
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
cubilin CRISPR Activation Plasmid (h) | sc-402129-ACT | 20 µg | $397.00 |
Human CUBN encodes cubilin, a large multiligand endocytic receptor expressed prominently in renal proximal tubule and intestinal epithelia. Cubilin cooperates with megalin (LRP2) and the adaptor amnionless (AMN) to mediate receptor-driven uptake and lysosomal trafficking of protein-bound nutrients, including intrinsic factor–vitamin B12 complexes and filtered plasma proteins such as albumin. Through these endocytic pathways, cubilin helps maintain nutrient homeostasis and regulates tubular protein reabsorption, linking its function to epithelial transport and vesicle-mediated internalization networks. Disruption or dysregulation of CUBN is associated with impaired vitamin B12 uptake and renal tubular protein handling phenotypes, making it relevant for mechanistic studies in kidney and gastrointestinal disease biology.
cubilin CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous CUBN expression without altering the underlying DNA sequence.
cubilin CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the CUBN 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 CUBN transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous cubilin expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native CUBN locus and enabling the study of cubilin-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of cubilin pathway restoration in tumor cells with silenced or reduced CUBN expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.