death in HaCaT cells. The rapidity of mitochondrial damage and the consequent irreversible necrosis rise serious concerns about the very fast onset of PLTX toxic effects.
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Affiliation(s)
- Marco Pelin
- Department of Life Science, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
| | - Silvio Sosa
- Department of Life Science, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
| | - Sabrina Pacor
- Department of Life Science, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
| | - Aurelia Tubaro
- Department of Life Science, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
| | - Chiara Florio
- Department of Life Science, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
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42
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Stocco G, Pelin M, Franca R, De Iudicibus S, Cuzzoni E, Favretto D, Martelossi S, Ventura A, Decorti G. Pharmacogenetics of azathioprine in inflammatory bowel disease: A role for glutathione-S-transferase? World J Gastroenterol 2014; 20:3534-3541. [PMID: 24707136 PMCID: PMC3974520 DOI: 10.3748/wjg.v20.i13.3534] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/21/2013] [Accepted: 01/20/2014] [Indexed: 02/06/2023] Open
Abstract
Azathioprine is a purine antimetabolite drug commonly used to treat inflammatory bowel disease (IBD). In vivo it is active after reaction with reduced glutathione (GSH) and conversion to mercaptopurine. Although this reaction may occur spontaneously, the presence of isoforms M and A of the enzyme glutathione-S-transferase (GST) may increase its speed. Indeed, in pediatric patients with IBD, deletion of GST-M1, which determines reduced enzymatic activity, was recently associated with reduced sensitivity to azathioprine and reduced production of azathioprine active metabolites. In addition to increase the activation of azathioprine to mercaptopurine, GSTs may contribute to azathioprine effects even by modulating GSH consumption, oxidative stress and apoptosis. Therefore, genetic polymorphisms in genes for GSTs may be useful to predict response to azathioprine even if more in vitro and clinical validation studies are needed.
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Ciminiello P, Dell'Aversano C, Dello Iacovo E, Forino M, Tartaglione L, Pelin M, Sosa S, Tubaro A, Chaloin O, Poli M, Bignami G. Stereoisomers of 42-hydroxy palytoxin from Hawaiian Palythoa toxica and P. tuberculosa: stereostructure elucidation, detection, and biological activities. J Nat Prod 2014; 77:351-357. [PMID: 24512352 DOI: 10.1021/np4009514] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Palytoxin ranks among the most potent marine biotoxins. Its lethality was well known to native Hawaiians that used to smear a "moss" containing the toxin on their spears to cause instant death to their victims. Human intoxications due to exposure to palytoxin and to its many congeners have been reported worldwide. Currently, palytoxins constitute the main threat to public health across the Mediterranean Sea. In the present work we report on the isolation and stereostructural determination of a new palytoxin analogue from a Hawaiian Palythoa tuberculosa sample. This new toxin is a stereoisomer of 42-hydroxypalytoxin isolated from Palythoa toxica. The whole absolute configuration of this latter toxin is also reported in the paper. Interestingly, the two 42-hydroxypalytoxins do not share the same biological activity. The stereoisomer from P. tuberculosa showed cytotoxicity toward skin HaCaT keratinocytes approximately 1 order of magnitude lower than that of 42-hydroxypalytoxin from P. toxica and about 2 orders of magnitude lower than that of palytoxin itself. This finding holds the prospect of interesting structure-activity relationship evaluations in the future.
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Affiliation(s)
- Patrizia Ciminiello
- Department of Pharmacy, University of Napoli "Federico II" , Via D. Montesano 49, 80131 Napoli, Italy
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Vassallo A, De Tommasi N, Merfort I, Sanogo R, Severino L, Pelin M, Della Loggia R, Tubaro A, Sosa S. Steroids with anti-inflammatory activity from Vernonia nigritiana Oliv. & Hiern. Phytochemistry 2013; 96:288-298. [PMID: 24074552 DOI: 10.1016/j.phytochem.2013.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 08/27/2013] [Accepted: 09/02/2013] [Indexed: 06/02/2023]
Abstract
The leaves of Vernonia nigritiana Oliv. & Hiern. (Asteraceae) were investigated for their in vivo topical anti-inflammatory properties, following a bioassay-oriented fractionation approach. Petroleum ether, chloroform and chloroform-methanol extracts inhibited the Croton oil-induced ear dermatitis in mice. The chloroform extract was only about half as active as the non steroidal anti-inflammatory drug indomethacin (ID50=237 and 93 μg/cm(2), respectively). Phytochemical investigation of this extract led to the isolation of nine polyhydroxylated stigmasterol glycosides and six polyhydroxylated stigmasterols. Their structures were elucidated by NMR, MS and chemical methods. Each compound exerted a significant anti-oedema activity, the most active being 1 (3β-O-β-D-glucopyranosyloxy-5α-stigmasta-7,9(11),24(28)Z-triene-6β,16β,26,29-tetrol) and 3 (3β-O-β-D-glucopyranosyloxy-5α-stigmasta-7,9(11),24(28)Z-triene-6β,16β,29-triol), only two and five fold less potent than the steroidal drug hydrocortisone (ID50=0.10, 0.21 and 0.04 μmol/cm(2), respectively). Compound 1 (50 μM) also completely inhibited the transcription factor NF-κB in vitro.
