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Nicola Harris

Cette personne a quitté l’EPFL

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Publications associées (53)

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Interactions between fibroblastic reticular cells and B cells promote mesenteric lymph node lymphangiogenesis

Nicola Harris, Lalit Kumar Dubey

Lymphatic growth (lymphangiogenesis) within lymph nodes functions to promote dendritic cell entry and effector lymphocyte egress in response to infection or inflammation. Here we demonstrate a crucial role for lymphotoxin-beta receptor (LT beta R) signalin ...

Springer Nature2017

Human U6 promoter drives stronger shRNA activity than its schistosome orthologue in Schistosoma mansoni and human fibrosarcoma cells

Nicola Harris, Raphaël Duvoisin

Blood flukes or schistosomes are the causative agents of human schistosomiasis, one of the major neglected tropical diseases. Draft genome sequences have been reported for schistosomes, but functional genomics tools are needed to investigate the role and e ...

2011

Antibodies and IL-3 support helminth-induced basophil expansion

Manuel Kulagin, Nicola Harris, Mario Michael Zaiss, Julia Esser-von Bieren, Tina Herbst

Basophils are powerful mediators of Th2 immunity and are present in increased numbers during allergic inflammation and helminth infection. Despite their ability to potentiate Th2 immunity the mechanisms regulating basophil development remain largely unknow ...

National Academy of Sciences2012

Hookworms Evade Host Immunity by Secreting a Deoxyribonuclease to Degrade Neutrophil Extracellular Traps

Nicola Harris, Romain Guiet, Arne Seitz, Beatrice Volpe, Tiffany Babette Angélique Bouchery, Kathleen Shah, Mati André Marie Moyat, Manuel Kulagin

Hookworms cause a major neglected tropical disease, occurring after larvae penetrate the host skin. Neutrophils are phagocytes that kill large pathogens by releasing neutrophil extracellular traps (NETs), but whether they target hookworms during skin infec ...

CELL PRESS2020

Antibodies Trap Tissue Migrating Helminth Larvae and Prevent Tissue Damage by Driving IL-4Rα-Independent Alternative Differentiation of Macrophages

Nicola Harris, Alessandra Piersigilli, Romain Guiet, Arne Seitz, Beatrice Volpe, Ilaria Mosconi, Julia Esser-von Bieren, Fei Chen

Approximately one-third of the world's population suffers from chronic helminth infections with no effective vaccines currently available. Antibodies and alternatively activated macrophages (AAM) form crucial components of protective immunity against chall ...

Public Library of Science2013

Recent Advances in Type-2-Cell-Mediated Immunity: Insights from Helminth Infection

Nicola Harris

Type-2-cell-mediated immune responses play a critical role in mediating both host-resistance and disease-tolerance mechanisms during helminth infections. Recently, type 2 cell responses have emerged as major regulators of tissue repair and metabolic homeos ...

Elsevier2017

Tissue macrophages suppress viral replication and prevent severe immunopathology in an interferon-I-dependent manner in mice

Nicola Harris

The innate immune response plays an essential role in the prevention of early viral dissemination. We used the lymphocytic choriomeningitis virus model system to analyze the role of tissue macrophages/Kupffer cells in this process. Our findings demonstrate ...

2010

Cell-wall deficient L. monocytogenes L-forms feature abrogated pathogenicity

Nicola Harris

Stable L-forms are cell wall-deficient bacteria which are able to multiply and propagate indefinitely, despite the absence of a rigid peptidoglycan cell wall. We investigated whether L-forms of the intracellular pathogen L. monocytogenes possibly retain pa ...

Frontiers Research Foundation2014

Neuronal regulation of type 2 innate lymphoid cells via neuromedin U

Nicola Harris, Tiffany Babette Angélique Bouchery, Kathleen Shah

Group 2 innate lymphoid cells (ILC2s) regulate inflammation, tissue repair and metabolic homeostasis1, and are activated by host-derived cytokines and alarmins1. Discrete subsets of immune cells integrate nervous system cues2, 3, 4, but it remains unclear ...

