Biofilm-associated proteins: from the gut biofilms to neurodegeneration

Human microbiota form a biofilm with substantial consequences for health and disease. Numerous studies have indicated that microbial communities produce functional amyloids as part of their biofilm extracellular scaffolds. The overlooked interplay between bacterial amyloids and the host may have det...

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Main Author: Jaione Valle
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:Gut Microbes
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Online Access:https://www.tandfonline.com/doi/10.1080/19490976.2025.2461721
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author Jaione Valle
author_facet Jaione Valle
author_sort Jaione Valle
collection DOAJ
description Human microbiota form a biofilm with substantial consequences for health and disease. Numerous studies have indicated that microbial communities produce functional amyloids as part of their biofilm extracellular scaffolds. The overlooked interplay between bacterial amyloids and the host may have detrimental consequences for the host, including neurodegeneration. This work gives an overview of the biofilm-associated amyloids expressed by the gut microbiota and their potential role in neurodegeneration. It discusses the biofilm-associated proteins (BAPs) of the gut microbiota, maps the amyloidogenic domains of these proteins, and analyzes the presence of bap genes within accessory genomes linked with transposable elements. Furthermore, the evidence supporting the existence of amyloids in the gut are presented. Finally, it explores the potential interactions between BAPs and α-synuclein, extending the literature on amyloid cross-kingdom interactions. Based on these findings, this study propose that BAP amyloids act as transmissible catalysts, facilitating the misfolding, accumulation, and spread of α-synuclein aggregates. This review contributes to the understanding of complex interactions among the microbiota, transmissible elements, and host, which is crucial for developing novel therapeutic approaches to combat microbiota-related diseases and improve overall health outcomes.
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spelling doaj-art-eebe9046745c470ab18943dfaaaa1d512025-02-03T13:16:48ZengTaylor & Francis GroupGut Microbes1949-09761949-09842025-12-0117110.1080/19490976.2025.2461721Biofilm-associated proteins: from the gut biofilms to neurodegenerationJaione Valle0Microbial Biotechnology Department, Instituto de Agrobiotecnología, CSIC-Gobierno de Navarra, Mutilva, Navarra, SpainHuman microbiota form a biofilm with substantial consequences for health and disease. Numerous studies have indicated that microbial communities produce functional amyloids as part of their biofilm extracellular scaffolds. The overlooked interplay between bacterial amyloids and the host may have detrimental consequences for the host, including neurodegeneration. This work gives an overview of the biofilm-associated amyloids expressed by the gut microbiota and their potential role in neurodegeneration. It discusses the biofilm-associated proteins (BAPs) of the gut microbiota, maps the amyloidogenic domains of these proteins, and analyzes the presence of bap genes within accessory genomes linked with transposable elements. Furthermore, the evidence supporting the existence of amyloids in the gut are presented. Finally, it explores the potential interactions between BAPs and α-synuclein, extending the literature on amyloid cross-kingdom interactions. Based on these findings, this study propose that BAP amyloids act as transmissible catalysts, facilitating the misfolding, accumulation, and spread of α-synuclein aggregates. This review contributes to the understanding of complex interactions among the microbiota, transmissible elements, and host, which is crucial for developing novel therapeutic approaches to combat microbiota-related diseases and improve overall health outcomes.https://www.tandfonline.com/doi/10.1080/19490976.2025.2461721α-synucleinamyloidbiofilmbiofilm-associated proteingut microbiota
spellingShingle Jaione Valle
Biofilm-associated proteins: from the gut biofilms to neurodegeneration
Gut Microbes
α-synuclein
amyloid
biofilm
biofilm-associated protein
gut microbiota
title Biofilm-associated proteins: from the gut biofilms to neurodegeneration
title_full Biofilm-associated proteins: from the gut biofilms to neurodegeneration
title_fullStr Biofilm-associated proteins: from the gut biofilms to neurodegeneration
title_full_unstemmed Biofilm-associated proteins: from the gut biofilms to neurodegeneration
title_short Biofilm-associated proteins: from the gut biofilms to neurodegeneration
title_sort biofilm associated proteins from the gut biofilms to neurodegeneration
topic α-synuclein
amyloid
biofilm
biofilm-associated protein
gut microbiota
url https://www.tandfonline.com/doi/10.1080/19490976.2025.2461721
work_keys_str_mv AT jaionevalle biofilmassociatedproteinsfromthegutbiofilmstoneurodegeneration