Structure analysis of ethyl ferulate from Rubus corchorifolius L.f.leaves and its inhibitory effects on HepG2 liver cancer cells  

作　　者：Xuexiang Chen Xian Wu Guo Liu Qun Wang Sasha A.Itenberg Wen Ouyang Mingyue Song William RDixon Yong Cao Hang Xiao 

机构地区：[1]School of Public Health,Guangzhou Medical University,Guangzhou,511436,PR China [2]Department of Kinesiology,Nutrition,and Health,Miami University,Oxford,OH,45056,United States [3]College of Food Science,South China Agricultural University,Guangzhou,510642,PR China [4]Pharmacy College,Hunan University of Traditional Chinese Medicine,Changsha,410007,PR China [5]Department of Food Science,University of Massachusetts,Amherst,MA,01003,United States

出　　处：《Food Bioscience》2022年第1期370-376,共7页食品生物科学（英文）

基　　金：supported by Natural Science Foundation of Guangdong basic and applied basic research foundation([2018]105 to Xuexiang Chen);U.S.Department of Agriculture(MAS00450,MAS00492 to Hang Xiao);Natural Science Foundation of Guangdong basic and applied basic research foundation(2021A1515010965 to Xuexiang Chen);Laboratory opening project of Guangzhou Medical University(PX-1020423 to Xuexiang Chen);Guangdong Provincial Department of Education(S202010570042 to Changhui Du&Xuexiang Chen);Communist Youth League Committee of Guangzhou Medical University(2019A060 to Changhui Du&Xuexiang Chen).

摘　　要：The tender leaves of Rubus corchorifolius L.f.(R.corchorifolius)have been made into herbal tea for relieving coughs in East and Southeast Asia from ancient times.Herein,we obtained an ethyl acetate extract from R.corchorifolius leaves and isolated a major bioactive compound within.Structural analysis of the isolated compound was performed by spectroscopic methods and the compound was identified as ethyl ferulate.Effect of ethyl ferulate on the growth and proliferation of human liver cancer HepG2 cells and normal human liver LO2 cells was determined by MTT assay.We found that ethyl ferulate significantly suppressed the cell proliferation of HepG2 cells(IC_(50)26.4μM),while it did not cause cytotoxicity on LO2 cells.In addition,flow cytometry analysis demonstrated that ethyl ferulate inhibited HepG2 cell growth via inducing cellular apoptosis.Specifically,ethyl ferulate reduced the electrical potential of the mitochondrial membrane and increased the concentration of calcium ions inside cells.Moreover,these changes were accompanied by increases in the expression of the pro-apoptotic proteins,such as cleaved caspase-3 and Bax.In contrast,cell morphology and growth of LO2 cells remained unaffected.In conclusion,for the first time,our observations demonstrated that ethyl ferulate possesses great potential as an effective and safe antitumor agent for cancer chemoprevention in humans.

关 键 词：Rubus corchorifolius L.f Ethyl ferulate Bioactive compound Functional food Apoptosis 

分 类 号：TS201.2[轻工技术与工程—食品科学] R735.7[轻工技术与工程—食品科学与工程]