Natural taurine promotes apoptosis of human hepatic stellate cells in proteomics analysis.
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.
Deng
Xin
X
The Affiliated Ruikang Hospital of Guangxi Traditional Chinese Medical University, Nanning 530011, Guangxi Zhuang Autonomous Region, China. dx8848@126.com
Liang
Jian
J
Lin
Zhi-Xiu
ZX
Wu
Fa-Sheng
FS
Zhang
Ya-Ping
YP
Zhang
Zhi-Wei
ZW
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*
D020543:Proteome; D013654:Taurine
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