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Affiliation(s)
- Antonio Vassallo
- Department of Science, University of Basilicata, 85100 Potenza, Italy
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Pelin M, Boscolo S, Poli M, Sosa S, Tubaro A, Florio C. Characterization of palytoxin binding to HaCaT cells using a monoclonal anti-palytoxin antibody. Mar Drugs 2013; 11:584-98. [PMID: 23442788 PMCID: PMC3705359 DOI: 10.3390/md11030584] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 01/12/2013] [Accepted: 02/15/2013] [Indexed: 01/14/2023] Open
Abstract
Palytoxin (PLTX) is the reference compound for a group of potent marine biotoxins, for which the molecular target is Na+/K+-ATPase. Indeed, ouabain (OUA), a potent blocker of the pump, is used to inhibit some PLTX effects in vitro. However, in an effort to explain incomplete inhibition of PLTX cytotoxicity, some studies suggest the possibility of two different binding sites on Na+/K+-ATPase. Hence, this study was performed to characterize PLTX binding to intact HaCaT keratinocytes and to investigate the ability of OUA to compete for this binding. PLTX binding to HaCaT cells was demonstrated by immunocytochemical analysis after 10 min exposure. An anti-PLTX monoclonal antibody-based ELISA showed that the binding was saturable and reversible, with a K(d) of 3 × 10-10 M. However, kinetic experiments revealed that PLTX binding dissociation was incomplete, suggesting an additional, OUA-insensitive, PLTX binding site. Competitive experiments suggested that OUA acts as a negative allosteric modulator against high PLTX concentrations (0.3-1.0 × 10-7 M) and possibly as a non-competitive antagonist against low PLTX concentrations (0.1-3.0 × 10-9 M). Antagonism was supported by PLTX cytotoxicity inhibition at OUA concentrations that displaced PLTX binding (1 × 10-5 M). However, this inhibition was incomplete, supporting the existence of both OUA-sensitive and -insensitive PLTX binding sites.
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Affiliation(s)
- Marco Pelin
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy; E-Mails: (M.P.); (S.B.); (S.S.); (C.F.)
| | - Sabrina Boscolo
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy; E-Mails: (M.P.); (S.B.); (S.S.); (C.F.)
| | - Mark Poli
- U.S. Army Medical Research Institute of Infectious Diseases, Ft Detrick, MD 21701, USA; E-Mail:
| | - Silvio Sosa
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy; E-Mails: (M.P.); (S.B.); (S.S.); (C.F.)
| | - Aurelia Tubaro
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy; E-Mails: (M.P.); (S.B.); (S.S.); (C.F.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +39-040-5588835; Fax: +39-040-5583215
| | - Chiara Florio
- Department of Life Sciences, University of Trieste, Via A. Valerio 6, 34127 Trieste, Italy; E-Mails: (M.P.); (S.B.); (S.S.); (C.F.)
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Boscolo S, Pelin M, De Bortoli M, Fontanive G, Barreras A, Berti F, Sosa S, Chaloin O, Bianco A, Yasumoto T, Prato M, Poli M, Tubaro A. Sandwich ELISA assay for the quantitation of palytoxin and its analogs in natural samples. Environ Sci Technol 2013; 47:2034-2042. [PMID: 23339823 DOI: 10.1021/es304222t] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Palytoxins are potent marine biotoxins that have recently become endemic to the Mediterranean Sea, and are becoming more frequently associated with seafood. Due to their high toxicity, suitable methods to quantify palytoxins are needed. Thus, we developed an indirect sandwich ELISA for palytoxin and 42-hydroxy-palytoxin. An intralaboratory study demonstrated sensitivity (limit of detection, LOD = 1.1 ng/mL; limit of quantitation, LOQ = 2.2 ng/mL), accuracy (bias of 2.1%), repeatability (RSDr = 6% and 9% for intra- and interassay variability, respectively) and specificity: other common marine toxins (okadaic acid, domoic acid, saxitoxin, brevetoxin-3, and yessotoxin) do not cross-react in this assay. It performed well in three different matrices: observed LOQs were 11.0, 9.6, and 2.4 ng/mL for mussel extracts, algal net samples and seawater, respectively, with good accuracy and precision. The LOQ in seafood is 11 μg palytoxin/kg mussel meat, lower than that of the most common detection technique, LC-MS/MS.
