
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
SSX1 CRISPR Activation Plasmid (h) | sc-403551-ACT | 20 µg | $397.00 | |||
SSX1 CRISPR Activation Plasmid (h2) | sc-403551-ACT-2 | 20 µg | $397.00 |
SSX1 (synovial sarcoma, X breakpoint 1) encodes a cancer-testis antigen–like nuclear protein implicated in transcriptional regulation and chromatin-associated processes, with reported interactions linking it to Polycomb-related repression and epigenetic control of gene expression. SSX1 activity is associated with modulation of developmental programs, cell identity, and differentiation states through effects on transcriptional networks. Aberrant SSX family expression is most notable in synovial sarcoma through the SS18–SSX fusion oncogenes, which rewire chromatin remodeling and transcriptional programs. As a result, SSX1 is widely studied in tumor biology, epigenetics, and immune-oncology–relevant antigen expression contexts as a marker of dysregulated gene control.
SSX1 CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous SSX1 expression without altering the underlying DNA sequence.
SSX1 CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the SSX1 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 SSX1 transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous SSX1 expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native SSX1 locus and enabling the study of SSX1-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of SSX1 pathway restoration in tumor cells with silenced or reduced SSX1 expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.