Aaosphaeria arxii CBS 175.79
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA250693 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR1587956_1.fastq.gz | Fastqsanger.gz | |||
| SRR1587956_2.fastq.gz | Fastqsanger.gz |
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Project description:Recents studies in mice and humans demonstrated the relevance of H2S-synthesising enzymes (such as CTH, CBS and MPST) in adipose tissue physiology and preadipocyte differentiation into adipocytes. Here, we aimed to investigate the combined role of CTH, CBS and MPST in the preservation of adipocyte protein persulfidation and adipogenesis. Joint CTH, CBS and MPST gene knockdown was achieved treating fully human adipocytes with siRNAs against these transcripts (siRNA_MIX). Adipocyte protein persulfidation was analyzed by a mass spectrometry label-free quantitative approach coupled with a dimedone-switch method for protein labeling and purification. The proteomic analysis quantified 216 proteins with statistically different persulfidation levels in KD cells compared to control adipocytes. In fully differentiated adipocytes, CBS and MPST mRNA and protein levels were abundant, whereas CTH expression was very low. Of note, siRNA_MIX administration resulted in a significant decrease in CBS and MPST expression, without impacting on CTH. Dual CBS and MPST gene knockdown resulted in decreased expression of relevant genes for adipocyte biology, including adipogenesis, mitochondrial biogenesis and lipogenesis, but increased proinflammatory- and senescence-related genes, in parallel to a significant disruption in adipocyte protein persulfidation pattern. While among less persulfidated proteins, we identified several relevant proteins for adipocyte adipogenesis and function, among the most persulfidated, key mediators of adipocyte inflammation and dysfunction, but also some proteins that might have a positive role of adipogenesis were found. In conclusion, current study indicates that joint knockdown of CBS and MPST (but not CTH) in adipocytes impairs adipogenesis and promotes inflammation, possibly by disrupting the pattern of protein persulfidation in these cells, and suggesting that these enzymes were required for the functional maintenance of adipocytes.
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Project description:To reveal the role of sulfur metabolism genes in memory formation processes, transcriptome libraries were obtained from the heads of 5-day-old naive males. The libraries were generated from Drosophila strains created in our laboratory with deleted cbs genes ( CBS-/-(5) and CBS-/-(8), cse (CSE-/-) and strains with double deletion of cbs and cse genes (CBS-/-,CSE-/-(1) and (CBS-/-,CSE-/-(2). Strain 58492, in which deletions were introduced by the CRISP/CAS9 method, was used as a control strain.
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Project description:Investigation of whole genome gene expression level changes in Pichia stipitis CBS 6054 grown aerobically in xylose, compared to the same strain grown aerobically in glucose. A six array study using total RNA recovered from three separate cultures of Pichia stipitis CBS 6054 grown in glucose and three separate cultures of Pichia stipitis CBS 6054 grown in xylose. Each array measures the expression level of 374,100 probes (average probe length 53.6 +/- 4.1 nt) tiled across the Pichia stipitis CBS 6054 genome with a median spacing distance of 33 nt. During data processing, probes are filtered to include only those probes corresponding to annotated protein-coding genes.
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Project description:CIMP (CpG island methylator phenotype) is an epigenetic molecular subtype, observed in multiple malignancies and associated with the epigenetic silencing of tumour suppressors. Currently, for most cancers including gastric cancer [GC], mechanisms underlying CIMP remain poorly understood. We sought to discover molecular contributors to CIMP in GC, by performing global DNA methylation, gene expression, and proteomics profiling across 14 gastric cell lines, followed by similar integrative analysis in 50 GC cell lines and 467 primary GCs. We identify the cystathionine beta-synthase enzyme (CBS) as a highly recurrent target of epigenetic silencing in CIMP GC. Likewise, we show that CBS epimutations are significantly associated with CIMP in various other cancers, occurring even in premalignant gastroesophageal conditions and longitudinally linked to clinical persistence. Of note, CRISPR deletion of CBS in normal gastric epithelial cells induces widespread DNA methylation changes that overlap with primary GC CIMP patterns. Reflecting its metabolic role as a gatekeeper interlinking the methionine and homocysteine cycles, CBS loss in vitro also causes reductions in the anti-inflammatory gasotransmitter hydrogen sulphide (H2S), with concomitant increase in NF-κB activity. In a murine genetic model of CBS-deficiency, preliminary data indicate upregulated immune-mediated transcriptional signatures in the stomach. Our results implicate CBS as a bi-faceted modifier of aberrant DNA methylation and inflammation in GC and highlights H2S donors as a potential new therapy for CBS-silenced lesions.
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