title: [Effect of Recombinant Adenovirus AdE-SH2-Caspase 8 on the Apoptosis of Imatinib-resistant K562/G01 Cell Line].
abstract: OBJECTIVE
  To investigate the effect of SH2-Caspase 8 fusion protein expressed by recombinant adenovirus AdE-SH2-Caspase8-HA-GFP (SC) on the apoptosis of K562/G01 cell line, which is a BCR/ABL positive chronic myeloid leukemia cell line and resistant to imatinib.
  
  
  METHODS
  The K562/G01 cell line was infected with AdE-SH2-Caspase 8-HA-GFP adenovirus (SC), then the cells were divided into 3 groups: AdE-SH2m-Caspase 8-HA-GFP (SmC) group, AdE-GFP (CMV) group and PBS group as control. The infection efficiency was observed under fluorescent microscopy and by flow cytometry. The expression of fusion protein SH2-Caspase 8-HA was measured by Western blot. The morphology of the cells detected by Wright's staining. The apoptosis of the cells were detected by flow cytometry and DNA ladder. The expression of Caspase 3 and PARP were detected by Western blot.
  
  
  RESULTS
  The infection efficiency of SC on K562/G01 cells was high which was confirmed by fluorescent microscopy and FCM. SH2-Caspase 8-HA fusion protein were expressed correctly in K562/G01 cells. After treatment with SC the apoptosis of K562/G01 cells could be observed by microscopy. The result of FCM showed that early apoptosis of K562/G01 cells increased significantly as compared with control groups (P < 0.05). DNA ladder showed that the classic DNA ladders appeared in K562/G01 cells after treatment with SC. The wester blot detection showed that the expression level of apoptosis-related protein Caspase 3 and PARP increased.
  
  
  CONCLUSIONS
  The recombinant adenovirus SC expressing SH2-Caspase 8 fusion protein can induces the apoptosis of K562/G01 cells.
authors: College of Laboratorial Medicine, Hunan University of Medicine, Huaihua 418000, Hunan Province, China.|Key Laboratory of Clinical Examination and Medical Diagnostics, Ministry of Education, College of Laboratorial Medicine, Chongqing Medical University, Chongqing 400016, China.
authors: Lin
authors: L
authors: Wang
authors: College of Laboratorial Medicine, Hunan University of Medicine, Huaihua 418000, Hunan Province, China.
authors: Chang
authors: C
authors: Fei
authors: Key Laboratory of Clinical Examination and Medical Diagnostics, Ministry of Education, College of Laboratorial Medicine, Chongqing Medical University, Chongqing 400016, China.
authors: Zheng-Lan
authors: ZL
authors: Huang
authors: Key Laboratory of Clinical Examination and Medical Diagnostics, Ministry of Education, College of Laboratorial Medicine, Chongqing Medical University, Chongqing 400016, China.
authors: Hui
authors: H
authors: Li
authors: Key Laboratory of Clinical Examination and Medical Diagnostics, Ministry of Education, College of Laboratorial Medicine, Chongqing Medical University, Chongqing 400016, China.
authors: Zhang-Lin
authors: ZL
authors: Liu
authors: Key Laboratory of Clinical Examination and Medical Diagnostics, Ministry of Education, College of Laboratorial Medicine, Chongqing Medical University, Chongqing 400016, China. E-mail: fengwIcqmu@sina.com.
authors: Wen-Li
authors: WL
authors: Feng
mesh_terms: D000256:Adenoviridae; D017209:Apoptosis; D053181:Caspase 8; D045744:Cell Line, Tumor; D049109:Cell Proliferation; D019008:Drug Resistance, Neoplasm; D006801:Humans; D000068877:Imatinib Mesylate; D020014:K562 Cells; D015464:Leukemia, Myelogenous, Chronic, BCR-ABL Positive
chemical_list: D000068877:Imatinib Mesylate; D053181:Caspase 8