
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
Mast Cell Chymase CRISPR Activation Plasmid (h) | sc-403686-ACT | 20 µg | $397.00 |
CMA1 encodes mast cell chymase, a secreted chymotrypsin-like serine protease stored in mast cell granules and released during degranulation. Chymase participates in extracellular matrix remodeling and processing of bioactive peptides, influencing local inflammatory signaling and vascular tone in tissue microenvironments. Its activity interfaces with mast cell–driven pathways involving protease-activated receptors, cytokine/chemokine networks, and fibrosis-associated remodeling programs. Dysregulated CMA1 expression or chymase activity has been linked to allergic inflammation, asthma, cardiovascular remodeling, and fibrotic skin and lung disorders, making it a useful molecular handle for mechanistic studies of mast cell biology.
Mast Cell Chymase CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous CMA1 expression without altering the underlying DNA sequence.
Mast Cell Chymase CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the CMA1 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 CMA1 transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous Mast Cell Chymase expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native CMA1 locus and enabling the study of Mast Cell Chymase-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of Mast Cell Chymase pathway restoration in tumor cells with silenced or reduced CMA1 expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.