Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1133633 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR29793811_1.fastq.gz | Fastqsanger.gz | |||
| SRR29793811_2.fastq.gz | Fastqsanger.gz | |||
| SRR29793812_1.fastq.gz | Fastqsanger.gz | |||
| SRR29793812_2.fastq.gz | Fastqsanger.gz | |||
| SRR29793813_1.fastq.gz | Fastqsanger.gz |
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Project description:Schistosomiasis is one of the most socioeconomically harmful neglected tropical diseases in the world. It occurs following infection from parasites of the Schistosoma genus, such as Schistosoma mansoni, which must transition within a molluscan and mammalian host to survive. Previous chemical analyses of schistosome-molluscan interactions indicate that schistosomes orientate towards potential hosts partially through chemosensation, displaying a preference for naïve (uninfected) hosts. Recent advances in proteomic techniques enable sophisticated comparative analyses between infected and naïve snail host proteins. This study aimed to compare the snail-conditioned water (SCW) released by F1 resistant, infected and naïve Biomphalaria glabrata to identify potential attractants and deterrents.
2019-09-26 | PXD015129 | Pride
Project description:miRNA profiling of S. japonicum infected mouse plasma comparing control untreated mouse plasma. Schistosomiasis, caused by dioecious flatworms in the genus Schistosoma, is torturing people predominantly in the developing countries. Knowledge on schistosome-host interaction and its parasitism may result in the development of novel strategies for schistosomiasis control. MicroRNAs (miRNAs) are involved in a wide range of biological processes including development, cell proliferation, metabolism ,signal transduction, et al. Circulating miRNAs are not only important biomarker associated the process of pathogenesis in many diseases and also are able to regulate target gene expression in recipient cells, just like hormones. In the present study, we investigated circulating miRNA profile associated with S. japonicum infection in mice using miRNA microarray.
2015-09-30 | GSE63135 | GEO
Project description:The pathological outcomes of schistosomiasis are largely dependent on the molecular and cellular mechanisms of the host immune response. In this study, we demonstrate the variation of host gene expression which underlies the contrasting hepatic pathology observed between two inbred mouse strains following schistosome infection. Whole genome microarray analysis was employed in conjunction with histological and immunohistochemical analysis to define and compare the hepatic gene expression profiles and cellular composition associated with the hepatopathology observed in BALB/c and CBA mice during an active Schistosoma japonicum infection. Here, we show that the transcriptional profiles differ significantly between the two mouse strains with high statistical confidence. We identified specific genes correlating with the more severe pathology associated with CBA mice, as well as genes which may confer the milder degree of pathology associated with BALB/c mice. Generally, up-regulated genes were largely associated with immune and inflammatory responses, antigen processing and cytokine/chemokine activity. In BALB/c mice, neutrophil genes exhibited striking increases in expression, which coincided with significantly greater accumulation of neutrophils at granulomatous regions, compared to CBA mice. In contrast, up-regulated expression of eosinophil chemokine CCL24 in CBA mice paralleled the cellular influx of eosinophils to the hepatic granulomas. Additionally, there was greater down-regulation of genes involved in metabolic processes in CBA mice, reflecting the greater degree of liver damage in these mice. Genes involved in fibrosis showed similar levels of expression in both mouse strains. Genes associated with Th1 and Th2 responses showed no significant differences in expression between strains. These results provide a more complete picture of the molecular and cellular mechanisms which govern the pathological outcome of hepatic schistosomiasis. Furthermore, this improved understanding of schistosome immunopathogenesis in the murine model will provide the basis for a better appreciation of the complexities associated with chronic human schistosomiasis.
2010-11-30 | GSE25713 | GEO
Project description:Schistosome parasites lay up to a thousand eggs per day inside the veins of their mammalian hosts. The immature eggs deposited by females against endothelia of venules will embryonate within days. Approximately 30% of the eggs will migrate to the lumen of the intestine to continue the parasite life cycle. Many eggs, however, are trapped in the liver and intestine causing the main pathology associated with schistosomiasis mansoni and japonica, the liver granulomatous response. Excretory/Secretory egg proteins drive much of egg-induced pathogenesis of schistosomiasis mansoni, and Schistosoma japonicum induce a markedly distinct granulomatous response to that of S. mansoni.
