Publications related to Ulcerative colitis

High-affinity peptides developed against calprotectin and their application as synthetic ligands in diagnostic assays

Christian Heinis, Florence Pojer, Kelvin Ka Ching Lau, Cristina Diaz Perlas, Lluc Farrera Soler

A peptide was developed that binds to calprotectin, a marker of major inflammatory disorders, and found to be suited for diagnostic tests. The use of synthetic peptides in assays is of great interest due to their high precision, robustness and low price. ...

Nature Portfolio2023

SARS-CoV-2 hijacks a cell damage response, which induces transcription of a more efficient Spike S-acyltransferase

Didier Trono, Françoise Gisou van der Goot Grunberg, Laurence Gouzi Abrami, Béatrice Kunz, Francisco De Magalhães Sarmento R De Mesquita, Lucie Josepha Marie Bracq, Joana Carlevaro Fita, Audrey Geneviève Chuat, Nattawadee Panyain

SARS-CoV-2 infection requires Spike protein-mediated fusion between the viral and cellular membranes. The fusogenic activity of Spike depends on its post-translational lipid modification by host S-acyltransferases, predominantly ZDHHC20. Previous observati ...

Nature Research2023

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

Hilal Lashuel, Yogesh Singh Chauhan, 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

Acetate, a metabolic product of Heligmosomoides polygyrus, facilitates intestinal epithelial barrier breakdown in a FFAR2-dependent manner

Nicola Harris, Mario Michael Zaiss, Julia Esser-von Bieren, Lalit Kumar Dubey, Luc Xavier Marie Lebon

Approximately 2 billion people worldwide and a significant part of the domestic livestock are infected with soil-transmitted helminths, of which many establish chronic infections causing substantial eco-nomic and welfare burdens. Beside intensive research ...

2022

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

NCoR1 Protects Mice From Dextran Sodium Sulfate Induced Colitis by Guarding Colonic Crypt Cells From Luminal Insult

Johan Auwerx

BACKGROUND & AIMS: Colonic stem cells are essential for producing the mucosal lining, which in turn protects stem cells from insult by luminal factors. Discovery of genetic and biochemical events that control stem cell proliferation and differentiation can ...

2020

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

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

De novo development of proteolytically resistant therapeutic peptides for oral administration

Christian Heinis, Luciano Andres Abriata, Florence Pojer, Xudong Kong, Vanessa Carle, Kaycie Marie Butler, Jun Moriya

The oral administration of peptide drugs is hampered by their metabolic instability and limited intestinal uptake. Here, we describe a method for the generation of small target-specific peptides (less than 1,600 Da in size) that resist gastrointestinal pro ...

2020

Diet modulates cecum bacterial diversity and physiological phenotypes across the BXD mouse genetic reference population

Johan Auwerx, Evan Graehl Williams

The BXD family has become one of the preeminent genetic reference populations to understand the genetic and environmental control of phenotypic variation. Here we evaluate the responses to different levels of fat in the diet using both chow diet (CD, 13-18 ...

2019

Absence of specific alternatively spliced exon of CD44 in macrophages prevents colitis

Ulrich Hoffmann, Riccardo Sabatini

CD44 is a transmembrane molecule appearing in numerous isoforms generated by insertions of alternatively spliced variant exons (CD44v) and having various binding partners. CD44v7 on T cells was proposed to promote colitis by preventing T-cell apoptosis. He ...

NATURE PUBLISHING GROUP2018

Intestinal helminths modulate the gut microbiome

Alexis Rapin

Intestinal parasitic worms (commonly named intestinal helminths) affect close to one quarter of the world population and cause major losses for the livestock industry. These parasites establish chronic infections by modulation the immunity of their host. T ...

