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Interaction of soil amoeba Protostelium aurantium with three pathogenic yeasts Candida spp.

ABSTRACT: Interaction of soil amoeba Protostelium aurantium with three pathogenic yeasts Candida spp.

PROVIDER: PRJNA478939 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7464840_1.fastq.gz	Fastqsanger.gz
	SRR7464840_2.fastq.gz	Fastqsanger.gz
	SRR7464781_1.fastq.gz	Fastqsanger.gz
	SRR7464781_2.fastq.gz	Fastqsanger.gz
	SRR7464841_1.fastq.gz	Fastqsanger.gz

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Interaction of soil amoeba Protostelium aurantium with three pathogenic yeasts Candida spp. (here: C. parapsilosis)

Project description:We investigated different escape and defense strategies of Candida parapsilosis against the natural fungivorous predator Protostelium aurantium using dual RNA-Seq. Trophozoites of the amoeba Protostelium aurantium were fed with C. parapsilosis and samples for RNA isolation were taken at time points 0 min (control), 30 min and 60 min. At indicated time points samples were shock frozen and used for RNA isolation. C. parapsilosis underwent rapid predation and intracellular killing of the yeast

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Interaction of soil amoeba Protostelium aurantium with three pathogenic yeasts Candida spp. (here: C. albicans and C. glabrata)

Project description:We investigated different escape and defense strategies of Candida glabrata and Candida albicans against the natural fungivorous predator Protostelium aurantium using dual RNA-Seq. While C. albicans was found to be very succesfull in preventing from amoeba recognition, C. glabrata in turn, was rapidly taken up but remained undigested with a comparably low transcriptional activity. Trophozoites of the amoeba Protostelium aurantium were fed seperately with the two fungal species and samples for RNA isolation were taken at time points 0 min (control), 30 min and 60 min. At indicated time points samples were shock frozen and used for RNA isolation. Samples for RNAseq were taken at time points 0 min (control), 30 min and 60 min. RNA samples from identical timepoints for C. albicans and C. glabrata were pooled for RNA sequencing. We investigated different escape and defense strategies of Candida spp. against natural fungivorous predator. While C. parapsilosis underwent rapid predation and intracellular killing of the yeast, C. albicans was found to be very succesfull in preventing from amoeba recognition. C. glabrata in turn, was rapidly taken up but remained undigested with a comparably low transcriptional activity.

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Interaction of soil amoeba Protostelium aurantium with three pathogenic yeasts Candida spp. (here: C. parapsilosis)

Project description:Interaction of soil amoeba Protostelium aurantium with three pathogenic yeasts Candida spp. (here: C. parapsilosis)

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Interaction of soil amoeba Protostelium aurantium with three pathogenic yeasts Candida spp.

Project description:This SuperSeries is composed of the SubSeries listed below.

2018-09-01 | GSE116535 | GEO

Interaction of soil amoeba Protostelium aurantium with three pathogenic yeasts Candida spp. (here: C. albicans and C. glabrata)

Project description:Interaction of soil amoeba Protostelium aurantium with three pathogenic yeasts Candida spp. (here: C. albicans and C. glabrata)

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The fungivorous phagocyte Protostelium aurantium targets redox homeostasis and cell wall integrity during intracellular killing of Candida parapsilosis

Project description:Predatory interactions among microbes are a major evolutionary driving force for biodiversity. The fungivorous amoeba Protostelium aurantium has a wide fungal food spectrum including major pathogenic members of the genus Candida. Phagocytic feeding by P. aurantium is highly effective with C. parapsilosis, a major pathogenic yeast. Here we show that upon ingestion by the amoeba C. parapsilosis is confronted with an oxidative burst and undergoes phagosomal lysis within minutes. On the fungal side, a functional genomic approach identified the fungal copper and redox homeostasis as primary targets of amoeba predation with the highly expressed copper exporter Crp1 and the peroxiredoxin Prx1 contributing to survival when encountering P. aurantium. The fungolytic activity was largely retained in intracellular vesicles of the amoebae. Following their isolation, the content of these vesicles induced immediate killing and lysis of C. parapsilosis. A proteomic analyses identified 56 vesicular proteins. Although fully unknown proteins were dominant, many of them could be categorized as hydrolytic enzymes presumably targeting the fungal cell wall, indicating that fungal cell wall structures are under predatory selection pressure in natural environments.

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