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Roles of PfAP2-EXP2 in Plasmodium falciparum blood-stage development

ABSTRACT: Roles of PfAP2-EXP2 in Plasmodium falciparum blood-stage development

PROVIDER: PRJNA748248 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15197284_1.fastq.gz	Fastqsanger.gz
	SRR15197284_2.fastq.gz	Fastqsanger.gz
	SRR15197285_1.fastq.gz	Fastqsanger.gz
	SRR15197285_2.fastq.gz	Fastqsanger.gz
	SRR15197286_1.fastq.gz	Fastqsanger.gz

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Roles of PfAP2-EXP2 in Plasmodium falciparum blood-stage development [ChIP-seq]

Project description:Genome-wide occupancy of PfAP2-EXP2 at the schizont stage

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Roles of PfAP2-EXP2 in Plasmodium falciparum blood-stage development [RNA-seq]

Project description:Effects of PfAP2-EXP2 knockdown on gene expression at the ring, trophozoite, and schizont stages

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Roles of PfAP2-EXP2 in Plasmodium falciparum blood-stage development [ChIP-seq]

Project description:Roles of PfAP2-EXP2 in Plasmodium falciparum blood-stage development [ChIP-seq]

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Roles of PfAP2-EXP2 in Plasmodium falciparum blood-stage development [RNA-seq]

Project description:Roles of PfAP2-EXP2 in Plasmodium falciparum blood-stage development [RNA-seq]

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PfAP2-O Influences Virulence Gene Transcription and Sexual Development in Plasmodium falciparum

Project description:The project examined the function of the putative transcription factor PfAP2-O from Plasmodium falciparum. This factor besides an essential function in sexual stages also influences variant, virulence associated genes. In a pull down analysis, HA-tagged PfAP2-O was immunoprecipitated and proteins assoaciated were analysed and three differentially appearing protein bands were analysed.

2021-06-28 | PXD026237 | Pride

Plasmodium falciparum PfAP2-G2 KO gametocyte microarray timecourse

Project description:Differentiation from asexual blood stages to sexual gametocytes is required for transmission of malaria parasites from the human to the mosquito host. Preventing gametocyte commitment and development would block parasite transmission, but the underlying molecular mechanisms behind these processes remain poorly understood. Here, we report that the ApiAP2 transcription factor, PfAP2-G2 (PF3D7_1408200) plays a critical role in the maturation of Plasmodium falciparum gametocytes. PfAP2-G2 binds to the promoters of a wide array of genes that are expressed at many stages of the parasite life cycle. Interestingly, we also find binding of PfAP2-G2 within the gene body of almost 3000 genes, which strongly correlates with the location of H3K36me3 and several other histone modifications as well as Heterochromatin Protein 1 (HP1), suggesting that occupancy of PfAP2-G2 in gene bodies may serve as an alternative regulatory mechanism. Disruption of pfap2-g2 does not impact asexual development, parasite multiplication rate, or commitment to sexual development but the majority of sexual parasites are unable to mature beyond stage III gametocytes. The absence of pfap2-g2 leads to overexpression of 28% of the genes bound by PfAP2-G2 and none of the PfAP2-g2 bound are downregulated, suggesting that it is a repressor. We also find that PfAP2-G2 interacts with chromatin remodeling proteins, a microrchidia (MORC) protein, and another ApiAP2 protein (PF3D7_1139300). Overall our data demonstrate that PfAP2-G2 is an important transcription factor that establishes an essential gametocyte maturation program in association with other chromatin-related proteins.

2021-02-01 | GSE160924 | GEO

Plasmodium falciparum PfAP2-G2 KO asexual microarray timecourse

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PfAP2-I-GFP-msp5MUT vs PfAP2-I-GFP 3D7 [timecourse 2]

Project description:Obligate intracellular parasites must efficiently invade host cells in order to mature and be transmitted. For the malaria parasite Plasmodium falciparum, invasion of host red blood cells (RBCs) is essential. Here we describe a parasite-specific transcription factor belonging to the Apicomplexan Apetala 2 (ApiAP2) family that is responsible for regulating the expression of a subset of merozoite genes involved in RBC invasion (PfAP2-I). Our genome-wide analysis by ChIP-seq shows that PfAP2-I interacts with a specific DNA motif in the promoters of these genes. msp5 transcription levels decrease when the PfAP2-I DNA-binding motif is mutated in PfAP2-I-GFP parasites, showing that PfAP2-I must bind the DNA motif in order for msp5 to be transcribed.

2016-12-31 | GSE77809 | GEO

PfAP2-I-GFP-msp5MUT vs PfAP2-I-GFP 3D7 [timecourse 1]

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P. falciparum heat shock response in a PfAP2-HS-defective population compared to its wild type control.

Project description:Periodic fever is the most characteristic clinical feature of human malaria. However, how parasites survive malarial febrile episodes, which often involve temperatures of >40ºC, is not known. Plasmodium falciparum cultures adapted to periodic heat shock were used to identify PfAP2-HS as a transcription factor that is essential for survival at febrile temperatures. Transcriptomic analysis was performed to compare the effect of heat shock in parasites presenting the wild type form of PfAP2-HS (10E) and parasites that have defects in this protein, either a premature stop codon mutation (10G) or the deletion of the entire pfap2-hs gene (10E_pfap2-hs). A timecourse analysis including samples taken before, during and after heat shock revealed that the initial phase of the PfAP2-HS-dependent response is largely restricted to hsp70-1 and hsp90.

2021-05-17 | GSE149392 | GEO

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