Unknown,Transcriptomics,Genomics,Proteomics

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Genome-wide expression profiling of 30 uM curcumin treatment of immortalized prostate fibroblasts (PShTert-AR)

ABSTRACT: Identifying the effect of the natural agent curcumin on global transcriptional activity of PShTert-AR prostate fibroblast cells over time with a view to understanding mechanisms of action over time. Treatment of PShTert-AR cells for 4, 8, 12 and 16 hours in PShTert-AR cells significantly altered the expression of approximately 1200 genes. Through non-hierarchical cluster analysis, these genes were classified into 3 distinct groups depending on their pattern of temporal response. PShTert-AR cells were treated with vehicle control (16 hours DMSO) or 30 uM curcumin (4, 8, 12 or 16 hours). Total RNA was extracted. Triplicate RNA samples were pooled and hybrydised to Affymetrix Human Gene 1.0 ST array chips.

ORGANISM(S): Homo sapiens

SUBMITTER: Lauren Giorgio

PROVIDER: E-GEOD-50618 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Gene expression analysis study in curcumin treated (20ÂµM curcumin treated Y79 cells ) and control Y79 cells (Suspension Y79 cells). Source were Y79 retinoblastoma cell line from human. Organism used: Homo sapiens ï Slides: Gene Expression Whole Human Genome 4x44k ï Starting material: Cells in RNA later ï RNA Samples used: :Control Y79 and Treated_Curcumin ï Labeling kit: Agilents Low input RNA linear amplification Kit one color Labeling Method: T7 promoter based-linear amplification to generate labeled complementary RNA ï Total RNA and cRNA Purification Kit: Qiagenâs RNeasy minikit ï Hybridization Kit: Agilentâs In situ Hybridzation kit Hybridization protocol The fragmented cRNA were mixed with 25ul of 2x GE Hybridization Buffer (Agilent). About 45ul of the resulting mixture was applied to the Microarray and hybridized at 65degC for 17 hours in an Agilent Microarray Hybridization Chamber (SureHyb: G2534A) with Hybridization Oven. After hybridization, slides were washed with Agilent Gene expression Wash Buffer I for 1 minute at room temperature followed by a 1 min wash with Agilent Gene expression Wash Buffer II for 37C. Slides were finally rinsed with Acetonitrile for cleaning up and drying. Scan protocol Laser detection of Cyanine 3 and Cyanine 5 fluorescence is performed using a confocal scanning instrument containing two tuned lasers, which excite Cyanine dyes at the appropriate wavelengths. Description Microarrays were scanned on an Agilent scanner (G2565AA) at 100% laser power, 30% PMT.Data extraction was carried out with Agilent Feature Extraction software (version 9.1), and normalization was done using linear per array algorithm according to the manufacturerâs protocol. Data processing Feature extracted data was analyzed using GeneSpring GX v 7.3.1 software from Agilent. Normalization of the data was done in GeneSpring GX using the recommended one color Per Chip and Per Gene Data Transformation: Set measurements less than 0.01 to 0.01, Per Chip: Normalize to 50th percentile, Per Gene: Normalize to Specific Samples. Further quality control of normalized data was done using correlation based condition tree to eliminate bad experiments. Differentially regulated Genes were filtered with cutoff of > 1.5 for Up regulation and < 0.55 for Down Regulation were obtained. Differentially regulated genes were clustered using gene tree to identify significant gene expression patterns.

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Genome-wide expression profiling of 30 uM curcumin treatment of immortalized prostate fibroblasts (PShTert-AR)

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