title: [Apoptosis and cell cycle arrest in lymphoma Raji cells induced by arsenic trioxide].
abstract: This study was aimed to investigate the apoptosis induced by arsenic trioxide (As2O3) in lymphoma Raji cells and its possible mechanisms. The inhibitory effect of different concentration of As2O3 on cell proliferation was tested by MTT assay. Apoptosis was observed with electron microscope and DNA electrophoresis. The distribution of cell cycles and cell apoptosis were detected by flow cytometry. The results showed that the 1-8 micromol/L As2O3 inhibited Raji cell growth effectively in a dose-and time-dependent manner. As2O3 at 2-8 micromol/L could induce the cell apoptosis and cell cycle arrest. However, As2O3 at 1 micromol/L inhibited Raji cells proliferation only by cell cycle arrest, without any signs of cell apoptosis. In conclusion, substantial proliferation inhibition, cell cycle arrest and apoptosis in Raji cells could be induced by As2O3. Cell cycle arrest happens with apoptosis, when treated with As2O3.
authors.affiliation: Department of Hematology, The Fourth Hospital, Kunming Medical College, Kunming 650021, Yunnan Province, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Long
authors.forename: Hui-Min
authors.initials: HM
authors.lastname: Li
authors.forename: Chen
authors.initials: C
authors.lastname: Qing
authors.forename: Mei-Jia
authors.initials: MJ
authors.lastname: Yu
authors.forename: Yan-Li
authors.initials: YL
authors.lastname: Zhang
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D000077237:Arsenic Trioxide; D001152:Arsenicals / Q000494:pharmacology*; D002453:Cell Cycle / Q000187:drug effects*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D005434:Flow Cytometry; D006801:Humans; D008223:Lymphoma / Q000473:pathology; D010087:Oxides / Q000494:pharmacology*
chemical_list: D001152:Arsenicals; D010087:Oxides; D000077237:Arsenic Trioxide