Our analysis uncovered significant APA in worm tissues, but we could not identify upstream tissue-specific elements involved in 3'end formation, suggesting that in worms, other accessory tissue-specific factors [ 68] or their dosage [ 19] may play a role instead [ 5, 6].
Farré and colleagues suggest that greater conservation upstream of tissue-specific and tissue-restricted genes may reflect a complex regulatory network.
The study showed that putative Scaffold/Matrix Attachment Regions (S/MAR) are more abundant upstream of tissue specific genes as compared to housekeeping genes.
Thrombin is activated upstream by tissue factor (TF) which is exposed on the surface of endothelial cells after injury, but is also often overexpressed on the surface of cancer cells [ 29].
The upstream neuronal tissue-specific cluster (Exon 1) is associated with a CpG island and is bound by Dali.
However, our latest work shows that the placement of the A2UCOE upstream of tissue-specific promoter/enhancer combinations does not interfere with the specificity of these elements (Talbot, Waddington, M.A., Santilli, A.J.T., unpublished results).
COX-2 is an isoform of the prostaglandin endoperoxidase synthetase that catalyzes key steps in the metabolism of arachidonic acid to prostaglandin E2 (PGE2), thereby regulating the synthesis of aromatase [ 35- 37]: Expression of aromatase is controlled by unique promoters that lie upstream of tissue-specific exons.
Any subset of genes with a putative common feature (e.g., common function, sequence motif, or binding site) can be contrasted to the remaining genome in a similar way to detect tissue-specific or taxon-specific effect of an upstream regulation among tissues within an organism, or between homologous tissues in a phylogenetic context.
For in vivo therapy, the particles are injected into the vascular system upstream from malignant tissue, and captured at the tumor using an applied magnetic field.
More unexpected is the presence of motifs with positional bias much further upstream, in several tissue-restricted datasets.
The human growth hormone locus relies on a locus control region 15 32 kilobases upstream to drive tissue-specific expression [ 26, 27].
