Dissemin is shutting down on January 1st, 2025

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Elsevier, Bioorganic and Medicinal Chemistry, 8(14), p. 2487-2497, 2006

DOI: 10.1016/j.bmc.2005.11.027

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Sesquiterpene lactones as inhibitors of IL-8 expression in HeLa cells

This paper is available in a repository.
This paper is available in a repository.

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Abstract

Twenty-four structurally different SLs were studied for their inhibition on IL-8 production in HeLa229 cells and different IC50-values were obtained. QSAR analyses revealed that the alpha-methylene-gamma-lactone and the presence and reactivity of a second reaction center, expressed by LUMO2, are the most important descriptors for IL-8. Using two SLs as examples, we demonstrated that SLs prevent DNA binding of AP-1, which has binding sites in the IL-8 promoter together with NF-kappaB and C/EBP, and that this is probably due to directly targeting AP-1. p38 MAPK, which plays a role in AP-1 activation as well as in IL-8 regulation, was not influenced by SLs. These data show that NF-kappaB and AP-1, and consequently IL-8 may be interesting targets in antiinflammation research and that the small molecules of SLs may be powerful candidates with promising properties for therapeutic modulation of the inflammatory response.