Tyrosine Phosphorylation Regulates H2O2Production in Lung Fibroblasts Stimulated by Transforming Growth Factor β1*
Tyrosine Phosphorylation Regulates H2O2Production in Lung Fibroblasts Stimulated by Transforming Growth Factor β1*
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酪氨酸磷酸化调节转化生长因子 β1* 刺激的肺成纤维细胞中 H2O2 的产生
DOI:
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发表时间:
1998
影响因子:
4.8
通讯作者:
B. Fanburg
中科院分区:
文献类型:
--
作者:
V. Thannickal;Kristen D. L. Aldweib;B. Fanburg
Transforming growth factor β1 (TGF-β1) is a multifunctional, profibrotic cytokine involved in cellular growth and differentiation. We have previously described a cell surface-associated H2O2-generating NADH:flavin:O2 oxidoreductase (referred to as NADH oxidase) activity in human lung fibroblasts induced by TGF-β1 (Thannickal, V. J., and Fanburg, B. L. (1995) J. Biol. Chem. 270, 30334–30338). In this study, the potential for regulation of this novel TGF-β1-activated oxidase in fibroblasts by protein tyrosine phosphorylation was examined. Immunoblots using anti-phosphotyrosine antibody demonstrated a time-dependent but delayed phosphorylation of two proteins of 115 and 103 kDa in cells stimulated with TGF-β1 (2 ng/ml). Similar to the effect on TGF-β1-induced H2O2 production, phosphorylation of these proteins was blocked by the addition of actinomycin D. The protein-tyrosine kinase inhibitors genistein and herbimycin A inhibited TGF-β1-induced protein tyrosine phosphorylation, NADH oxidase activation, and H2O2 production in a dose-dependent manner. Catalase, diphenyliodonium (an inhibitor of flavoenzymes), and suramin (an inhibitor of receptor activation, added 4 h after TGF-β1) had no effect on the induction of protein tyrosine phosphorylation. Phosphorylation of the 115- and 103-kDa proteins preceded the generation of H2O2 production and returned to control levels when H2O2 was undetectable at 48 h after TGF-β1 exposure. These results suggest that protein tyrosine phosphorylation by a nonreceptor protein-tyrosine kinase(s) regulates the activity of the TGF-β1-responsive H2O2-generating NADH oxidase in human lung fibroblasts. Additionally, this study demonstrates that TGF-β1, which binds to a serine-threonine kinase receptor, is able to induce protein tyrosine phosphorylation in a delayed manner via a signaling pathway that requires transcriptional activation.
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影响因子:
3.3
作者:
J. Sekelsky;S. Newfeld;L. Raftery;E. Chartoff;W. Gelbart
通讯作者:
J. Sekelsky;S. Newfeld;L. Raftery;E. Chartoff;W. Gelbart
DOI:
10.1016/s0021-9258(18)82362-6
发表时间:
1993-07
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
R. Davis
通讯作者:
R. Davis
影响因子:
56.9
作者:
R. Tucker;G. Shipley;H. Moses;R. W. Holley
通讯作者:
R. Tucker;G. Shipley;H. Moses;R. W. Holley
DOI:
10.1172/jci117199
发表时间:
1994-05
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
G. Stouffer;G. Owens
通讯作者:
G. Stouffer;G. Owens
DOI:
10.1073/pnas.87.24.9943
发表时间:
1990-12-01
影响因子:
11.1
作者:
STAAL, FJT;ROEDERER, M;HERZENBERG, LA
通讯作者:
HERZENBERG, LA