Oroxin B

Oroxin B (OB) is a BBB-permeable flavonoid isolated from traditional Chinese herbal medicine Oroxylum indicum (L.) Vent. Oroxin B (OB) possesses obvious inhibitory effect and induces early apoptosis rather than late apoptosis on liver cancer cells through upregulation of PTEN, down regulation of COX-2, VEGF, PI3K, and p-AKT. Oroxin B (OB) selectively induces tumor-suppressive ER stress in malignant lymphoma cells^{[1][2][3][4][5]}. In Vitro:Oroxin B (0-2 μM, 48 h) inhibits the proliferation (48 h), and induces apoptosis (12 h) of the human hepatoma cell line (SMMC 7721)^[1].
Oroxin B (0-2 μM, 48 h) increases PTEN and inhibits COX-2, VEGF, p-AKT, and PI3K in SMMC 7721^[1].
Oroxin B (0-30 μM, 48 h) selectively induces ER stressin (stress marker: glyburide labeled by rhodamine) in Raji cell^[2].
Oroxin B (160 μM, 24 h) inhibits IL-1β induced inflammation-related (iNOS, COX-2, TNF-α, IL-6, and IL-1β) markers in chondrocytes^[3].
In Vivo:Oroxin B (30 mg/kg, i.p., 28 days) induces malignant lymphoma cell ER stress, and inhibits tumor growth in human lymphoma cell (Raji cell) xenograft model^[2].
Oroxin B (160 μM of 10 μL, injected into the knee joints of mice) protects articular cartilage in destabilized medial meniscus (DMM) induced mice OA^[3].
Oroxin B (200 mg/kg/day, oral gavage) relieves hepatic inflammation and inhibits MAFLD progression in HFD-fed rats^[4].