|
1
|
Su X, Ramírez-Escudero M, Sun F, van den Dikkenberg JB, van Steenbergen MJ, Pieters RJ, Janssen BJC, van Hasselt PM, Hennink WE, van Nostrum CF. Internalization and Transport of PEGylated Lipid-Based Mixed Micelles across Caco-2 Cells Mediated by Scavenger Receptor B1. Pharmaceutics 2021; 13:2022. [PMID: 34959304 PMCID: PMC8703698 DOI: 10.3390/pharmaceutics13122022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/12/2021] [Accepted: 11/17/2021] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to get insight into the internalization and transport of PEGylat-ed mixed micelles loaded by vitamin K, as mediated by Scavenger Receptor B1 (SR-B1) that is abundantly expressed by intestinal epithelium cells as well as by differentiated Caco-2 cells. Inhibition of SR-B1 reduced endocytosis and transport of vitamin-K-loaded 0%, 30% and 50% PEGylated mixed micelles and decreased colocalization of the micelles with SR-B1. Confocal fluorescence microscopy, fluorescence-activated cell sorting (FACS) analysis, and surface plasmon resonance (SPR) were used to study the interaction between the mixed micelles of different compositions (varying vitamin K loading and PEG content) and SR-B1. Interaction of PEGylated micelles was independent of the vitamin K content, indicating that the PEG shell prevented vitamin K exposure at the surface of the micelles and binding with the receptor and that the PEG took over the micelles' ability to bind to the receptor. Molecular docking calculations corroborated the dual binding of both vita-min K and PEG with the binding domain of SR-B1. In conclusion, the improved colloidal stability of PEGylated mixed micelles did not compromise their cellular uptake and transport due to the affinity of PEG for SR-B1. SR-B1 is able to interact with PEGylated nanoparticles and mediates their subsequent internalization and transport.
Collapse
Affiliation(s)
- Xiangjie Su
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands; (X.S.); (F.S.); (J.B.v.d.D.); (M.J.v.S.); (W.E.H.)
| | - Mercedes Ramírez-Escudero
- Structural Biochemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands; (M.R.-E.); (B.J.C.J.)
| | - Feilong Sun
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands; (X.S.); (F.S.); (J.B.v.d.D.); (M.J.v.S.); (W.E.H.)
| | - Joep B. van den Dikkenberg
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands; (X.S.); (F.S.); (J.B.v.d.D.); (M.J.v.S.); (W.E.H.)
| | - Mies J. van Steenbergen
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands; (X.S.); (F.S.); (J.B.v.d.D.); (M.J.v.S.); (W.E.H.)
| | - Roland J. Pieters
- Department of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands;
| | - Bert J. C. Janssen
- Structural Biochemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands; (M.R.-E.); (B.J.C.J.)
| | - Peter M. van Hasselt
- Department of Pediatrics, Wilhelmina Children’s Hospital, University Medical Center Utrecht, 3584 EA Utrecht, The Netherlands;
| | - Wim E. Hennink
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands; (X.S.); (F.S.); (J.B.v.d.D.); (M.J.v.S.); (W.E.H.)
| | - Cornelus F. van Nostrum
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands; (X.S.); (F.S.); (J.B.v.d.D.); (M.J.v.S.); (W.E.H.)
| |
Collapse
|