Mouse IRF3-KO Reporter RAW 264.7 Cells

IRF3 knockout reporter mouse macrophages

RAW-Lucia™ ISG-KO-IRF3 cells were generated from the RAW-Lucia™ ISG cell line, which is derived from the murine RAW 264.7 macrophage cell line, through the stable knockout of the IRF3 gene. RAW-Lucia™ ISG-KO-IRF3 cells express a secreted reporter gene, Lucia luciferase, under the control of the I-ISG54 promoter which is comprised of the IFN-inducible ISG54 promoter enhanced by a multimeric ISRE.

IRF-3 is a critical player in the induction of type I IFNs following virus infection. IRF3 is activated by phosphorylation events mediated by the IKK-related kinases TBK-1 and IKKϵ downstream of nucleic acid sensors that detect dsDNA (e.g. cGAS), dsRNA (e.g. RIG-I) or cyclic dinucleotides (STING).

RAW-Lucia™ ISG-KO-IRF3 cells allow the monitoring of IRF activation by determining the activity of Lucia luciferase. The levels of IRF-induced Lucia in the cell culture supernatant can be easily monitored using QUANTI-Luc™ 4 Lucia/Gaussia, a Lucia and Gaussia luciferase detection reagent.

RAW-Lucia ISG-KO-IRF3 cells respond to murine type I IFNs but do not respond to cytosolic nucleic acids, such as poly(dA:dT)/LyoVec ,VACV70/LyoVec, poly(I:C)/LyoVec and 2'3'-cGAMP.

RAW-Lucia™ ISG-KO-IRF3 cells are resistant to Zeocin®.