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ABSTRACT: Transcriptome data of Staphylococcus aureus after Oxacillin treatment

PROVIDER: PRJNA1174898 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR31045547_1.fastq.gz	Fastqsanger.gz
	SRR31045547_2.fastq.gz	Fastqsanger.gz
	SRR31045548_1.fastq.gz	Fastqsanger.gz
	SRR31045548_2.fastq.gz	Fastqsanger.gz
	SRR31045549_1.fastq.gz	Fastqsanger.gz

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The analysis of gene transcription and the effect of drug resistance of Radix Paeoniae Rubra Decoction on Staphylococcus aureus

Project description:To study the effect of Radix Paeoniae Rubra decoction on tolerance of Staphylococcus aureus.The effect of Radix Paeoniae Rubra on the resistance of Staphylococcus aureus to oxacillin sodium was studied by millipore dilution method in this experiment.At the same time ,conducted on transcriptome analysis of Staphylococcus aureus related genes in Radix Paeoniae Rubra.And to detect the expression level of related genes of Staphylococcus aureus under the action of Radix Paeoniae Rubra by PCR technology.The tolerance of Staphylococcus aureus was decreased obviously when the concentration of Radix Paeoniae Rubra decoction was above 1mg/ml.The effect of Radix Paeoniae Rubra decoction on the expression of tolerance genes femB,pvL and gluM when the concentration of Radix Paeoniae Rubra decoction was above 4mg/ml.When rhe concentration of Radix Paeoniae Rubra is more than 1mg/ml,it can effectively reduce the resistance of Staphylococcus aureus to oxacillin sodium.The reason may be due to the effect of Radix Paeoniae Rubra on the resistance gene of Staphylococcus aureus.

2021-01-30 | GSE165791 | GEO

Label-free quantitative proteomics reveals synergistic mechanism of a new erythromycin derivative and oxacillin against methcillin-resistant S. aureus

Project description:Methicillin-resistant Staphylococcus aureus (MRSA) remains a global health threat with an over 14% fatality rate, in case of invasive infection, in 2011. Multi-drug resistance is the main reason for the failure of therapy. Use of antimicrobial drug combinations with synergistic effect is increasingly seen as a critical strategy to combat multi-drug resistant pathogens such as MRSA. However, the mechanism of synergistic effect has yet been systematically studied. In this work, we investigated a new erythromycin derivative, SIPI-8294, which has been demonstrated to have synergistic effect with oxacillin against MRSA, unlike its parent compound erythromycin. To obtain insights into the mechanism for the synergistic effect, label-free quantitative proteomics was employed. Cultured MRSA was exposed to sub-inhibitory doses of oxacillin, SIPI-8294, erythromycin, and combinations of SIPI-8294/oxacillin and erythromycin/oxacillin to reveal the global proteome responses to drug treatment. Results showed that 200 proteins were differentially expressed in SIPI-8294/oxacillin-treated cells. Among these proteins, the expression levels of penicillin binding protein 2a and β-lactamase, two proteins mainly responsible for oxacillin resistance, were four times lower in the SIPI-8294/oxacillin treatment group than in the erythromycin/oxacillin treatment group. Quantitative real-time PCR analysis also revealed similar trends at the transcription level. These results suggest that the synergistic mechanism may be related to interference with the known oxacillin resistance mechanism. The data also provided some evidence that the combination of SIPI-8294 and oxacillin appears to impact oxidation-reduction homeostasis and cell wall biosynthesis.

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Proteomic alterations of methicillin-resistant Staphylococcus aureus and its Sle1 mutant upon oxacillin challenge

Project description:Proteomic profiles of methicillin-resistant Staphylococcus aureus and its Sle1 mutant grown with or without oxacillin

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Global transcriptional profiling of Staphylococcus aureus treated with berberine chloride

Project description:Staphylococcus aureus (S. aureus) is an important human and animal pathogen, multiply resistant strains are increasingly widespread, new agents are needed for the treatment of S. aureus. Berberine chloride (BBR), a natural plant product, has potent antimicrobial activity against S. aureus. We employed Affymetrix Staphylococcus aureus GeneChipsTM arrays to investigate the global transcriptional profiling of Staphylococcus aureus ATCC25923 treated with berberine chloride. Keywords: gene expression array-based, count

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