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Maroun Bou Sleiman

Cette personne a quitté l’EPFL

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Publications associées (31)

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Mitochondrial and NAD plus metabolism predict recovery from acute kidney injury in a diverse mouse population

Johan Auwerx, Alexis Maximilien Bachmann, Maroun Bou Sleiman, Giacomo Vincenzo Giorgio Von Alvensleben, Dina Hofer, Yang Li, Jean-David Horacio Morel

Acute kidney failure and chronic kidney disease are global health issues steadily rising in incidence and prevalence. Animal models on a single genetic background have so far failed to recapitulate the clinical presentation of human nephropathies. Here, we ...

AMER SOC CLINICAL INVESTIGATION INC2023

Commensal Gut Bacteria Buffer the Impact of Host Genetic Variants on Drosophila Developmental Traits under Nutritional Stress

Michael Vincent Frochaux, Bart Deplancke, Maroun Bou Sleiman, Virginie Sandra Braman, Maria Litovchenko

Eukaryotic genomes encode several buffering mechanisms that robustly maintain invariant phenotypic outcome despite fluctuating environmental conditions. Here we show that the Drosophila gut-associated commensals, represented by a single facultative symbion ...

2019

Hippo-YAP/TAZ signalling coordinates adipose plasticity and energy balance by uncoupling leptin expression from fat mass

Johan Auwerx, Maroun Bou Sleiman, Jun Yong Kim, Xiaoxu Li

Adipose tissues serve as an energy reservoir and endocrine organ, yet the mechanisms that coordinate these functions remain elusive. Here, we show that the transcriptional coregulators, YAP and TAZ, uncouple fat mass from leptin levels and regulate adipocy ...

Nature Portfolio2024

Sphingolipids accumulate in aged muscle, and their reduction counteracts sarcopenia

Johan Auwerx, Maroun Bou Sleiman, Peiling Luan, Davide D'Amico, Pirkka-Pekka Untamo Laurila, Martin Rainer Wohlwend, Sébastien Robert Victor Herzig, Tanes Imamura de Lima, Qi Wang

Age-related muscle dysfunction and sarcopenia are major causes of physical incapacitation in older adults and currently lack viable treatment strategies. Here we find that sphingolipids accumulate in mouse skeletal muscle upon aging and that both genetic a ...

2022

Differentially expressed genes reflect disease-induced rather than disease-causing changes in the transcriptome

Maroun Bou Sleiman

Identification of gene expression changes between healthy and diseased individuals can reveal mechanistic insights and biomarkers. Here, the authors propose a bi-directional transcriptome-wide Mendelian Randomization approach to assess causal effects betwe ...

Nature Research2021

Integrative systems analysis identifies genetic and dietary modulators of bile acid homeostasis

Kristina Schoonjans, Johan Auwerx, Alexis Maximilien Bachmann, Maroun Bou Sleiman, Alessia Perino, Amir Banaei Esfahani, Karim Laurent Gariani, Giacomo Vincenzo Giorgio Von Alvensleben, Hao Li, Qingyao Huang, Laura Alejandra Velazquez Villegas, Yu Sun, Xiaoxu Li, Ludger Jan Elzuë Goeminne, Jéromine Imbach

Bile acids (BAs) are complex and incompletely understood enterohepatic-derived hormones that control whole-body metabolism. Here, we profiled postprandial BAs in the liver, feces, and plasma of 360 chowor high-fat-diet-fed BXD male mice and demonstrated th ...

Cell Press2022

Genetic, molecular and physiological basis of variation in Drosophila gut immunocompetence

Bruno Lemaitre, Bart Deplancke, Andreas Massouras, Dani Osman, Maroun Bou Sleiman

Gut immunocompetence involves immune, stress and regenerative processes. To investigate the determinants underlying inter-individual variation in gut immunocompetence, we perform enteric infection of 140 Drosophila lines with the entomopathogenic bacterium ...

Nature Publishing Group2015

Genetic and dietary modulators of the inflammatory response in the gastrointestinal tract of the BXD mouse genetic reference population

Jonathan Allen Sulc, Alexis Rapin, Kristina Schoonjans, Johan Auwerx, Alexis Maximilien Bachmann, Maroun Bou Sleiman, Alessia Perino, Giorgia Benegiamo, Jean-David Horacio Morel, Xiaoxu Li, Johanne Gracia Anne Poisson

Inflammatory gut disorders, including inflammatory bowel disease (IBD), can be impacted by dietary, environmental, and genetic factors. While the incidence of IBD is increasing worldwide, we still lack a complete understanding of the gene-by-environment in ...

2023

Bile Acids Signal via TGR5 to Activate Intestinal Stem Cells and Epithelial Regeneration

Kristina Schoonjans, Maroun Bou Sleiman, Alessia Perino, Ece Yildiz, Giovanni Sorrentino, Gaby El Alam

BACKGROUND & AIMS: Renewal and patterning of the intestinal epithelium is coordinated by intestinal stem cells (ISCs); dietary and metabolic factors provide signals to the niche that control ISC activity. Bile acids (BAs), metabolites in the gut, signal nu ...

