Maternal Schistosomiasis CD45+
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE162075 | GEO | 2021/01/26
REPOSITORIES: GEO
Similar Datasets
Project description:Despite strong evidence that prior helminth infection exerts a protective effect against the development of metabolic disease, a major gap exists in understanding the mechanism(s) underlying this protection. We previously found that Schistosoma mansoni infection induces dramatic transcriptional alterations in hepatic macrophage metabolism, and that this correlates with protection from high fat diet (HFD) induced atherosclerosis and glucose intolerance in male ApoE-/- mice. We sought in the present study to determine the broad effects of S. mansoni exposure on the myeloid lineage using the ApoE-/- HFD model. We uncovered that macrophages derived from the bone marrow of S. mansoni infected male mice have dramatically increased oxygen consumption and mitochondrial mass compared to those from uninfected mice. This shift is accompanied by increased glucose shuttling into TCA cycle intermediates and decreased cholesterol esters. When we examined the role of biological sex in schistosome induced modulation. We found that S. mansoni infection does not reliably protect ApoE-/- female mice from HFD induced weight gain or glucose intolerance. The sex-dependent effect of infection extends to myeloid precursors, where the metabolic phenotype of bone marrow derived macrophages from infected females are the opposite of those from infected males. Overall, these data present the first evidence that S. mansoni systemically modulates the myeloid compartment in a sex-dependent manner.
2020-11-01 | GSE144447 | GEO
Project description:Background: Drugs given to treat cancer (chemotherapy) can weaken the human immune system. But it can also become weaker because of aging. Interleukin (IL)-7, a molecule produced naturally in the body, can help improve the function of the immune system. Researchers want to study the effects of IL-7 on immune system function in two different groups of older people. One group will be people who have received vaccines before IL-7. The other group will be people who have received Vaccines after IL-7.
Objectives: To evaluate the effect of IL-7 on the immune system responses to vaccines in older people following chemotherapy.
Eligibility: People at least 60 years of age who have recently finished chemotherapy for breast, colon, or bladder cancer.
Design:
* People in the study will be screened with a physical examination, medical history, and blood tests. Other screening tests, such as tumor imaging, may also need to be performed.
* Everyone will receive a series of five different vaccines commonly used to prevent diseases. We will compare the responses of people in Sequence 1 who will receive vaccines before IL-7 with the responses of people in Sequence 2 who received the same vaccines after IL-7.
* The vaccines will be given randomly in two Arms at different times.
* Arm 1: diphtheria and tetanus, polio, pneumonia (with two booster shots), hepatitis B (with two booster shots), and hepatitis A (with one booster shot),
* Arm 2: hepatitis A (with one booster shot), hepatitis B (with two booster shots), pneumococcal (with two booster shots), diphtheria and tetanus, polio, pneumonia (with two booster shots)
* There are 5 vaccines to be given to each subject, following one of two randomly assigned sequences of vaccine administration (Sequence 1 or Sequence 2).
* The first vaccine arm contains the two diphtheria protein containing vaccines tetanus and diphtheria (Td) and pneumococcal conjugate 13 (PCV13) and polio. The second vaccine arm contains the Hepatitis A and Hepatitis B vaccines. Subjects will either get tetanus, diphtheria, polio, and pneumonia vaccines before IL-7 therapy (Sequence 1) or hepatitis A and hepatitis B vaccines before IL-7 therapy (Sequence 2). The response to vaccines will be evaluated 4 weeks after vaccination. This will be followed by IL-7 therapy, then administration of the other group of vaccines. Therefore, subjects on both arms will receive the same set of vaccines, just at different times with respect to IL-7 therapy.
| 2105545 | ecrin-mdr-crc
Project description:Transcriptome analysis throughout the lifecycle of the helminth Schistosoma mansoni.
2009-12-31 | E-MEXP-2094 | biostudies-arrayexpress
Project description:Maternal Schistosomiasis CD45+
| PRJNA680505 | ENA
Project description:Background: The parasitic trematode Schistosoma mansoni is one of the major causative agents of human schistosomiasis, which afflicts 200 million people worldwide. Praziquantel is still the only drug used for schistosomiasis treatment and reduction in drug efficiency has prompting the search for new therapeutic compounds against this disease. Our group has demonstrated that heme crystallization into hemozoin (Hz) within S. mansoni gut is a major heme detoxification route involving lipid droplets in this process and acting as a potential chemotherapeutical target. In the present work, we investigated the effects of the antimalarial quinine (QN) in a murine schistosomiasis model by using a combination of biochemical, cell biology and molecular biology approaches. Methodology/Principal Findings: Treatment of S. mansoni-infected female Swiss mice with daily intraperitoneal injections of QN (75mg/kg/day) from 11th to 17th day after infection decreased not only total, males and females worm burden (46.2 %-51.0 %), eggs production, but also the granulomatous reaction to parasite eggs trapped in the liver. These effects correlated with a significant impairment of Hz production (40%) specifically in S. mansoni females, being parallel to remarkable ultrastructural changes in female worms, particularly in the gut epithelium. Microarray gene expression analysis indicated that QN treatment increased the expression of transcripts related to musculature, protein synthesis and repair mechanisms. Conclusions: The overall significant reduction in several disease burden parameters by QN treatment indicates that interference of Hz formation in S. mansoni is a valid chemotherapeutical target for development of new antischistosomal drugs.
