title: [Effect of Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic-acid on human gastric cancer cells and its mechanism].
abstract: OBJECTIVE
  To investigate the apoptosis-inducing effect of Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic-acid (5F), a compound isolated from Pteris semipinnata L (PsL), on human gastric cancer SGC7901 cells and explore its mechanism.
  
  
  METHODS
  The inhibitory effect of 5F on SGC7901 cells was observed by MTT assay and flow cytometry, and the changes of the expression of Bcl-2 and Bax in SGC7901 cells following 5F exposure were evaluated by Western blot analysis.
  
  
  RESULTS
  5F inhibited the proliferation of SGC7901 cells in a concentration- and time-dependent manner, and the cell apoptosis induced by 5F was confirmed by Annexin V-EGFP staining and caspase-3 activation assay. The cell apoptosis induced by 5F was associated with decreased Bcl-2 and increased Bax expressions.
  
  
  CONCLUSIONS
  5F exposure induces apoptosis in SGC7901 cells by activating mitochondrial apoptotic pathways.
authors.affiliation: Department of General Surgery, 422 Hospital of PLA, Zhanjiang, China. chenjf623@163.com
authors.forename: Jian-fa
authors.initials: JF
authors.lastname: Chen
authors.forename: Yin-xiang
authors.initials: YX
authors.lastname: Chen
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Ming
authors.initials: M
authors.lastname: Fu
authors.forename: Ying-nian
authors.initials: YN
authors.lastname: Lv
authors.forename: Li
authors.initials: L
authors.lastname: Li
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D004224:Diterpenes / Q000302:isolation & purification / Q000494:pharmacology*; D006801:Humans; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D032495:Pteris / Q000737:chemistry*; D013274:Stomach Neoplasms / Q000473:pathology*; D051028:bcl-2-Associated X Protein / Q000378:metabolism
chemical_list: C479310:11-hydroxy-15-oxokaur-16-en-19-olic acid; D000972:Antineoplastic Agents, Phytogenic; C494826:BAX protein, human; D004224:Diterpenes; D019253:Proto-Oncogene Proteins c-bcl-2; D051028:bcl-2-Associated X Protein