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Gene expression profiling of SHSY5Y cells exposed to manganese

ABSTRACT: The trace element manganese is essential for normal development for all the organisms. Overexposure of manganese may leads to multiple neuronal disorders such as Parkinson, manganism. To explore the molecular mechanism of manganese induced neurotoxicity, gene expression profiling was performed on human neuroblastoma SHSY-5Y cells. Cells were exposed to sub-lethal concentration of manganese (100 μM) for 24 hrs. Our result demonstrates that manganese alter multiple biological pathways including chromatin assembly, neurogenesis and apoptotic pathways.Cells grown in 75mm2 flask. three replicates for each sample

ORGANISM(S): Homo sapiens

PROVIDER: GSE70845 | GEO | 2016/07/01

SECONDARY ACCESSION(S): PRJNA289673

REPOSITORIES: GEO

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Gene expression profiling of SHSY5Y cells exposed to manganese

Project description:The trace element manganese is essential for normal development for all the organisms. Overexposure of manganese may leads to multiple neuronal disorders such as Parkinson, manganism. To explore the molecular mechanism of manganese induced neurotoxicity, gene expression profiling was performed on human neuroblastoma SHSY-5Y cells. Cells were exposed to sub-lethal concentration of manganese (100 Î¼M) for 24 hrs. Our result demonstrates that manganese alter multiple biological pathways including chromatin assembly, neurogenesis and apoptotic pathways.Cells grown in 75mm2 flask. three replicates for each sample SHSY5Y cells grown in MEM:F12 media (1:1) were treated with manganese and total RNA was isolated from cells after 24 hour exposure Three replicate were used for the experiment

2016-07-01 | E-GEOD-70845 | biostudies-arrayexpress

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Expanding the Pathways of Manganese Homeostasis: Role of a Small Manganese Chaperone Protein, MntS

Project description:Escherichia coli possesses >65 small proteins of <50 amino acids, many of which are uncharacterized. We have identified a new small protein, MntS, involved in manganese homeostasis. Manganese is a critical micronutrient, serving as an enzyme cofactor and protecting against oxidative stress. Yet manganese is toxic in excess and little is known about its function in cells. Bacteria carefully control intracellular manganese levels using the transcription regulator MntR. Before this work, mntH, which encodes a manganese importer, was the only gene known to respond to manganese via MntR repression in E. coli K12. We demonstrated that mntS is another member of the MntR manganese regulon. We also identified yebN, which encodes a putative manganese efflux pump, as the first gene positively regulated by MntR in Enterobacteria. Since MntS is expressed when manganese levels are low, causes manganese sensitivity when overexpressed, and binds manganese, we propose that MntS may be a manganese chaperone. This study reveals new factors involved in manganese regulation and metabolism and expands our knowledge of how small proteins function. Two E. coli strains, MG1655 (wild type) and GSO458 (Delta-mntR) were grown to OD600 ~ 0.5 in M9 glucose media at 37 M-BM-:C and treated with 10 microM MnCl2. In the first experiment, this incubation with 10 microM MnCl2 was for 60 min and in the second experiment, it was for 10 min. RNA was extracted using the hot phenol method and cDNA prepared and hybridized according the manufacturer's instructions (Affymetrix).

2011-12-08 | E-GEOD-25318 | biostudies-arrayexpress

Expanding the Pathways of Manganese Homeostasis: Role of a Small Manganese Chaperone Protein, MntS

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The expression profiles of 82 novel and 245 known human imsRNAs

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2010-12-21 | GSE26196 | GEO

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Project description:Transcriptional profiling of SirR and manganese regulated expression of genes in Mycobacterium tuberculosis strains comparing high manganese vs. low manganese in Rv (wild type Mycobacterium tuberculosis) and ST70 (mntR mutant strain of Mycobacterium tuberculosis) Two strains each with two conditions experiment, Rv (Mycobacterium tuberculosis wild type strain) high manganese vs. low manganese and ST70 (mntR mutant strain of Mycobacterium tuberculosis) high manganese vs. low manganese. Number of biological replicates is 3 for each condition for each strain.

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