Journal
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
Volume 23, Issue 7, Pages 2225-2229Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2013.01.056
Keywords
STAT3 signaling; Small-molecule inhibitors; Virtual screening; Cell viability; Antitumor activity
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Funding
- 11th Fudan University Graduates Innovation Project
- National Natural Science Foundation of China [81072525]
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Inhibition of the signal transducer and activator of transcription 3 (STAT3) signaling pathway has been considered a novel therapeutic strategy to treat human cancers that harbor aberrantly-active STAT3. In this study, a series of small molecules were identified as novel inhibitors of STAT3 signaling pathway through virtual screening. A tricyclic scaffold containing compound, 6, was identified as an inhibitor of IL-6/STAT3 signaling with an IC50 of 26.681 mu M. In addition, this compound inhibited Tyr705 phosphorylation of STAT3 and had no obvious effect on upstream tyrosine kinases. Thus, compound 6 is a potential lead structure and valuable for further drug development. (C) 2013 Elsevier Ltd. All rights reserved.
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