C19orf66 Knockout Cell Line (HEK293)

The choice depends on whether you are studying SHFL (RyDEN, Repressor of Yield of DENV)'s role as an interferon-stimulated antiviral factor or its emerging functions in cellular RNA biology. The Knockout line is the standard tool for asking whether SHFL is required for restricting viral replication — SHFL is an ISG with broad antiviral activity against dengue virus, Zika virus, HIV-1, SARS-CoV-2, and other RNA viruses. Overexpression is useful for studying SHFL-induced antiviral mechanisms. For antiviral immunity research, the EDITGENE SHFL Knockout in HEK293 enables study of intrinsic antiviral defense and ISG function. SHFL functions through inhibiting viral programmed ribosomal frameshifting (e.g., HIV-1 Gag-Pol frameshift) and other translation-level antiviral mechanisms. Rescue with wild-type or domain-deletion SHFL enables structure-function studies. The knockout is valuable for studying virus-host interactions in respiratory and arbovirus research.

Primary applications: • Viral replication restriction: dengue virus, Zika virus, SARS-CoV-2, or HIV-1 replication assays in SHFL-null versus rescued HEK293 cells. • Programmed ribosomal frameshifting: dual-luciferase frameshift reporter assays to measure SHFL's inhibition of viral frameshifting (e.g., HIV-1 Gag-Pol −1 frameshift). • ISG screening: SHFL induction in response to interferon stimulation and antiviral activity characterization. • Cellular RNA biology: emerging roles of SHFL in regulating endogenous mRNA translation given its translational regulation activity. EDITGENE recommends this model for researchers investigating antiviral immunity, ISG biology, and SHFL-mediated translational control of viral and cellular RNAs.

Yes. SHFL rescue experiments are well-established for antiviral research: • Construct design: use a codon-modified SHFL sequence with a small C-terminal tag (FLAG, HA). SHFL contains zinc finger domains critical for RNA binding — preserve these elements. • Domain-deletion rescue: zinc finger or other domain mutations enable structure-function studies separating RNA binding from antiviral activities. • Antiviral activity readout: rescue should restore restriction of dengue, Zika, or HIV-1 replication and inhibition of programmed ribosomal frameshifting in dual-luciferase reporter assays. • ISG response context: SHFL rescue interpretation should consider IFN signaling status of cells. HEK293 transduces efficiently with lentivirus and supports stable rescue line generation.