Development of an In Vitro Model of the Gut Microbiota Enriched in Mucus-Adhering Bacteria.

Autor:	Calvigioni M; Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy., Panattoni A; Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy., Biagini F; Department of Information Engineering, University of Pisa, Pisa, Italy.; Research Center 'Enrico Piaggio', University of Pisa, Pisa, Italy., Donati L; Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy., Mazzantini D; Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy., Massimino M; Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy., Daddi C; Department of Information Engineering, University of Pisa, Pisa, Italy.; Research Center 'Enrico Piaggio', University of Pisa, Pisa, Italy., Celandroni F; Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy., Vozzi G; Department of Information Engineering, University of Pisa, Pisa, Italy.; Research Center 'Enrico Piaggio', University of Pisa, Pisa, Italy., Ghelardi E; Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.; Research Center 'Nutraceuticals and Food for Health - Nutrafood', University of Pisa, Pisa, Italy.
Jazyk:	angličtina
Zdroj:	Microbiology spectrum [Microbiol Spectr] 2023 Aug 17; Vol. 11 (4), pp. e0033623. Date of Electronic Publication: 2023 Jun 08.
DOI:	10.1128/spectrum.00336-23
Abstrakt:	Culturing the gut microbiota in in vitro models that mimic the intestinal environment is increasingly becoming a promising alternative approach to study microbial dynamics and the effect of perturbations on the gut community. Since the mucus-associated microbial populations in the human intestine differ in composition and functions from their luminal counterpart, we attempted to reproduce in vitro the microbial consortia adhering to mucus using an already established three-dimensional model of the human gut microbiota. Electrospun gelatin structures supplemented or not with mucins were inoculated with fecal samples and compared for their ability to support microbial adhesion and growth over time, as well as to shape the composition of the colonizing communities. Both scaffolds allowed the establishment of long-term stable biofilms with comparable total bacterial loads and biodiversity. However, mucin-coated structures harbored microbial consortia especially enriched in Akkermansia , Lactobacillus , and Faecalibacterium , being therefore able to select for microorganisms commonly considered mucosa-associated in vivo . IMPORTANCE These findings highlight the importance of mucins in shaping intestinal microbial communities, even those in artificial gut microbiota systems. We propose our in vitro model based on mucin-coated electrospun gelatin structures as a valid device for studies evaluating the effects of exogenous factors (nutrients, probiotics, infectious agents, and drugs) on mucus-adhering microbial communities. Competing Interests: The authors declare no conflict of interest.
Databáze:	MEDLINE
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