Bacterial extracellular vesicles – brain invaders? A systematic review

IntroductionKnowledge on the human gut microbiota in health and disease continues to rapidly expand. In recent years, changes in the gut microbiota composition have been reported as a part of the pathology in numerous neurodegenerative diseases. Bacterial extracellular vesicles (EVs) have been sugge...

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Main Authors: Anna Kaisanlahti, Sonja Salmi, Sohvi Kumpula, Sajeen Bahadur Amatya, Jenni Turunen, Mysore Tejesvi, Nadiya Byts, Terhi Tapiainen, Justus Reunanen
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-09-01
Series:Frontiers in Molecular Neuroscience
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fnmol.2023.1227655/full
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author Anna Kaisanlahti
Anna Kaisanlahti
Sonja Salmi
Sohvi Kumpula
Sohvi Kumpula
Sajeen Bahadur Amatya
Sajeen Bahadur Amatya
Jenni Turunen
Jenni Turunen
Mysore Tejesvi
Mysore Tejesvi
Nadiya Byts
Nadiya Byts
Terhi Tapiainen
Terhi Tapiainen
Terhi Tapiainen
Justus Reunanen
Justus Reunanen
author_facet Anna Kaisanlahti
Anna Kaisanlahti
Sonja Salmi
Sohvi Kumpula
Sohvi Kumpula
Sajeen Bahadur Amatya
Sajeen Bahadur Amatya
Jenni Turunen
Jenni Turunen
Mysore Tejesvi
Mysore Tejesvi
Nadiya Byts
Nadiya Byts
Terhi Tapiainen
Terhi Tapiainen
Terhi Tapiainen
Justus Reunanen
Justus Reunanen
author_sort Anna Kaisanlahti
collection DOAJ
description IntroductionKnowledge on the human gut microbiota in health and disease continues to rapidly expand. In recent years, changes in the gut microbiota composition have been reported as a part of the pathology in numerous neurodegenerative diseases. Bacterial extracellular vesicles (EVs) have been suggested as a novel mechanism for the crosstalk between the brain and gut microbiota, physiologically connecting the observed changes in the brain to gut microbiota dysbiosis.MethodsPublications reporting findings on bacterial EVs passage through the blood–brain barrier were identified in PubMed and Scopus databases.ResultsThe literature search yielded 138 non-duplicate publications, from which 113 records were excluded in title and abstract screening step. From 25 publications subjected to full-text screening, 8 were excluded. The resulting 17 publications were considered for the review.DiscussionBacterial EVs have been described with capability to cross the blood–brain barrier, but the mechanisms behind the crossing remain largely unknown. Importantly, very little data exists in this context on EVs secreted by the human gut microbiota. This systematic review summarizes the present evidence of bacterial EVs crossing the blood–brain barrier and highlights the importance of future research on gut microbiota-derived EVs in the context of gut-brain communication across the blood–brain barrier.
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spelling doaj.art-aebbeb7ec87e4027b8e27dccd933ce8e2023-09-14T14:28:25ZengFrontiers Media S.A.Frontiers in Molecular Neuroscience1662-50992023-09-011610.3389/fnmol.2023.12276551227655Bacterial extracellular vesicles – brain invaders? A systematic reviewAnna Kaisanlahti0Anna Kaisanlahti1Sonja Salmi2Sohvi Kumpula3Sohvi Kumpula4Sajeen Bahadur Amatya5Sajeen Bahadur Amatya6Jenni Turunen7Jenni Turunen8Mysore Tejesvi9Mysore Tejesvi10Nadiya Byts11Nadiya Byts12Terhi Tapiainen13Terhi Tapiainen14Terhi Tapiainen15Justus Reunanen16Justus Reunanen17Biocenter Oulu, University of Oulu, Oulu, FinlandResearch Unit of Translational Medicine, University of Oulu, Oulu, FinlandDisease Networks Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, FinlandBiocenter Oulu, University of Oulu, Oulu, FinlandResearch Unit of Translational Medicine, University of Oulu, Oulu, FinlandBiocenter Oulu, University of Oulu, Oulu, FinlandResearch Unit of Translational Medicine, University of Oulu, Oulu, FinlandBiocenter Oulu, University of Oulu, Oulu, FinlandResearch Unit of Clinical Medicine, University of Oulu, Oulu, FinlandBiocenter Oulu, University of Oulu, Oulu, FinlandDepartment of Ecology and Genetics, Faculty of Science, University of Oulu, Oulu, FinlandBiocenter Oulu, University of Oulu, Oulu, FinlandResearch Unit of Translational Medicine, University of Oulu, Oulu, FinlandBiocenter Oulu, University of Oulu, Oulu, FinlandResearch Unit of Clinical Medicine, University of Oulu, Oulu, FinlandDepartment of Pediatrics and Adolescent Medicine, Oulu University Hospital, Oulu, FinlandBiocenter Oulu, University of Oulu, Oulu, FinlandResearch Unit of Translational Medicine, University of Oulu, Oulu, FinlandIntroductionKnowledge on the human gut microbiota in health and disease continues to rapidly expand. In recent years, changes in the gut microbiota composition have been reported as a part of the pathology in numerous neurodegenerative diseases. Bacterial extracellular vesicles (EVs) have been suggested as a novel mechanism for the crosstalk between the brain and gut microbiota, physiologically connecting the observed changes in the brain to gut microbiota dysbiosis.MethodsPublications reporting findings on bacterial EVs passage through the blood–brain barrier were identified in PubMed and Scopus databases.ResultsThe literature search yielded 138 non-duplicate publications, from which 113 records were excluded in title and abstract screening step. From 25 publications subjected to full-text screening, 8 were excluded. The resulting 17 publications were considered for the review.DiscussionBacterial EVs have been described with capability to cross the blood–brain barrier, but the mechanisms behind the crossing remain largely unknown. Importantly, very little data exists in this context on EVs secreted by the human gut microbiota. This systematic review summarizes the present evidence of bacterial EVs crossing the blood–brain barrier and highlights the importance of future research on gut microbiota-derived EVs in the context of gut-brain communication across the blood–brain barrier.https://www.frontiersin.org/articles/10.3389/fnmol.2023.1227655/fullmicrobiotabacteriaextracellular vesiclesbrainblood–brain barrier
spellingShingle Anna Kaisanlahti
Anna Kaisanlahti
Sonja Salmi
Sohvi Kumpula
Sohvi Kumpula
Sajeen Bahadur Amatya
Sajeen Bahadur Amatya
Jenni Turunen
Jenni Turunen
Mysore Tejesvi
Mysore Tejesvi
Nadiya Byts
Nadiya Byts
Terhi Tapiainen
Terhi Tapiainen
Terhi Tapiainen
Justus Reunanen
Justus Reunanen
Bacterial extracellular vesicles – brain invaders? A systematic review
Frontiers in Molecular Neuroscience
microbiota
bacteria
extracellular vesicles
brain
blood–brain barrier
title Bacterial extracellular vesicles – brain invaders? A systematic review
title_full Bacterial extracellular vesicles – brain invaders? A systematic review
title_fullStr Bacterial extracellular vesicles – brain invaders? A systematic review
title_full_unstemmed Bacterial extracellular vesicles – brain invaders? A systematic review
title_short Bacterial extracellular vesicles – brain invaders? A systematic review
title_sort bacterial extracellular vesicles brain invaders a systematic review
topic microbiota
bacteria
extracellular vesicles
brain
blood–brain barrier
url https://www.frontiersin.org/articles/10.3389/fnmol.2023.1227655/full
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