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pubmed-article:15786495pubmed:abstractTextPlatelet endothelial cell adhesion molecule-1 (PECAM-1/CD31) is widely used as a marker during vasculogenesis and angiogenesis from embryonic stem (ES) cells. However, the expression of PECAM-1 isoforms in ES cells has not been determined. The present study was designed to determine the role of PECAM-1 isoforms during in vitro endothelial differentiation of ES cells. It was found that undifferentiated ES cells expressed high level of PECAM-1, which primarily located at cell-cell junction, but the expression of PECAM-1 was sharply down-regulated during early ES cell differentiation. In addition, undifferentiated ES cells were found the expressed all eight known alternatively spliced PECAM-1 isoforms, among them the expression of PECAM-1 isoforms lacking exon 15 or 14&15 was predominant. Quantitative analysis revealed a significant increase in the expression of PECAM-1 isoform lacking exon 12&14&15 as vascular development of ES cells. These results indicate a constitutive expression of PECAM-1 in undifferentiated murine ES cells and suggest a developmental role of PECAM-1 isoform changes during vasculogenesis and angiogenesis.lld:pubmed
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pubmed-article:15786495pubmed:authorpubmed-author:HanZhong...lld:pubmed
pubmed-article:15786495pubmed:authorpubmed-author:YangRen ChiRClld:pubmed
pubmed-article:15786495pubmed:authorpubmed-author:LiZong JinZJlld:pubmed
pubmed-article:15786495pubmed:authorpubmed-author:WangZack ZZZlld:pubmed
pubmed-article:15786495pubmed:authorpubmed-author:ZhengYi...lld:pubmed
pubmed-article:15786495pubmed:copyrightInfo(c) 2005 Wiley-Liss, Inc.lld:pubmed
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pubmed-article:15786495pubmed:pagination559-70lld:pubmed
pubmed-article:15786495pubmed:dateRevised2007-11-15lld:pubmed
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pubmed-article:15786495pubmed:year2005lld:pubmed
pubmed-article:15786495pubmed:articleTitleKinetic expression of platelet endothelial cell adhesion molecule-1 (PECAM-1/CD31) during embryonic stem cell differentiation.lld:pubmed
pubmed-article:15786495pubmed:affiliationState Key Laboratory of Experimental Hematology, National Research Center for Stem Cell Engineering and Technology, Institute of Hematology and Blood Disease Hospital, Tianjin 300020, PR China.lld:pubmed
pubmed-article:15786495pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:15786495pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
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