DHX9 Knockout HEK293T Cell Line

The choice depends on whether you are studying DHX9 (DEAH-box helicase 9, RNA helicase A)'s role as a multifunctional RNA/DNA helicase or modeling its emerging functions as a cancer therapeutic target. The Knockout line is the standard tool for asking whether DHX9 is required for these processes — DHX9 is a DEAH-box ATP-dependent RNA/DNA helicase with diverse roles in transcription, splicing, translation, R-loop resolution, and Alu element repeat regulation; DHX9 has emerged as a cancer therapeutic target, particularly in microsatellite instability-high (MSI-H) cancers where DHX9 inhibition causes synthetic lethal R-loop accumulation. Overexpression is useful for studying DHX9 in heterologous expression contexts. For DHX9 research, the EDITGENE DHX9 Knockout in HEK293T is a workhorse mechanistic platform — HEK293T's very high transfection efficiency supports systematic structure-function studies. Rescue with wild-type or ATPase-dead DHX9 (K417R Walker A motif) is the standard specificity control. The knockout is a critical specificity tool for emerging DHX9 inhibitors (in preclinical development for MSI-H cancers and other contexts) — DHX9 has been characterized as one of the most promising new cancer drug targets in the synthetic lethal/R-loop biology space.

Primary applications: • R-loop accumulation: R-loop imaging (S9.6 antibody) and R-loop sequencing (DRIP-seq) given DHX9's role in R-loop resolution. • Synthetic lethality with MSI-H: in MSI-H-relevant contexts, characterization of DHX9 loss-induced synthetic lethality. • Alu element regulation: characterization of Alu inverted repeat-containing transcript biology in DHX9-null cells. • DHX9 inhibitor specificity: critical genetic control for emerging DHX9 inhibitors in cancer drug development. EDITGENE recommends this HEK293T-based model for biochemical DHX9 research and structure-function studies as one of the most promising emerging cancer drug targets.

Yes. DHX9 rescue experiments are well-established for helicase research: • Construct design: use a codon-modified DHX9 sequence with a small C-terminal tag (FLAG, HA). DHX9 has dsRBD1, dsRBD2 (double-stranded RNA binding), DEAH-box helicase core, RGG/RGG-box, and OB-fold — preserve all elements. • ATPase-dead rescue: K417R mutation in the Walker A motif abolishes ATPase activity and serves as the standard specificity control. • Helicase-dead rescue: DEAH-box motif II mutations abolish helicase activity while retaining ATP binding. • Functional readout: rescue should restore R-loop resolution measured by S9.6 antibody imaging and DRIP-seq analysis. HEK293T transduces with very high efficiency and supports stable rescue line generation for systematic DHX9 mutation analysis.