In vitro activity: Nobiletin, a citrus flavonoid isolated from citrus peels like in tangerine, which has anti-inflammatory and anti-tumor activities. Nobiletin, a polymethoxyflavonoid, is identified as an inhibitor of both NO and O 2- generation. Nobiletin significantly inhibites two skin inflammation induced by double TPA application. It also suppresses the expression of cyclooxygenase-2 and inducible NO synthase proteins and prostaglandin E2 release. Nobiletin inhibites the tumor-invasive activity of human fibrosarcoma HT-1080 cells in the Matrigel model, not only by suppressing the expression of MMPs but also augmenting TIMP-1 production through interfering the phosphatidylinositol 3-kinase pathway (PI3-K). Nobiletin may also prevent atherosclerosis at the level of the vascular wall by inhibiting macrophage foam-cell formation.

Kinase Assay: Nobiletin, a citrus flavonoid isolated from citrus peels like in tangerine, has anti-inflammatory and anti-tumor activities. Nobiletin is able to suppress tumor growth, invasion, proliferation, and metastasis in vitro and in animal studies. Nobiletin was also found to potentially inhibit cartilage degradation. In human nasopharyngeal carcinoma cell lines (HONE-1 and NPC-BM), nobiletin treatment significantly inhibited cells invasion via inhibiting the phosphorylation of ERK1/2. When tested with rat C6 glioma cell, nobiletin was shown to inhibit cell proliferation via suppress ERK activity.

Cell Assay: Nobiletin is shown to have the ability to suppress tumor growth and metastasis. In human nasopharyngeal carcinoma cell lines (HONE-1 and NPC-BM), nobiletin treatment significantly inhibited cells invasion via inhibiting the phosphorylation of ERK1/2 [2]. When tested with rat C6 glioma cell, nobiletin was shown to inhibit cell proliferation via suppress ERK activity.