title: Taurine and guanidinoethanesulfonic acid (GES) differentially affects the expression and phosphorylation of cellular proteins in C6 glial cells.
abstract: Effects of taurine and guanidinoethanesulfonic acid (GES), a taurine transport inhibitor, on the expression and phosphorylation of cellular proteins in C6 glial cells were examined using two-dimensional (2-D) gel electrophoresis and 2-D immunoblots. 2-D gels stained with Coomassie Blue or SYPRO Ruby showed differential distribution patterns of cellular proteins in the control, taurine-supplemented and GES-supplemented cells. 2-D immunoblot analysis using the anti-phosphotyrosine antibody recognized only few immuno-reactive proteins in all three samples, and their distribution patterns were different. On the other hand, 2-D immunoblot analysis using the anti-phosphothreonine antibody recognized many immuno-reactive proteins with distinctly different distribution patterns in the control, taurine-supplemented and GES-supplemented cells. In GES-supplemented cells, the relative number of the anti-phosphotyrosine immuno-reactive protein spots increased modestly, whereas the relative number of the anti-phosphothreonine immuno-reactive protein spots decreased markedly than those in the control and taurine-supplemented cells.
authors.affiliation: BBTech Inc., 11 Back River Drive, Dartmouth, MA, USA. h202428@hotmail.com
authors.forename: Hemanta K
authors.initials: HK
authors.lastname: Sarkar
authors.forename: Thanh T
authors.initials: TT
authors.lastname: Tran
authors.forename: Rao
authors.initials: R
authors.lastname: Papineni
mesh_terms: D002460:Cell Line; D015180:Electrophoresis, Gel, Two-Dimensional; D005786:Gene Expression Regulation / Q000187:drug effects*; D010766:Phosphorylation; D011506:Proteins / Q000378:metabolism*; D013654:Taurine / Q000031:analogs & derivatives* / Q000494:pharmacology*
chemical_list: D011506:Proteins; D013654:Taurine; C009558:taurocyamine