title: [Effect of BRD4 Inhibitor JQ1 on Proliferation Inhibition and Apotosis Induction in Jurkat Cells].
abstract: OBJECTIVE
  To investigate the effect and possible mechanism of bromo-domain inhibitors (JQ1) on proliferation inhibition and inducing apoptosis of acute T lymphocyte leukemia cell line (Jurkat) .
  
  
  METHODS
  Jurkat cell line was treated by JQ1 at different concentrations. MTT was used to detect the cell proliferation inhibition rate. The flow cytometry with AnnexinV-FITC/PI fluorescence staining was used to detect the changes of apoptosis rate, and real-time fluorescent quantitative PCR was used to detect c-Myc/Notch1 gene expression levels.
  
  
  RESULTS
  With the increasing of drug concentration and prolonging of time, the inhibitory rate of Jurkat cell growth was enhanced in time-dose dependent manner; Jurkat cells was treated by 0.8, 1.6, and 4 µ mol/LJQ1 for 48 h and 72 h, the cell apoptosis rate was enhanced with the increase of drug concentration and prolonging of time, and the difference was statistically different in comparison with the control group(P<0.05); PCR detection indicated that Notch1 and c-Myc mRNA expression was reduced in 48 h after JQ1 treatment, which was statistically different from the control group,(P<0.05) .
  
  
  CONCLUSIONS
  JQ1 can effectively inhibit the growth of Jurkat cell line, and potentially induce apoptosis through Notch1 and c-Myc gene. Hence JQ1 may be one of new methods used to treat T-ALL.
authors.affiliation: Graduate School of Shanxi Medical University,Taiyuan 030001, Shanxi Province, China.
authors.forename: Xiao-Xia
authors.initials: XX
authors.lastname: Sun
authors.affiliation: Department of Hematology, Shanxi Da Hospital Affiliated to Shanxi Medical University, Taiyuan 030001, Shanxi Province, China.E-mail:maliangming@medmail.com.cn.
authors.forename: Liang-Ming
authors.initials: LM
authors.lastname: Ma
authors.affiliation: Department of Hematology, Shanxi Da Hospital Affiliated to Shanxi Medical University, Taiyuan 030001, Shanxi Province, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
mesh_terms: D017209:Apoptosis; D001381:Azepines; D018797:Cell Cycle Proteins; D049109:Cell Proliferation; D005434:Flow Cytometry; D016259:Genes, myc; D006801:Humans; D019169:Jurkat Cells; D009687:Nuclear Proteins; D014157:Transcription Factors; D014230:Triazoles; D000092468:Bromodomain Containing Proteins
chemical_list: D001381:Azepines; D018797:Cell Cycle Proteins; D009687:Nuclear Proteins; D014157:Transcription Factors; D014230:Triazoles; C561695:(+)-JQ1 compound; C441289:BRD4 protein, human; D000092468:Bromodomain Containing Proteins