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Leptospira interrogans strain:SK1

ABSTRACT: Characterization of a Leptospira interrogans serovar Copenhageni strain isolated from a dog from Saint Kitts

PROVIDER: PRJNA600490 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR10996893_1.fastq.gz	Fastqsanger.gz
	SRR10996893_2.fastq.gz	Fastqsanger.gz
	SRR11091403_1.fastq.gz	Fastqsanger.gz

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Analysis of the human endothelial cell response to pathogenic Leptospira interrogans vs. non-pathogenic Leptospira biflexa (Eahy1 data)

2010-07-27 | GSE23172 | GEO

Analysis of the human endothelial cell response to pathogenic Leptospira interrogans vs. non-pathogenic Leptospira biflexa (HMEC data)

2010-07-27 | GSE23173 | GEO

Global transcriptomic response of Leptospira interrogans serovar Copenhageni upon exposure to serum

Project description:L. interrogans, a causative agent of leptospirosis, can survive in the environment for lengthy periods of time in between infection of mammalian hosts. In order to identify genes involved in survival in the early spirochetemic phase of infection, we performed a transcriptional analysis of L. interrogans serovar Copenhageni upon exposure to serum in comparison with EMJH medium. Analysis used RNA derived from serum- and EMJH-treated L. interrogans serovar Copenhageni as experimental and control samples, respectively. The samples were composed of 3 biological replicates with dye swap for each replicate, resulting in 6 arrays. Direct comparisons were made between arrays of experimental and control samples using raw data pulled from two different channels for data analysis.

2010-06-05 | E-GEOD-17942 | biostudies-arrayexpress

Global transcriptomic response of Leptospira interrogans serovar Copenhageni upon exposure to serum

2010-03-31 | GSE17942 | GEO

Analysis of the human endothelial cell response to pathogenic Leptospira interrogans vs. non-pathogenic Leptospira biflexa (HMEC data)

Project description:The overall goal of these experiments was to determine how human endothelial cells respond to pathogenic Leptospira interrogans. Leptospira interrogans causes leptospirosis, the most widespread zoonotic infection in the world. A hallmark of leptospirosis is widespread endothelial damage, which in severe cases leads to hemorrhage. In these experiments, we infected two endothelial cell lines with pathogenic Leptospira interrogans serovar Canicola strain Ca12-005, and as controls, with the non-pathogenic Leptospira biflexa serovar Patoc strain Pfra. As additional controls, uninfected cells were also included in the analyses. The cell line used fhere was a microvascular endothelial line, HMEC (Ades et al, 1992. HMEC-1: establishment of an immortalized human microvascular endothelial cell line. J Invest Dermatol. 99:683-690); due to loss of the original analysis files, only raw data files are provided. Infection times were performed at a multiplicity of infection (# bacteria/endothelial cell) of 10 for either 1 hour or 3 hours, after which RNA was harvested and reverse transcribed. Labeled cDNAs were used to probe HEEBO arrays purchased from Microarrays Inc. (Nashville, TN). In each of three biological replicate experiments, for each time point, three comparisons were made. First, the L. interrogans-infected cells were compared to the L. biflexa-infected cells. Second, the L. Interrogans-infected cells were compared to the uninfected cells. Third, the L. biflexa-infected cells were compared to the uninfected cells. A second endothelial cell line,

2010-07-27 | E-GEOD-23173 | biostudies-arrayexpress

Analysis of the human endothelial cell response to pathogenic Leptospira interrogans vs. non-pathogenic Leptospira biflexa (Eahy1 data)

Project description:The overall goal of these experiments was to determine how human endothelial cells respond to pathogenic Leptospira interrogans. Leptospira interrogans causes leptospirosis, the most widespread zoonotic infection in the world. A hallmark of leptospirosis is widespread endothelial damage, which in severe cases leads to hemorrhage. In these experiments, we infected two endothelial cell lines with pathogenic Leptospira interrogans serovar Canicola strain Ca12-005, and as controls, with the non-pathogenic Leptospira biflexa serovar Patoc strain Pfra. As additional controls, uninfected cells were also included in the analyses. The cell line used was Ea.hy926, a macrovascular line (Edgell, C. J.,et al. 1990. In vitro Cell. & Dev. Biol. 26:1167-1172, and Edgell, C. J., et al. 1983. Proc. Natl. Acad. Sci. 80:3734-3737). Infection times were performed at a multiplicity of infection (# bacteria/endothelial cell) of 10 for either 1 hour or 3 hours, after which RNA was harvested and reverse transcribed. Labeled cDNAs were used to probe HEEBO arrays purchased from Microarrays Inc. (Nashville, TN). In each of three biological replicate experiments, for each time point, three comparisons were made. First, the L. interrogans-infected cells were compared to the L. biflexa-infected cells. Second, the L. Interrogans-infected cells were compared to the uninfected cells. Third, the L. biflexa-infected cells were compared to the uninfected cells. A second endothelial cell line, HMEC (Ades et al, 1992. HMEC-1: establishment of an immortalized human microvascular endothelial cell line. J Invest Dermatol. 99:683-690), which is of microvascular origin, was also used; raw data files are provided separately.

2010-07-27 | E-GEOD-23172 | biostudies-arrayexpress

Leptospira interrogans

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Transcriptional response of Leptospira interrogans to iron limitation and characterization of putative Fur-like protein

Project description:Leptospirosis is a globally significant zoonotic disease caused by Leptospira spp. Iron is essential for growth of most bacterial species. Since availability of iron is low in the host, pathogens have evolved complex iron acquisition mechanisms to survive and establish infection. Virulence genes in some bacteria have been shown to be iron-regulated. In many bacteria, expression of iron-uptake and storage proteins is regulated by Fur. L. interrogans encodes four predicted Fur homologs; we have constructed a mutant in one of these, la1857. We conducted microarray analysis to identify differentially expressed genes in L. interrogans serovar Manilae grown under low iron compared with normal iron conditions found in EMJH medium. We also compared the transcriptional profile of the la1857 mutant versus wild-type Manilae under normal and low iron conditions.

2010-03-22 | GSE20422 | GEO

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