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Makarova K, Sajkowska-Kozielewicz JJ, Zawada K, Olchowik-Grabarek E, Ciach MA, Gogolewski K, Dobros N, Ciechowicz P, Freichels H, Gambin A. Harvest time affects antioxidant capacity, total polyphenol and flavonoid content of Polish St John's wort's (Hypericum perforatum L.) flowers. Sci Rep 2021; 11:3989. [PMID: 33597594 PMCID: PMC7889936 DOI: 10.1038/s41598-021-83409-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 02/02/2021] [Indexed: 11/08/2022] Open
Abstract
The polyphenol content and antioxidant capacity of hyperforin and hypericin-standardized H. perforatum L. extracts may vary due to the harvest time. In this work, ethanol and ethanol-water extracts of air-dried and lyophilized flowers of H. perforatum L., collected throughout a vegetation season in central Poland, were studied. Air-dried flowers extracts had higher polyphenol (371 mg GAE/g) and flavonoid (160 mg CAE/g) content, DPPH radical scavenging (1672 mg DPPH/g), ORAC (5214 µmol TE/g) and FRAP (2.54 mmol Fe2+/g) than lyophilized flowers extracts (238 mg GAE/g, 107 mg CAE/g, 1287 mg DPPH/g, 3313 µmol TE/g and 0.31 mmol Fe2+/g, respectively). Principal component analysis showed that the collection date influenced the flavonoid and polyphenol contents and FRAP of ethanol extracts, and DPPH and ORAC values of ethanol-water extracts. The ethanol extracts with the highest polyphenol and flavonoid content protected human erythrocytes against bisphenol A-induced damage. Both high field and benchtop NMR spectra of selected extracts, revealed differences in composition caused by extraction solvent and raw material collection date. Moreover, we have shown that benchtop NMR can be used to detect the compositional variation of extracts if the assignment of signals is done previously.
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Affiliation(s)
- Katerina Makarova
- Department of Physical Chemistry, Chair of Physical Pharmacy and Bioanalysis, Faculty of Pharmacy With Laboratory Medicine Division, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland.
| | - Joanna J Sajkowska-Kozielewicz
- Department of Physical Chemistry, Chair of Physical Pharmacy and Bioanalysis, Faculty of Pharmacy With Laboratory Medicine Division, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
| | - Katarzyna Zawada
- Department of Physical Chemistry, Chair of Physical Pharmacy and Bioanalysis, Faculty of Pharmacy With Laboratory Medicine Division, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
| | - Ewa Olchowik-Grabarek
- Laboratory of Molecular Biophysics, Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, Ciolkowskiego 1J, 15-245, Bialystok, Poland
| | - Michał Aleksander Ciach
- Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Stefana Banacha 2, 02-097, Warszawa, Poland
- Centre for Statistics, Hasselt University, Diepenbeek, 3590, Limburg, Belgium
| | - Krzysztof Gogolewski
- Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Stefana Banacha 2, 02-097, Warszawa, Poland
| | - Natalia Dobros
- Department of Physical Chemistry, Chair of Physical Pharmacy and Bioanalysis, Faculty of Pharmacy With Laboratory Medicine Division, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
| | - Paulina Ciechowicz
- Department of Physical Chemistry, Chair of Physical Pharmacy and Bioanalysis, Faculty of Pharmacy With Laboratory Medicine Division, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
| | | | - Anna Gambin
- Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Stefana Banacha 2, 02-097, Warszawa, Poland
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Freichels H, Wagner M, Okwieka P, Meyer RG, Mailänder V, Landfester K, Musyanovych A. (Oligo)mannose functionalized hydroxyethyl starch nanocapsules: en route to drug delivery systems with targeting properties. J Mater Chem B 2013; 1:4338-4348. [DOI: 10.1039/c3tb20138d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Freichels H, Alaimo D, Auzély-Velty R, Jérôme C. α-Acetal, ω-Alkyne Poly(ethylene oxide) as a Versatile Building Block for the Synthesis of Glycoconjugated Graft-Copolymers Suited for Targeted Drug Delivery. Bioconjug Chem 2012; 23:1740-52. [DOI: 10.1021/bc200650n] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hélène Freichels
- Center for Education and Research
on Macromolcules, University of Liège, B6a Sart-Tilman, 4000 Liège, Belgium
| | - David Alaimo
- Center for Education and Research
on Macromolcules, University of Liège, B6a Sart-Tilman, 4000 Liège, Belgium
| | - Rachel Auzély-Velty
