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Marker gene discovery for Staphylococcus epidermidis infection in zebrafish embryos (RNA-Seq)

ABSTRACT: We use the zebrafish embryo model to study the innate immune response against Staphylococcus epidermidis. Therefore, we injected S. epidermidis into the yolk at 2 hpf and took samples at 5 days post injection.

ORGANISM(S): Danio rerio

PROVIDER: GSE42846 | GEO | 2013/04/01

SECONDARY ACCESSION(S): PRJNA183633

REPOSITORIES: GEO

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Marker gene discovery for Staphylococcus epidermidis infection in zebrafish embryos (RNA-Seq)

Project description:We use the zebrafish embryo model to study the innate immune response against Staphylococcus epidermidis. Therefore, we injected S. epidermidis into the yolk at 2 hpf and took samples at 5 days post injection. This deep sequence study was designed to determine the gene expression profile by Staphylococcus epidermidis infection. RNA was isolated from embryos at 5 days post injection. Wildtypes zebrafish embryos were micro-injected into the yolk (2hpf) with 20 CFU of S. epidermdis O-47 mCherry bacteria suspended in PVP (Polyvinylpyrrolidone), or Non-injected as a control. After injections embryos were transferred into fresh egg water and incubated at 28M-BM-0C. At 5 days post injection 100-200 embryos per group were snap-frozen in liquid nitrogen, and total RNA was isolated using TRIZOL reagent.

2013-04-01 | E-GEOD-42846 | biostudies-arrayexpress

Marker gene discovery for Staphylococcus epidermidis infection in zebrafish embryos (Agilent)

Project description:We use the zebrafish embryo model to study the innate immune response against Staphylococcus epidermidis. Therefore, we injected S. epidermidis (and three controls groups) into the yolk at 2 hpf and samples at mutiple timepoints. Gene expression profiles were obtained at 6, 30, 54, 78, 102 and 126 hpi by microarrays. The results show that the gram-positive bacterium S. epidermidis induces a late immune response with a strong response at 102 hpi. This microarray study was designed to determine the gene expression profile during infection with Staphylococcus epidermidis. RNA was isolated from groups of embryos (20) at 6 timepoints during the infection. Wildtypes zebrafish embryos were micro-injected into the yolk (2hpf) with (1) 20 CFU of S. epidermdis O-47 mCherry bacteria suspended in PVP (Polyvinylpyrrolidone), (2) mock-injected with PVP as a control, (3) Needle insertion as control, (4) Non-injected as a control. After injections embryos were transferred into fresh egg water and incubated at 28M-BM-0C. At 8 hpf (6 h post infection), 32 hpf (30 h post infection), 56 hpf (54 h post infection), 80 hpf (78 h post infection), 104 hpf (102 h post infection) or 128 hpf (126 h post infection) twenty embryos per treatment group were snap-frozen in liquid nitrogen, and total RNA was isolated using TRIZOL reagent. All treatment groups were analyzed using a common reference approach.

2013-04-01 | E-GEOD-37227 | biostudies-arrayexpress

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