
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
HESX1 CRISPR Activation Plasmid (h) | sc-409466-ACT | 20 µg | $397.00 |
HESX1 (homeobox gene expressed in ES cells 1) encodes a paired-like homeobox transcriptional repressor that is essential for early anterior forebrain and pituitary primordium patterning. It functions within developmental transcriptional networks that integrate SHH, WNT, and BMP signaling to control cell fate specification, tissue boundary formation, and progenitor proliferation during embryogenesis. HESX1 regulates lineage programs in neuroectoderm and oral ectoderm, helping coordinate organogenesis and endocrine axis development. Dysregulated HESX1 activity is implicated in congenital hypopituitarism and midline brain malformations, supporting its use as a model gene for studying transcriptional control in human development and disease mechanisms.
HESX1 CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous HESX1 expression without altering the underlying DNA sequence.
HESX1 CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the HESX1 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 HESX1 transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous HESX1 expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native HESX1 locus and enabling the study of HESX1-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of HESX1 pathway restoration in tumor cells with silenced or reduced HESX1 expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.