Induction of Innate Memory in Human Monocytes Exposed to Mixtures of Bacterial Agents and Nanoparticles
Della Camera, Giacomo (European Commission. Joint Research Centre)
Liu, Tinghao (China-Italy Joint Laboratory of Pharmacobiotechnology for Medical Immunomodulation)
Yang, Wenjie (China-Italy Joint Laboratory of Pharmacobiotechnology for Medical Immunomodulation)
Li, Yang (China-Italy Joint Laboratory of Pharmacobiotechnology for Medical Immunomodulation)
Puntes, Víctor (Institut Català de Nanociència i Nanotecnologia)
Gioria, Sabrina (European Commission. Joint Research Centre)
Italiani, Paola (China-Italy Joint Laboratory of Pharmacobiotechnology for Medical Immunomodulation)
Boraschi, Diana (China-Italy Joint Laboratory of Pharmacobiotechnology for Medical Immunomodulation)

Data:	2022
Resum:	We assessed whether concomitant exposure of human monocytes to bacterial agents and different engineered nanoparticles can affect the induction of protective innate memory, an immune mechanism that affords better resistance to diverse threatening challenges. Monocytes were exposed in vitro to nanoparticles of different chemical nature, shape and size either alone or admixed with LPS, and cell activation was assessed in terms of production of inflammatory (TNFα, IL-6) and anti-inflammatory cytokines (IL-10, IL-1Ra). After return to baseline conditions, cells were re-challenged with LPS and their secondary "memory" response measured. Results show that nanoparticles alone are essentially unable to generate memory, while LPS induced a tolerance memory response (less inflammatory cytokines, equal or increased anti-inflammatory cytokines). LPS-induced tolerance was not significantly affected by the presence of nanoparticles during the memory generation phase, although with substantial donor-to-donor variability. This suggests that, despite the overall lack of significant effects on LPS-induced innate memory, nanoparticles may have donor-specific effects. Thus, future nanosafety assessment and nanotherapeutic strategies will need a personalized approach in order to ensure both the safety and efficacy of nano medical compounds for individual patients.
Ajuts:	European Commission 812661 European Commission 671881
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Innate immunity ; Innate memory ; Nanoparticles ; Bacteria ; LPS ; Monocytes ; Macrophages
Publicat a:	International journal of molecular sciences, Vol. 23, Issue 23 (November 2022) , art. 14655, ISSN 1422-0067

DOI: 10.3390/ijms232314655
PMID: 36498992

15 p, 2.3 MB

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