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How Can I Use Geo To Understand The Regulation Of My Gene?

Hi all,

I have what I thought was a relatively simple question, but I haven't been able to find a simple solution..

We have a gene which is relatively unknown and we would like to understand in which conditions/diseases it is differentially regulated using unbiased mining of GEO. We have done this manually for a number of datasets and come up with some very novel suggestions for processes in which our gene may be involved, but are keen to take a more systematic and efficient approach (with our limited R experience).

We were initially planning on downloading the GEO profile for gene x, extracting the values, running a t-test, then

Is there an existing package that does this, or is there a simple way to approach this (our attempts so far have been unsuccessful!)?

LM.

geo gene microarray analysis
• 2,841 views • link
updated by Sean Davis Sean Davis • written by Labmonkey • Labmonkey

3 answers

Have you looked at Gene Expression Atlas maintained by EBI for your gene of interest ?

Atlas provide pre-computed information including Organism part where the gene is differentially under/over expressed, Cell line, Cell type, Disease state, Compound treatment etc.

For example:

Here is an example page for one of my favorite human gene RGS6.

Specific to your question disease states associated with this gene is available here.

Also adding a figure to depict published studies where the gene is over (red)/under (blue) expressed compared to the gene's overall mean expression level in the study.

alt text

• 0 views • link
written by Khader Shameer Khader Shameer

Bioconductor has a GEOquery package that may be of use to you. http://bioconductor.org/packages/release/bioc/html/GEOquery.html

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updated by Sean Davis Sean Davis • written by Damian Kao Damian Kao

This is another interesting approach:

http://rafalab.jhsph.edu/barcode/

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written by Sean Davis Sean Davis

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