1. Dietary Flavone Baicalein Combinate with Genipin Attenuates Inflammation Stimulated by Lipopolysaccharide in RAW264.7 Cells or Pseudomonas aeruginosa in Mice via Regulating the Expression and Phosphorylation of AKT.
- Author
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Zhang M, Ye L, Cheng C, Shen F, Niu L, Hou Y, and Bai G
- Subjects
- Animals, Antioxidants administration & dosage, Antioxidants pharmacology, Cholagogues and Choleretics administration & dosage, Cholagogues and Choleretics pharmacology, Diet, Drug Delivery Systems, Drug Therapy, Combination, Flavanones administration & dosage, Gene Expression Regulation drug effects, HSP90 Heat-Shock Proteins genetics, HSP90 Heat-Shock Proteins metabolism, Iridoids administration & dosage, Lipopolysaccharides toxicity, Male, Mice, Phosphorylation, Proto-Oncogene Proteins c-akt genetics, Pseudomonas aeruginosa, RAW 264.7 Cells, Random Allocation, Flavanones pharmacology, Inflammation chemically induced, Inflammation drug therapy, Iridoids pharmacology, Proto-Oncogene Proteins c-akt metabolism, Pseudomonas Infections drug therapy
- Abstract
Mounting evidence has shown that single-targeted therapy might be inadequate to achieve satisfactory effects. Thus, drug combinations are gaining attention as they can regulate multiple targets to obtain more beneficial effects. Heat shock protein 90 (HSP90) is a molecular chaperone that assists the protein assembly and folding of client proteins and maintains their stability. Interfering with the interaction between HSP90 and its client proteins by inhibiting the latter's activity may offer a new approach toward combination therapy. The HSP90 client protein AKT plays an important role in the inflammatory response syndrome caused by infections. In this study, the dietary flavone baicalein was identified as a novel inhibitor of HSP90 that targeted the N-terminal ATP binding pocket of HSP90 and hindered the chaperone cycle, resulting in AKT degradation. Combining baicalein with genipin, which was extracted from Gardenia jasminoides , could inhibit the pleckstrin homology domain of AKT, significantly increasing the anti-inflammatory effects both in vitro and in vivo. This synergistic effect was attributed to the reduction in AKT expression and phosphorylation. Thus, elucidating the mechanism underlying this effect will provide a new avenue for the clinical application and development of synergistic anti-inflammatory drugs.
- Published
- 2021
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