EPFL2018

Bile acids deoxycholic acid and ursodeoxycholic acid differentially regulate human beta-defensin-1 and-2 secretion by colonic epithelial cells

Kristina Schoonjans, Alessia Perino

Bile acids and epithelial-derived human beta-defensins (H beta Ds) are known to be important factors in the regulation of colonic mucosal barrier function and inflammation. We hypothesized that bile acids regulate colonic H beta D expression and aimed to t ...

Federation of American Society of Experimental Biology2017

Intestinal steroidogenesis controls PPAR expression in the colon and is impaired during ulcerative colitis

Johan Auwerx

Background and aims Immune tolerance breakdown during UC involves the peroxisome proliferator-activated receptor- (PPAR), a key factor in mucosal homoeostasis and the therapeutic target of 5-aminosalycilates, which expression is impaired during UC. Here we ...

Bmj Publishing Group2015

Antibody-Mediated Trapping of Helminth Larvae Requires CD11b and Fc gamma Receptor I

Arne Seitz, Romain Guiet, Duncan-Bruce Sutherland, Nicola Harris, Benjamin John Marsland, Beatrice Volpe, Julia Esser-von Bieren, Manuel Kulagin

Infections with intestinal helminths severely impact on human and veterinary health, particularly through the damage that these large parasites inflict when migrating through host tissues. Host immunity often targets the motility of tissue-migrating helmin ...

American Association of Immunologists ; Oxford University Press2015

Loss of Sirt1 function improves intestinal anti-bacterial defense and protects from colitis-induced colorectal cancer

Johan Auwerx, Kristina Schoonjans, Laurent Mouchiroud, Dongryeol Ryu, Elena Katsyuba, Alessandra Piersigilli, Giuseppe Lo Sasso

Dysfunction of Paneth and goblet cells in the intestine contributes to inflammatory bowel disease (IBD) and colitis-associated colorectal cancer (CAC). Here, we report a role for the NAD+-dependent histone deacetylase SIRT1 in the control of anti-bacterial ...

Public Library of Science2014

SIRT2 Deficiency Modulates Macrophage Polarization and Susceptibility to Experimental Colitis

Johan Auwerx, Kristina Schoonjans, Alessia Perino, Adrienne Joëlle Laurence Mottis, Alessandra Piersigilli, Keir Joe Menzies, Hiroyasu Yamamoto, Giuseppe Lo Sasso

Background: SIRT2 belongs to a highly conserved family of NAD(+)-dependent deacylases, consisting of seven members (SIRT1-SIRT7), which vary in subcellular localizations and have substrates ranging from histones to transcription factors and enzymes. Recent ...

Public Library of Science2014

Intestinal bacteria induce TSLP to promote mutualistic T-cell responses

Nicola Harris, Mario Michael Zaiss, Ilaria Mosconi

Thymic stromal lymphopoietin (TSLP) is constitutively expressed in the intestine and is known to regulate inflammation in models of colitis. We show that steady-state TSLP expression requires intestinal bacteria and has an important role in limiting the ex ...

Nature Publishing Group2013

Investigating the acoustic release of doxorubicin from targeted micelles

Jeffrey Alan Hubbell

The main problem associated with the administration of anti-cancer medication is that the drug is delivered throughout the body causing undesirable side effects. Therefore, it is important to synthesize drug carriers capable of minimizing the adverse side ...

Elsevier2013

Low dose endoluminal photodynamic therapy improves murine T cell-mediated colitis

Hubert van den Bergh, Georges Wagnières, Tanja Gabrecht, François André Borle, Dominique Velin

Background and study aims: Low dose photodynamic therapy (LDPDT) may modify the mucosal immune response and may thus provide a therapy for Crohn's disease. We evaluated the efficacy and safety of this technique in a murine T cell-mediated colitis model. ...

2011

Compositions and use of sulfasalazine

Kai Johnsson, Christopher Chidley

The invention relates to compositions comprising sulfasalazine or sulfapyridine and products of a biosynthetic pathway that requires tetrahydrobiopterin. Such compositions are useful for the treatment of inflammatory bowel diseases or rheumatoid arthritis, ...

2011