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Multiparametric in vitro genotoxicity assessment of different variants of amorphous silica nanomaterials in rat alveolar epithelial cells

dc.contributor.authorBrandão, Fátima
dc.contributor.authorCosta, Carla
dc.contributor.authorBessa, Maria João
dc.contributor.authorValdiglesias, Vanessa
dc.contributor.authorHellack, Bryan
dc.contributor.authorHaase, Andrea
dc.contributor.authorFraga, Sónia
dc.contributor.authorTeixeira, João Paulo
dc.date.accessioned2024-02-02T14:04:33Z
dc.date.available2024-02-02T14:04:33Z
dc.date.issued2023-12-01
dc.description.abstractThe hazard posed to human health by inhaled amorphous silica nanomaterials (aSiO2 NM) remains uncertain. Herein, we assessed the cyto- and genotoxicity of aSiO2 NM variants covering different sizes (7, 15, and 40 nm) and surface modifications (unmodified, phosphonate-, amino- and trimethylsilyl-modified) on rat alveolar epithelial (RLE-6TN) cells. Cytotoxicity was evaluated at 24 h after exposure to the aSiO2 NM variants by the lactate dehydrogenase (LDH) release and WST-1 reduction assays, while genotoxicity was assessed using different endpoints: DNA damage (single- and double-strand breaks [SSB and DSB]) by the comet assay for all aSiO2 NM variants; cell cycle progression and γ-H2AX levels (DSB) by flow cytometry for those variants that presented higher cytotoxic and DNA damaging potential. The variants with higher surface area demonstrated a higher cytotoxic potential (SiO2_7, SiO2_15_Unmod, SiO2_15_Amino, and SiO2_15_Phospho). SiO2_40 was the only variant that induced significant DNA damage on RLE-6TN cells. On the other hand, all tested variants (SiO2_7, SiO2_15_Unmod, SiO2_15_Amino, and SiO2_40) significantly increased total γ-H2AX levels. At high concentrations (28 µg/cm2), a decrease in G0/G1 subpopulation was accompanied by a significant increase in S and G2/M sub-populations after exposure to all tested materials except for SiO2_40 which did not affect cell cycle progression. Based on the obtained data, the tested variants can be ranked for its genotoxic DNA damage potential as follows: SiO2_7 = SiO2_40 = SiO2_15_Unmod > SiO2_15_Amino. Our study supports the usefulness of multiparametric approaches to improve the understanding on NM mechanisms of action and hazard prediction.pt_PT
dc.description.sponsorshipThis work was supported by the Portuguese Foundation for Science and Technology (FCT) through ERA-NET SIINN project NanoToxClass (SIINN/0001/2013). This work was also supported by the NanoBioBarriers project (POCI-01-0145-FEDER-031162), co-financed by the Operational Program for Competitiveness and Internationalization (POCI) through European Regional Development Funds (FEDER/FNR); and by the Spanish Ministry of Science and Innovation: MCIN/AEI/10.13039/501100011033 (Grant PID2020-114908GA-I00); and the Ministry of Education, Culture and Sport BEAGAL18/00142 to V. Valdiglesias. F. Brandão (SFRH/BD/101060/2014) and M.J. Bessa (SFRH/BD/12046/2016) are recipients of FCT PhD scholarships. The Doctoral Program in Biomedical Sciences of the ICBAS – University of Porto offered additional funds. S. Fraga thanks FCT for funding through program DL 57/2016 – Norma transitória (Ref. DL-57/INSA-06/2018). Thanks are also due to FCT/MCTES for the financial support to EPIUnit (UIDB/04750/2020) and ITR (LA/P/0064/2020).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationNanotoxicology. 2023 Aug-Sep;17(6-7):511-528. doi: 10.1080/17435390.2023.2265481. Epub 2023 Dec 1.pt_PT
dc.identifier.doi10.1080/17435390.2023.2265481pt_PT
dc.identifier.issn1743-5390
dc.identifier.urihttp://hdl.handle.net/10400.18/9029
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherTaylor and Francispt_PT
dc.relationEstablishing nanomaterial grouping/ classification strategies according to toxicity and biological effects for supporting risk assessment
dc.relationEstablishing grouping strategies according to toxicity and biological effects for silica based manufactured nanomaterials
dc.relationWater Circle – Dissemination of scientific knowledge as a prevention strategy in the domain of water preservation: from university research to secondary school students
dc.relationEpidemiology Research Unit - Institute of Public Health, University of Porto
dc.relationLaboratory for Integrative and Translational Research in Population Health
dc.relation.publisherversionhttps://www.tandfonline.com/doi/full/10.1080/17435390.2023.2265481pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectNanomaterialspt_PT
dc.subjectSilica Nanomaterialspt_PT
dc.subjectLungpt_PT
dc.subjectIn vitropt_PT
dc.subjectGenotoxicitypt_PT
dc.subjectNanotoxicologypt_PT
dc.subjectCytotoxicitypt_PT
dc.subjectGenotoxicidade Ambientalpt_PT
dc.titleMultiparametric in vitro genotoxicity assessment of different variants of amorphous silica nanomaterials in rat alveolar epithelial cellspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleEstablishing nanomaterial grouping/ classification strategies according to toxicity and biological effects for supporting risk assessment
oaire.awardTitleEstablishing grouping strategies according to toxicity and biological effects for silica based manufactured nanomaterials
oaire.awardTitleWater Circle – Dissemination of scientific knowledge as a prevention strategy in the domain of water preservation: from university research to secondary school students
oaire.awardTitleEpidemiology Research Unit - Institute of Public Health, University of Porto
oaire.awardTitleLaboratory for Integrative and Translational Research in Population Health
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/ERA-SIINN%2F0001%2F2013/PT
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oaire.citation.endPage528pt_PT
oaire.citation.issue6-7pt_PT
oaire.citation.startPage511pt_PT
oaire.citation.titleNanotoxicologypt_PT
oaire.citation.volume17pt_PT
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oaire.fundingStream9471 - RIDTI
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person.familyNamePinto Brandão
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person.familyNameValdiglesias
person.familyNameHaase
person.familyNameFraga
person.familyNameRamos Teixeira
person.givenNameMaria de Fátima
person.givenNameCarla
person.givenNameMaria João
person.givenNameVanessa
person.givenNameAndrea
person.givenNameSónia
person.givenNameJoão Paulo
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rcaap.embargofctAcesso de acordo com a política editorial da revista.pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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