Formulation
0.01 M phosphate buffered saline (PBS) pH 7.2, 150 mM NaCl with no carrier protein, potassium or preservatives added.
Regulatory Status
Functional Assay: In vitro activity of TIF-3C5 - inhibits IFNalpha -induced (IFNalpha-A, -1, -4, -5, -11 and 13) Stat1 phosphorylation in vitro. [TIF-1D6 does not block in vitro functional activity]. - blocks IFNA (IFNA-A, -1, -4, -5, -11 and 13) induction of MHC-I expression (H2-Kb) using L929 or fibrosarcoma cell lines in a dose dependent manner. - neutralizes IFNA-induced antiviral activity in vitro following infection of L929 cells with VSV. Functional activity of both recombinant (IFNalpha-A, -1, -4, -5, -11 and 13) and natural IFNalpha can be blocked with no neutralization of IFNgor IFNb. In vivo activity of TIF-3C5 - TIF-3C5 circulates with a half-life of 4 days - blockade of IFNa by TIF-3C5 increases the lethality of mice infected with West Nile Virus (WNV), similar to susceptibility of Irf7-/- mice.
Each investigator should determine their own optimal working dilution for specific applications.