
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
ESM-1 CRISPR Activation Plasmid (h) | sc-403120-ACT | 20 µg | $397.00 |
ESM1 encodes endothelial cell-specific molecule 1 (ESM-1/endocan), a secreted dermatan sulfate proteoglycan predominantly expressed by vascular endothelium and induced by inflammatory cytokines. ESM-1 modulates endothelial activation by influencing leukocyte–endothelial interactions, vascular permeability, and extracellular matrix–associated signaling, intersecting with angiogenic and inflammatory pathways. It has been linked to tumor-associated angiogenesis and inflammatory vascular remodeling, and its expression correlates with endothelial dysfunction in multiple disease contexts. These features make ESM1 a useful molecular handle for studying endothelial biology, microenvironmental crosstalk, and biomarkers of vascular activation in human cell systems.
ESM-1 CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous ESM1 expression without altering the underlying DNA sequence.
ESM-1 CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the ESM1 locus in human cell lines. The system is built around a catalytically inactive Cas9 (dCas9) carrying two inactivating mutations (D10A and N863A) that eliminate nuclease activity while preserving DNA binding. This dCas9 is fused to VP64, a potent transcriptional activator, and is co-expressed with a blasticidin resistance gene for selection. The second plasmid encodes the MS2-p65-HSF1 fusion protein, a secondary activator complex that works in concert with dCas9-VP64, alongside a hygromycin resistance gene. The third plasmid encodes a target-specific 20 nt sgRNA fused to two MS2 RNA aptamers that recruit the MS2-p65-HSF1 complex to the activation site, accompanied by a puromycin resistance gene. The three plasmids are delivered at a 1:1:1 mass ratio for balanced expression of all system components.
Once assembled at the target locus, the SAM complex binds within approximately 200 bp upstream of the ESM1 transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous ESM-1 expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native ESM1 locus and enabling the study of ESM-1-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of ESM-1 pathway restoration in tumor cells with silenced or reduced ESM1 expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.