Happy New Year, BASErs!

We are developing metagenomic assays using Affy chips with
custom-designed probe sets. The tools available for analyzing standard
Affy gene expression data using pm-mm comparisons, however, are not
relevant to our chip design and analytical approach (we're only using pm
probes).   

Accordingly, we would like to adapt the BASE affymetrix.jar plugin to
use other executables in the Affymetrix Power Tools suite besides just
the apt-probeset-summarize.  Specifically, we would like to use
apt-cel-extract within affymetrix.jar to simply extract feature
intensities, probe IDs, probe set IDs, and XY coordinates from CEL files
into new root bioassay sets.  I have already used apt-cel-extract on the
command line to successfully extract these fields from CEL files into
text files.

For now, simply trying to feed our CEL files into the current Affy PLIER
plugin within BASE 2.5.0 gives (not surprisingly) the following error:

java.io.IOException: Unexpected exit of PLIER sub-process. Return value:
1
at se.lu.thep.affymetrix.Plier.runBinary(Plier.java:157)
at
se.lu.thep.affymetrix.AbstractExternalBinaryPlugin.run(AbstractExternalB
inaryPlugin.java:262)
at
net.sf.basedb.core.PluginExecutionRequest.invoke(PluginExecutionRequest.
java:89)
at
net.sf.basedb.core.InternalJobQueue$JobRunner.run(InternalJobQueue.java:
435)
at java.lang.Thread.run(Thread.java:619)

Are any of you interested in working with us to expand affymetrix.jar to
include functionalities from apt-cel-extract and perhaps others in the
the Affy Power Tools suite?  If not, can you give us some suggestions on
how we might best get started on this, and what kinds of challenges or
incompatibilities that we might face?

Thanks, and Congratulations on BASE 2.5.0 - it's been working
exceedingly well for us! 

Jim Collett

James R. Collett, Ph.D.
Systems Biology Fellow
Chemical and Biological Process Development Group
Pacific Northwest National Laboratory

 

 





 

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