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Hélaine C, Amedlous A, Toutain J, Brunaud C, Lebedev O, Marie C, Alliot C, Bernaudin M, Haddad F, Mintova S, Valable S. In vivo biodistribution and tumor uptake of [ 64Cu]-FAU nanozeolite via positron emission tomography Imaging. NANOSCALE 2024; 16:11959-11968. [PMID: 38874227 DOI: 10.1039/d3nr05947b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Nanoparticles have emerged as promising theranostic tools for biomedical applications, notably in the treatment of cancers. However, to fully exploit their potential, a thorough understanding of their biodistribution is imperative. In this context, we prepared radioactive [64Cu]-exchanged faujasite nanosized zeolite ([64Cu]-FAU) to conduct positron emission tomography (PET) imaging tracking in preclinical glioblastoma models. In vivo results revealed a rapid and gradual accumulation over time of intravenously injected [64Cu]-FAU zeolite nanocrystals within the brain tumor, while no uptake in the healthy brain was observed. Although a specific tumor targeting was observed in the brain, the kinetics of uptake into tumor tissue was found to be dependent on the glioblastoma model. Indeed, our results showed a rapid uptake in U87-MG model while in U251-MG glioblastoma model tumor uptake was gradual over the time. Interestingly, a [64Cu] activity, decreasing over time, was also observed in organs of elimination such as kidney and liver without showing a difference in activity between both glioblastoma models. Ex vivo analyses confirmed the presence of zeolite nanocrystals in brain tumor with detection of both Si and Al elements originated from them. This radiolabelling strategy, performed for the first time using nanozeolites, enables precise tracking through PET imaging and confirms their accumulation within the glioblastoma. These findings further bolster the potential use of zeolite nanocrystals as valuable theranostic tools.
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Affiliation(s)
- Charly Hélaine
- Université de Caen Normandie, CNRS, Normandie Université, ISTCT UMR6030, GIP CYCERON, F-14000 Caen, France.
| | - Abdallah Amedlous
- Université de Caen Normandie, ENSICAEN, CNRS, Normandie Université, Laboratoire Catalyse et Spectrochimie (LCS), F-14050 Caen, France.
| | - Jérôme Toutain
- Université de Caen Normandie, CNRS, Normandie Université, ISTCT UMR6030, GIP CYCERON, F-14000 Caen, France.
| | - Carole Brunaud
- Université de Caen Normandie, CNRS, Normandie Université, ISTCT UMR6030, GIP CYCERON, F-14000 Caen, France.
| | - Oleg Lebedev
- Université de Caen Normandie, ENSICAEN, CNRS, Normandie Université, Laboratoire de Cristallographie et Science des Matériaux (CRISMAT), F-14050 Caen, France
| | - Charlotte Marie
- UAR3408/US50, Université de Caen Normandie, CNRS, INSERM, CEA, GIP CYCERON, F-14000 Caen, France
| | - Cyrille Alliot
- CRCI2NA, Inserm, CNRS, Nantes Université, F-44007 Nantes Cedex 1, France
- GIP ARRONAX, F-44800 Saint-Herblain, France
| | - Myriam Bernaudin
- Université de Caen Normandie, CNRS, Normandie Université, ISTCT UMR6030, GIP CYCERON, F-14000 Caen, France.
| | - Ferid Haddad
- GIP ARRONAX, F-44800 Saint-Herblain, France
- IMT Atlantique, Nantes Université, CNRS, Subatech, F-44000 Nantes, France
| | - Svetlana Mintova
- Université de Caen Normandie, ENSICAEN, CNRS, Normandie Université, Laboratoire Catalyse et Spectrochimie (LCS), F-14050 Caen, France.
| | - Samuel Valable
- Université de Caen Normandie, CNRS, Normandie Université, ISTCT UMR6030, GIP CYCERON, F-14000 Caen, France.
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Pathak D, Sriram K. Molecular Mechanisms Underlying Neuroinflammation Elicited by Occupational Injuries and Toxicants. Int J Mol Sci 2023; 24:ijms24032272. [PMID: 36768596 PMCID: PMC9917383 DOI: 10.3390/ijms24032272] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 01/26/2023] Open
Abstract
Occupational injuries and toxicant exposures lead to the development of neuroinflammation by activating distinct mechanistic signaling cascades that ultimately culminate in the disruption of neuronal function leading to neurological and neurodegenerative disorders. The entry of toxicants into the brain causes the subsequent activation of glial cells, a response known as 'reactive gliosis'. Reactive glial cells secrete a wide variety of signaling molecules in response to neuronal perturbations and thus play a crucial role in the progression and regulation of central nervous system (CNS) injury. In parallel, the roles of protein phosphorylation and cell signaling in eliciting neuroinflammation are evolving. However, there is limited understanding of the molecular underpinnings associated with toxicant- or occupational injury-mediated neuroinflammation, gliosis, and neurological outcomes. The activation of signaling molecules has biological significance, including the promotion or inhibition of disease mechanisms. Nevertheless, the regulatory mechanisms of synergism or antagonism among intracellular signaling pathways remain elusive. This review highlights the research focusing on the direct interaction between the immune system and the toxicant- or occupational injury-induced gliosis. Specifically, the role of occupational injuries, e.g., trips, slips, and falls resulting in traumatic brain injury, and occupational toxicants, e.g., volatile organic compounds, metals, and nanoparticles/nanomaterials in the development of neuroinflammation and neurological or neurodegenerative diseases are highlighted. Further, this review recapitulates the recent advancement related to the characterization of the molecular mechanisms comprising protein phosphorylation and cell signaling, culminating in neuroinflammation.
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