title: [Effect of curcumin on expressions of mitogen-activated protein kinases and matrix metalloproteinases in Jurkat cells].
abstract: OBJECTIVE
  To investigate the expressions of mitogen-activated protein kinases (MAPKs) and matrix metalloproteinases (MMPs) in apoptotic human T cell lymphoma Jurkat cells induced by curcumin in vitro and explore the possible molecular mechanisms of curcumin-induced apoptosis.
  
  
  METHODS
  Jurkat cells were treated with different concentrations of curcumin, and the cell proliferation and cell cycle changes were detected by MTT assay and flow cytometry, respectively. Western blotting and gelatin zymography were employed to examine the protein expression levels of MAPKs and MMPs activity in the exposed cells.
  
  
  RESULTS
  Curcumin inhibited the proliferation of Jurkat cells in a time- and dose-dependent manner, and caused cell cycle arrest in G0/G1 phase. Treatment of Jurkat cells with 25, 50, and 75 µmol/L curcumin resulted in a concentration-dependent increase of JNK and p-JNK expressions (P<0.01) without significantly affecting the expressions of ERK1/2 and P38 MAPK or the activity of MMP-2 and MMP-9.
  
  
  CONCLUSIONS
  Curcumin within the concentration range of 6.25-25.00 µmol/L can induce apoptosis and cell cycle arrest of Jurkat cells, the mechanism of which might involve the activation of JNK pathway but not the MMPs.
authors.affiliation: First Clinical College, Nanjing University of Chinese Medicine, Nanjing 210046, China; Department of Hematology, First Hospital Affiliated to Nanjing University of Chinese Medicine, Nanjing 210009, China a. E-mail: zhugh0601@163.com.
authors.forename: Guohua
authors.initials: G
authors.lastname: Zhu
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.forename: Haiping
authors.initials: H
authors.lastname: Dai
authors.forename: Qun
authors.initials: Q
authors.lastname: Shen
mesh_terms: D017209:Apoptosis; D002453:Cell Cycle; D002455:Cell Division; D049109:Cell Proliferation; D003474:Curcumin / Q000494:pharmacology*; D005434:Flow Cytometry; D006801:Humans; D019169:Jurkat Cells; D020935:MAP Kinase Signaling System; D020778:Matrix Metalloproteinase 2 / Q000378:metabolism; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism; D020782:Matrix Metalloproteinases / Q000378:metabolism*; D048052:Mitogen-Activated Protein Kinase 3 / Q000378:metabolism; D020928:Mitogen-Activated Protein Kinases / Q000378:metabolism*; D048051:p38 Mitogen-Activated Protein Kinases / Q000378:metabolism
chemical_list: D048052:Mitogen-Activated Protein Kinase 3; D020928:Mitogen-Activated Protein Kinases; D048051:p38 Mitogen-Activated Protein Kinases; D020782:Matrix Metalloproteinases; C522361:MMP2 protein, human; D020778:Matrix Metalloproteinase 2; C579270:MMP9 protein, human; D020780:Matrix Metalloproteinase 9; D003474:Curcumin