Abstract:
:Moscatilin is a bibenzyl derivative extracted from the Dendrobium aurantiacum var. denneanum, which has traditionally been used as an immunomodulatory treatment in China. The present study was designed to determine whether moscatilin is a pro‑apoptotic agent in pancreatic cancer, and to elucidate the underlying mechanisms. The apoptotic and anti‑proliferative effects of moscatilin on pancreatic cancer cells were determined in vitro using biochemical assays, such as the MTT assay, colony formation assay, Hoechst staining and DNA fragmentation assay, and in vivo using Panc‑1 pancreatic cancer xenografts. Western blotting was also conducted to evaluate the expression levels of B‑cell lymphoma 2 (Bcl2), Bcl2‑associated X protein (Bax), Bcl2 homologous antagonist killer (Bak), caspase 3, cleaved‑caspase 3, poly (ADP‑ribose) polymerase, p‑c‑Jun N‑terminal kinase (JNK)/stress‑activated protein kinases (SAPK) and JNK/SAPK in response to moscatilin. We used DCFH‑DA to detect the production of reactive oxygen species (ROS) induced by moscatilin. The present study demonstrated that moscatilin markedly inhibited pancreatic cancer cell viability and induced cell apoptosis in a concentration‑dependent manner. Conversely, moscatilin did not affect the cell viability of human umbilical vein endothelial cells at the comparable dosage. Treatment with moscatilin suppressed clonogenicity of Panc‑1 cells in a concentration‑dependent manner. Furthermore, a decrease in Bcl2 expression, and an increase in the expression levels of Bak and Bax, was detected following treatment with moscatilin, resulting in an increase in the proapoptotic/anti‑apoptotic expression ratio (Bax/Bcl2) in Panc‑1 cells. Moscatilin also induced activation of the caspase‑dependent mitochondrial apoptotic pathway. In addition, moscatilin enhanced cellular ROS production and induced activation of JNKSAPK signaling pathway. Conversely, pretreatment with the ROS scavenger N‑acetylcysteine or the JNK/SAPK‑specific inhibitor SP600125 prevented moscatilin‑mediated reductions in cell viability. Furthermore, moscatilin inhibited tumor growth in nude mice bearing Panc‑1 cells, without apparent toxicity. In conclusion, these results demonstrated that moscatilin may induce pancreatic cell apoptosis, and therefore may be considered a potential therapeutic agent for the treatment of pancreatic cancer.
journal_name
Mol Med Repjournal_title
Molecular medicine reportsauthors
Zhang L,Fang Y,Xu XF,Jin DYdoi
10.3892/mmr.2017.6144subject
Has Abstractpub_date
2017-03-01 00:00:00pages
1195-1203issue
3eissn
1791-2997issn
1791-3004journal_volume
15pub_type
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