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Healthy peripheral neutrophils total RNA-Seq: Serum Amyloid P component is an essential element of resistance against Aspergillus fumigatus

ABSTRACT: Healthy peripheral neutrophils total RNA-Seq: Serum Amyloid P component is an essential element of resistance against Aspergillus fumigatus

PROVIDER: PRJNA686440 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13274555_1.fastq.gz	Fastqsanger.gz
	SRR13274555_2.fastq.gz	Fastqsanger.gz
	SRR13274556_1.fastq.gz	Fastqsanger.gz
	SRR13274556_2.fastq.gz	Fastqsanger.gz
	SRR13274557_1.fastq.gz	Fastqsanger.gz

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Healthy peripheral neutrophils total RNA-Seq: Serum Amyloid P component is an essential element of resistance against Aspergillus fumigatus

Project description:Serum amyloid P component (SAP; APCS gene, also known as Pentraxin 2, PTX2), is a component of the humoral arm of innate immunity involved in resistance to bacterial infection and regulation of tissue remodeling. The present study was designed to investigate the role of SAP/PTX2 in antifungal resistance. SAP-deficient Apcs-/- mice showed a dramatic increase in susceptibility to A. fumigatus infection. The defective anti-fungal resistance of gene targeted mice was rescued by in vitro opsonization of A. fumigatus conidia and in vivo administration of murine SAP. Mouse and human SAP bound conidia, activated the complement cascade and increased phagocytosis by mouse and human neutrophils. Defective resistance of Apcs-/- SAP-deficient mice was associated with defective in vivo recruitment of neutrophils and phagocytosis in the lungs. The opsonic activity of SAP was dependent on the classical pathway of complement activation. In immunosuppressed mice, SAP administration protected hosts against A. fumigatus infection and death. In the context of a study of hematopoietic stem-cell transplantation, genetic variation in the human APCS gene was associated with susceptibility to invasive pulmonary aspergillosis. Thus, SAP is a fluid phase pattern recognition molecule essential for resistance against A. fumigatus. The results reported here also suggest that SAP has therapeutic potential against an infectious agent which represents a formidable clinical challenge.

2021-04-20 | GSE163533 | GEO

Serum amyloid P component is an essential element of resistance against Aspergillus fumigatus.

Project description:Serum amyloid P component (SAP, also known as Pentraxin 2; APCS gene) is a component of the humoral arm of innate immunity involved in resistance to bacterial infection and regulation of tissue remodeling. Here we investigate the role of SAP in antifungal resistance. Apcs-/- mice show enhanced susceptibility to A. fumigatus infection. Murine and human SAP bound conidia, activate the complement cascade and enhance phagocytosis by neutrophils. Apcs-/- mice are defective in vivo in terms of recruitment of neutrophils and phagocytosis in the lungs. Opsonic activity of SAP is dependent on the classical pathway of complement activation. In immunosuppressed mice, SAP administration protects hosts against A. fumigatus infection and death. In the context of a study of hematopoietic stem-cell transplantation, genetic variation in the human APCS gene is associated with susceptibility to invasive pulmonary aspergillosis. Thus, SAP is a fluid phase pattern recognition molecule essential for resistance against A. fumigatus.

| S-EPMC8213769 | biostudies-literature

Transcriptome study of A. fumigatus hyphae and human neutrophils

Project description:The infections with the human pathogenic fungus A. fumigatus is an emerging problem. The infections process and the reaction of the immune systeme to the infection is still not complete understood. So we analyzed the response of A. fumigatus to human neutrophils to get insights of these interaction.

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Gene expression profiles of human immature dendritic cells after 12h of co-cultivation with Aspergillus fumigatus, Candida albicans and LPS

Project description:In a whole-transcriptome study, cellular responses of DCs confronted with the fungi A. fumigatus, C. albicans or the bacterial cell wall component lipopolysaccharide (LPS) were investigated. Therefore, DCs of four independent donors were harvested after 12 hours co-culture with A. fumigatus, C. albicans and LPS and analyzed with Affymetrix whole genome expression arrays. In general, transcriptomic analysis revealed a clustering of the A. fumigatus- and C. albicans-stimulated DCs. However, LPS and fungi-dependent gene expression showed more common similarities compared to the untreated control.

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Project description:Genomic DNA from five strains, Aspergillus fumigatus Af71, Aspergillus fumigatus Af294, Aspergillus clavatus, Neosartorya fenneliae, and Neosartorya fischeri, were co-hybridized with that of Aspergillus fumigatus Af293 and compared.

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The effects of Serum Amyloid A on gene expression profile in HUVECs

Project description:This study attemps to study the global effects of Serum Amyloid A (SAA) on human endothelial gene expression profile in different time points. Keywords: time course

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Small RNA sequencing of Aspergillus fumigatus

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Project description:In a whole-transcriptome study, cellular responses of DCs confronted with the fungi A. fumigatus, C. albicans or the bacterial cell wall component LPS were investigated. Therefore DCs of four independent donors were analyzed after 6 hours co-culture with A. fumigatus, C. albicans and LPS by Affymetrix whole genome expression arrays. In general, transcriptomic analysis revealed a clustering of the A. fumigatus and C. albicans stimulated DCs. However, LPS and fungi-dependent gene expression showed more common similarities compared to the untreated control. Stimulation with LPS induced a differential regulation of 2793 genes after 6h, while confrontation with A. fumigatus and C. albicans resulted in 743 and 974 differentially regulated genes, respectively. Kruppel-like factor 4 (KLF4) was identified as the only transcription factor that was down-regulated in DCs by both fungi but induced by stimulation with LPS.

2015-06-23 | GSE69723 | GEO

tRF & tiRNA sequencing of Aspergillus fumigatus

Project description:Aspergillus fumigatus is an important human pathogen and a leading fungal killer. This study aimed to determine the tRNA fragment and tRNA half repertoire of A. fumigatus in wild-type conidia and mycelium grown for 24 or 48 hours in liquid culture.

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