
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
RAG-1 CRISPR Activation Plasmid (h) | sc-401821-ACT | 20 µg | $397.00 |
RAG1 encodes RAG-1, a lymphoid-specific endonuclease essential for initiating V(D)J recombination during B- and T-cell development by introducing site-specific DNA double-strand breaks at recombination signal sequences. This activity couples antigen receptor diversification to DNA damage response and repair pathways, particularly non-homologous end joining, to ensure productive assembly of immunoglobulin and T-cell receptor loci. Dysregulated or impaired RAG-1 function is associated with defective lymphocyte maturation and genomic instability, linking RAG1 biology to primary immunodeficiency phenotypes and aberrant chromosomal rearrangements. As a gatekeeper of adaptive immune repertoire formation, RAG-1 is widely studied in mechanisms of programmed DNA cleavage, chromatin accessibility, and immune cell differentiation.
RAG-1 CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous RAG1 expression without altering the underlying DNA sequence.
RAG-1 CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the RAG1 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 RAG1 transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous RAG-1 expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native RAG1 locus and enabling the study of RAG-1-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of RAG-1 pathway restoration in tumor cells with silenced or reduced RAG1 expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.