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Research ArticleExperimental Studies

Modulation of the Constitutive Activated STAT3 Transcription Factor in Pancreatic Cancer Prevention: Effects of Indole-3-Carbinol (I3C) and Genistein

JIAN P. LIAN, BEVERLY WORD, SKEETORA TAYLOR, GEORGE J. HAMMONS and BEVERLY D. LYN-COOK
Anticancer Research January 2004, 24 (1) 133-138;
JIAN P. LIAN
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BEVERLY WORD
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SKEETORA TAYLOR
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GEORGE J. HAMMONS
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BEVERLY D. LYN-COOK
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Abstract

Background: The signal transducer and activator of transcription 3 (STAT3) is a latent transcription factor required in proliferation and differentiation. STAT3 is activated constitutively in a number of cancers. Materials and Methods: This study was conducted to assess the possible involvement of STAT3 activation in pancreatic cancer and the potential for this pathway as a target in chemopreventive strategy. Results: STAT3 was shown for the first time to be constitutively activated in human pancreatic carcinoma specimens but not in normal pancreatic tissues. Constitutively activated STAT3 was also found in pancreatic tumor cell lines (Panc-1 and MIA PaCa-2) which could be modulated by indole-3-carbinol (I3C) and genistein. At concentrations higher than 10 μM, STAT3 constitutive activation is inhibited by both agents. Induction of apoptosis by I3C was also demonstrated. Conclusion: Given its critical role in tumorigenesis, our results suggest that STAT3 activation provides an important and appropriate target for chemoprevention in pancreatic cancer treatment.

  • Received August 19, 2003.
  • Accepted October 10, 2003.
  • Copyright© 2004 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved
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Anticancer Research: 24 (1)
Anticancer Research
Vol. 24, Issue 1
January-February 2004
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Modulation of the Constitutive Activated STAT3 Transcription Factor in Pancreatic Cancer Prevention: Effects of Indole-3-Carbinol (I3C) and Genistein
JIAN P. LIAN, BEVERLY WORD, SKEETORA TAYLOR, GEORGE J. HAMMONS, BEVERLY D. LYN-COOK
Anticancer Research Jan 2004, 24 (1) 133-138;

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Modulation of the Constitutive Activated STAT3 Transcription Factor in Pancreatic Cancer Prevention: Effects of Indole-3-Carbinol (I3C) and Genistein
JIAN P. LIAN, BEVERLY WORD, SKEETORA TAYLOR, GEORGE J. HAMMONS, BEVERLY D. LYN-COOK
Anticancer Research Jan 2004, 24 (1) 133-138;
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