2019-09-26 | PXD012835 | Pride
Project description:The pathological outcomes of schistosomiasis are largely dependent on the molecular and cellular mechanisms of the host immune response. In this study, we demonstrate the variation of host gene expression which underlies the contrasting hepatic pathology observed between two inbred mouse strains following schistosome infection. Whole genome microarray analysis was employed in conjunction with histological and immunohistochemical analysis to define and compare the hepatic gene expression profiles and cellular composition associated with the hepatopathology observed in BALB/c and CBA mice during an active Schistosoma japonicum infection. Here, we show that the transcriptional profiles differ significantly between the two mouse strains with high statistical confidence. We identified specific genes correlating with the more severe pathology associated with CBA mice, as well as genes which may confer the milder degree of pathology associated with BALB/c mice. Generally, up-regulated genes were largely associated with immune and inflammatory responses, antigen processing and cytokine/chemokine activity. In BALB/c mice, neutrophil genes exhibited striking increases in expression, which coincided with significantly greater accumulation of neutrophils at granulomatous regions, compared to CBA mice. In contrast, up-regulated expression of eosinophil chemokine CCL24 in CBA mice paralleled the cellular influx of eosinophils to the hepatic granulomas. Additionally, there was greater down-regulation of genes involved in metabolic processes in CBA mice, reflecting the greater degree of liver damage in these mice. Genes involved in fibrosis showed similar levels of expression in both mouse strains. Genes associated with Th1 and Th2 responses showed no significant differences in expression between strains. These results provide a more complete picture of the molecular and cellular mechanisms which govern the pathological outcome of hepatic schistosomiasis. Furthermore, this improved understanding of schistosome immunopathogenesis in the murine model will provide the basis for a better appreciation of the complexities associated with chronic human schistosomiasis. The gene expression profile of murine livers (BALB/c and CBA strains) were examined at 4, 7 and 9 weeks post infection with Schistosoma japonicum in comparison to that of uninfected controls. Three mice were utilised per group (Uninfected, 4, 7 and 9 weeks), totalling 24 samples. Microarray analysis was performed on individual RNA samples from each mouse.
2010-11-30 | E-GEOD-25713 | biostudies-arrayexpress
Project description:Schistosomiasis, caused by infection with Schistosoma trematode parasites, is one of the deadliest neglected tropical diseases in the world. The Schistosoma lifecycle involves the miracidia infection of an intermediate molluscan host, such as Biomphalaria glabrata. Dispersing B. glabrata attractant chemicals has been considered a method of minimising host infections. The attractiveness of B. glabrata is known to be reduced following infection; however, it remained unclear how the duration of infection affects attractiveness. Identifying excretory-secretory proteins (ESPs) abundant in attractive snail conditioned water (SCW) may facilitate the identification of attractants. This study obtained SCW ESPs from naïve snails and at different time-points post-miracidia exposure (PME; 16h-, 1 week, 2 weeks and 3 weeks), to identify those ESPs mediating Schistosome mansoni miracidia behavioural changes. The ESPs were quantitatively identified from all SCW samples using a label-free proteomic method and genome-derived protein databases of B. glabrata and S. mansoni. We found that changes in miracidia behaviour were similar upon exposure to naïve and 3W-PME SCW, including increased circling and quantity of miracidia in the field of view. Of the ESPs identified, 21 were shared in SCW of naïve and 3W-PME, and considered attractant candidates, including acetylcholine-binding protein and immune-related proteins such as biomphalysins and thioester-containing protein 1. Some biological processes were exclusive to attractant candidates, including obsolete pathogenesis and transmembrane transport activity. This suggests that compromised production of these proteins may diminish host attractiveness to miracidia. Additionally, several immune proteins were identified exclusively at 16-PME and 1W-PME, providing further information into changing B. glabrata immune responses throughout infection. These findings provide a list of attractant candidates to potentially decrease B. glabrata infection and minimise schistosomiasis.
