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Publications associées (30)

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Identification of Allobaculum mucolyticum as a novel human intestinal mucin degrader

Guido Van Mierlo

The human gut microbiota plays a central role in intestinal health and disease. Yet, many of its bacterial constituents are functionally still largely unexplored. A crucial prerequisite for bacterial survival and proliferation is the creation and/or exploi ...

2021

Structural Basis of Ligand Selectivity by a Bacterial Adhesin Lectin Involved in Multispecies Biofilm Formation

Corey Alfred Stevens

Carbohydrate recognition by lectins governs critical host-microbe interactions. MpPA14 (Marinomonas primoryensis PA14 domain) lectin is a domain of a 1.5-MDa adhesin responsible for a symbiotic bacterium-diatom interaction in Antarctica. Here, we show that ...

Amer Soc Microbiology2021

An In Vivo Microfluidic Study of Bacterial Load Dynamics and Absorption in the C. elegans Intestine

Martinus Adela Maria Gijs, Thomas Lehnert, Vittorio Viri

Caenorhabditiselegans (C. elegans) has gained importance as a model for studying host-microbiota interactions and bacterial infections related to human pathogens. Assessing the fate of ingested bacteria in the worm's intestine is therefore of great interes ...

MDPI2021

Dynamic persistence of UPEC intracellular bacterial communities in a human bladder-chip model of urinary tract infection

Graham Knott, John McKinney, Neeraj Dhar, Vivek Vijay Thacker, François Signorino-Gelo, Kunal Sharma, Thomas Marie Simonet

Uropathogenic Escherichia coli (UPEC) proliferate within superficial bladder umbrella cells to form intracellular bacterial communities (IBCs) during early stages of urinary tract infections. However, the dynamic responses of IBCs to host stresses and anti ...

2021

Microtissue models for studying the dynamics of host-pathogen interactions in the urinary bladder

Kunal Sharma

Urinary tract infections (UTIs) are amongst the most common bacterial infections and are the second-most frequent reason for antibiotic prescriptions. Moreover, in about 25% of all treated cases, recurrence of infection occurs. Uropathogenic Escherichia co ...

EPFL2021

Human commensal gut Proteobacteria withstand type VI secretion attacks through immunity protein-independent mechanisms

Melanie Blokesch, Sandrine Stutzmann, Candice Stoudmann, Leonardo Filipe Lemos Rocha, Nina Vesel, Nicolas Olmo Flaugnatti, Sandrine Natacha Isaac, Thibault Géry L Sana

While the major virulence factors for Vibrio cholerae, the cause of the devastating diarrheal disease cholera, have been extensively studied, the initial intestinal colonization of the bacterium is not well understood because non-human adult animals are re ...

Nature Research2021

Microfluidic culture platforms for C. elegans bacterial interaction and digestion studies at single-organism resolution

Vittorio Viri

Increasing interest in understanding fundamental biological processes, among which aging and nutrition, has led to the study of simple and powerful model organisms, as the round-worm Caenorhabditis elegans (C. elegans). The nematode, selected by Sydney Bre ...

EPFL2021

Intestinal organoid cocultures with microbes

Devanjali Dutta

This protocol comprises various methods to coculture organoids (particularly human small intestinal and colon organoids) with microbes, including microinjection into the lumen and periphery of 3D organoids and exposure of organoids to microbes in a 2D laye ...

NATURE PORTFOLIO2021

The Mammalian Membrane Microenvironment Regulates the Sequential Attachment of Bacteria to Host Cells

Alexandre Louis André Persat, Xavier Jean-Yves Pierrat, Zaïnebe Dhirani, Jeremy Pak Hei Wong

Pathogen attachment to host tissue is critical in the progress of many infections. Bacteria use adhesion in vivo to stabilize colonization and subsequently regulate the deployment of contact-dependent virulence traits. To specifically target host cells, th ...

2021

Identification of a Dps contamination in Mitomycin-C–induced expression of Colicin Ia

Henning Paul-Julius Stahlberg

Colicins are bacterial toxins targeting Gram-negative bacteria, including E. coli and related Enterobacteriaceae strains. Some colicins form ion-gated pores in the inner membrane of attacked bacteria that are lethal to their target. Colicin Ia was the firs ...

2021