1
|
Szittner Z, Péter B, Kurunczi S, Székács I, Horváth R. Functional blood cell analysis by label-free biosensors and single-cell technologies. Adv Colloid Interface Sci 2022; 308:102727. [DOI: 10.1016/j.cis.2022.102727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/25/2022] [Accepted: 06/27/2022] [Indexed: 11/01/2022]
|
2
|
Boucher M, Blais Lecours P, Létourneau V, Veillette M, Duchaine C, Marsolais D. Organic components of airborne dust influence the magnitude and kinetics of dendritic cell activation. Toxicol In Vitro 2018; 50:391-398. [PMID: 29709566 DOI: 10.1016/j.tiv.2018.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/23/2018] [Accepted: 04/23/2018] [Indexed: 01/25/2023]
Abstract
Bioaerosol exposure in highly contaminated occupational settings is associated with an increased risk of disease. Yet, few determinants allow for accurate prediction of the immunopathogenic potential of complex bioaerosols. Since dendritic cells are instrumental to the initiation of immunopathological reactions, we studied how dendritic cell activation was modified in response to individual agents, combined microbial agents, or air sample eluates from highly contaminated environmental settings. We found that combinations of agents accelerated and enhanced the activation of in vitro-generated murine bone marrow-derived dendritic cell cultures, when compared to individual agents. We also determined that endotoxins are not sufficient to predict the potential of air samples to induce bone marrow-derived dendritic cell activation, especially when endotoxin levels are low. Importantly, bone marrow-derived dendritic cell activation stratified samples from three environmental settings (swine barns, dairy barns, and wastewater treatment plants) according to their air quality status. As a whole, these results support the notion that the interplay between bioaerosol components impacts on their ability to activate dendritic cells and that bone marrow-derived dendritic cell cultures are promising tools to study the immunomodulatory impact of air samples and their components.
Collapse
Affiliation(s)
- Magali Boucher
- Centre de recherche, l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, 2725 chemin Sainte-Foy, Québec, QC, Canada
| | - Pascale Blais Lecours
- Centre de recherche, l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, 2725 chemin Sainte-Foy, Québec, QC, Canada
| | - Valérie Létourneau
- Centre de recherche, l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, 2725 chemin Sainte-Foy, Québec, QC, Canada
| | - Marc Veillette
- Centre de recherche, l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, 2725 chemin Sainte-Foy, Québec, QC, Canada
| | - Caroline Duchaine
- Centre de recherche, l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, 2725 chemin Sainte-Foy, Québec, QC, Canada; Département de biochimie, de microbiologie et de bio-informatique, Faculté des sciences et de génie, Université Laval, Québec, QC, Canada
| | - David Marsolais
- Centre de recherche, l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, 2725 chemin Sainte-Foy, Québec, QC, Canada; Département de médecine, Faculté de médecine, Université Laval, Québec, QC, Canada.
| |
Collapse
|
3
|
Qu M, Boruah BM, Zhang W, Li Y, Liu W, Bi Y, Gao GF, Yang R, Liu D, Gao B. A Rat Basophilic Leukaemia cell sensor for the detection of pathogenic viruses. Biosens Bioelectron 2012; 43:412-8. [PMID: 23356997 DOI: 10.1016/j.bios.2012.11.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 11/08/2012] [Accepted: 11/10/2012] [Indexed: 12/13/2022]
Abstract
A Rat Basophilic Leukemia (RBL) cell sensor is developed for the detection and identification of pathogenic viruses. Recombinant sdAb-Fc antibodies were constructed by linking virus-specific single domain antibody to mouse IgE-Fc fragment. The sdAb-Fc can bind to FcεRI receptors on RBL cells and can be cross-linked by target viruses leading to cell activation and Ca(2+) influx reflected by the increase of intracellular fluorescence. The responses of RBL cells to viruses in real time could be observed using fluorescence microscopy. 10(3) TCID50 of H5N1 viruses and 10 LD50 of rabies viruses could be detected in less than three minutes. An excess quantity of non-relevant viruses did not interfere with the recognition of target viruses.
Collapse
Affiliation(s)
- Mingsheng Qu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|