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Immunomodulatory Function of Polyvinylpyrrolidone (PVP)-Functionalized Gold Nanoparticles in Vibrio-Stimulated Sea Urchin Immune Cells
Consiglio Nazionale delle Ricerche, Istituto per la Ricerca e l’Innovazione Biomedica (IRIB), Palermo, Italy.ORCID iD: 0000-0002-2403-7989
Consiglio Nazionale delle Ricerche, Istituto per la Ricerca e l’Innovazione Biomedica (IRIB), Palermo, Italy.
Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, Spain.
Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain; Vall d Hebron Institut de Recerca (VHIR), Barcelona, Spain.
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2021 (English)In: Nanomaterials, E-ISSN 2079-4991, Vol. 11, no 10, article id 2646Article in journal (Refereed) Published
Abstract [en]

We investigated the role of the gold nanoparticles functionalized with polyvinylpyrrolidone (PVP–AuNPs) on the innate immune response against an acute infection caused by Vibrio anguillarum in an in vitro immunological nonmammalian next-generation model, the sea urchin Paracentrotus lividus. To profile the immunomodulatory function of PVP–AuNPs (0.1 μg mL−1) in sea urchin immune cells stimulated by Vibrio (10 μg mL−1) for 3 h, we focused on the baseline immunological state of the donor, and we analysed the topography, cellular metabolism, and expression of human cell surface antigens of the exposed cells, as well as the signalling leading the interaction between PVP–AuNPs and the Vibrio-stimulated cells. PVP–AuNPs are not able to silence the inflammatory signalling (TLR4/p38MAPK/NF-κB signalling) that involves the whole population of P. lividus immune cells exposed to Vibrio. However, our findings emphasise the ability of PVP–AuNPs to stimulate a subset of rare cells (defined here as Group 3) that express CD45 and CD14 antigens on their surface, which are known to be involved in immune cell maturation and macrophage activation in humans. Our evidence on how PVP–AuNPs may stimulate sea urchin immune cells represents an important starting point for planning new research work on the topic. 

Place, publisher, year, edition, pages
MDPI, 2021. Vol. 11, no 10, article id 2646
Keywords [en]
proxy for human model, quiescence and immune activation, nanointeraction, PVP–AuNPs antimicrobial function, infected sea urchin immune cells
National Category
Immunology in the medical area Environmental Sciences
Identifiers
URN: urn:nbn:se:oru:diva-95436DOI: 10.3390/nano11102646ISI: 000715572700001Scopus ID: 2-s2.0-85116584726OAI: oai:DiVA.org:oru-95436DiVA, id: diva2:1611367
Available from: 2021-11-15 Created: 2021-11-15 Last updated: 2021-12-29Bibliographically approved

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