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Schaack B, Mercier C, Katby M, Hannani D, Vollaire J, Robert JS, Caffaratti C, Blanquet F, Nicoud O, Josserand V, Laurin D. Rapid Biodistribution of Fluorescent Outer-Membrane Vesicles from the Intestine to Distant Organs via the Blood in Mice. Int J Mol Sci 2024; 25:1821. [PMID: 38339099 PMCID: PMC10855177 DOI: 10.3390/ijms25031821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/16/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
A cell's ability to secrete extracellular vesicles (EVs) for communication is present in all three domains of life. Notably, Gram-negative bacteria produce a specific type of EVs called outer membrane vesicles (OMVs). We previously observed the presence of OMVs in human blood, which could represent a means of communication from the microbiota to the host. Here, in order to investigate the possible translocation of OMVs from the intestine to other organs, the mouse was used as an animal model after OMVs administration. To achieve this, we first optimized the signal of OMVs containing the fluorescent protein miRFP713 associated with the outer membrane anchoring peptide OmpA by adding biliverdin, a fluorescence cofactor, to the cultures. The miRFP713-expressing OMVs produced in E. coli REL606 strain were then characterized according to their diameter and protein composition. Native- and miRFP713-expressing OMVs were found to produce homogenous populations of vesicles. Finally, in vivo and ex vivo fluorescence imaging was used to monitor the distribution of miRFP713-OMVs in mice in various organs whether by intravenous injection or oral gavage. The relative stability of the fluorescence signals up to 3 days post-injection/gavage paves the way to future studies investigating the OMV-based communication established between the different microbiotas and their host.
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Affiliation(s)
- Béatrice Schaack
- CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, University Grenoble Alpes, F-38000 Grenoble, France; (B.S.); (C.M.); (M.K.); (D.H.); (C.C.); (F.B.)
- CEA, CNRS, IBS, University Grenoble Alpes, F-38000 Grenoble, France
| | - Corinne Mercier
- CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, University Grenoble Alpes, F-38000 Grenoble, France; (B.S.); (C.M.); (M.K.); (D.H.); (C.C.); (F.B.)
| | - Maya Katby
- CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, University Grenoble Alpes, F-38000 Grenoble, France; (B.S.); (C.M.); (M.K.); (D.H.); (C.C.); (F.B.)
| | - Dalil Hannani
- CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, University Grenoble Alpes, F-38000 Grenoble, France; (B.S.); (C.M.); (M.K.); (D.H.); (C.C.); (F.B.)
| | - Julien Vollaire
- INSERM U1209, CNRS UMR5309, Institute for Advanced Biosciences, University Grenoble Alpes, F-38000 Grenoble, France; (J.V.); (O.N.); (V.J.)
| | - Julie Suzanne Robert
- Etablissement Français du Sang, Département Scientifique Auvergne Rhône-Alpes, F-38000 Grenoble, France;
| | - Clément Caffaratti
- CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, University Grenoble Alpes, F-38000 Grenoble, France; (B.S.); (C.M.); (M.K.); (D.H.); (C.C.); (F.B.)
| | - Françoise Blanquet
- CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, University Grenoble Alpes, F-38000 Grenoble, France; (B.S.); (C.M.); (M.K.); (D.H.); (C.C.); (F.B.)
| | - Olivier Nicoud
- INSERM U1209, CNRS UMR5309, Institute for Advanced Biosciences, University Grenoble Alpes, F-38000 Grenoble, France; (J.V.); (O.N.); (V.J.)
| | - Véronique Josserand
- INSERM U1209, CNRS UMR5309, Institute for Advanced Biosciences, University Grenoble Alpes, F-38000 Grenoble, France; (J.V.); (O.N.); (V.J.)
| | - David Laurin
- INSERM U1209, CNRS UMR5309, Institute for Advanced Biosciences, University Grenoble Alpes, F-38000 Grenoble, France; (J.V.); (O.N.); (V.J.)
- Etablissement Français du Sang, Département Scientifique Auvergne Rhône-Alpes, F-38000 Grenoble, France;
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