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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Wilder, Paul T. Pierce, Adam D. Hartman, Kira G. Vitolo, Michele I. Shapiro, Paul Weber, David J. Martin, Stuart S. Fox, Jennifer M. |
| Description | Author Affiliation: Hartman KG ( From the Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201.) |
| Abstract | S100B is a prognostic marker for malignant melanoma. Increasing S100B levels are predictive of advancing disease stage, increased recurrence, and low overall survival in malignant melanoma patients. Using S100B overexpression and shRNA(S100B) knockdown studies in melanoma cell lines, elevated S100B was found to enhance cell viability and modulate MAPK signaling by binding directly to the p90 ribosomal S6 kinase (RSK). S100B-RSK complex formation was shown to be Ca(2+)-dependent and to block ERK-dependent phosphorylation of RSK, at Thr-573, in its C-terminal kinase domain. Additionally, the overexpression of S100B sequesters RSK into the cytosol and prevents it from acting on nuclear targets. Thus, elevated S100B contributes to abnormal ERK/RSK signaling and increased cell survival in malignant melanoma. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 18 |
| Volume Number | 289 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2014-05-02 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Calcium Metabolism Extracellular Signal-Regulated MAP Kinases Ribosomal Protein S6 Kinases, 90-kDa S100 Calcium Binding Protein Beta Subunit Blotting, Western Cell Line, Tumor Cell Nucleus Cell Survival Genetics Cytosol Melanoma Pathology Microscopy, Confocal Multiprotein Complexes Mutation Phosphorylation Protein Binding RNA Interference Threonine Research Support, N.I.H., Extramural Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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