Enrichment of Genes in the Aortic Intima That Are Associated With Stratified Epithelium Implications of Underlying Biomechanical and Barrier Properties of the Arterial Intima
2005
Background— Arteries and veins are exposed to different pressures and are easily distinguished by morphology. Although several recent studies have focused on differential gene expression between the arterial and venous endothelium, the molecular distinctions that give rise to the dramatic structural distinctions between arteries and veins, such as in the organization of the intima, are not known. Methods and Results— We used high-density oligonucleotide arrays to analyze the transcriptional profile of the mouse aorta and inferior vena cava (IVC), not restricting our analysis to the endothelium, to identify genes whose expression was enriched in aorta over other tissues and the IVC. By quantitative reverse transcription–polymerase chain reaction analysis, these genes have been shown to be highly expressed in the mouse aorta and were either expressed at low levels or were undetectable in the murine IVC. By immunofluorescence analysis of human tissue, we determined that a subset of these aorta-enriched prote...
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