Comparison of microRNA expression profiling in pig spleens among three time points after infection by Chinese I genotype strain of Toxoplasma gondii
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ABSTRACT:
ORGANISM(S): Sus scrofa
PROVIDER: GSE113130 | GEO | 2018/12/31
REPOSITORIES: GEO
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Project description:The objectives of the present study were to analyze the changes on miRNA expression profile in porcine brain using next-generation sequencing (NGS) technology and bioinformatic analysis at 10, 25 and 50 days post inoculation (DPI) with Chinese I genotype strain of T. gondii. Compared to control group, 87, 68, and 135 differentially expressed miRNAs (DEMs) were found in the brains of infected pigs at 10, 25, and 50 DPI, respectively. The results not only showed that the miRNA expression of the host can be changed by the invasion of T. gondii, but also revealed the differences on the regulation of the key biological processes or pathways involved in host responses between the acute and chronic T. gondii infection.
2022-03-07 | GSE176143 | GEO
Project description:Background: Histomonas meleagridis is an anaerobic, intercellular parasite that infects the Galliformes such as turkeys and chickens. In recent years, the reemergence of Histomoniasis has caused serious economic losses as drugs to treat the disease have been banned. At present, studies on H. meleagridis mainly focus on virulence, gene expression analysis, and the innate immunity of the host. However, there are no studies on differential expression of miRNAs (DEMs) in host immune and inflammatory response induced by H. meleagridis infection in chickens. In this study, the expression profile of cecum miRNA at 10 and 15 days post-infection (DPI) with Chinese JSYZ-F strain H. meleagridis was studied by high-throughput sequencing. Results: Compared with the control group, 94 and 127 DEMs were found in the cecum of infected chickens at 10 DPI (CE vs CC) and 15 DPI (CEH vs CCH), respectively, of which 60 DEMs were shared at two-time points. Gene Ontology (GO) enrichment analysis of the target genes of DEMs showed that 881 and 1027 GO terms were significantly enriched at 10 and 15 DPI. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways of the target genes of DEMs showed that only 5 and 3 pathways were significantly enriched at 10 and 15 DPI, respectively. The integrated analysis of miRNA–gene network revealed that the DEMs played important roles in the host immune and inflammatory responses to H. meleagridis infection by dynamically regulating the expression of immune and inflammation-related cytokines. Conclusion: Our results not only suggested that host miRNA expression was dynamically altered by H. meleagridis and host, but also revealed that more miRNAs and genes were involved in the later stage of the disease. In addition, host and H. meleagridis regulated the expression of immune and inflammation-related cytokines to respond to H. meleagridis infection. Our results will contribute to future research on miRNA-target interaction during H. meleagridis infection in chickens and provide new ideas for H. meleagridis control.
2022-01-21 | GSE193859 | GEO
Project description:Background: Histomonas meleagridis is an anaerobic, intercellular parasite, which infects gallinaceous birds such as turkeys and chickens. In recent years, the reemergence of Histomoniasis has caused serious economic losses as drugs to treat the disease have been banned. At present, research of H. meleagridis focuses on virulence, gene expression analysis, and the innate immunity of the host. However, there are no study on the differentially expressed miRNAs (DEMs) associated with the liver induced by H. meleagridis. In this research, high-throughput sequencing was used to analyze the expression profile of liver miRNA at 10 and 15 days post-infection (DPI) in chickens infected with Chinese JSYZ-F strain H. meleagridis. Results: Compared with the uninfected control, 120 and 118 DEMs were found in the liver of infected chickens at 10 DPI and 15 DPI, respectively, of which 74 DEMs were shared at two-time points. Differentially expressed miRNAs were classified into three types according to the time of infection: L1, 45 miRNAs differentially expressed only at 10 DPI, were predicted to target 1646 genes; L2, 43 miRNAs differentially expressed only at 15 DPI, were predicted to target 2257 genes; L3, 75 miRNAs differentially expressed at both 10 DPI and 15 DPI, were predicted to target 1623 genes. A total of 89, 87 and 41 significantly enriched GO terms (p<0.05) were identified at L1, L2 and L3, respectively. The KEGG pathway analysis of differentially expressed miRNA target genes were shown that 3, 4 and 5 significantly enriched KEGG pathway (p<0.05) were identified at L1, L2 and L3, respectively. Conclusion: This article suggested that liver miRNA expression was dynamically altered by H. meleagridis and host and showed that the expression pattern of the L1 class DEMs were more favourable for controlling the development of the inflammatory response, whereas the L2 class DEMs were more favourable for enhancing the inflammatory response. Inflammation-associated miRNA expression patterns were consistent with the liver inflammatory process after artificial infection. The results of the study laid the foundation for an in-depth analysis of the pathogenic mechanism of H. meleagridis from the perspective of host miRNAs.
