
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
FGF-21 CRISPR Activation Plasmid (h) | sc-401193-ACT | 20 µg | $397.00 | |||
FGF-21 CRISPR Activation Plasmid (h2) | sc-401193-ACT-2 | 20 µg | $397.00 |
Human FGF21 encodes fibroblast growth factor 21 (FGF-21), an endocrine-like member of the FGF family that regulates systemic energy balance and nutrient stress responses. FGF-21 signaling integrates hepatocyte, adipocyte, and muscle metabolic programs, influencing glucose and lipid homeostasis through FGFR-mediated pathways that require the co-receptor β-Klotho, with downstream modulation of MAPK/ERK and related transcriptional networks. It is strongly induced by fasting, ketogenic states, and cellular stress, coordinating adaptive responses such as fatty acid oxidation, ketogenesis, and insulin sensitivity. Dysregulated FGF21 expression has been associated with metabolic disorders including obesity, type 2 diabetes, nonalcoholic fatty liver disease, and broader cardiometabolic risk phenotypes, making it a useful node for pathway interrogation.
FGF-21 CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous FGF21 expression without altering the underlying DNA sequence.
FGF-21 CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the FGF21 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 FGF21 transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous FGF-21 expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native FGF21 locus and enabling the study of FGF-21-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of FGF-21 pathway restoration in tumor cells with silenced or reduced FGF21 expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.