
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
PDX-1 CRISPR Activation Plasmid (h) | sc-400792-ACT | 20 µg | $397.00 | |||
PDX-1 CRISPR Activation Plasmid (h2) | sc-400792-ACT-2 | 20 µg | $397.00 |
PDX1 encodes PDX-1, a homeobox transcription factor that orchestrates pancreatic development and sustains mature β-cell identity by regulating insulin gene transcription and endocrine differentiation programs. In human cells, PDX-1 integrates nutrient-responsive and growth-factor signaling with transcriptional networks controlling glucose sensing, secretory capacity, and cellular stress responses. Dysregulated PDX-1 activity is associated with impaired β-cell function and altered pancreatic lineage specification, making it relevant to studies of diabetes-related mechanisms and pancreatic developmental biology. As a master regulator, PDX-1 is frequently used to probe transcriptional circuitry governing endocrine fate decisions and metabolic homeostasis.
PDX-1 CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous PDX1 expression without altering the underlying DNA sequence.
PDX-1 CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the PDX1 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 PDX1 transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous PDX-1 expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native PDX1 locus and enabling the study of PDX-1-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of PDX-1 pathway restoration in tumor cells with silenced or reduced PDX1 expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.