2023-10-01 | GSE240051 | GEO
Project description:The protozoan pathogen Toxoplasma gondii has the unique ability to develop a chronic infection in the brain of its host. The T. gondii develops cysts within the neurons that are resilient against the host immune response and current therapeutics. The bradyzoite parasites within the cyst have a sugar-protein-rich wall and a slow-replication cycle, allowing them to remain hidden from the host. This intracellular encysted lifestyle of T. gondii has made them recalcitrant to molecular analysis in vivo. Here, we have enriched for T. gondii brain cysts 21 to 150 days post-infection (DPI). RNA and protein from bradyzoites was isolated from each timepoint. Deep sequencing of transcripts expressed during these three timepoints showed many of the identified proteins are transcriptionally expressed at a high level. Approximately one-third are more enriched during bradyzoite conditions compared to tachyzoites, and approximately half are expressed at similar levels during each phase. We have expanded the transcriptional profile of in vivo bradyzoites to 120 DPI. The RNA sequencing depth of in vivo bradyzoite T. gondii was over 250-fold greater than was have been previously, which allowed us to identify low level transcripts and novel bradyzoite-specific isoforms.
2019-07-11 | GSE134099 | GEO
Project description:This study used virological, histological, and global gene expression data to compare the virulence of two 2009 pH1N1 isolates from human (A/California/04/2009) and swine (A/swine/Alberta/25/2009) to that of a 1918-like classical swine influenza virus (A/swine/Iowa/1930) in a pig model of infection. The overall goal of this study was to characterize the clinical, histological, virological and global gene expression responses to three distinct influenza A isolates in an experimental pig model of influenza infection. We compared the pathogenesis of two pH1N1 viruses, one derived from a human patient (A/CA/04/09 [CA09]) and the other from swine (A/swine/Alberta/25/2009 [Alb09]), with that of the 1918-like classical swine influenza virus (A/swine/Iowa/1930 [IA30]) in the pig model. Both pH1N1 isolates induced clinical symptoms such as coughing, sneezing, decreased activity, fever, and labored breathing in challenged pigs, but IA30 virus did not cause any clinical symptoms except fever. Although both the pH1N1 viruses and the IA30 virus caused lung lesions, the pH1N1 viruses were shed from the nasal cavities of challenged pigs whereas the IA30 virus was not. Microarray was used to assess global gene expression in the lungs at 3 and 5 days post-infection. Crossbred pigs fwere obtained from a healthy herd free of SIV and porcine reproductive and respiratory syndrome virus. These studies included two experiments: the classical H1N1 SIV (IA30) study was completed at Kansas State University's biosafety level 2 (BSL-2) facility in compliance with the Institutional Animal Care and Use Committee at Kansas State University, and the pH1N1 virus study was completed at the Central States Research Center (CSRC), Inc., BSL-3 facility (Oakland, NE), in compliance with the Institutional Animal Care and Use Committee at CSRC. In each experiment, 10 pigs were inoculated with noninfectious cell culture supernatant as controls. For the classical H1N1 SIV experiment, 10 4-week-old crossbred pigs were inoculated intratracheally with 10^6 50% tissue culture infective doses (TCID50)/pig of egg-derived IA30 virus. For the pH1N1 virus experiment, 10 4-week-old crossbred pigs were inoculated intratracheally with 10^6 TCID50/pig of either egg-derived CA/09 or Alb/09 virus. Five animals per group were euthanized at 3 and 5 days postinfection (dpi), respectively.
2012-02-13 | E-GEOD-35738 | biostudies-arrayexpress
Project description:The symptoms of bipolar depression (BD) overlapping with unipolar depression (UD) makes it difficult to perform an accurate diagnosis. We aimed to investigate the potential of plasma miRNAs to distinguish BD from UD. In this study, we used the Affymetrix Genechip miRNA 4.0 Array to investigate the profiles of differentially expressed miRNAs (DEMs) in peripheral blood plasma. As a result, forty-two DEMs (17 with downregulation and 25 with upregulation) between UD and BD patients.