2009-07-13 | GSE14751 | GEO
Project description:IL-10 is produced by macrophages in diverse immune settings and is critical in limiting immune-mediated pathology. In helminth infections macrophages are an important source of IL-10, however the molecular mechanism underpinning production of IL-10 by these cells is poorly characterized. Here, bone marrow derived macrophages exposed to Excretory/Secretory (E/S) products released by Schistosoma mansoni cercariae rapidly produce IL-10 as a result of MyD88-mediated activation of MEK/ERK/RSK and p38. The phosphorylation of these kinases was triggered by TLR2 and TLR4 and converged on activation of the transcription factor CREB. Uptake of cercarial E/S products by phagocytosis was critical for the production of IL-10 and the activation of MAPKs and CREB, which indicates that interactions between E/S products with TLR2 and TLR4, may be occurring in endosomes. Following phosphorylation, CREB is recruited to a novel regulatory element in the Il10 promoter and is also responsible for regulating a network of genes involved in metabolic processes, such as glycolysis, the tricarboxylic acid cycle and oxidative phosphorylation. Moreover, skin resident tissue macrophages, which encounter S. mansoni E/S products during infection, are the first monocytes to produce IL-10 in vivo early after infection with S. mansoni cercariae. The early and rapid release of IL-10 by these cells has the potential to condition the dermal microenvironment encountered by immune cells recruited to this infection site. To conclude, we propose a mechanism by which CREB regulates the production of IL-10 by macrophages in the skin, but also has a major effect on their metabolic state. CREB binding sites 3 pooled samples of stimulated bone marrow macrophages
2015-07-08 | E-GEOD-64844 | biostudies-arrayexpress
Project description:Short Description: This study contains 7 RRBS samples, including 3 ex vivo CD4+ Trm (2 x spleen and 1 x bone marrow) and 4 blood tetanus (TT) and measles (Me) antigen-reactive memory CD4+ cells before and one day post DTaP (diphtheria-tetanus-pertussis) and MMR (measles-mumps-rubella) vaccination, respectively (1 x tetanus D0, 1 x tetanus D1, 1 x measles D0, 1 x measles D1).
Technology: Illumina HiSeq 2500
Filetype: fastq format
| EGAD00001007886 | EGA
Project description:The helminth Schistosoma Mansoni is known to generate a regulatory B cell population that can suppress in multiple murine experimental models. Microarray comparison allows for a greater understanding as to how these cells are generated and their implications in immune regulation.
2014-03-28 | E-MTAB-2100 | biostudies-arrayexpress
Project description:IL-10 is produced by macrophages in diverse immune settings and is critical in limiting immune-mediated pathology. In helminth infections macrophages are an important source of IL-10, however the molecular mechanism underpinning production of IL-10 by these cells is poorly characterized. Here, bone marrow derived macrophages exposed to Excretory/Secretory (E/S) products released by Schistosoma mansoni cercariae rapidly produce IL-10 as a result of MyD88-mediated activation of MEK/ERK/RSK and p38. The phosphorylation of these kinases was triggered by TLR2 and TLR4 and converged on activation of the transcription factor CREB. Uptake of cercarial E/S products by phagocytosis was critical for the production of IL-10 and the activation of MAPKs and CREB, which indicates that interactions between E/S products with TLR2 and TLR4, may be occurring in endosomes. Following phosphorylation, CREB is recruited to a novel regulatory element in the Il10 promoter and is also responsible for regulating a network of genes involved in metabolic processes, such as glycolysis, the tricarboxylic acid cycle and oxidative phosphorylation. Moreover, skin resident tissue macrophages, which encounter S. mansoni E/S products during infection, are the first monocytes to produce IL-10 in vivo early after infection with S. mansoni cercariae. The early and rapid release of IL-10 by these cells has the potential to condition the dermal microenvironment encountered by immune cells recruited to this infection site. To conclude, we propose a mechanism by which CREB regulates the production of IL-10 by macrophages in the skin, but also has a major effect on their metabolic state.
2015-07-08 | GSE64844 | GEO
Project description:During its life cycle, the helminth parasite Schistosoma mansoni uses the freshwater snail Biomphalaria glabrata as an intermediate host to reproduce asexually generating cercariae for infection of the human definitive host. Following invasion of the snail, the parasite develops from a miracidium to a mother sporocyst and releases excretory secretory products (ESPs) that likely influence the outcome of host infection. To better understand molecular interactions between these ESPs and the host snail defence system, we determined gene expression profiles of haemocytes from S. mansoni resistant or -susceptible strains of B. glabrata exposed in vitro to S. mansoni ESPs (20ug/ml) for 1 h, using a 5K B. glabrata cDNA microarray.
2014-12-31 | E-MTAB-2135 | biostudies-arrayexpress