Abstract:
:P38α/MAPK14 is intracellular signalling regulator involved in biosynthesis of inflammatory mediator cytokines (TNF-α, IL-1, IL-6, and IL-1b), which induce the production of inflammatory proteins (iNOS, NF-kB, and COX-2). In this study, drug repurposing strategies were followed to repositioning of a series of B-RAF V600E imidazol-5-yl pyridine inhibitors to inhibit P38α kinase. A group 25 reported P38α kinase inhibitors were used to build a pharmacophore model for mapping the target compounds and proving their affinity for binding in P38α active site. Target compounds were evaluated for their potency against P38α kinase, compounds 11a and 11d were the most potent inhibitors (IC50 = 47 nM and 45 nM, respectively). In addition, compound 11d effectively inhibited the production of proinflammatory cytokinesTNF-α, 1L-6, and 1L-1β in LPS-induced RAW 264.7 macrophages with IC50 values of 78.03 nM, 17.6 µM and 82.15 nM, respectively. The target compounds were tested for their anti-inflammatory activity by detecting the reduction of Nitric oxide (NO) and prostaglandin (PGE2) production in LPS-stimulated RAW 264.7 macrophages. Compound 11d exhibited satisfied inhibitory activity of the production of PGE2 and NO with IC50 values of 0.29 µM and 0.61 µM, respectively. Molecular dynamics simulations of the most potent inhibitor 11d were carried out to illustrate its conformational stability in the binding site of P38α kinase.
journal_name
Bioorg Med Chemjournal_title
Bioorganic & medicinal chemistryauthors
Ali EMH,Abdel-Maksoud MS,Hassan RM,Mersal KI,Ammar UM,Se-In C,He-Soo H,Kim HK,Lee A,Lee KT,Oh CHdoi
10.1016/j.bmc.2020.115969subject
Has Abstractpub_date
2021-02-01 00:00:00pages
115969eissn
0968-0896issn
1464-3391pii
S0968-0896(20)30799-9journal_volume
31pub_type
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