
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
SARP3 CRISPR Activation Plasmid (h) | sc-402848-ACT | 20 µg | $397.00 | |||
SARP3 CRISPR Activation Plasmid (h2) | sc-402848-ACT-2 | 20 µg | $397.00 |
Human SFRP5 encodes secreted frizzled-related protein 5 (SARP3), a soluble modulator of Wnt signaling that binds Wnt ligands and can influence Frizzled receptor activation. By shaping canonical β-catenin–dependent transcription and non-canonical Wnt/PCP outputs, SARP3 helps regulate cell fate decisions, proliferation, and tissue homeostasis. Altered SFRP5 expression has been associated with dysregulated Wnt pathway activity observed across metabolic and inflammatory contexts and in cancer-related signaling networks, making it a useful node for pathway perturbation studies. As an extracellular Wnt regulator, SARP3 is often examined for its effects on stromal–epithelial communication and signal attenuation in microenvironment-focused models.
SARP3 CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous SFRP5 expression without altering the underlying DNA sequence.
SARP3 CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the SFRP5 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 SFRP5 transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous SARP3 expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native SFRP5 locus and enabling the study of SARP3-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of SARP3 pathway restoration in tumor cells with silenced or reduced SFRP5 expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.