title: Natural taurine promotes apoptosis of human hepatic stellate cells in proteomics analysis.
abstract: OBJECTIVE
  To study the differential expression of proteins between natural taurine treated hepatic stellate cells and controls, and investigate the underlying regulatory mechanism of natural taurine in inhibiting hepatic fibrosis.
  
  
  METHODS
  A proteomic strategy combining two-dimensional gel electrophoresis and ultra-performance liquid chromatography-electrospray ionization-tandem mass spectrometry (UPLC-ESI-MS/MS) was used to study the differential expression of proteins and Western blotting was used to validate the results. Gene ontology (GO) method was utilized to analyze the functional enrichment of differentially expressed proteins. Flow cytometry was performed to compare the apoptosis rate between taurine-treated and untreated hepatic stellate cells (HSCs).
  
  
  RESULTS
  Nineteen differentially expressed proteins (11 up-regulated and 8 down-regulated) were identified by 2D/MS, and the expression profiles of GLO1 and ANXA1 were validated by Western blotting. GO analysis found that these differentially expressed proteins were enriched within biological processes such as "cellular apoptosis", "oxidation reaction" and "metabolic process" in clusters. Flow cytometric analysis showed that taurine-treated HSCs had a significantly increased apoptosis rate when compared with the control group.
  
  
  CONCLUSIONS
  Natural taurine can promote HSC apoptosis so as to inhibit hepatic fibrosis.
authors.affiliation: The Affiliated Ruikang Hospital of Guangxi Traditional Chinese Medical University, Nanning 530011, Guangxi Zhuang Autonomous Region, China. dx8848@126.com
authors.forename: Xin
authors.initials: X
authors.lastname: Deng
authors.forename: Jian
authors.initials: J
authors.lastname: Liang
authors.forename: Zhi-Xiu
authors.initials: ZX
authors.lastname: Lin
authors.forename: Fa-Sheng
authors.initials: FS
authors.lastname: Wu
authors.forename: Ya-Ping
authors.initials: YP
authors.lastname: Zhang
authors.forename: Zhi-Wei
authors.initials: ZW
authors.lastname: Zhang
mesh_terms: D017209:Apoptosis; D015153:Blotting, Western; D015180:Electrophoresis, Gel, Two-Dimensional; D005355:Fibrosis / Q000473:pathology; D005434:Flow Cytometry / Q000379:methods; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation; D055166:Hepatic Stellate Cells / Q000166:cytology*; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods; D008954:Models, Biological; D020543:Proteome / Q000032:analysis; D040901:Proteomics / Q000379:methods*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods; D013654:Taurine / Q000737:chemistry / Q000378:metabolism*
chemical_list: D020543:Proteome; D013654:Taurine
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