title: [Effects of beta-elemene on proliferation and apoptosis of human multiple myeloma cell RPMI-8226].
abstract: This study was aimed to investigate the effect of beta-elemene on proliferation and apoptosis of human multiple myeloma cell line RPMI-8226 and its mechanism. The effect of beta-elemene on the growth of human multiple myeloma cell line RPMI-8226 was detected by MTT. The effect of beta-elemene on the apoptosis of RPMI-8226 cells was determined by flow cytometry with Annexin-V/PI staining. The effects of beta-elemene on the expression of BCL-2, caspase-3, DR-4 and NF-kappaB P65 proteins were analyzed by Western blot. The results showed that the beta-elemene obviously inhibited the proliferation of RPMI-8226 cells in both time- and dose-dependent manners. Treatment with 10 - 80 micromol/L beta-elemene for 48 hours induced apoptosis of RPMI-8226 cells in a dose-dependent manner. The expression of caspase-3 and DR-4 proteins in RPMI-8226 cells treated with beta-elemene increased in a time-dependent manner, while expressions of BCL-2 and NF-kappaB P65 proteins decreased. It is concluded that the beta-elemene can inhibit the proliferation of RPMI-8226 cells by inducing the cell apoptosis. Activating the mitochondrial and death receptor pathways of apoptosis and inhibiting the anti-apoptosis pathway may involve in the beta-elemene-induced apoptosis.
authors.affiliation: Department of Hematology, The Second Hospital, Hebei Medical University, Shijiazhuang 050000, Hebei Province, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Chen
authors.forename: Liang
authors.initials: L
authors.lastname: Shi
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Cheng
authors.forename: Li
authors.initials: L
authors.lastname: Yao
authors.forename: Ying-Ying
authors.initials: YY
authors.lastname: Yang
authors.forename: Ling
authors.initials: L
authors.lastname: Pan
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects*; D006801:Humans; D009101:Multiple Myeloma / Q000378:metabolism / Q000473:pathology*; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D012717:Sesquiterpenes / Q000494:pharmacology*; D051996:Transcription Factor RelA / Q000378:metabolism
chemical_list: D019253:Proto-Oncogene Proteins c-bcl-2; C498143:RELA protein, human; D012717:Sesquiterpenes; D051996:Transcription Factor RelA; C445979:beta-elemene