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Advances in Brief |
Immunology Program [G. N., H. Y.], Clinical Investigations Program [R. H., D. C., W. D.], and Molecular Oncology Program [R. C-F., R. J.], H. Lee Moffitt Cancer Center and Research Institute, and Departments of Microbiology and Immunology [G. N., R. H., H. Y.], Surgery [R. H., M. J.], Pathology [R. C-F., D. C.], Medicine [W. D.], and Biochemistry and Molecular Biology [R. J.], University of South Florida College of Medicine, Tampa, Florida 33612
Whereas signal transducers and activators of transcription were originally discovered as mediators of normal cytokine signaling, constitutive activation of certain signal transducer and activator of transcription proteins, including Stat3, has been found in increasing numbers of human cancers. Recently, a causal role for Stat3 activation in oncogenesis has been demonstrated, suggesting that Stat3 represents a novel target for cancer therapy. We report here that in vitro expression of a Stat3 variant with dominant-negative properties, Stat3
, induced cell death in murine B16 melanoma cells that harbored activated Stat3. By contrast, expression of Stat3
had no effect on normal fibroblasts or the Stat3-negative murine tumor MethA, suggesting that only tumor cells with activated Stat3 have become dependent on this pathway for survival. Significantly, gene therapy by electroinjection of the Stat3
expression vector into preexisting B16 tumors caused inhibition of tumor growth as well as tumor regression. This Stat3
-induced antitumor effect is associated with apoptosis of the B16 tumor cells in vivo. These findings demonstrate for the first time that interfering with Stat3 signaling induces potent antitumor activity in vivo and thus identify Stat3 as a potential molecular target for therapy of human cancers harboring activated Stat3.
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G. Waris, J. Turkson, T. Hassanein, and A. Siddiqui Hepatitis C Virus (HCV) Constitutively Activates STAT-3 via Oxidative Stress: Role of STAT-3 in HCV Replication J. Virol., February 1, 2005; 79(3): 1569 - 1580. [Abstract] [Full Text] [PDF] |
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K. Nagel-Wolfrum, C. Buerger, I. Wittig, K. Butz, F. Hoppe-Seyler, and B. Groner The Interaction of Specific Peptide Aptamers With the DNA Binding Domain and the Dimerization Domain of the Transcription Factor Stat3 Inhibits Transactivation and Induces Apoptosis in Tumor Cells Mol. Cancer Res., March 1, 2004; 2(3): 170 - 182. [Abstract] [Full Text] [PDF] |
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C. Richardson, C. Fielding, M. Rowe, and P. Brennan Epstein-Barr Virus Regulates STAT1 through Latent Membrane Protein 1 J. Virol., April 1, 2003; 77(7): 4439 - 4443. [Abstract] [Full Text] [PDF] |
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P. L. Leong, G. A. Andrews, D. E. Johnson, K. F. Dyer, S. Xi, J. C. Mai, P. D. Robbins, S. Gadiparthi, N. A. Burke, S. F. Watkins, et al. Targeted inhibition of Stat3 with a decoy oligonucleotide abrogates head and neck cancer cell growth PNAS, April 1, 2003; 100(7): 4138 - 4143. [Abstract] [Full Text] [PDF] |
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M. A. Blaskovich, J. Sun, A. Cantor, J. Turkson, R. Jove, and S. M. Sebti Discovery of JSI-124 (Cucurbitacin I), a Selective Janus Kinase/Signal Transducer and Activator of Transcription 3 Signaling Pathway Inhibitor with Potent Antitumor Activity against Human and Murine Cancer Cells in Mice Cancer Res., March 15, 2003; 63(6): 1270 - 1279. [Abstract] [Full Text] [PDF] |
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S. Alas and B. Bonavida Inhibition of Constitutive STAT3 Activity Sensitizes Resistant Non-Hodgkin's Lymphoma and Multiple Myeloma to Chemotherapeutic Drug-mediated Apoptosis Clin. Cancer Res., January 1, 2003; 9(1): 316 - 326. [Abstract] [Full Text] [PDF] |
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H. Ben-Bassat, Z. Hartzstark, R. Levitzki, B. Y. Klein, Z. Shlomai, A. Gazit, and A. Levitzki Tyrosine Kinase Inhibitors Suppress the Growth of Non-Hodgkin B Lymphomas J. Pharmacol. Exp. Ther., October 1, 2002; 303(1): 163 - 171. [Abstract] [Full Text] [PDF] |