2020

The Black cells phenotype is caused by a point mutation in the Drosophila pro-phenoloxidase 1 gene that triggers melanization and hematopoietic defects

Bruno Lemaitre, Olivier Binggeli, Claudine Danielle Patricia Öngen, Maroun Bou Sleiman

Melanization contributes to arthropod-specific innate immunity through deposition of melanin at wound sites or around parasites, with concomitant release of microbicidal reactive oxygen species. Melanization requires sequential activation of proteolytic en ...

Elsevier2015

The chromatin remodeling factor ISW-1 integrates organismal responses against nuclear and mitochondrial stress

Johan Auwerx, Maroun Bou Sleiman

Age-associated changes in chromatin structure have a major impact on organismal longevity. Despite being a central part of the ageing process, the organismal responses to the changes in chromatin organization remain unclear. Here we show that moderate dist ...

Nature Research2017

Randomized codon mutagenesis reveals that the HIV Rev arginine-rich motif is robust to substitutions and that double substitution of two critical residues alters specificity

Maroun Bou Sleiman

The binding of the arginine-rich motif (ARM) of HIV Rev protein to its high-affinity site in stem IIB in the Rev response element (RRE) initiates assembly of a ribonucleoprotein complex that mediates the export of essential, incompletely spliced viral tran ...

Wiley-Blackwell2013

Enteric infection induces Lark-mediated intron retention at the 5 ' end of Drosophila genes

Michael Vincent Frochaux, Bart Deplancke, Dani Osman, Maroun Bou Sleiman

Background RNA splicing is a key post-transcriptional mechanism that generates protein diversity and contributes to the fine-tuning of gene expression, which may facilitate adaptation to environmental challenges. Here, we employ a systems approach to study ...

2020

Transforming Growth Factor beta/Activin Signaling Functions as a Sugar-Sensing Feedback Loop to Regulate Digestive Enzyme Expression

Bruno Lemaitre, Wen Bin Chng, Maroun Bou Sleiman

Organisms need to assess their nutritional state and adapt their digestive capacity to the demands for various nutrients. Modulation of digestive enzyme production represents a rational step to regulate nutriment uptake. However, the role of digestion in n ...

Elsevier2014

High-content phenotypic analysis of a C. elegans recombinant inbred population identifies genetic and molecular regulators of lifespan

Elena Katsyuba, Jonathan Allen Sulc, Johan Auwerx, Laurent Mouchiroud, Maroun Bou Sleiman, Yang Li, Gaby El Alam, Wen Gao, Jean-David Horacio Morel, Xiaoxu Li, Amélia Lalou

Lifespan is influenced by complex interactions between genetic and environmental factors. Studying those factors in model organisms of a single genetic background limits their translational value for humans. Here, we mapped lifespan determinants in 85 C. e ...

2024

COX7A2L genetic variants determine cardiorespiratory fitness in mice and human

Johan Auwerx, Maroun Bou Sleiman, Pooja Jha, Pirkka-Pekka Untamo Laurila, Martin Rainer Wohlwend, Giorgia Benegiamo, Ludger Jan Elzuë Goeminne, Sandra Rodriguez Lopez

Benegiamo et al. identify genetic variants of the mitochondrial supercomplex assembly factor COX7A2L in the skeletal muscle of mice and humans that promote cardiorespiratory fitness. ...

NATURE PORTFOLIO2022

cis-regulatory variation modulates susceptibility to enteric infection in the Drosophila genetic reference panel

Michael Vincent Frochaux, Bart Deplancke, Dani Osman, Maroun Bou Sleiman, Riccardo Dainese, Virginie Sandra Braman, Vincent Roland Julien Gardeux, Maria Litovchenko, Brian Dennis Hollis

Background: Resistance to enteric pathogens is a complex trait at the crossroads of multiple biological processes. We have previously shown in the Drosophila Genetic Reference Panel (DGRP) that resistance to infection is highly heritable, but our understan ...

2020

The effects of mitochondrial- and histone stress on the C. elegans transcriptome

Johan Auwerx, Maroun Bou Sleiman, Olli Juhani Matilainen, Pedro Moral Quiros

The aim of this study was to explore whether mitochondrial- and histone stress cause any common changes in global gene expression. For this experiment, we performed RNA sequencing from control RNAi, cco-1 RNAi (mitochondrial stress) and his-3 RNAi (histone ...

EPFL Infoscience2017

Gene-by-environment modulation of lifespan and weight gain in the murine BXD family

Johan Auwerx, Evan Graehl Williams, Maroun Bou Sleiman, Pooja Jha

How lifespan and body weight vary as a function of diet and genetic differences is not well understood. Here we quantify the impact of differences in diet on lifespan in a genetically diverse family of female mice, split into matched isogenic cohorts fed a ...

NATURE PORTFOLIO2021

Identifying gene function and module connections by the integration of multispecies expression compendia

Stephan Morgenthaler, Elena Katsyuba, Kristina Schoonjans, Johan Auwerx, Fabrice David, Maroun Bou Sleiman, Daria Rukina, Hao Li, Qingyao Huang, Yang Li, Changmyung Oh, Wen Gao

The functions of many eukaryotic genes are still poorly understood. Here, we developed and validated a new method, termed GeneBridge, which is based on two linked approaches to impute gene function and bridge genes with biological processes. First, Gene-Mo ...

Cold Spring Harbor Laboratory2019