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Impact of Heligmosomoides polygyrus infection on microbiota

ABSTRACT: Investigating the impact of Heligmosomoides polygyrus infection on the intestinal bacterial community in mouse.

PROVIDER: PRJEB10642 | ENA |

REPOSITORIES: ENA

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Heligmosomoides polygyrus

Project description:Heligmosomoides polygyrus overview

| PRJNA301368 | ENA

Gene expression analysis of ex-Foxp3 Th2 cells during Heligmosomoides polygyrus infection

Project description:Gene expression of Treg cells that have lost Foxp3 expression and acquired Il4 expression following adoptive transfer into T-cell deficient mice (HpTR-IL-4gfp+), cmpared to conventional Treg cells isolated from H. polygyrus-infected wild-type mice (HpTR) and Th2 cells generated from naïve T cells following adoptive transfer into H. polygyrus-infected T-cell deficient mice (nT-IL-4gfp+). Immunity to intestinal helminth infections requires the rapid activation of T helper 2 (Th2) cells. However, simultaneous expansion of regulatory CD4+Foxp3+ T (Treg) cells impedes protective responses, resulting in chronic infections. The ratio between regulatory and effector T cells can therefore determine the outcome of infection. The re-differentiation of Treg into T helper (Th) cells has been identified in hyper-inflammatory diseases. In this study, we asked whether ex-Treg Th2 cells develop and contribute to type 2 immunity. Using multi-gene reporter and fate-reporter systems we demonstrate that a significant proportion of Th2 cells derive from Foxp3+ cells following Heligmosomoides polygyrus infection and airway allergy. Ex-Foxp3 Th2 cells exhibit characteristic Th2 effector functions and provide immunity to H. polygyrus. Through selective deletion of Il4ra on Foxp3+ cells, we further demonstrate IL-4 is required for the development of ex-Foxp3 Th2 cells. Collectively, our findings indicate that converting Treg cells into Th2 cells could concomitantly enhance Th2 cells and limit Treg-mediated suppression.

2017-05-04 | GSE98518 | GEO

Genome sequencing of Heligmosomoides polygyrus bakeri

Project description:Genome sequencing of Heligmosomoides polygyrus bakeri

| PRJEB15396 | ENA

RNAseq of murine small intestinal organoid cultures treated with Type 1 (IFNg) or Type 2 (IL4+IL13) cytokines in the presence or absence of excretory/secretory (ES) products of the helminth parasite Heligmosomoides polygyrus

Project description:Heligmosomoides polygyrus is a natural intestinal parasite of mice which exerts wide ranging modulatory effects on the immune system. This experiment was designed to investigate its abillity to modify intestinal epithelial cells, which form part of its natural niche. We tested gene expression in vitro, in differentiating organoids of small intestinal origin, exposed to cytokines and the released products of the parasite, termed HpES.

2021-11-12 | E-MTAB-11118 | biostudies-arrayexpress

Heligmosomoides polygyrus

Project description:Exosomes secreted by a nematode parasite transfer small RNAs to mammalian cells and regulate genes of the innate immune system [Heligmosomoides polygyrus]

| PRJNA241496 | ENA

Duodenal tissues and mesenteric lymph nodes from wild-type (BALB/c) and MIF deficient mice were compared in the steady state and at day 5 following infection with the gastrointestinal helminth parasite Heligmosomoides polygyrus

Project description:We have found that macrophage migration inhibitory factor (MIF) is essential for the development of effective immunity to the intestinal helminth Heligmosomoides polygyrus, even following vaccination which induces sterile immunity in wild-type mice. In the context of a Type 2 infection, MIF plays a critical role in polarizing macrophages into the protective alternatively-activated phenotype, and that STAT3 signaling may make a previously unrecognized contribution to immunity to helminths.

2019-10-18 | GSE139007 | GEO

The production of Excretory-Secretory molecules from Heligmosomoides polygyrus bakeri fourth stage larvae varies between mixed and single sex cultures.

Project description:In this study, the composition of ES of male and female L4 stage Heligmosomoides polygyrus bakeri in the presence (cultured together) or absence (cultured alone) of the opposite sex was examined using mass spectrometry.

2021-09-10 | PXD023759 | Pride

NanoString analysis of mouse granulomas induced by H. polygyrus infection

Project description:Heligmosomoides polygyrus larvae induce a strong intestinal granuloma response within their murine host, which has been associated with resistance. Immune cells, mostly alternatively activated macrophages and eosinophils, accumulate around the tissue encysted parasites to immobilize and damage/kill developing worms. In a one dose (bolus) experimental infection, infected C57Bl/6 mice are unable to clear parasites which results in chronic infection with high worm burdens. However, using a frequent dose trickle model of infection, we, like others, have found that C57Bl/6 mice can clear infection. The nanoString data included here measure the expression of key myeloid genes within the granuloma tissue from bolus and trickle infections. Our results highlight the importance of the granuloma in the host’s ability to clear H. polygyrus and emphasise the need to study this key tissue in more depth, rather than using correlates such as general intestinal or systemic responses.

2022-12-28 | GSE164319 | GEO

Intestinal tissues (duodenum) from wild-type (BALB/c) and MIF deficient mice were compared in the steady state and at two different time points (day 3 and day 7) following infection with the gastrointestinal helminth parasite Heligmosomoides polygyrus

2019-10-18 | GSE139008 | GEO

Exosomes secreted by a nematode parasite transfer small RNAs to mammalian cells and regulate genes of the innate immune system [Heligmosomoides polygyrus]

Project description:In mammalian systems, extracellular small RNAs can operate in a paracrine manner to communicate information between cells, relying on transport within vesicles. “Foreign” small RNAs derived from bacteria, plants and parasites have also been detected in mammalian body fluids, sparking interest in whether these could mediate inter-species communication. However, there is no mechanistic framework for RNA-mediated interspecies communication and the active movement of RNA via vesicles has not been shown outside of mammals. Here we demonstrate that specific microRNAs and Y RNAs are packaged into vesicles secreted by a gastrointestinal nematode, Heligmosomoides polygyrus, which naturally infects mice. Total RNA was extracted from the secretion product of adult worms and compared to the profile of small RNAs in adult worms, eggs and infective larvae.

2014-11-25 | E-GEOD-55978 | biostudies-arrayexpress

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