2020-06-12 | GSE152267 | GEO
Project description:The Tsw gene conferring Tomato spotted wilt virus (TSWV) resistance in Capsicum chinense breaks down at high temperatures. Here, we performed RNA-Seq analysis under different temperature conditions to uncover the resistance breakdown mechanism using TSWV-resistant C. chinense ‘PI152225’ and susceptible ‘Habanero’. RNA-Seq analysis revealed only a few differentially expressed genes (DEGs) at 1 dpi but 2,096 and 551 DEGs between plants at 25°C and 30°C at 5 dpi. At 5 dpi, there were more upregulated than downregulated DEGs at both temperatures. Gene ontology analysis revealed 30 enriched biological process terms and nine molecular function terms that were enriched among upregulated DEGs at 25°C. We performed KEGG analysis with 805 upregulated DEGs at both temperatures to explore the mechanism underlying resistance breakdown at high temperature. The DEGs were mapped into 10 KEGG pathways. ACC oxidase genes in the ethylene biosynthesis pathway were differentially expressed upon pathogen challenge. Most DEGs from the biological process, molecular function, and cellular components categories involved in resistance responses were downregulated at 30°C. Finally, genes involved in abscisic acid-mediated stress signaling were differentially expressed at high temperature. These results shed light on host–virus interactions and temperature-dependent resistance mechanisms in pepper at the molecular level.
2019-06-01 | GSE124386 | GEO
Project description:During influenza pneumonia, the alveolar epithelial cells of the lungs are targeted by influenza virus. The distal airway stem cells (DASCs) and proliferating alveolar type II (AT2) cells are reported to be putative lung repair cells. However, their relative spatial and temporal distribution is still unknown during influenza-induced acute lung injury. Here, we investigated the distribution of these cells, and concurrently performed global proteomic analysis of the infected lungs to elucidate and link the cellular and molecular events during influenza pneumonia recovery. BALB/c mice were infected with a sub-lethal dose of influenza H1N1 virus. From 5 to 25 days post-infection (dpi), mouse lungs were subjected to histopathologic and immunofluorescence analysis to probe for global distribution of lung repair cells (using P63 and KRT5 markers for DASCs; PCNA and SPC markers for AT2 cells). At 7 and 15 dpi, infected mouse lungs were also subjected to protein mass spectrometry for relative protein quantification. DASCs appeared only in the damaged area of the lung from 7 dpi onwards, reaching a peak at 21 dpi, and persisted at 25 dpi. However, no differentiation of DASCs to AT2 cells was observed by 25 dpi. In contrast, AT2 cells began proliferating from 7 dpi to replenish its population. Mass spectrometry and gene ontology analysis revealed prominent innate immune response at 7 dpi, which shifted towards adaptive immune responses by 15 dpi. Hence, proliferating AT2 cells but not DASCs contribute to AT2 cell regeneration following transition from innate to adaptive immune responses during the early phase of recovery from influenza pneumonia up to 25 dpi.
2020-04-17 | PXD014967 | Pride
Project description:Studies of mucosal infections have mainly focused on the acute phase at single timepoints, whilst little is known about the host recovery phase. We characterised temporal changes to colonic epithelial cells during the late steady-state, clearance and recovery phases of Citrobacter rodentium infection in C57BL/6 mice. Changes to immuno-metabolism and innate immunity peaked at 10-13 days post infection (DPI) and recovered from 17 DPI. Multiple DNA sensing receptors (ZBP1, STING), pyroptotic (Caspase-1 and -8, GSDMD) and necroptotic (RIPK3, MLKL) proteins were enriched; Ripk3, but not Mlkl, knockout mice presented exacerbated diarrhoea and pathology at 10 DPI. We defined a new “host recovery” phase, characterised by IFN responses and manifested by high abundance of the immunoproteasome and MHC class II subunits, which is unresolved 4 weeks following pathogen clearance. These findings represent a paradigm shift in our understanding of mucosal surfaces recovery from infection.
2022-01-05 | PXD022230 | Pride
Project description:Once Haemonchus contortus infects sheep it receives a series of host attacks, especially those relating to the infected animal’s T lymphocytes immune response. To obtain a systematic genome-wide profiling of the T lymphocyte genes involved, microarrays were used to compare gene expression between 0 days post infection (dpi), 3-5 dpi, 25-30 dpi and 60dpi in infected sheep. In this 853, 242 and 42 differentially expressed genes were acquired in the 3d vs. 0d comparison, the 30d vs. 0d comparison and the 60d vs. 0d comparison, respectively. Gene Ontology and pathway analysis indicated that modulated genes including SUGT1, FCER1G, CD23, IL-13 and galectin-14, were mostly associated with cellular homeostasis maintaining and immune response.
2012-11-16 | GSE42302 | GEO