title: Microarray analysis of PDGFR alpha+ populations in ES cell differentiation culture identifies genes involved in differentiation of mesoderm and mesenchyme including ARID3b that is essential for development of embryonic mesenchymal cells.
abstract: An inherent difficulty in using DNA microarray technology on the early mouse embryo is its relatively small size. In this study, we investigated whether use of ES cell differentiation culture, which has no theoretical limit in the number of cells that can be generated, can improve this situation. Seven distinct ES-cell-derived populations were analyzed by DNA microarray and examined for genes whose distribution patterns are similar to those of PDGFRalpha, a gene implicated in differentiation of mesoderm/mesenchymal lineages. Using software developed in our laboratory, we formed a group of 30 genes which showed the highest similarity to PDGFRalpha, 18 of these genes were shown to be involved in development of either mesodermal, mesenchymal or neural crest cells. This list also contains several genes whose role in embryogenesis has not yet been fully identified. One such molecule is mARID3b. The mARID3b expression is found in the paraxial mesoderm and cranial mesenchyme. mARID3b-null mouse showed early embryonic lethality, and most phenotypes of this mutant appear to develop from a failure to generate a sufficient number of cranial mesenchymal cells. These results demonstrate the potential use of ES cell differentiation culture in identifying novel genes playing an indispensable role in embryogenesis.
authors.affiliation: Laboratory for Stem Cell Biology, RIKEN Center for Development Biology, 2-2-3 Minatojima-minamimachi, Kobe, Hyogo 650-0047, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Takebe
authors.forename: Takumi
authors.initials: T
authors.lastname: Era
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Okada
authors.forename: Lars
authors.initials: L
authors.lastname: Martin Jakt
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Kuroda
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Nishikawa
mesh_terms: D000818:Animals; D002454:Cell Differentiation / Q000235:genetics*; D002478:Cells, Cultured; D004268:DNA-Binding Proteins / Q000096:biosynthesis / Q000235:genetics*; D020869:Gene Expression Profiling; D006133:Growth Substances / Q000235:genetics* / Q000502:physiology; D006257:Head / Q000196:embryology; D008648:Mesoderm / Q000166:cytology* / Q000378:metabolism; D051379:Mice; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D020411:Oligonucleotide Array Sequence Analysis; D020796:Receptor, Platelet-Derived Growth Factor alpha / Q000096:biosynthesis / Q000235:genetics*; D013234:Stem Cells / Q000166:cytology* / Q000378:metabolism
chemical_list: C510769:Arid3b protein, mouse; D004268:DNA-Binding Proteins; D006133:Growth Substances; D020796:Receptor, Platelet-Derived Growth Factor alpha