Cordycepin Affects Multiple Apoptotic Pathways to Mediate Hepatocellular Carcinoma Cell Death

• Published in: Anti-cancer agents in medicinal chemistry Vol. 17; no. 1; p. 143
• Main Authors: Zhou, Yulin, Guo, Zhihua, Meng, Qingfan, Lu, Jiahui, Wang, Ning, Liu, Hui, Liang, Qiming, Quan, Yutong, Wang, Di, Xie, Jing
• Format: Journal Article
• Language: English
• Published: Netherlands 2017
• Subjects: Animals; Antineoplastic Agents - pharmacology; Antineoplastic Agents - therapeutic use; Apoptosis - drug effects; Carcinoma, Hepatocellular - drug therapy; Carcinoma, Hepatocellular - metabolism; Carcinoma, Hepatocellular - pathology; Cell Survival - drug effects; Deoxyadenosines - pharmacology; Deoxyadenosines - therapeutic use; Hep G2 Cells; Humans; Liver - drug effects; Liver - metabolism; Liver - pathology; Liver Neoplasms - drug therapy; Liver Neoplasms - metabolism; Liver Neoplasms - pathology; Male; Membrane Potential, Mitochondrial - drug effects; Mice; Mice, Inbred BALB C; Mice, Nude; Mitochondria - drug effects; Mitochondria - metabolism; Mitochondria - pathology; Reactive Oxygen Species - metabolism; Signal Transduction - drug effects
• ISSN: 1875-5992
• DOI: 10.2174/1871520616666160526114555

Cordycepin possesses anti-inflammatory, anti-metastatic and anti-tumor properties. The present study investigates the anti-hepatocellular carcinoma activities of cordycepin in in vitro and in vivo models. Cell viability, apoptosis rate, intracellular reactive oxygen species (ROS) level and mitochondrial membrane potential (MMP) were determined by 3-(4,5)-dimethylthiahiazo(-z-y1)-3,5-di-phenytetrazoliumromide bromide assay, annexin V/propidium iodide double staining, 2',7'-dichlorfluorescein-diacetate and 5,5',6,6'-tetrachloro-1,1',3,3' tetraethylbenzimidazolylcarbocyanine iodide (JC-1) staining respectively. The expressions of pro-apoptosis and antiapoptosis proteins were detected by western blot. A PLC/PRL/5-xenografted nude mouse model was applied to further confirm the anti-tumor activities of cordycepin. Cordycepin suppressed cell viability, enhanced apoptotic rate, inhibited cell proliferation and increased cleaved poly (ADP-ribose) polymerase (PARP) level. Apoptotic alteration on mitochondria and abnormal changes on b-cell lymphoma 2 (Bcl-2) and b-cell lymphoma-extra large (Bcl-xL) levels were observed in cordycepin-treated cells. Furthermore, cordycepin suppressed the activation of extracellular signaling-regulated kinase (ERKs) and mammalian target of rapamycin (mTOR) in both PLC/PRF/5 and HepG2 cells. Finally, PLC/PRL/5-xengrafted BALB/c athymic nude mice were performed to confirm cordycepin's anti-tumor action. Our finding suggests that the anti-hepatocellular carcinoma properties of cordycepin are related to its modulation of multiple anti-apoptotic and pro-apoptotic pathways. Our study provides an experimental evidence for cordycepin as a rational agent for hepatocellular carcinoma treatment.