derives from/develops from 2fTGH cell U-5A cell 2021-10-09T21:27:13Z BTO:0006556 BrendaTissueOBO Marion The human sarcoma cell line HT 1080 was transfected with a vector encoding a selectable marker (guanine phosphoribosyltransferase) regulated by alpha interferon to create the 2fTGH cell line, enabling the selection of mutations in genes encoding components of the interferon signalling pathway. Chemical mutagenesis of the parent 2fTGH cell line enabled the isolation of a number of IFNg signalling mutants available from ECACC: U2A , U3A , U4A, U4C, U5A, U6A. Each contains a different mutation in the IFN signalling pathway. The 2fTGH panel provides a tool for the in vitro study and comparison of disrupted interferon signalling at multiple points across the IFN pathway. The U5A mutant cell line lacks the ifnar2-2 component of the interferon-alpha and interferon-beta receptor and the beta-R1 gene product. U5A is completely defective in interferon alphabeta binding and response. U5A cell