Publications associées à Effect of microcapsule composition and short-term immunosuppression on intraportal biocompatibility

Single-cell analysis of the interactions between Mycobacterium tuberculosis and macrophages

Mycobacterium Tuberculosis is a highly effective pathogen infecting nearly a third of the world's population. An M. tuberculosis infection starts when droplets containing bacteria enter an individual's lungs. The first host cells to contact the bacteria ar ...

EPFL2024

Defining and targeting tumor-associated macrophages in malignant mesothelioma

Michele De Palma

Defining the ontogeny of tumor-associated macrophages (TAM) is important to develop therapeutic targets for mesothelioma. We identified two distinct macrophage populations in mouse peritoneal and pleural cavities, the monocyte-derived, small peritoneal/ple ...

National Academy of Sciences2023

Machine learning predictions of MHC-II specificities reveal alternative binding mode of class II epitopes

Julien Racle, David Gfeller, Philippe Guillaume Coune, Florence Pojer, Marta Andreia Da Silva Perez, George Coukos, Kelvin Ka Ching Lau, Amédé Noredine Larabi, Alexandre Harari

CD4+T cells orchestrate the adaptive immune response against pathogens and cancer by recognizing epitopes presented on class II major histocompatibility complex (MHC-II) molecules. The high polymorphism of MHC-II genes represents an important hurdle toward ...

CELL PRESS2023

Study of backward Brillouin scattering in gas-filled anti-resonant fibers

Luc Thévenaz, Li Zhang, Malak Mohamed Hossameldeen Omar Mohamed Galal

Brillouin scattering in gas shows unmatched gain properties in hollow-core optical fibers filled at high pressure. Here, the gain characteristics are studied for two common gases, namely, N2 and CO2, which show distinct features and are compared to expecte ...

2023

Monocyte-derived macrophages aggravate pulmonary vasculitis via cGAS/STING/IFN-mediated nucleic acid sensing

Andrea Ablasser

Kessler et al. identify aberrant DNA recognition by cGAS/STING and IFN-I production by inflammatory macrophages as a driver of severe ANCA-associated vasculitis. Pharmacological interventions blocking this pathway ameliorate disease and accelerate recovery ...

ROCKEFELLER UNIV PRESS2022

Variability of Primary Sjogren's Syndrome Is Driven by Interferon alpha and Interferon alpha Blood Levels Are Associated With the Class II HLA-DQ Locus

Nicolas Meyer, Jacques Fellay, Christian Axel Wandall Thorball

Objective Primary Sjogren's syndrome (SS) is the second most frequent systemic autoimmune disease, affecting 0.1% of the general population. To characterize the molecular and clinical variabilities among patients with primary SS, we integrated transcriptom ...

WILEY2022

m6A methylation potentiates cytosolic dsDNA recognition in a sequence-specific manner

Andrea Ablasser, Muhammet Fatih Gülen

Nucleic acid sensing through pattern recognition receptors is critical for immune recognition of microbial infections. Microbial DNA is frequently methylated at the N-6 position of adenines (m6A), a modification that is rare in mammalian host DNA. We show ...

ROYAL SOC2021

Inhibition of mitophagy drives macrophage activation and antibacterial defense during sepsis

Johan Auwerx, Antoine Jalil

Mitochondria have emerged as key actors of innate and adaptive immunity. Mitophagy has a pivotal role in cell homeostasis, but its contribution to macrophage functions and host defense remains to be delineated. Here, we showed that lipopolysaccharide (LPS) ...

AMER SOC CLINICAL INVESTIGATION INC2020

The Transcription Factor Nfix Requires RhoA-ROCK1 Dependent Phagocytosis to Mediate Macrophage Skewing during Skeletal Muscle Regeneration

Giuliana Rossi

Macrophages (MPs) are immune cells which are crucial for tissue repair. In skeletal muscle regeneration, pro-inflammatory cells first infiltrate to promote myogenic cell proliferation, then they switch into an anti-inflammatory phenotype to sustain myogeni ...

2020

Immune serum-activated human macrophages coordinate with eosinophils to immobilize Ascaris suum larvae

Nicola Harris, Julia Esser-von Bieren, Beatrice Volpe, Kathleen Shah, Tiffany Babette Angélique Bouchery

Helminth infection represents a major health problem causing approximately 5 million disability-adjusted life years worldwide. Concerns that repeated anti-helminthic treatment may lead to drug resistance render it important that vaccines are developed but ...

