Inhibition of IkB kinase and NF-kappaB by a novel synthetic compound SK 2009
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Updated: Jun 18, 2026

Kinase Inhibitor Screening In Self-assembled Human Protein Microarrays
Published on: October 23, 2019
Ravi Kumar Anchoori1, Kuzhuvelil B Harikumar, Venkateswara Rao Batchu
1Division of Chemical Therapeutics, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD, USA.
Abstract:
The NF-kappaB family of transcription factors plays an important role in determining cell survival during immune, inflammatory, and stress responses. NF-kappaB activity is frequently deregulated in human cancers and is implicated in the resistance of tumor cells to diverse anticancer agents. We studied the effects of novel analogs of precursors of the natural product simplactone (A) on the activity of IkB kinase and NF-kappaB. Screening of six compounds for the ability to inhibit TNF-induced NF-kappaB activity revealed that compound SK2009 was the most potent of these compounds in suppressing NF-kappaB activation in KBM-5 leukemic cells. Further characterization of SK2009 indicates that this newly synthesized molecule can suppress TNF-induced IkappaBalpha kinase activation and inhibit the expression of three NF-kappaB-dependent gene products, cyclin D1, Bcl-2, and VEGF, in these cells.
Insights
Novel compound SK2009 effectively inhibits nuclear factor-kappa B (NF-kappaB) activation in leukemic cells. This finding suggests SK2009
Area of Science:
- Molecular Biology
- Cancer Research
- Immunology
Background:
- Nuclear factor-kappa B (NF-kappaB) is crucial for cell survival in immune and inflammatory responses.
- Deregulated NF-kappaB activity is common in human cancers, contributing to treatment resistance.
- Simplactone analogs are being investigated for their potential therapeutic effects.
Purpose of the Study:
- To evaluate novel simplactone analogs for their ability to inhibit IkB kinase and NF-kappaB activity.
- To identify potent inhibitors of NF-kappaB activation in cancer cells.
Main Methods:
- Screening of six novel compounds for inhibition of tumor necrosis factor (TNF)-induced NF-kappaB activity.
- Characterization of the most potent compound, SK2009, in KBM-5 leukemic cells.
- Assessment of SK2009's effects on IkappaBalpha kinase activation and NF-kappaB-dependent gene expression.
Main Results:
- Compound SK2009 demonstrated the highest potency in suppressing TNF-induced NF-kappaB activation in KBM-5 leukemic cells.
- SK2009 was found to suppress TNF-induced IkappaBalpha kinase activation.
- SK2009 inhibited the expression of NF-kappaB-dependent genes: cyclin D1, Bcl-2, and VEGF.
Conclusions:
- SK2009 is a potent inhibitor of NF-kappaB signaling.
- The findings suggest SK2009's potential as an anticancer agent by targeting NF-kappaB pathways.
- Further research into SK2009 is warranted for its therapeutic application in cancers with deregulated NF-kappaB.
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