The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.
Involvement of Src and Epidermal Growth Factor Receptor in the Signal-transducing Function of Na+/K+-ATPase
Open accessAbstract
Nontoxic concentrations of ouabain, causing partial inhibition of the cardiac myocyte Na(+)/K(+)-ATPase, induce hypertrophy and several growth-related genes through signal pathways that include the activation of Ras and p42/44 mitogen-activated protein kinase (MAPK). The aim of this work was to examine the ouabain-induced events upstream of the Ras/MAPK cascade. Treatment of myocytes with genistein antagonized ouabain-induced activation of the MAPK, suggesting that protein tyrosine phosphorylation has a role. Tyrosine phosphorylation of several myocyte proteins was increased rapidly upon cell exposure to ouabain. Lowering of extracellular K(+) had a similar ouabain-like effect. Ouabain also increased protein tyrosine phosphorylation in A7r5, HeLa, and L929 cells. In cardiac myocytes and A7r5 cells, herbimycin A antagonized the ouabain-induced increase in protein tyrosine phosphorylation and MAPK activation. In both cell types, ouabain stimulated Src kinase activity, Src translocation to the Triton-insoluble fraction, Src association with the epidermal growth factor receptor, and the tyrosine phosphorylation of this receptor on site(s) other than its major autophosphorylation site, Tyr(1173). The findings suggest that (a) the ouabain-induced activation of Src and the Src-induced phosphorylation of the growth factor receptor provide the scaffolding for the recruitment of adaptor proteins and Ras and the activation of Ras/MAPK cascade; and (b) the activation of such pathways may be a common feature of the signal-transducing function of Na(+)/K(+)-ATPase in most cells.
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Cites
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Cited by
Reactive Oxygen Species-Induced Activation of the MAP Kinase Signaling Pathways
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Novel therapeutic applications of cardiac glycosides
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Cardiotonic steroids on the road to anti-cancer therapy
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Digitalis-Induced Signaling by Na+/K+-ATPase in Human Breast Cancer Cells
Kometiani, P., Liu, L., & Askari, A. (2005) · Molecular Pharmacology · doi:10.1124/mol.104.007302 · Cited by 208
Metadata
- Authors
- Haas, M., Askari, A., & Xie, Z.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 2000-09
- Volume
- 275
- Issue
- 36
- Pages
- 27832-27837
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W2162369109
- Cited by
- 363
- References
- 26
- FWCI
- 5.18
- Type
- journal article
- Language
- en
- Open access
- hybrid
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