WILEY2020

Role of Nimrod receptors in the Drosophila melanogaster cellular immune response

Claudia Melcarne

The use of modern molecular biology tools and simple but powerful tractable model organisms such as Drosophila has contributed significantly to our recent advances in the innate immunity field, notably phagocytosis. Since 2001, many phagocytic transmembran ...

EPFL2020

Durable and controlled depletion of neutrophils in mice

Caroline Anne-Lyse Contat, Etienne Meylan, Jessica Christine Vazquez, Justine Pascual, Julien Robert Rémi Faget, Gael Luis Boivin, Pierre-Benoit Bernard Ancey, Aspasia Gkasti

Neutrophils are an essential part of the innate immune system. To study their importance, experimental studies often aim to deplete these cells, generally by injecting anti-Ly6G or anti-Gr1 antibodies. However, these approaches are only partially effective ...

Nature Research2020

TGR5/Cathepsin E signaling regulates macrophage innate immune activation in liver ischemia and reperfusion injury

Kristina Schoonjans, Johan Auwerx, Qi Wang

The role and underlying mechanism of plasma membrane-bound G protein-coupled bile acid receptor (TGR5) in regulating macrophage innate immune activation during liver ischemia and reperfusion (IR) injury remains largely unclear. Here, we demonstrated that T ...

2021

Transport and programmed release of nanoscale cargo from cells by using NETosis

Daniel Meyer, Ardemis Anoush Boghossian, Alessandra Antonucci, Alice Judith Gillen

Cells can take up nanoscale materials, which has important implications for understanding cellular functions, biocompatibility as well as biomedical applications. Controlled uptake, transport and triggered release of nanoscale cargo is one of the great cha ...

ROYAL SOC CHEMISTRY2020

House dust mite drives proinflammatory eicosanoid reprogramming and macrophage effector functions

Nicola Harris, Julia Esser-von Bieren, Tiffany Babette Angélique Bouchery

Background Eicosanoid lipid mediators play key roles in type 2 immune responses, for example in allergy and asthma. Macrophages represent major producers of eicosanoids and they are key effector cells of type 2 immunity. We aimed to comprehensively track e ...

WILEY2019

Two Nimrod receptors, NimC1 and Eater, synergistically contribute to bacterial phagocytosis in Drosophila melanogaster

Bruno Lemaitre, Andrew Jonathan Bretscher, Jan Paul Dudzic, Elodie Julie Virginie Ramond, Claudia Melcarne

Eater and NimC1 are transmembrane receptors of the Drosophila Nimrod family, specifically expressed in haemocytes, the insect blood cells. Previous ex vivo and in vivoRNAi studies have pointed to their role in the phagocytosis of bacteria. Here, we have cr ...

2019

Adult Drosophila Lack Hematopoiesis but Rely on a Blood Cell Reservoir at the Respiratory Epithelia to Relay Infection Signals to Surrounding Tissues

Bruno Lemaitre, Elodie Julie Virginie Ramond

The use of adult Drosophila melanogaster as a model for hematopoiesis or organismal immunity has been debated. Addressing this question, we identify an extensive reservoir of blood cells (hemocytes) at the respiratory epithelia (tracheal air sacs) of the t ...

Cell Press - Elsevier2019

Endothelial Calcineurin Signaling Restrains Metastatic Outgrowth by Regulating Bmp2

Mauro Delorenzi, Laureline Wetterwald, Nadine Fournier, Sina Nassiri, Borja Prat Luri

Calcineurin/NFAT signaling is active in endothelial cells and is proposed to be an essential component of the tumor angiogenic response. Here, we investigated the role of endothelial calcineurin signaling in vivo in physiological and pathological angiogene ...

2019

Lysozyme-Induced Transcriptional Regulation of TNF-alpha Pathway Genes in Cells of the Monocyte Lineage

Paul Joseph Dyson, Florence Armand, Romain Hamelin, Gianni Sava, Isabelle Mireille Claude Schepens

Lysozyme is one of the most important anti-bacterial effectors in the innate immune system of animals. Besides its direct antibacterial enzymatic activity, lysozyme displays other biological properties, pointing toward a significant anti-inflammatory effec ...

2019

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