Nimbolide induces apoptosis in human nasopharyngeal cancer cells

作者：Chien Su Yu; Hsu Ching Hui; Lin Chia Chieh; Chuang Yi Ching; Lo Yu Sheng; Hsi Yi Ting; Hsieh Ming Ju^*; Chen Mu Kuan^*

来源：Environmental Toxicology, 2017, 32(8): 2085-2092.

DOI：10.1002/tox.22423

• apoptosis
• cell cycle
• MAPK
• nasopharyngeal carcinoma
• nimbolide

Nasopharyngeal carcinoma (NPC), a tumor arising from epithelial cells that cover the surface and line the nasopharynx, is a rare malignancy worldwide but is prevalent in certain geographical areas, such as Southern Asia (Taiwan, Hong Kong, Singapore, Malaysia, and Southern China) and North Africa. Despite advances in diagnostic techniques and improvements in treatment modalities, the prognosis of NPC remains poor. Therefore, an effective chemotherapy regimen that enhances tumor sensitivity to chemotherapeutics is urgently required. Nimbolide, derived from Azadirachta indica, has a wide range of beneficial effects, including anti-inflammatory and anticancer properties. The present study evaluated the antitumor activity of nimbolide in NPC cells and its underlying mechanisms. Our results revealed that the treatment of HONE-1 cells with nimbolide potently inhibited cell viability. Moreover, nimbolide led to cell cycle arrest, which subsequently activated caspase-3, -8, and -9 and poly (ADP-ribose) polymerase to induce cell apoptosis. Moreover, nimbolide induced Bik, Bax, and t-Bid expression in HONE-1 cells. The results indicated that nimbolide induces apoptosis through the modulation of extracellular signal-regulated kinases 1 and 2 (ERK1/2) pathways. Nimbolide induces apoptosis in human NPC cells and is a potential chemopreventive agent against NPC proliferation.

• 出版日期2017-8
• 单位中国医科大学