NFAT2 Recombinant Mouse mAb (S-4705)

NFAT2 (Nuclear Factor of Activated T-cells 2), also known as NFATc1, is a critical transcription factor belonging to the NFAT family that plays a pivotal role in regulating immune responses, particularly in T-cell activation and differentiation. Under resting conditions, NFAT2 resides in the cytoplasm in a highly phosphorylated state; however, upon T-cell receptor stimulation, intracellular calcium levels rise, activating the phosphatase calcineurin, which dephosphorylates NFAT2 to expose its nuclear localization signal, thereby enabling its translocation into the nucleus. Once inside the nucleus, NFAT2 binds to specific DNA sequences often in cooperation with other transcription factors like AP-1 to induce the expression of key cytokines such as interleukin-2 (IL-2), interferon-gamma, and tumor necrosis factor-alpha, which are essential for clonal expansion and the development of effector T cells. Beyond its canonical function in immunity, NFAT2 is implicated in various physiological and pathological processes including osteoclast differentiation, cardiac valve formation, and cancer progression, making it a significant therapeutic target for immunosuppressive drugs like cyclosporine A and tacrolimus, which exert their effects by inhibiting the calcineurin-mediated activation of this protein.