2022-10-03 | PXD031989 | Pride
Project description:Liver fibrosis is a poor outcome of patients with schistosomiasis, impacting the quality of life and even survival. Eggs deposited in the liver were the main pathogenic factors of hepatic fibrosis in Schistosomiasis japonica. However, the mechanism of hepatic fibrosis in schistosomiasis remains not well defined and there is no effective measure to prevent and treat schistosome-induced hepatic fibrosis. In this study, we applied single-cell sequencing to primarily explore the mechanism of hepatic fibrosis in murine schistosomiasis japonica(n=1) and normal mouse was served as control(n=1). A total of 10,403 cells were included in our analysis and grouped into 18 major cell clusters. Th2 cells and NKT cells were obviously increased and there was a close communication between NKT cells and FASLG signaling pathway. Flow cytometry analysis indicated that the expression of Fasl in NKT cells, CD8+ T cell and NK cell were higher in SJ groups. Arg1, Retnla and Chil3, marker genes of alternatively activated macrophages (M2), were mainly expressed in mononuclear phagocyte(1) (MP(1)), suggesting that Kupffer cells might undergo M2-like polarization in fibrotic liver of schistosomiasis. CXCL and CCL signaling pathway analysis with CellChat showed that Cxcl16-Cxcr6, Ccl6-Ccr2 and Ccl5-Ccr5 were the most dominant L−R and there were close interactions between T cells and MPs. Overall, our research profiled a preliminary immunological network of hepatic fibrosis in murine schistosomiasis japonica, which might contribute to a better understanding of the mechanisms of liver fibrosis in schistosomiasis. NKT cells and CXCL and CCL signaling pathway such as Cxcl16-Cxcr6, Ccl6-Ccr2 and Ccl5-Ccr5 might be potential targets to alleviate hepatic fibrosis of schistosomiasis.
2022-12-16 | GSE220286 | GEO
Project description:Background: In immunodeficient mice, the growth and reproduction of schistosome were significantly retarded, and their virulence on the host was also weakened. Some studies have suggested that host factors including endocrine and immune signals can modulate the parasite’s development and maturation. However, it is still not clear for the molecular mechanisms underlying the growth and maturation regulation of schistosome. Methods: We isolated the total RNAs of female and male schistosome from immunodeficient SCID mice and immunocompetent BALB/c mice (labeled as S_F, S_M, B_F and B_M) obtained at five weeks post infection with cercariae, and constructed cDNA libraries of small RNAs using small RNA sample pre kit for small RNA deep sequencing on an Illumina (Solexa) platform. Results: Of the 122 (75 known and 47 novel) identified S. japonicum-specific miRNAs, statistical analysis revealed that 33 miRNAs (17 miRNAs were up-regulated and 16 were down-regulated, P<0.05) in female schistosome and 33 miRNAs (13 miRNAs were up-regulated and 20 were down-regulated, P<0.05) in male schistosome from SCID mice were differentially expressed when compared with those from BALB/c mice. The Venn diagram of the differentially expressed miRNAs shows 21 miRNAs were common between S_F vs B_ F and S_M vs B_M, 12 miRNAs were specific in female comparison, and other 12 were specific in male comparison. Conclusions: This study provides a comparative microRNAs expression profiles of schistosomes derived from SCID mice and immunocompetent BALB/c mice. A number of microRNAs were identified to potentially participate in regulating the development of schistosomes. These findings lay the foundation for schistosomiasis research in regulation of the development of schistosomes and provide a valuable resource for screening antischistosomal intervention targets or vaccine candidates.
2020-11-06 | GSE122318 | GEO
Project description:In schistosomiasis japonica, the egg-induced granulomatous response and the development of extensive hepatic fibrosis is the main pathology. Information regarding the specific mechanisms associated with granuloma regression and the subsequent recovery events in the host liver are still limited. In this study, a murine model of schistosomiasis japonica was used to characterise the multicellular pathways occurring during liver regeneration. Schistosoma japonicum-infected C57BL/6 mice were administered with the drug praziquantel (PZQ), on a daily basis for five consecutive days to eliminate all adult parasites. The pathological changes of PZQ-treated groups after 3, 6 and 7 weeks post PZQ treatment were examined, along with the assessment of cellular infiltration to the liver. PZQ treatment significantly reduced the degree of splenomegaly, granuloma density and the collagen deposition of liver fibrosis. The infiltration of inflammatory cells, including neutrophils, eosinophils and macrophages to the liver were as well significantly decreased. Transcriptomic analysis revealed the significant up-regulation of fatty acid metabolism genes and the identification of peroxisome proliferator-activated receptor alpha (PPAR-α) as the upstream regulator during the process of liver recovery. Aryl hydrocarbon receptor (AhR) signalling pathway that is involved primarily in the regulation of hepatic enzymes responsible for xenobiotic metabolism was as well differentially up-regulated. These findings indicate that schistosome egg-induced fibrogenesis process is reversible, and provide a better understanding of the regression mechanisms associated with hepatic schistosomiasis. These results hold important implications for the future alleviation of this and other fibrotic diseases of clinical significance.
2014-08-31 | GSE59276 | GEO