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R. Buettner, L. B. Mora, and R. Jove Activated STAT Signaling in Human Tumors Provides Novel Molecular Targets for Therapeutic Intervention Clin. Cancer Res., April 1, 2002; 8(4): 945 - 954. [Abstract] [Full Text] [PDF] |
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M. M. Oshiro, T. H. Landowski, R. Catlett-Falcone, L. A. Hazlehurst, M. Huang, R. Jove, and W. S. Dalton Inhibition of JAK Kinase Activity Enhances Fas-mediated Apoptosis but Reduces Cytotoxic Activity of Topoisomerase II Inhibitors in U266 Myeloma Cells Clin. Cancer Res., December 1, 2001; 7(12): 4262 - 4271. [Abstract] [Full Text] [PDF] |
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M. Yanagita, H. Arai, T. Nakano, K. Ohashi, K. Mizuno, A. Fukatsu, T. Doi, and T. Kita Gas6 Induces Mesangial Cell Proliferation via Latent Transcription Factor STAT3 J. Biol. Chem., November 2, 2001; 276(45): 42364 - 42369. [Abstract] [Full Text] [PDF] |
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Z.-Q. Ning, J. Li, and R. J. Arceci Signal transducer and activator of transcription 3 activation is required for Asp816 mutant c-Kit-mediated cytokine-independent survival and proliferation in human leukemia cells Blood, June 1, 2001; 97(11): 3559 - 3567. [Abstract] [Full Text] [PDF] |
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G. Niu, K. H. Shain, M. Huang, R. Ravi, A. Bedi, W. S. Dalton, R. Jove, and H. Yu Overexpression of a Dominant-Negative Signal Transducer and Activator of Transcription 3 Variant in Tumor Cells Leads to Production of SolubleFactors That Induce Apoptosis and Cell Cycle Arrest Cancer Res., April 1, 2001; 61(8): 3276 - 3280. [Abstract] [Full Text] |
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J.-B. Demoulin, J. Van Snick, and J.-C. Renauld Interleukin-9 (IL-9) Induces Cell Growth Arrest Associated with Sustained Signal Transducer and Activator of Transcription Activation in Lymphoma Cells Overexpressing the IL-9 Receptor Cell Growth Differ., March 1, 2001; 12(3): 169 - 174. [Abstract] [Full Text] |
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J. G. Turner, A. L. Rakhmilevich, L. Burdelya, Z. Neal, M. Imboden, P. M. Sondel, and H. Yu Anti-CD40 Antibody Induces Antitumor and Antimetastatic Effects: The Role of NK Cells J. Immunol., January 1, 2001; 166(1): 89 - 94. [Abstract] [Full Text] [PDF] |
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C. L. Campbell, Z. Jiang, D. M. F. Savarese, and T. M. Savarese Increased Expression of the Interleukin-11 Receptor and Evidence of STAT3 Activation in Prostate Carcinoma Am. J. Pathol., January 1, 2001; 158(1): 25 - 32. [Abstract] [Full Text] [PDF] |
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J. R. Grandis, S. D. Drenning, Q. Zeng, S. C. Watkins, M. F. Melhem, S. Endo, D. E. Johnson, L. Huang, Y. He, and J. D. Kim Constitutive activation of Stat3 signaling abrogates apoptosis in squamous cell carcinogenesis in vivo PNAS, April 11, 2000; 97(8): 4227 - 4232. [Abstract] [Full Text] [PDF] |
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O. K. Park, L. K. Schaefer, W. Wang, and T. S. Schaefer Dimer Stability as a Determinant of Differential DNA Binding Activity of Stat3 Isoforms J. Biol. Chem., October 6, 2000; 275(41): 32244 - 32249. [Abstract] [Full Text] [PDF] |
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J. Turkson, D. Ryan, J. S. Kim, Y. Zhang, Z. Chen, E. Haura, A. Laudano, S. Sebti, A. D. Hamilton, and R. Jove Phosphotyrosyl Peptides Block Stat3-mediated DNA Binding Activity, Gene Regulation, and Cell Transformation J. Biol. Chem., November 21, 2001; 276(48): 45443 - 45455. [Abstract] [Full Text] [PDF] |
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Y. Shen, G. Devgan, J. E. Darnell Jr., and J. F. Bromberg Constitutively activated Stat3 protects fibroblasts from serum withdrawal and UV-induced apoptosis and antagonizes the proapoptotic effects of activated Stat1 PNAS, February 13, 2001; 98(4): 1543 - 1548. [Abstract] [Full Text] [PDF] |
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T. Bowman, M. A. Broome, D. Sinibaldi, W. Wharton, W. J. Pledger, J. M. Sedivy, R. Irby, T. Yeatman, S. A. Courtneidge, and R. Jove Stat3-mediated Myc expression is required for Src transformation and PDGF-induced mitogenesis PNAS, June 19, 2001; 98(13): 7319 - 7324. [Abstract] [Full Text] [PDF] |
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