Publications related to Host lifestyle affects human microbiota on daily timescales

Reconstruction and analysis of genome-scale metabolic networks in single organisms and microbial communities

Microorganisms are a key component in the chain of life. They are essential for agriculture, produce a large proportion of oxygen, and play a central role in the cycle of elements. Microorganisms are widely used in the production of food and alcoholic beve ...

EPFL2024

Microfluidic systems for infectious disease diagnostics

Thomas Lehnert, Martinus Gijs

Microorganisms, encompassing both uni- and multicellular entities, exhibit remarkable diversity as omnipresent life forms in nature. They play a pivotal role by supplying essential components for sustaining biological processes across diverse ecosystems, i ...

Royal Soc Chemistry2024

The microbial genomics of glacier-fed streams: adaptations to an extreme ecosystem

Massimo Bourquin

Glacier-fed streams are the cold, ultra-oligotrophic, and unstable streams that are fed by glacial meltwater. Despite these extreme conditions, they harbour a diverse and abundant microbial diversity that develops into biofilms, covering the boulders and s ...

EPFL2024

The conceptual foundations of innate immunity: Taking stock 30 years later

Bruno Lemaitre

While largely neglected over decades during which adaptive immunity captured most of the attention, innate immune mechanisms have now become central to our understanding of immunology. Innate immunity provides the first barrier to infection in vertebrates, ...

2024

The Effects of Spatial Organization and Fluid Flow on the Social Interactions in Microbial Communities

Jeremy Pak Hei Wong

Bacteria often engage in social interactions with neighbouring bacteria. Ecosystems which are subjected to social interactions have been widely studied in well mixed settings such as test tubes, allowing us to identify the cellular components contributing ...

EPFL2023

Overexpression of human alpha-Synuclein leads to dysregulated microbiome/metabolites with ageing in a rat model of Parkinson disease

Yogesh Singh Chauhan, Hilal Lashuel, Florian Lang, Joan Romani Aumedes, Yogesh Singh

Background Braak's hypothesis states that sporadic Parkinson's disease (PD) follows a specific progression of pathology from the peripheral to the central nervous system, and this progression can be monitored by detecting the accumulation of alpha-Synuclei ...

BMC2023

Multidisciplinary Investigation of the Gut-Brain Ecosystem in a Model of Alzheimer's Disease

Arielle Louise Planchette

The search for an understanding of the causal elements that lead to neurodegenerative diseases has motivated researchers for decades. Today, Alzheimer's disease is the most prevalent form of dementia and affects approximately fifty million people worldwide ...

EPFL2022

Compartmentalized PGRP expression along the dipteran Bactrocera dorsalis gut forms a zone of protection for symbiotic bacteria

Ping Zhang, Bruno Lemaitre, Yichen Wang

All metazoan guts are subject to opposing pressures wherein the immune system must eliminate pathogens while tolerating the presence of symbiotic microbiota. The Imd pathway is an essential defense against invading pathogens in insect guts, but tolerance m ...

Cell Press2022

Meta-omics-aided isolation of an elusive anaerobic arsenic-methylating soil bacterium

Rizlan Bernier-Latmani, Karen Elda Viacava Romo, Karin Lederballe Meibom, Matthew Charles Reid, Nicolas Louis Maurice Jacquemin, Jiangtao Qiao

Soil microbiomes harbor unparalleled functional and phylogenetic diversity and are sources of novel metabolisms. However, extracting isolates with a targeted function from complex microbiomes is not straightforward, particularly if the associated phenotype ...

2022

Glacier shrinkage will accelerate downstream decomposition of organic matter and alters microbiome structure and function

Nicola Deluigi, Leïla Ezzat, Vincent Henri De Staercke, Tom Ian Battin, Paraskevi Pramateftaki, Hannes Markus Peter, Jade Brandani, Matteo Tolosano, Michail Styllas, Tyler Joe Kohler, Stylianos Fodelianakis, Massimo Bourquin, Martina Andrea Schön, Susheel Bhanu Busi, Grégoire Marie Octave Edouard Michoud

The shrinking of glaciers is among the most iconic consequences of climate change. Despite this, the downstream consequences for ecosystem processes and related microbiome structure and function remain poorly understood. Here, using a space-for-time substi ...

Wiley2022

Obesity-associated deficits in inhibitory control are phenocopied to mice through gut microbiota changes in one-carbon and aromatic amino acids metabolic pathways

Xavier Fernandez-Real Girona

Background Inhibitory control (IC) is critical to keep long-term goals in everyday life. Bidirectional relationships between IC deficits and obesity are behind unhealthy eating and physical exercise habits. ...

BMJ PUBLISHING GROUP2021

Autophagy as a Gatekeeper of Intestinal Homeostasis

Bruno Lemaitre, Xiaoxue Li

The control of gut homeostasis by autophagy in the context of host-microbiota relationship remains poorly understood. In this issue of Developmental Cell, Nagai et al. (2021) show that autophagy plays a crucial role in enterocytes to prevent the mis-regula ...

Cell Press - Elsevier2021

Unravelling the collateral damage of antibiotics on gut bacteria

Camille Véronique Bernadette Goemans

Antibiotics are used to fight pathogens but also target commensal bacteria, disturbing the composition of gut microbiota and causing dysbiosis and disease1. Despite this well-known collateral damage, the activity spectrum of different antibiotic classes on ...

2021

IL-17 controls central nervous system autoimmunity through the intestinal microbiome

Sandrine Natacha Isaac

Interleukin-17A- (IL-17A) and IL-17F-producing CD4(+) T helper cells (T(H)17 cells) are implicated in the development of chronic inflammatory diseases, such as multiple sclerosis and its animal model, experimental autoimmune encephalomyelitis (EAE). T-H 17 ...

2021

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

Thomas Lehnert, Martinus Gijs, Vittorio Viri, Maël Arveiler

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

Molecular physiology of bile acid signaling in health, disease, and aging

Kristina Schoonjans, Alessia Perino, Hadrien Charles Edouard Demagny, Laura Alejandra Velazquez Villegas

Over the last two decades, bile acids (BAs) have become established as important signaling molecules that enable fine-tuned inter-tissue communication from the liver, their site of production, over the intestine, where they are modified by the gut microbio ...

2021

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

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

Probiotics and gut microbiome-Prospects and challenges in remediating heavy metal toxicity

Edgard Gnansounou, Ranjna Sirohi

The gut microbiome, often referred to as "super organ", comprises up to a hundred trillion microorganisms, and the species diversity may vary from person to person. They perform a decisive role in diverse biological functions related to metabolism, immunit ...

ELSEVIER2021

Energy efficiency and biological interactions define the core microbiome of deep oligotrophic groundwater

Rizlan Bernier-Latmani, Emma Bell

While oligotrophic deep groundwaters host active microbes attuned to the low-end of the bioenergetics spectrum, the ecological constraints on microbial niches in these ecosystems and their consequences for microbiome convergence are unknown. Here, we provi ...

Nature Research2021

Dietary Fiber Is Essential to Maintain Intestinal Size, L-Cell Secretion, and Intestinal Integrity in Mice

Kristina Schoonjans

Dietary fiber has been linked to improved gut health, yet the mechanisms behind this association remain poorly understood. One proposed mechanism is through its influence on the secretion of gut hormones, including glucagon-like peptide-1 (GLP-1) and gluca ...

FRONTIERS MEDIA SA2021