- Centre de Recherches sur les
Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble cedex 9, France (affiliated with Université
Joseph Fourier, and member of the Institut de Chimie Moléculaire
de Grenoble)
| | - Christine Jérôme
- Center for Education and Research
on Macromolcules, University of Liège, B6a Sart-Tilman, 4000 Liège, Belgium
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Freichels H, Pourcelle V, Auzély-Velty R, Marchand-Brynaert J, Jérôme C. Synthesis of poly(lactide-co-glycolide-co-ε-caprolactone)-graft-mannosylated poly(ethylene oxide) copolymers by combination of "clip" and "click" chemistries. Biomacromolecules 2012; 13:760-8. [PMID: 22329463 DOI: 10.1021/bm201690w] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Poly(lactide-co-glycolide) (PLGA) is extensively used in pharmaceutical applications, for example, in targeted drug delivery, because of biocompatibility and degradation rate, which is easily tuned by the copolymer composition. Nevertheless, synthesis of sugar-labeled amphiphilic copolymers with a PLGA backbone is quite a challenge because of high sensitivity to hydrolytic degradation. This Article reports on the synthesis of a new amphiphilic copolymer of PLGA grafted by mannosylated poly(ethylene oxide) (PEO). A novel building block, that is, α-methoxy-ω-alkyne PEO-clip-N-hydroxysuccinimide (NHS) ester, was prepared on purpose by photoreaction of a diazirine containing molecular clip. This PEO block was mannosylated by reaction of the NHS ester groups with an aminated sugar, that is, 2-aminoethyl-α-d-mannopyroside. Then, the alkyne ω-end-group of PEO was involved in a copper alkyne- azide coupling (CuAAC) with the pendent azides of the aliphatic copolyester. The targeted mannose-labeled poly(lactide-co-glycolide-co-ε-caprolactone)-graft-poly(ethylene oxide) copolymer was accordingly formed. Copolymerization of d,l-lactide and glycolide with α-chloro-ε-caprolactone, followed by substitution of chlorides by azides provided the azido-functional PLGA backbone. Finally, micelles of the amphiphilic mannosylated graft copolymer were prepared in water, and their interaction with Concanavalin A (ConA), a glyco-receptor protein, was studied by quartz crystal microbalance. This study concluded to the prospect of using this novel bioconjugate in targeted drug delivery.
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Affiliation(s)
- Hélène Freichels
- Center for Education and Research on Macromolecules (CERM), University of Liège , Sart-Tilman B6, B-4000 Liège, Belgium
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Mengoni M, Voide R, de Bien C, Freichels H, Jérôme C, Léonard A, Toye D, Müller R, van Lenthe GH, Ponthot JP. A non-linear homogeneous model for bone-like materials under compressive load. Int J Numer Method Biomed Eng 2012; 28:273-287. [PMID: 25099330 DOI: 10.1002/cnm.1473] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 07/15/2011] [Accepted: 09/01/2011] [Indexed: 06/03/2023]
Abstract
Finite element (FE) models accurately compute the mechanical response of bone and bone-like materials when the models include their detailed microstructure. In order to simulate non-linear behavior, which currently is only feasible at the expense of extremely high computational costs, coarser models can be used if the local morphology has been linked to the apparent mechanical behavior. The aim of this paper is to implement and validate such a constitutive law. This law is able to capture the non-linear structural behavior of bone-like materials through the use of fabric tensors. It also allows for irreversible strains using an elastoplastic material model incorporating hardening. These features are expressed in a constitutive law based on the anisotropic continuum damage theory coupled with isotropic elastoplasticity in a finite strain framework. This material model was implemented into metafor (LTAS-MNNL, University of Liège, Belgium), a non-linear FE software. The implementation was validated against experimental data of cylindrical samples subjected to compression. Three materials with bone-like microstructure were tested: aluminum foams of variable density (ERG, Oakland, CA, USA), polylactic acid foam (CERM, University of Liège, Liège, Belgium), and cancellous bone tissue of a deer antler (Faculty of Veterinary Medicine, University of Liège, Liège, Belgium).
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Affiliation(s)
- M Mengoni
- Department of Aerospaceand Mechanics, LTAS-Non Linear Computational Mechanics, University of Liège, Liège, Belgium.
