Unknown,Transcriptomics,Genomics,Proteomics

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Exploring signal-induced cellular regulatory subnetworks by use of partial least square regression (PLSR) multidimensional analysis of gene expression time series data


ABSTRACT: By use of time series microarray experiment we identified the characteristic temporal behaviour of ~2000 new gastrin-regulated genes (accession numbers: GSE32869). To inform gastrin regulatory networks with an additional experimental dimension, we determined the temporal transcriptome in the presence of the protein synthesis inhibitor cycloheximide (CHX). For those genes where the gastrin response in the presence of CHX was higher than the response with CHX alone the gene was classified as a primary gene not dependent on de novo protein synthesis for gastrin-induced expression.Gastrin induced genes that were not upregulated in the presence of CHX were classified as secondary genes, i.e., genes whose transcriptional activation dependends on de novo protein synthesis of one or several factors that must be induced by gastrin previous to these secondary genes.

ORGANISM(S): Rattus norvegicus

SUBMITTER: Arnar Flatberg 

PROVIDER: E-MTAB-1268 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

The duration of gastrin treatment affects global gene expression and molecular responses involved in ER stress and anti-apoptosis.

Selvik Linn-Karina M LK   Fjeldbo Christina S CS   Flatberg Arnar A   Steigedal Tonje S TS   Misund Kristine K   Anderssen Endre E   Doseth Berit B   Langaas Mette M   Tripathi Sushil S   Beisvag Vidar V   Lægreid Astrid A   Thommesen Liv L   Bruland Torunn T  

BMC genomics 20130628


<h4>Background</h4>How cells decipher the duration of an external signal into different transcriptional outcomes is poorly understood. The hormone gastrin can promote a variety of cellular responses including proliferation, differentiation, migration and anti-apoptosis. While gastrin in normal concentrations has important physiological functions in the gastrointestine, prolonged high levels of gastrin (hypergastrinemia) is related to pathophysiological processes.<h4>Results</h4>We have used geno  ...[more]

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