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Affiliation(s)
- S Boscolo
- Department of Life Sciences, University of Trieste, Via L. Giorgieri 10, 34127 Trieste, Italy
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Pelin M, Ponti C, Sosa S, Gibellini D, Florio C, Tubaro A. Oxidative stress induced by palytoxin in human keratinocytes is mediated by a H+-dependent mitochondrial pathway. Toxicol Appl Pharmacol 2013; 266:1-8. [DOI: 10.1016/j.taap.2012.10.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 09/26/2012] [Accepted: 10/15/2012] [Indexed: 01/15/2023]
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Del Favero G, Sosa S, Pelin M, D’Orlando E, Florio C, Lorenzon P, Poli M, Tubaro A. Sanitary problems related to the presence of Ostreopsis spp. in the Mediterranean Sea: a multidisciplinary scientific approach. Annali dell'Istituto Superiore di Sanità 2012; 48:407-14. [DOI: 10.4415/ann_12_04_08] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Giorgia Del Favero
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Silvio Sosa
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Marco Pelin
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Elisabetta D’Orlando
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Chiara Florio
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Paola Lorenzon
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - Mark Poli
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, USA
| | - Aurelia Tubaro
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
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Pelin M, Sosa S, Della Loggia R, Poli M, Tubaro A, Decorti G, Florio C. The cytotoxic effect of palytoxin on Caco-2 cells hinders their use for in vitro absorption studies. Food Chem Toxicol 2011; 50:206-11. [PMID: 22019895 DOI: 10.1016/j.fct.2011.10.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 10/03/2011] [Accepted: 10/05/2011] [Indexed: 11/16/2022]
Abstract
Palytoxin (PLTX), found in Palythoa zoanthids and Ostreopsis dinoflagellates, has also been detected in crabs and fish, through which it can enter into the food chain. Indeed, PLTX is considered the causative agent of several cases of human seafood poisoning resulting in systemic symptoms. Available epidemiological data on PLTX human toxicity suggest that the intestinal tract may be one of its in vivo targets and its potential site of access into the bloodstream. Hence, the purpose of this study was to investigate the suitability of the human intestinal Caco-2 cell line for evaluating PLTX oral absorption. A detailed analysis of PLTX cytotoxicity revealed a high sensitivity of Caco-2 cells: 4h toxin exposure reduced mitochondrial activity (MTT assay, EC(50) of 8.9±3.7×10(-12)M), cell density (SRB assay, EC(50) of 2.0±0.6×10(-11)M) and membrane integrity (LDH release, EC(50) of 4.5±1.4×10(-9)M and PI uptake, EC(50) of 1.0±0.8×10(-8)M). After low PLTX concentration (1.0×10(-11)M) exposure for 1-8h, followed by 24h recovery time in toxin-free medium, cell density reduction was only partially reversible. These results indicate that, due to the high susceptibility to PLTX cytotoxic effects, Caco-2 cells do not represent an appropriate and reliable model for investigating intestinal barrier permeation by this toxin.
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Affiliation(s)
- M Pelin
- Department of Life Sciences, University of Trieste, Via Valerio 6, 34127 Trieste, Italy.
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Zanette C, Pelin M, Crosera M, Adami G, Bovenzi M, Larese FF, Florio C. Silver nanoparticles exert a long-lasting antiproliferative effect on human keratinocyte HaCaT cell line. Toxicol In Vitro 2011; 25:1053-60. [PMID: 21501681 DOI: 10.1016/j.tiv.2011.04.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 04/01/2011] [Accepted: 04/04/2011] [Indexed: 01/06/2023]
Abstract
For their antibacterial activity, silver nanoparticles (Ag NPs) are largely used in various commercially available products designed to come in direct contact with the skin. In this study we investigated the effects of Ag NPs on skin using the human-derived keratinocyte HaCaT cell line model. Ag NPs caused a concentration- and time-dependent decrease of cell viability, with IC(50) values of 6.8 ± 1.3 μM (MTT assay) and 12 ± 1.2 μM (SRB assay) after 7 days of contact. A 24h treatment, followed by a 6 day recovery period in Ag NPs-free medium, reduced cell viability with almost the same potency (IC(50)s of 15.3 ± 4.6 and 35 ± 20 μM, MTT and SRB assays, respectively). Under these conditions, no evidence of induction of necrotic events (propidium iodide assay) was found. Apocynin, NADPH-oxidase inhibitor, or N(G)-monomethyl-L-argynine, nitric oxide synthase inhibitor, did not prevent NPs-induced reduction of cell viability. TEM analysis of cells exposed to NPs for 24h revealed alteration of nuclear morphology but only a marginal presence of individual NPs inside the cells. These results demonstrate that on HaCaT keratinocytes a relatively short time of contact with Ag NPs causes a long-lasting inhibition of cell growth, not associated with consistent Ag NPs internalization.
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Affiliation(s)
- Caterina Zanette
- Department of Life Sciences, University of Trieste, Via L. Giorgeri 7/9, 34127 Trieste, Italy.
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