HEK-Blue™ KO-TIFA cells were generated from HEK-Blue™ Null1-v cells through the stable knockout of the TIFA gene.
Cell Line Stability
Cells will undergo genotypic changes over time resulting in reduced responsiveness in normal cell culture conditions. Genetic instability is a biological phenomenon that occurs in all stably transfected cells. Therefore, it is critical to prepare an adequate number of frozen stocks at early passages. HEK-Blue™ KO-TIFA cells should not be passaged more than 20 times to remain fully functional.
Quality Control
• TIFA gene knockout has been verified by DNA sequencing, RT-qPCR, and functional assays.
• The stability for 20 passages following thawing has been verified.
• These cells are guaranteed mycoplasma-free.
CELL LINE DESCRIPTION
HEK-Blue™ KO-TIFA cells were generated from HEK-Blue™ Null1-v cells through the stable knockout of the TIFA gene. The parental cells derive from human embryonic kidney 293 (HEK-293) cells. HEK-Blue™ KO-TIFA cells express a secreted embryonic alkaline phosphatase (SEAP) under the control of an NF-κB-inducible promoter comprised of an IFN-β minimal promoter fused to five NF-κB and AP-1 binding sites. Levels of SEAP in the supernatant can be easily determined with HEK-Blue™ Detection, a SEAP detection cell culture medium. Unlike their parental cell line, HEK?Blue™ KO-TIFA cells do not respond to cytosolic ADP?Heptose. However, they do respond to other NF-κB inducers such as TNF-α and IL-1β. HEK?Blue™ KO-TIFA cells are resistant to Zeocin™