2017

House dust mite drives proinflammatory eicosanoid reprogramming and macrophage effector functions

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

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

The Mucosal Adjuvant Cholera Toxin B Instructs Non-Mucosal Dendritic Cells to Promote IgA Production Via Retinoic Acid and TGF-β

Nicola Harris

It is currently unknown how mucosal adjuvants cause induction of secretory immunoglobulin A (IgA), and how T cell-dependent (TD) or -independent (TI) pathways might be involved. Mucosal dendritic cells (DCs) are the primary antigen presenting cells driving ...

Public Library of Science2013

Intimate gut interactions: helminths and the microbiota

Nicola Harris

Changing exposure to intestinal helminths, or alterations in our intestinal microbiome, have been independently proposed to underlie the increasing incidence of chronic inflammatory diseases including allergy, autoimmunity and inflammatory bowel disease (I ...

Inst Biochemistry & Cell Biology2016

Lymphotoxin-Dependent B Cell-FRC Crosstalk Promotes De Novo Follicle Formation and Antibody Production following Intestinal Helminth Infection

Nicola Harris, Lalit Kumar Dubey, Ilaria Mosconi, Luc Xavier Marie Lebon

Secondary lymphoid tissues provide specialized niches for the initiation of adaptive immune responses and undergo a remarkable expansion in response to inflammatory stimuli. Although the formation of B cell follicles was previously thought to be restricted ...

Elsevier2016

To B or not to B: B cells and the Th2-type immune response to helminths

Nicola Harris

Similar T helper (Th)2-type immune responses are generated against different helminth parasites, but the mechanisms that initiate Th2 immunity, and the specific immune components that mediate protection against these parasites, can vary greatly. B cells ar ...

2011

Specific repair by discerning macrophages

Nicola Harris, Tiffany Babette Angélique Bouchery

American Association for the Advancement of Science2017

Cre-mediated cell ablation contests mast cell contribution in models of antibody- and T cell-mediated autoimmunity

Nicola Harris

Immunological functions of mast cells remain poorly understood. Studies in Kit mutant mice suggest key roles for mast cells in certain antibody- and T cell-mediated autoimmune diseases. However, Kit mutations affect multiple cell types of both immune and n ...

Elsevier2011

NMR spectroscopy of single sub-nL ova with inductive ultra-compact single-chip probes

Giovanni Boero, Nicola Harris, Marco Grisi, Beatrice Volpe, Franck Vincent

Nuclear magnetic resonance (NMR) spectroscopy enables non-invasive chemical studies of intact living matter. However, the use of NMR at the volume scale typical of microorganisms is hindered by sensitivity limitations, and experiments on single intact orga ...

Nature Research2017

Small intestinal resident eosinophils maintain gut homeostasis following microbial colonization

Nicola Harris, Romain Hamelin, Florence Armand, Kathleen Shah, Mati André Marie Moyat

The intestine harbors a large population of resident eosinophils, yet the function of intestinal eosinophils has not been explored. Flow cytometry and whole-mount imaging identified eosinophils residing in the lamina propria along the length of the intesti ...

CELL PRESS2022

IL-4R alpha-Expressing B Cells Are Required for CXCL13 Production by Fibroblastic Reticular Cells

Nicola Harris, Lalit Kumar Dubey

Adaptive type 2 immune responses against the intestinal helminth Heligmosomoides polygyrus (Hp) require the interaction of follicle-associated CXCR5(+) dendritic cells with naive T cells in the draining mesenteric lymph nodes (mLNs). However, the source of ...

2019

The emerging roles of eosinophils in mucosal homeostasis

Nicola Harris, Kathleen Shah

Eosinophils are granulocytes, typically implicated as end-stage effector cells in type-II immune responses. They are capable of producing a wide array of pre-formed molecules which render them with vast potential to influence a wide variety of processes. N ...

NATURE PUBLISHING GROUP2020