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Transcriptional Signatures Predict Phenotypic Variations of Candida auris

ABSTRACT: Transcriptional Signatures Predict Phenotypic Variations of Candida auris

PROVIDER: PRJNA697848 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13576978.fastq.gz	Fastqsanger.gz
	SRR13576979.fastq.gz	Fastqsanger.gz
	SRR13576980.fastq.gz	Fastqsanger.gz
	SRR13576981.fastq.gz	Fastqsanger.gz
	SRR13576982.fastq.gz	Fastqsanger.gz

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Transcriptional Signatures Predict Phenotypic Variations of Candida auris

Project description:Transcriptomic analysis of different Candida auris clinical isolates with distinct antifungal susceptibility profiles.

2021-01-30 | GSE165762 | GEO

Transcriptome Signatures Predict Phenotypic Variations of <i>Candida auris</i>.

Project description:Health care facilities are facing serious threats by the recently emerging human fungal pathogen Candida auris owing to its pronounced antifungal multidrug resistance and poor diagnostic tools. Distinct C. auris clades evolved seemingly simultaneously at independent geographical locations and display both genetic and phenotypic diversity. Although comparative genomics and phenotypic profiling studies are increasing, we still lack mechanistic knowledge about the C. auris species diversification and clinical heterogeneity. Since gene expression variability impacts phenotypic plasticity, we aimed to characterize transcriptomic signatures of C. auris patient isolates with distinct antifungal susceptibility profiles in this study. First, we employed an antifungal susceptibility screening of clinical C. auris isolates to identify divergent intra-clade responses to antifungal treatments. Interestingly, comparative transcriptional profiling reveals large gene expression differences between clade I isolates and one clade II strain, irrespective of their antifungal susceptibilities. However, comparisons at the clade levels demonstrate that minor changes in gene expression suffice to drive divergent drug responses. Finally, we functionally validate transcriptional signatures reflecting phenotypic divergence of clinical isolates. Thus, our results suggest that large-scale transcriptional profiling allows for predicting phenotypic diversities of patient isolates, which may help choosing suitable antifungal therapies of multidrug-resistant C. auris.

| S-EPMC8079977 | biostudies-literature

Transcriptomics and phenotyping define signatures associated with echinocandin resistance in Candida auris

Project description:Transcriptomic analysis of different Candida auris clinical isolates

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Haploid and Deploid for Candida auris

Project description:The expression difference for haploid and deploid of Candida auris

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Candida auris proteomic profiling

Project description:In this study, we designed a novel antifungal agent, PQA-Az-13 that demonstrated antifungal activity against C. auris biofilms. Cellular proteomics indicated that PQA-Az-13 partially or completely inhibited numerous enzymatic proteins in C. auris biofilms, particularly those involved in both amino acid biosynthesis and metabolism processes, as well as in general energy-producing processes. Due to its hydrophobic nature and limited aqueous solubility, PQA-Az-13 was encapsulated in cationic liposomes and characterized by biophysical and spectral techniques. PQA-Az-13 liposomes demonstrated enhanced antifungal activity levels against both C. auris in in vitro biofilms and ex vivo skin colonization models.

2023-12-07 | PXD046911 | Pride

A comprehensive analysis of the effect of quorum-sensing molecule 3-oxo-C12-homoserine lactone on Candida auris and Candida albicans

Project description:Candida auris occupies similar niches in various infections as Pseudomonas aeruginosa; however, the details of their interspecies communication remain largely unknown. To gain deeper insights into this bacterial–fungal relationship, phenotypic and transcriptomic analyses were conducted in the presence of the primary P. aeruginosa quorum-sensing molecule, 3-oxo-C12-homoserine lactone (HSL), against C. auris, with the results compared to those of C. albicans. We demonstrated a significant HSL-induced reduction in adhesion of C. auris cells at 100- and 200-μM concentrations. Furthermore, HSL exposure reduced intracellular iron and zinc levels and modulated C. auris metabolism toward beta-oxidation, which may be associated with the observed reduction in in vivo virulence at lower HSL concentrations compared with C. albicans. RNA-sequencing transcriptome analysis revealed 67 and 306 upregulated genes, as well as 111 and 168 downregulated genes, in response to 100 and 200 μM HSL, respectively. We identified 45 overlapping upregulated and 25 overlapping downregulated genes between the two HSL concentrations. Our findings indicate that HSL-induced effects are not specific to C. albicans; additionally, several characteristics are present in C. auris but not in C. albicans following HSL exposure. Similar to other Candida-derived C12 compounds (e.g., farnesol), HSL reduces several C. auris survival strategies, which may significantly influence the nature of P. aeruginosa–C. auris co-habitation.

2024-07-10 | GSE271513 | GEO

Candida auris-macrophage cellular interactions and transcriptional response

Project description:The pathogenic yeast Candida auris represents a global threat of the utmost clinical relevance. This emerging fungal species is remarkable in its resistance to commonly used antifungal and its persistence in the nosocomial settings. The innate immune system is one the first lines of defense preventing the dissemination of pathogens in the host. C. auris is susceptible to circulating phagocytes, namely neutrophils. However, some gaps of knowledge remain regarding the cellular and transcriptional responses towards other phagocytic lineages. In this work, we examined the interactions of this yeast with macrophages. We found that macrophages avidly phagocytose C. auris, however intracellular replication is not inhibited, indicating that C. auris is able to resist the killing mechanisms imposed by the phagocyte. Intracellular replication does not induce macrophage lysis, however. The transcriptional response of C. auris to macrophage phagocytosis is very similar to other members of the CUG clade (C. albicans, C. tropicalis, C. parapsilosis, C. lusitaniae), i.e., downregulation of transcription/translation and upregulation of alternative carbon metabolism pathways, transporters and induction of oxidative stress response and proteolysis. Gene family expansions are common in this yeast, and we found that many of these genes are induced in response to macrophage co-incubation. Among these, amino acid and oligopeptide transporters, as well as lipases and proteases are upregulated. Thus, C. auris shares key transcriptional signatures shared with other fungal pathogens and capitalizes on the expansion of gene families coding for potential virulence attributes that allow its survival, persistence, and evasion of the innate immune system.

2024-06-28 | GSE236004 | GEO

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Project description:[Candida] auris Assembly

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Candida auris whole cell proteomics

Project description:Whole cell proteomics of Candida auris MMC1 and MMC2 strains.

2019-05-24 | PXD013456 | Pride

Candida auris extracellular vesicle proteomics

Project description:Proteomic analysis of extracellular vesicles from Candida auris MMC1 and MMC2 strains.

2021-11-12 | PXD026768 | Pride