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Freichels H, Auzély-Velty R, Lecomte P, Jérôme C. Easy functionalization of amphiphilic poly(ethylene oxide)-b-poly(ε-caprolactone) copolymer micelles with unprotected sugar: synthesis and recognition by lectins. Polym Chem 2012. [DOI: 10.1039/c2py00572g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Freichels H, Pourcelle V, Le Duff CS, Marchand-Brynaert J, Jérôme C. “Clip” and “Click” Chemistries Combination: Toward Easy PEGylation of Degradable Aliphatic Polyesters. Macromol Rapid Commun 2011; 32:616-21. [DOI: 10.1002/marc.201000803] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 01/28/2011] [Indexed: 11/10/2022]
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Rieger J, Freichels H, Imberty A, Putaux JL, Delair T, Jérôme C, Auzély-Velty R. Polyester nanoparticles presenting mannose residues: toward the development of new vaccine delivery systems combining biodegradability and targeting properties. Biomacromolecules 2010; 10:651-7. [PMID: 19203184 DOI: 10.1021/bm801492c] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the synthesis of fully biodegradable polymeric nanoparticles presenting mannose residues at their surface and their interaction with lectins. A simple and versatile method was used to reach the surface functionalization of poly(D,L-lactic acid) (PLA) nanoparticles by mannose moieties: It consists in using an amphiphilic mannosylated poly(ethylene oxide)-b-poly(E-caprolactone) (PEO-b-PCL) diblock copolymer as a bioresorbable surface modifier in a simple nanoprecipitation-evaporation procedure. The size and zeta potential of the nanoparticles were found to depend on the molar copolymer/PLA ratio, demonstrating the influence of the copolymer on the formation of the nanoparticles. The bioavailability of the mannose residues as specific recognition sites on the nanoparticle surface could be demonstrated by a modified enzyme-linked lectin assay (ELLA) using biotin-labeled lectins which interact specifically with alpha-D-mannopyrannoside derivatives. Besides specific interaction by lectin-mannose complex formation, nonspecific adsorption of the proteins on the nanoparticle surface was observed. These results were fully supported by isothermal titration calorimetry experiments which suggested that the balance between specific and nonspecific interactions can be controlled by the amount of glycosylated polymer used for the preparation of the nanoparticles. Such nanoparticles are expected to be specifically recognized by mannose receptors, which are highly expressed in cells of the immune system. The targeting properties of these carrier systems combined with their potential adjuvant effects due to their size in the range of 200-300 nm make them attractive candidates as vaccine delivery systems.
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Affiliation(s)
- Jutta Rieger
- Centre de Recherches sur les Macromolecules Vegetales (CERMAV-CNRS), Grenoble cedex 9, France.
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Fievez V, Plapied L, des Rieux A, Pourcelle V, Freichels H, Wascotte V, Vanderhaeghen ML, Jerôme C, Vanderplasschen A, Marchand-Brynaert J, Schneider YJ, Préat V. Targeting nanoparticles to M cells with non-peptidic ligands for oral vaccination. Eur J Pharm Biopharm 2009; 73:16-24. [DOI: 10.1016/j.ejpb.2009.04.009] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 04/02/2009] [Accepted: 04/21/2009] [Indexed: 01/04/2023]
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Danhier F, Vroman B, Lecouturier N, Crokart N, Pourcelle V, Freichels H, Jérôme C, Marchand-Brynaert J, Feron O, Préat V. Targeting of tumor endothelium by RGD-grafted PLGA-nanoparticles loaded with paclitaxel. J Control Release 2009; 140:166-73. [PMID: 19699245 DOI: 10.1016/j.jconrel.2009.08.011] [Citation(s) in RCA: 269] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Revised: 07/03/2009] [Accepted: 08/05/2009] [Indexed: 11/24/2022]
Abstract
Paclitaxel (PTX)-loaded PEGylated PLGA-based nanoparticles (NP) have been previously described as more effective in vitro and in vivo than taxol. The aim of this study was to test the hypothesis that our PEGylated PLGA-based nanoparticles grafted with the RGD peptide or RGD-peptidomimetic (RGDp) would target the tumor endothelium and would further enhance the anti-tumor efficacy of PTX. The ligands were grafted on the PEG chain of PCL-b-PEG included in the nanoparticles. We observed in vitro that RGD-grafted nanoparticles were more associated to human umbilical vein endothelial cells (HUVEC) by binding to alpha(v)beta(3) integrin than non-targeted nanoparticles. Doxorubicin was also used to confirm the findings observed for PTX. In vivo, we demonstrated the targeting of RGD and RGDp-grafted nanoparticles to tumor vessels as well as the effective retardation of TLT tumor growth and prolonged survival times of mice treated by PTX-loaded RGD-nanoparticles when compared to non-targeted nanoparticles. Hence, the targeting of anti-cancer drug to tumor endothelium by RGD-labeled NP is a promising approach.
