Ontology highlight
ABSTRACT:
PROVIDER: PRJNA507699 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR8268806_1.fastq.gz | Fastqsanger.gz | |||
| SRR8268806_2.fastq.gz | Fastqsanger.gz | |||
| SRR8268807_1.fastq.gz | Fastqsanger.gz | |||
| SRR8268807_2.fastq.gz | Fastqsanger.gz | |||
| SRR8268808_1.fastq.gz | Fastqsanger.gz |
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Project description:The microarrays experiments was performed with the purpose of identify transcriptional networks activated by copper. This experiment correspond the work tituled Enterococcus faecalis reconfigure the activation of its transcriptional regulatory networks under different copper exposure levels (work in preparation).Mauricio Latorrea,b, Jessica Galloway-Peñac,d,e, Jung Hyeo Rhoc,d, Marko Budinichf, Barbara E. Murrayc,d,e, Alejandro Maassb,f, Mauricio Gonzáleza,b,f*. a INTA, Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, Santiago, Chile. b Center for Genome Regulation (Fondap 15090007), University of Chile, Santiago, Chile. c Division of Infectious Disease, Department of Medicine, University of Texas Medical School, Houston, Texas, United States of America. d Center for the Study of Emerging and Reemerging Pathogens, University of Texas Medical School, Houston, Texas, United States of America. e Department of Microbiology and Molecular Genetics, University of Texas Medical School, Houston, Texas, United States of America f Mathomics, Center for Mathematical Modeling (UMI2807CNRS), Santiago, Chile. * Corresponding author. Address: El Líbano 5524, Santiago 11, Chile. Fax: +56 (2) 2214030.
2013-11-12 | GSE45131 | GEO
Project description:The microarrays experiments was performed with the purpose of identify transcriptional networks activated by copper. This experiment correspond the work tituled Enterococcus faecalis reconfigure the activation of its transcriptional regulatory networks under different copper exposure levels (work in preparation).Mauricio Latorrea,b, Jessica Galloway-PeM-CM-1ac,d,e, Jung Hyeo Rhoc,d, Marko Budinichf, Barbara E. Murrayc,d,e, Alejandro Maassb,f, Mauricio GonzM-CM-!leza,b,f*. a INTA, Laboratorio de BioinformM-CM-!tica y ExpresiM-CM-3n GM-CM-)nica, INTA, Universidad de Chile, Santiago, Chile. b Center for Genome Regulation (Fondap 15090007), University of Chile, Santiago, Chile. c Division of Infectious Disease, Department of Medicine, University of Texas Medical School, Houston, Texas, United States of America. d Center for the Study of Emerging and Reemerging Pathogens, University of Texas Medical School, Houston, Texas, United States of America. e Department of Microbiology and Molecular Genetics, University of Texas Medical School, Houston, Texas, United States of America f Mathomics, Center for Mathematical Modeling (UMI2807CNRS), Santiago, Chile. * Corresponding author. Address: El LM-CM--bano 5524, Santiago 11, Chile. Fax: +56 (2) 2214030. A eight chip study (two technical replicates) using total RNA recovered from four separate cultures of: Enterococcus faecalis OG1RF (N medium growth), Enterococcus faecalis OG1RF copM-NM-^T mutant strain (N medium growth), Enterococcus faecalis OG1RF copM-NM-^T mutant low copper treatment (N medium growth + 0.05 mM CuSO4) and Enterococcus faecalis OG1RF copM-NM-^T mutant low copper treatment (N medium growth + 0.5 mM CuSO4). Each chip measures the expression level of 3,114 genome genes from Enterococcus faecalis strain V583 (A7980-00-01).
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Project description:In the Central Andean region in South America, high-altitude ecosystems (3500-6000 masl) are distributed across Argentina, Chile, Bolivia and Peru, in which poly-extremophilic microbes thrive under extreme environmental conditions. In particular, in the Puna region, total solar irradiation and UV incidence are the highest on Earth, thus, restraining the physiology of individual microorganisms and the composition of microbial communities.
UV-resistance of microbial strains thriving in High-Altitude Andean Lakes was demonstrated and their mechanisms were partially characterized by genomic analysis, biochemical and physiological assays. Then, the existence of a network of physiological and molecular mechanisms triggered by ultraviolet light exposure was hypothesized and called "UV-resistome". It includes some or all of the following subsystems: (i) UV sensing and effective response regulators, (ii) UV-avoidance and shielding strategies, (iii) damage tolerance and oxidative stress response, (iv) energy management and metabolic resetting, and (v) DNA damage repair. Genes involved in the described UV-resistome were recently described in the genome of Nesterenkonia sp. Act20, an actinobacterium which showed survival to high UV-B doses as well as efficient photorepairing capability.
The aim of this work was to use a proteomic approach together with photoproduct measurements to help dissecting the molecular events involved in the adaptive response of a model High-Altitude Andean Lakes (HAAL) extremophilic actinobacterium, Nesterenkonia sp. Act20, under artificial UV-B radiation. Our results demonstrate that UV-B exposure induced over-abundance of a well-defined set of proteins while recovery treatments restored the proteomic profiles present before the UV-challenge. The proteins involved in this complex molecular network were categorized within the UV-resistome subsystems: damage tolerance and oxidative stress response, energy management and metabolic resetting, and DNA damage repair.
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Project description:Understanding molecular mechanism associated with high altitude exposure during acclimatization/adaptation/maladaptation. Data reveals specific components of the complex molecular circuitry underlying high altitude pulmonary edema. Individualized outcome prediction were constructed through expression profiling of 39400 genes in sea level sojourners who were acclimatized to high altitude and grouped as controls (n=14), high altitude natives (n=14) and individuals who developed high altitude pulmonary edema within 48-72 hours after air induction to high altitude (n=17).
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