RNA-seq of liver stage-derived parasites from wild-type and TCRδ-/- mice
ABSTRACT: P. berghei ANKA parasites were collected from the blood at 74h after infection of wild-type and TCRδ-/- mice with 2x10^4 sporozoites (samples were pooled from 3 mice/ group) and mRNA was sequenced by RNA-seq.
Project description:Systemic injection of salivary glands P. berghei ANKA GFP-sporozoites into IFNAR-/- mice or salivary glands extracts from non-infected mosquitoes into wild-type C57BL/6 mice. Data obtained were compared with part of hybridizations from experiment E-TABM-839
Project description:Global gene expression profiling of P. berghei liver stages at 36h from WT and Pb SSPELD KO parasites to investigate the changes in RNA expression levels in Pb SSPELD parasites. Overall design: HepG2 cells were infected with Plasmodium berghei Wild type and SSPELD knock out sporozoites
Project description:The purpose of this research is to identify and evaluate the global gene expression of the rodent malaria parasites Plasmodium yoelii, Plasmodium berghei and Plasmodium chabaudi blood-stage parasites and specifically compare the blood stage gene expression profiles of samples derived from previous studies on Plasmodium falciparum, Plasmodium vivax and Plasmodium knowlesi Overall design: Mice were infected by intraperitoneal injections of P. berghei ANKA, P. chabaudi AS or P. yoelii 17x parasitized erythrocytes and parasitaemia and parasite stages were monitored by thin blood smears stained with Giemsa. Mice infected with P. chabaudi were highly synchronized and terminal bled every 2 hours under anesthesia over the course of 24 hr. For P. berghei and P. yoelii infection, mice were terminal bleed and the stage-specific parasitized erythrocytes were separated via Nycodenz density gradient. The ring stage interface was isolated, washed and subjected to ex vivo culture, which was then collected every 2 hr over the course of 24 hr over a complete IDC life-cycle. Samples labeled with Cy5 were hybridized against a reference RNA pool labeled with Cy3, consisting of equal amounts of P. yoelii or P. berghei or P. chabaudi RNA from each time point.
Project description:In the rodent malaria parasite Plasmodium berghei, we found that an AP2 family transcription factor designated AP2-L plays a critical role in the development of the liver stage. Using DNA microarray analysis we showed that the expression of several genes, including those of parasitophorous vacuole membrane proteins, was significantly decreased in the early liver stage of AP2-L-depleted parasites. Gene expression of P. berghei sporozoites was compared between wild type and AP2-G KO parasites. Five biologically independent experiments were performed for each genotype.
Project description:In the rodent malaria parasite Plasmodium berghei, we found that an AP2 family transcription factor designated AP2-L plays a critical role in the development of the liver stage. Using DNA microarray analysis we showed that the expression of several genes, including those of parasitophorous vacuole membrane proteins, was significantly decreased in the early liver stage of AP2-L-depleted parasites. Overall design: Gene expression of P. berghei sporozoites was compared between wild type and AP2-G KO parasites. Five biologically independent experiments were performed for each genotype.
Project description:The study was performed in order to determine molecular markers potentially involved in the susceptibility of young rats to the infection with Plasmodium berghei Anka Overall design: In this study, we compared the microarrays of spleens (using the rat Codelink developed by Amersham Biosources) obtained from young rats infected by Plasmodium berghei Anka with those of uninfected age matched controls.
Project description:We report the dual RNA-sequencing of host and pathogen transcriptomes during Plasmodium berghei liver-stage development in vitro. Unlike traditional transcriptomic approaches that analyze RNA reads separately from host and pathogen, a dual-approach maps the mixed reads to each annotated genome within samples of pathogen-infected host cells. This is a powerful method, as host and pathogen transcriptomes can be analyzed simultaneously. We have taken advantage of this dual-RNA sequencing approach in order to gain insight into Plasmodium liver stage development within host hepatocytes. Huh7.5.1 hepatocytes were infected in vitro with P. berghei sporozoites freshly dissected from infected Anopheles stephansi mosquitos, and cells were collected throughout liver-stage development. This included samples collected at time zero (uninfected hepatocytes and sporozoites before infection), time 24 hours post infection (when the sporozoites have transformed into trophozoites), and time 48-50 hours post infection (when the trophozoites have transformed into liver-stage schizonts). Overall design: Dual RNA-sequencing of P. berghei-GFP and human RNA in infected and uninfected Huh7.5.1 cells
Project description:Plasmodium berghei ANKA infection in mice is used as a model for human cerebral malaria, the most severe complication of Plasmodium falciparum infection. The response of brain cells such as microglia has been little investigated, and may play a role in the pathogenesis or regulation of cerebral malaria. We showed previously that microglia are activated in P. berghei infections, and that Type 1 Interferon signaling is important for activation. This dataset contains the transcriptome of brain microglia of infected mice in the presence and absence of Type I interferon signaling, with the aim of identifying the genes involved in this pathway in microglia during experimental cerebral malaria. Refererence: Capuccini et al 2016, Scientific Reports, 6:39258 The global gene expression profiles from RNA of microglia isolated from uninfected and P berghei-infected wild-type C57BL/6 mice and and IFNA Receptor Knock-out mice using Illumina Beadarrays. Overall design: Total RNA from Female C57BL/6 wildtype and IFNA Receptor knock-out mice injected with 105 Plasmodium berghei ANKA infected red blood cells intraperitoneally compared to untreated mice of the same genotype.
Project description:Recent advances in high throughput sequencing methodologies allow the opportunity to probe in depth the transcriptomes of organisms including important human pathogens. In this project, we are using Illumina sequencing technology to analyze the transcriptome (RNA-Seq) of experimentally accessible stages of the mouse malaria parasite, P. berghei ANKA. The aim is to make transcriptional landscape maps of different life cycle stages of P. berghei ANKA at single base pairs resolution. This data is part of a pre-publication release. For information on the proper use of pre-publication data shared by the Wellcome Trust Sanger Institute (including details of any publication moratoria), please see http://www.sanger.ac.uk/datasharing/