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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Gadiparthi, Seshu Leong, Paul L. Robbins, Paul D. Johnson, Daniel E. Xi, Sichuan Watkins, Simon F. Dyer, Kevin F. Mai, Jeffrey C. Andrews, Genevieve A. Burke, Nancy A. Grandis, Jennifer Rubin |
| Description | Author Affiliation: Leong PL ( Department of Otolaryngology, University of Pittsburgh School of Medicine and University of Pittsburgh Cancer Institute, Pittsburgh, PA 15260, USA.); |
| Abstract | The transcription factor signal transducer and activator of transcription 3 (Stat3) is constitutively activated in a variety of cancers including squamous cell carcinoma of the head and neck (SCCHN). Previous investigations have demonstrated that activated Stat3 contributes to a loss of growth control and transformation. To investigate the therapeutic potential of blocking Stat3 in cancer cells, we developed a transcription factor decoy to selectively abrogate activated Stat3. The Stat3 decoy was composed of a 15-mer double-stranded oligonucleotide, which corresponded closely to the Stat3 response element within the c-fos promoter. The Stat3 decoy bound specifically to activated Stat3 and blocked binding of Stat3 to a radiolabeled Stat3 binding element. By contrast, a mutated version of the decoy that differed by only a single base pair did not bind the activated Stat3 protein. Treatment of head and neck cancer cells with the Stat3 decoy inhibited proliferation and Stat3-mediated gene expression, but did not decrease the proliferation of normal oral keratinocytes. Thus, disruption of activated Stat3 by using a transcription factor decoy approach may serve as a novel therapeutic strategy for cancers characterized by constitutive Stat3 activation. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 7 |
| Volume Number | 100 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2003-04-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Apoptosis Drug Effects Carcinoma, Squamous Cell Pathology DNA-Binding Proteins Antagonists & Inhibitors Head And Neck Neoplasms Oligodeoxyribonucleotides, Antisense Pharmacology Trans-Activators Cell Division Genetics Luciferases Metabolism Proto-Oncogene Proteins C-bcl-2 STAT3 Transcription Factor Tumor Cells, Cultured Bcl-X Protein Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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