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Rapid Screening of Lipase Inhibitors in by Using Porcine Pancreatic Lipase Immobilized on Magnetic Core-Shell Metal-Organic Frameworks

Overview
Journal Molecules
Publisher MDPI
Specialty Biology
Date 2022 Jun 10
PMID 35684413
Authors
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Abstract

As for ligand fishing, the current immobilization approaches have some potential drawbacks such as the small protein loading capacity and difficult recycle process. The core-shell metal-organic frameworks composite (FeO-COOH@UiO-66-NH), which exhibited both magnetic characteristics and large specific surface area, was herein fabricated and used as magnetic support for the covalent immobilization of porcine pancreatic lipase (PPL). The resultant composite FeO-COOH@UiO-66-NH@PPL manifested a high loading capacity (247.8 mg/g) and relative activity recovery (101.5%). In addition, PPL exhibited enhanced tolerance to temperature and pH after immobilization. Then, the composite FeO-COOH@UiO-66-NH@PPL was incubated with the extract of to fish out the ligands. Eight lipase inhibitors were obtained and identified by UPLC-Q-TOF-MS/MS. The feasibility of the method was further confirmed through an in vitro inhibitory assay and molecular docking. The proposed ligand fishing technique based on FeO-COOH@UiO-66-NH@PPL provided a feasible, selective, and effective platform for discovering enzyme inhibitors from natural products.

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