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H3K56ac profiling in Candida albicans by high throughput sequencing

ABSTRACT: H3K56ac profiling in Candida albicans by high throughput sequencing

PROVIDER: PRJEB56179 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR10226908_1.fastq.gz	Fastqsanger.gz
	ERR10226908_2.fastq.gz	Fastqsanger.gz
	ERR10226909_1.fastq.gz	Fastqsanger.gz
	ERR10226909_2.fastq.gz	Fastqsanger.gz
	ERR10226910_1.fastq.gz	Fastqsanger.gz

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H3K56ac profiling in Candida albicans by high throughput sequencing

Project description:In C. albicans the sirtuin Hst3p is responsible for removing the acetyl group of the Lys 56 of the H3 histone which is particularly abundant in yeasts and contributes to fungal genome integrity and virulence. Here we identified the H3K56ac patterns across Candida albicans genome in cells maintained for 28 h in YPD at 25°C in the presence or absence of 10 mM nicotinamide (used in this study as Hst3p inhibitor). Chromatin immunoprecipitation was carried out using an anti-H3K56ac antibody, whereas input samples were taken before addition the antibody. Two biological replicates were performed for each condition.

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Genome-wide analysis of H3K56ac across C. albicans genome in hyphae-inducing conditions

Project description:In the present study, we investigated whether the acetylation of H3K56, known as relevant for C. albicans virulence, might affect the Candida-macrophages interaction. Therefore, by the mean of the non-specific Hst3 inhibitor nicotinamide (NAM), we evaluated whether the alteration of H3K56 acetylation would affect the secretion of soluble factors by C. albicans. In particular, we tested the effect of the two different Candida growth-conditioned media (with and without NAM) on murine macrophages at the morphological and functional levels. In addition, we analyzed transcriptome modifications and genome enrichment of H3K56ac in the same experimental conditions.

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Project description:Candida albicans is a ubiquitous opportunistic pathogen that is the most prevalent cause of hospital-acquired fungal infections. In mammalian hosts, C. albicans is engulfed by phagocytes that attack the pathogen with DNA-damaging reactive oxygen species (ROS). Acetylation of histone H3 lysine 56 (H3K56) by the fungal-specific histone acetyltransferase Rtt109 is important for yeast model organisms to survive DNA damage and maintain genome integrity. To assess the importance of Rtt109 for C. albicans pathogenicity, we deleted the predicted homologue of Rtt109 in the clinical C. albicans isolate, SC5314. C. albicans rtt109 -/- mutant cells lack acetylated H3K56 (H3K56ac) and are hypersensitive to genotoxic agents. Additionally, rtt109 -/- mutant cells constitutively display increased H2A S129 phosphorylation and elevated DNA repair gene expression, consistent with endogenous DNA damage.

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