Pax-6 Lentiviral Activation Particles (h): sc-418357-LAC

PAX6 encodes Pax-6, a paired box/homeobox transcription factor that functions as a master regulator of ocular, neural, and pancreatic lineage specification. Pax-6 coordinates gene programs controlling progenitor maintenance, cell fate commitment, and tissue morphogenesis by binding cis-regulatory elements and integrating with developmental signaling networks. Dysregulated PAX6 activity perturbs transcriptional circuitry underlying eye and brain development and alters endocrine differentiation programs relevant to pancreatic islet biology. As a dosage-sensitive regulator, PAX6 is widely used as a molecular handle to probe developmental gene regulatory networks and transcription factor hierarchy in human cell models.

Pax-6 Lentiviral Activation Particles (h) address this need by packaging the complete synergistic activation mediator (SAM) transcriptional activation system into transduction-ready, high-titer lentiviral particles, enabling efficient PAX6 upregulation across a broader range of human cell types.

Pax-6 Lentiviral Activation Particles (h) deliver all functional components of the synergistic activation mediator (SAM) system via lentiviral transduction. The system comprises three particle preparations co-transduced into target cells: one encoding catalytically inactive dCas9 (D10A and N863A mutations) fused to the VP64 transactivation domain with a blasticidin resistance gene; one encoding the MS2-p65-HSF1 fusion protein with a hygromycin resistance gene; and one encoding a target-specific 20 nt sgRNA fused to two MS2 RNA aptamers with a puromycin resistance gene. Following lentiviral transduction and genomic integration of the expression cassettes, the SAM components are stably expressed and assemble at the target locus within the proximal promoter region upstream of the PAX6 transcriptional start site, where VP64, p65, and HSF1 act cooperatively to recruit endogenous transcriptional machinery and drive sustained upregulation of endogenous Pax-6 expression. The use of nuclease-inactive dCas9 avoids the introduction of double-strand DNA breaks and preserves the native PAX6 genomic locus and regulatory architecture.

The lentiviral format offers several practical advantages: stable genomic integration supports heritable activation across cell divisions; high-titer particle preparations eliminate the need for in-house viral production; and compatibility with primary, non-dividing, and transfection-resistant cell types expands experimental accessibility. Successful transduction can be confirmed and enriched through triple antibiotic selection using puromycin, hygromycin, and blasticidin.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.