title: [Exploratory study of novel leukemia bone marrow stromal cell adhesion mediated drug resistance model].
abstract: OBJECTIVE
  To construct cell adhesion mediated drug resistance (CAM-DR) model based on Acute lymphocyte leukemia bone marrow stromal cells(BMSC) for further studying drug resistance of leukemia.
  
  
  METHODS
  Firstly, we adhesively cultured Jurkat cell strain of human leukaemia lymphocyte with the matrix cell radiated by (60)Co to construct the model of CAM-DR, then evaluated the model in morph and construction by scanning electron microscope. The IC50 of DNR on Jurkat cell was examen by MTT and the concentration and distribution of DNR in the cell was detected by flow cytometry.
  
  
  RESULTS
  When the Jurkat cells were cultured with BMSC for 24 h, we found that Jurkat cells had adhesioned the bone marrow stromal cell layer by parapodium and some of them had nichd the mesh consisted by the confluence of BMSC. At the point of 48 h, some Jurkat cells had migrated to underlayer of BMSC, and Jurkat cells were nichd the mesh of BMSC like nidi. The accumulation and distribution of DNR in the Jurkat cells were not affected in the model, but the reaction of Jurkat cells to DNR were significantly inhibited.
  
  
  CONCLUSIONS
  The model of CAM-DR based on Acute lymphocyte leukemia bone marrow stromal cells was successfully built.
authors.affiliation: Hematology Department of Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China. xhchen888@yahoo.com.cn
authors.forename: Xing-hua
authors.initials: XH
authors.lastname: Chen
authors.forename: Lei
authors.initials: L
authors.lastname: Gao
authors.forename: Xi
authors.initials: X
authors.lastname: Zhang
authors.forename: Ji-gang
authors.initials: JG
authors.lastname: Wang
authors.forename: Cheng
authors.initials: C
authors.lastname: Zhang
authors.forename: Xian-gui
authors.initials: XG
authors.lastname: Peng
authors.forename: Zhong-jun
authors.initials: ZJ
authors.lastname: Li
authors.forename: Dong-feng
authors.initials: DF
authors.lastname: Zeng
authors.forename: Yao
authors.initials: Y
authors.lastname: Liu
authors.forename: Ying-jian
authors.initials: YJ
authors.lastname: Si
mesh_terms: D000293:Adolescent; D000328:Adult; D000903:Antibiotics, Antineoplastic / Q000494:pharmacology; D001854:Bone Marrow Cells / Q000473:pathology* / Q000648:ultrastructure; D002448:Cell Adhesion; D002470:Cell Survival / Q000187:drug effects; D002648:Child; D002675:Child, Preschool; D003630:Daunorubicin / Q000494:pharmacology; D019008:Drug Resistance, Neoplasm; D005260:Female; D006801:Humans; D020128:Inhibitory Concentration 50; D019169:Jurkat Cells; D008297:Male; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000097:blood / Q000473:pathology*; D017154:Stromal Cells / Q000473:pathology* / Q000648:ultrastructure; D014407:Tumor Cells, Cultured