title: [Proteomic analysis of mitochondrial proteins in hydroxycamptothecin-treated SMMC-7721 cells].
abstract: OBJECTIVE
  To investigate the differentially expressed mitochondrial proteins in hydroxycamptothecin (HCPT)-treated SMMC-7721 cells by comparative proteomic analysis.
  
  
  METHODS
  Apoptosis of SMMC-7721 cells were induced by using HCPT and their mitochondria were isolated with a mitochondria isolation kit for cultured cells. Three different solubility protein fractions were extracted with ReadyPrep Sequential Extraction Kit and were separated by two-dimensional gel electrophoresis (2-DE). PDQuest software was used to differentiate mitochondrial proteins between control cells and HCPT-treated cells. Matrix assisted laser desorption/ionization time of flying mass spectrometry (MALDI-TOF-MS) was used to identify some of the different proteins.
  
  
  RESULTS
  Highly purified mitochondria and high resolution 2-DE patterns of the proteins were obtained. Forty-four mitochondrial protein spots from the HCPT-treated cells showed different expressions compared to those of the control cells. Twenty of the different protein spots were analyzed by MALDI-TOF-MS.
  
  
  CONCLUSIONS
  Differently expressed mitochondrial proteins in HCPT-treated cells and control cells were obtained in this study. This will be of help to understand the mechanism by which HCPT induces cell apoptosis.
authors: Faculty of Laboratory Medicine, Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Chongqing University of Medical Sciences, Chongqing 400016, China.
authors: Yu-rong
authors: YR
authors: Fu
authors: Zheng-jun
authors: ZJ
authors: Yi
authors: Yu-rong
authors: YR
authors: Yan
authors: Zong-yin
authors: ZY
authors: Qiu
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000494:pharmacology*; D002166:Camptothecin / Q000031:analogs & derivatives* / Q000494:pharmacology; D045744:Cell Line, Tumor; D006801:Humans; D008564:Membrane Potentials / Q000187:drug effects*; D024101:Mitochondrial Proteins / Q000378:metabolism*; D040901:Proteomics
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D024101:Mitochondrial Proteins; C527042:hydroxycamptothecinum; D002166:Camptothecin