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A Comparative Assessment Study of Known Small-Molecule Keap1-Nrf2 Protein-Protein Interaction Inhibitors: Chemical Synthesis, Binding Properties, and Cellular Activity.

08:00 EDT 14th August 2019 | BioPortfolio

Summary of "A Comparative Assessment Study of Known Small-Molecule Keap1-Nrf2 Protein-Protein Interaction Inhibitors: Chemical Synthesis, Binding Properties, and Cellular Activity."

Inhibiting the protein-protein interaction (PPI) between the transcription factor Nrf2 and its repressor protein Keap1 has emerged as a promising strategy to target oxidative stress in diseases, including CNS disorders. Numerous non-covalent small-molecule Keap1-Nrf2 PPI inhibitors have been reported to date, but many feature suboptimal physicochemical properties for permeating the blood-brain barrier, while others contain problematic structural moieties. Here, we present the first side-by-side assessment of all reported Keap1-Nrf2 PPI inhibitor classes using fluorescence polarization (FP), thermal shift assay (TSA), and surface plasmon resonance (SPR)-and further evaluate the compounds in an NQO1 induction cell assay and in counter tests for non-specific activities. Surprisingly, half of the compounds were inactive or deviated substantially from reported activities, while we confirm the cross-assay activities for others. Through this study, we have identified the most promising Keap1-Nrf2 inhibitors that can serve as pharmacological probes or starting points for developing CNS active Keap1 inhibitors.

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This article was published in the following journal.

Name: Journal of medicinal chemistry
ISSN: 1520-4804
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Medical and Biotech [MESH] Definitions

Part of a MESSENGER RNA molecule that undergoes a conformation change upon binding a specific metabolite or other small molecule thereby regulating the messenger RNA's transcription, post-transcriptional processing, transport, translation, or stability in response to varying levels of the metabolite or other small molecule.

The study of the similarities and differences in the structures of homologous tissues across various species.

Comparison of outcomes, results, responses, etc for different techniques, therapeutic approaches or other inputs.

The comparative study of animal structure with regard to homologous organs or parts. (Stedman, 25th ed)

A small maf protein that forms dimers with NRF1 protein; NRF2 PROTEIN; and P45 NF-E2 PROTEIN. MafF complexes bind Maf recognition elements to regulate tissue-specific GENETIC TRANSCRIPTION.

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