Abstract |
Nuclear factor κB (NF-κB) is a transcription factor important for regulating innate and adaptive immunity, cellular proliferation, apoptosis, and senescence. Dysregulation of NF-κB and its upstream regulator IκB kinase (IKK) contributes to the pathogenesis of multiple inflammatory and degenerative diseases as well as cancer. An 11-amino acid peptide containing the NF-κB essential modulator (NEMO)-binding domain (NBD) derived from the C-terminus of β subunit of IKK, functions as a highly selective inhibitor of the IKK complex by disrupting the association of IKKβ and the IKKγ subunit NEMO. A structure-based pharmacophore model was developed to identify NBD mimetics by in silico screening. Two optimized lead NBD mimetics, SR12343 and SR12460, inhibited tumor necrosis factor α (TNF-α)- and lipopolysaccharide (LPS)-induced NF-κB activation by blocking the interaction between IKKβ and NEMO and suppressed LPS-induced acute pulmonary inflammation in mice. Chronic treatment of a mouse model of Duchenne muscular dystrophy (DMD) with SR12343 and SR12460 attenuated inflammatory infiltration, necrosis and muscle degeneration, demonstrating that these small-molecule NBD mimetics are potential therapeutics for inflammatory and degenerative diseases.
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Authors | Jing Zhao, Lei Zhang, Xiaodong Mu, Christelle Doebelin, William Nguyen, Callen Wallace, Daniel P Reay, Sara J McGowan, Lana Corbo, Paula R Clemens, Gabriela Mustata Wilson, Simon C Watkins, Laura A Solt, Michael D Cameron, Johnny Huard, Laura J Niedernhofer, Theodore M Kamenecka, Paul D Robbins |
Journal | PLoS biology
(PLoS Biol)
Vol. 16
Issue 6
Pg. e2004663
(06 2018)
ISSN: 1545-7885 [Electronic] United States |
PMID | 29889904
(Publication Type: Journal Article)
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Chemical References |
- IKBKG protein, human
- Lipopolysaccharides
- Tumor Necrosis Factor-alpha
- I-kappa B Kinase
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Topics |
- Animals
- Biomimetic Materials
(chemistry, pharmacology)
- Cell Line
- Female
- HEK293 Cells
- Humans
- I-kappa B Kinase
(antagonists & inhibitors, chemistry, metabolism)
- Inflammation
(drug therapy)
- Lipopolysaccharides
- Mice
- Mice, Inbred C57BL
- Muscular Dystrophy, Duchenne
(drug therapy)
- Necrosis
(drug therapy)
- Pneumonia
(drug therapy)
- Protein Domains
- RAW 264.7 Cells
- Tumor Necrosis Factor-alpha
(antagonists & inhibitors)
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