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Title: Comparative analysis of gene expression profiles between four kinds of blastomere at 8-cell stage embryos      
dateReleased:
06-19-2010
description:
The establishment of body axes and specification of early embryonic cells depend on maternally supplied transcripts and/or proteins, several of which are localized at specific regions of fertilized eggs and early embryos. The ascidian is known to exhibit a mosaic mode of development, and this mode is largely dependent on localized maternal factors. Using blastomere isolation, microarray and whole-mount in situ hybridization, the present study of Ciona intestinalis demonstrates that maternal transcripts of a total of 17 genes are localized at the posterior-most region of fertilized eggs and early embryos. Ten of them are newly identified in the present study, while the remaining seven genes have already been characterized in the previous studies. In addition, maternal transcripts of two genes, in addition to 14 genes encoded by the mitochondrial genome, showed a mitochondria-like distribution. Despite the present comprehensive approach, we could not identify maternal transcripts that are clearly localized to the animal-pole side, the vegetal-pole side, the anterior-side or other specific regions of the early embryo. Therefore, we concluded that the posterior-most localization and mitochondria-like distribution appear to be major specialized patterns of maternal transcripts in the early Ciona embryos. Four kinds of sample. Two series comparison (A4.1+a4.2+b4.2 blastomeres vs B4.1 blastomeres and Animal blastomeres vs Vegetal blastomeres) were examined including dye swap analyses.
privacy:
not applicable
aggregation:
instance of dataset
ID:
E-GEOD-15637
refinement:
raw
alternateIdentifiers:
15637
dateSubmitted:
04-09-2009
keywords:
functional genomics
dateModified:
05-01-2014
availability:
available
types:
gene expression
name:
Ciona intestinalis
ID:
A-GEOD-4556
name:
Custom Agilent Ciona intestinalis 22K Array
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-15637/E-GEOD-15637.raw.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-15637/E-GEOD-15637.processed.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE15637
storedIn:
Gene Expression Omnibus
qualifier:
not compressed
format:
HTML
accessType:
landing page
primary:
true
authentication:
none
authorization:
none
abbreviation:
EBI
homePage: http://www.ebi.ac.uk/
ID:
SCR:004727
name:
European Bioinformatics Institute
homePage: https://www.ebi.ac.uk/arrayexpress/
ID:
SCR:002964
name:
ArrayExpress
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