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INCA-6 is a selective inhibitor of transcription factor NFAT with Kd value of 0.8 mM in vitro[1].

NFAT (Nuclear factor of activated T-cells) is a general name which is applied to a family of transcription factors that are important in immune response. They are expressed in most immune system cells. Calcium signaling plays an important role in NFAT activation. Calmodulin activates calcineurin (CN) which is a serine/threonine phosphatase, then dephosphorylates the amino termini of NFAT proteins resulting a conformational change. NFAT will transport into nuclear. NFAT proteins will cooperate with other nuclear resident transcription factors due to that they have weak DNA-binding capacity. NFAT proteins have weak DNA-binding capacity NFAT transcription factors are specifically implicated in the process of cell motility and are related to breast cancer.[2]

INCA-6 treatment significant blocked translocation of nuclear factor of activated T-cells c1. INCA-6 effectively blocked the stimulation of vascular endothelial growth factor stimulation at 1.0 μM. INCA-6 significantly tube formation at 1.0μM in human retinal microvascular endothelial cells[1]. INCA-6 at 50 μM inhibited ATP-induced activation of NFATc1 in MG-5 cells.[3] In BV-2 cells, INCA-6 at 10

μM significantly inhibited ATP-induced CXCL2 expression.[4] INCA-6 reversed the proliferative effect of E2.[5]

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