| Inhibition of the NF-κB signaling pathway by the curcumin analog, 3,5-Bis(2-pyridinylmethylidene)-4-piperidone (EF31): Anti-inflammatory and anti-cancer properties. | |
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MedLine Citation:
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PMID: 22197802 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Nuclear factor kappa B (NF-κB) is a key signaling molecule in the elaboration of the inflammatory response. Data indicate that curcumin, a natural ingredient of the curry spice turmeric, acts as a NF-κB inhibitor and exhibits both anti-inflammatory and anti-cancer properties. Curcumin analogs with enhanced activity on the NF-κB and other inflammatory signaling pathways have been developed including the synthetic monoketone compound termed 3,5-Bis(2-fluorobenzylidene)-4-piperidone (EF24). 3,5-Bis(2-pyridinylmethylidene)-4-piperidone (EF31) is a structurally-related curcumin analog whose potency for NF-κB inhibition has yet to be determined. To examine the activity of EF31 compared to EF24 and curcumin, mouse RAW264.7 macrophages were treated with EF31, EF24, curcumin (1-100μM) or vehicle (DMSO 1%) for 1h. NF-κB pathway activity was assessed following treatment with lipopolysaccharide (LPS) (1μg/mL). EF31 (IC(50)~5μM) exhibited significantly more potent inhibition of LPS-induced NF-κB DNA binding compared to both EF24 (IC(50)~35μM) and curcumin (IC(50) >50μM). In addition, EF31 exhibited significantly greater inhibition of NF-κB nuclear translocation as well as the induction of downstream inflammatory mediators including pro-inflammatory cytokine mRNA and protein (tumor necrosis factor-α, interleukin-1β, and interleukin-6). Regarding the mechanism of these effects on NF-κB activity, EF31 (IC(50)~1.92μM) exhibited significantly greater inhibition of IκB kinase β compared to EF24 (IC(50)~131μM). Finally, EF31 demonstrated potent toxicity in NF-κB-dependent cancer cell lines while having minimal and reversible toxicity in RAW264.7 macrophages. These data indicate that EF31 is a more potent inhibitor of NF-κB activity than either EF24 or curcumin while exhibiting both anti-inflammatory and anticancer activities. Thus, EF31 represents a promising curcumin analog for further therapeutic development. |
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Authors:
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Anlys Olivera; Terry W Moore; Fang Hu; Andrew P Brown; Aiming Sun; Dennis C Liotta; James P Snyder; Younghyoun Yoon; Hyunsuk Shim; Adam I Marcus; Andrew H Miller; Thaddeus W W Pace |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-22 |
Journal Detail:
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Title: International immunopharmacology Volume: - ISSN: 1878-1705 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100965259 Medline TA: Int Immunopharmacol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011. Published by Elsevier B.V. |
Affiliation:
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Department of Psychiatry and Behavioral Sciences, Emory University, 1365 Clifton Road, Atlanta, GA 30322, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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