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Novobiocin Analogues That Inhibit the MAPK Pathway
Jessica A Hall1, Sahithi Seedarala1, Huiping Zhao1
1Department of Medicinal Chemistry, The University of Kansas , 1251 Wescoe Hall Drive, 4070 Malott Hall, Lawrence, Kansas 66045, United States.
Journal of Medicinal Chemistry
|January 9, 2016
Summary
Novel anticancer agents targeting the MAPK pathway were developed from novobiocin analogues. Compound 2 disrupts MAPK signaling without inhibiting heat shock protein 90 (Hsp90), offering a new strategy for cancer therapy.
Area of Science:
- Oncology
- Molecular Biology
- Medicinal Chemistry
Background:
- Heat shock protein 90 (Hsp90) inhibition is a promising anticancer strategy.
- Novobiocin, an Hsp90 C-terminus inhibitor, has limitations due to its high IC50 value.
- Development of novobiocin analogues has yielded compounds with improved antiproliferative activity.
Purpose of the Study:
- To investigate novobiocin analogues with potent antiproliferative activity.
- To identify compounds that disrupt MAPK signaling independently of Hsp90 inhibition.
- To explore novel scaffolds for anticancer agent development.
Main Methods:
- Synthesis and screening of novobiocin analogues.
- Assays to evaluate Hsp90 inhibitory activity.
- Analysis of MAPK pathway signaling disruption.
Main Results:
- Novobiocin analogues with potent antiproliferative activity were identified.
- Compound 2, a novobiocin analogue, disrupts MAPK signaling without inhibiting Hsp90.
- Structural modifications segregated Hsp90 inhibition from MAPK signaling disruption.
Conclusions:
- Compound 2 represents a novel scaffold for disrupting MAPK pathway signaling.
- These findings offer a new direction for developing targeted anticancer agents.
- Further development of Compound 2 analogues may lead to effective chemotherapeutics.
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