Interferon-gamma (IFN-gamma) is a pleiotropic cytokine with antiproliferative, pro-apoptotic and antitumor activity. It is a homodimer formed by the association of two 17 kDa polypeptides, that bind in an antiparallel manner to form a mature 50 kDa molecule. This symmetry allows for a single molecule to bind two receptors amplifying downstream signaling. IFN-gamma is secreted by CD4 T helper type 1 cells and CD8 cytotoxic cells, γδ T cells, NK cells and to a lesser extent by NK T cells, B cells and APC cells. Its expression is induced by cytokines such as IL-12, IL-15, IL-18 and type I IFN. The effects of IFN-gamma are mediated through the activation of the JAK/STAT pathway which modulates the transcription of many genes. IFN-gamma signaling plays a role in host defense, immune surveillance, establishing adaptive immunity and in regulating inflammation, apoptosis and the cell cycle.

The entire kit may be stored at -20°C for up to 1 year from the date of shipment. Avoid repeated freeze-thaw cycles. The kit may be stored at 4°C for up to 6 months. For extended storage, it is recommended to store at -80°C.