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Construction of a cDNA microarray derived from the ascidian Ciona intestinalis
Kaoru Azumi1, Hiroki Takahashi, Yasufumi Miki
1Department of Biochemistry, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan. kaoru@pharm.hokudai.ac.jp
Zoological Science
|October 22, 2003
Summary
Researchers developed a new cDNA microarray for the basal chordate Ciona intestinalis, analyzing gene expression differences between eggs and larvae. This tool aids in understanding gene networks during early development in chordates.
Area of Science:
- Molecular Biology
- Developmental Biology
- Genomics
Background:
- The ascidian Ciona intestinalis is a basal chordate model organism.
- Its genome contains approximately 16,000 protein-coding genes.
- A collection of 13,464 Ciona intestinalis cDNAs (Gene Collection Release I) has been previously characterized.
Purpose of the Study:
- To construct a comprehensive cDNA microarray representing 13,464 Ciona intestinalis genes.
- To analyze global gene expression patterns during early development.
- To establish a tool for investigating gene networks in basal chordates.
Main Methods:
- Construction of a cDNA microarray using 13,464 Ciona intestinalis gene cDNAs.
- Hybridization experiments using Cy3- and Cy5-labeled probes.
- Comparison of microarray data with previous expressed sequence tag (EST) analyses.
Main Results:
- The microarray successfully detected extensive differential gene expression between fertilized eggs and larvae.
- Microarray results showed good correlation with previous EST analyses.
- This represents the first microarray for a large collection of Ciona intestinalis cDNAs.
Conclusions:
- The developed cDNA microarray is a valuable tool for studying global gene expression in Ciona intestinalis.
- This resource will facilitate research into gene expression and networks during basal chordate embryogenesis.
- The findings support the utility of microarrays for large-scale transcriptomic analysis in non-model organisms.