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Affiliation(s)
- Fabienne Danhier
- Université Catholique de Louvain, Unité de Pharmacie Galénique, Avenue Mounier 73-20, 1200 Brussels, Belgium
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Pourcelle V, Freichels H, Stoffelbach F, Auzély-Velty R, Jérôme C, Marchand-Brynaert J. Light Induced Functionalization of PCL-PEG Block Copolymers for the Covalent Immobilization of Biomolecules. Biomacromolecules 2009; 10:966-74. [DOI: 10.1021/bm900027r] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vincent Pourcelle
- Université catholique de Louvain, Unité de Chimie Organique et Médicinale (CHOM), Bâtiment Lavoisier, place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium, Center for Education and Research on Macromolecules (CERM), Université de Liège, Sart-Tilman B6, B-4000 Liège, Belgium, and Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble cedex 9, France
| | - Hélène Freichels
- Université catholique de Louvain, Unité de Chimie Organique et Médicinale (CHOM), Bâtiment Lavoisier, place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium, Center for Education and Research on Macromolecules (CERM), Université de Liège, Sart-Tilman B6, B-4000 Liège, Belgium, and Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble cedex 9, France
| | - François Stoffelbach
- Université catholique de Louvain, Unité de Chimie Organique et Médicinale (CHOM), Bâtiment Lavoisier, place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium, Center for Education and Research on Macromolecules (CERM), Université de Liège, Sart-Tilman B6, B-4000 Liège, Belgium, and Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble cedex 9, France
| | - Rachel Auzély-Velty
- Université catholique de Louvain, Unité de Chimie Organique et Médicinale (CHOM), Bâtiment Lavoisier, place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium, Center for Education and Research on Macromolecules (CERM), Université de Liège, Sart-Tilman B6, B-4000 Liège, Belgium, and Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble cedex 9, France
| | - Christine Jérôme
- Université catholique de Louvain, Unité de Chimie Organique et Médicinale (CHOM), Bâtiment Lavoisier, place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium, Center for Education and Research on Macromolecules (CERM), Université de Liège, Sart-Tilman B6, B-4000 Liège, Belgium, and Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble cedex 9, France
| | - Jacqueline Marchand-Brynaert
- Université catholique de Louvain, Unité de Chimie Organique et Médicinale (CHOM), Bâtiment Lavoisier, place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium, Center for Education and Research on Macromolecules (CERM), Université de Liège, Sart-Tilman B6, B-4000 Liège, Belgium, and Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble cedex 9, France
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Garinot M, Fiévez V, Pourcelle V, Stoffelbach F, des Rieux A, Plapied L, Theate I, Freichels H, Jérôme C, Marchand-Brynaert J, Schneider YJ, Préat V. PEGylated PLGA-based nanoparticles targeting M cells for oral vaccination. J Control Release 2007; 120:195-204. [PMID: 17586081 DOI: 10.1016/j.jconrel.2007.04.021] [Citation(s) in RCA: 266] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2006] [Revised: 03/28/2007] [Accepted: 04/30/2007] [Indexed: 11/25/2022]
Abstract
To improve the efficiency of orally delivered vaccines, PEGylated PLGA-based nanoparticles displaying RGD molecules at their surface were designed to target human M cells. RGD grafting was performed by an original method called "photografting" which covalently linked RGD peptides mainly on the PEG moiety of the PCL-PEG, included in the formulation. First, three non-targeted formulations with size and zeta potential adapted to M cell uptake and stable in gastro-intestinal fluids, were developed. Their transport by an in vitro model of the human Follicle associated epithelium (co-cultures) was largely increased as compared to mono-cultures (Caco-2 cells). RGD-labelling of nanoparticles significantly increased their transport by co-cultures, due to interactions between the RGD ligand and the beta(1) intregrins detected at the apical surface of co-cultures. In vivo studies demonstrated that RGD-labelled nanoparticles particularly concentrated in M cells. Finally, ovalbumin-loaded nanoparticles were orally administrated to mice and induced an IgG response, attesting antigen ability to elicit an immune response after oral delivery.
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Affiliation(s)
- Marie Garinot
- Université Catholique de Louvain, Unité de Pharmacie Galénique, Brussels, Belgium
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