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Abdelrahman N, Drescher S, Ann Dailey L, Klang V. Investigation of keratolytic impact of synthetic bolalipids on skin penetration of a model hydrophilic permeant. Eur J Pharm Biopharm 2024; 203:114433. [PMID: 39098617 DOI: 10.1016/j.ejpb.2024.114433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 04/26/2024] [Accepted: 08/01/2024] [Indexed: 08/06/2024]
Abstract
Synthetic single-chain bolalipids (SSCBs) are novel excipients in drug delivery, with potential as stabilizers or solubilizers. However, their impact on skin barrier function has not been comprehensively studied. Therefore, two SSCBs (PC-C24-PC and PC-C32-PC) were studied in aqueous systems for their impact on penetration of a model permeant into porcine skin. Concentrations of 0.05 - 5 % w/w were tested; PC-C24-PC formulations were low-viscosity liquids while PC-C32-PC formed viscous dispersions to gels at room temperature. Formulations were compared for their ability to enhance sodium fluorescein penetration (SF, 0.1 % w/w) into skin via tape stripping. Using NIR-densitometry, the effect of SSCB formulations on corneocyte cohesion was evaluated. Data were compared with phospholipid mixture Lipoid S-75, sodium dodecyl sulfate (SDS), and polyethylene glycol 12-hydroxystearate (PEG-HS), and distilled water as negative control. Contrary to the hypothesis, both SSCBs failed to increase SF penetration into the stratum corneum, but rather showed a significant decrease in penetration depth compared to water. Both SSCBs exhibited a keratolytic effect at 5 % w/w, leading to substantial removal of proteins from the skin surface. Consequently, SSCBs may not enhance penetration of hydrophilic drugs into skin, but could be used as keratolytic agents.
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Affiliation(s)
- Namarig Abdelrahman
- University of Vienna, Doctoral School of Pharmaceutical, Nutritional and Sport Sciences, 1090, Vienna, Austria
| | - Simon Drescher
- Phospholipid Research Center, Im Neuenheimer Feld 515, 69120, Heidelberg, Germany
| | - Lea Ann Dailey
- University of Vienna, Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, Josef-Holaubek-Platz 2, 1090, Vienna, Austria.
| | - Victoria Klang
- University of Vienna, Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, Josef-Holaubek-Platz 2, 1090, Vienna, Austria.
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2
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Korn P, Schwieger C, Gruhle K, Garamus VM, Meister A, Ihling C, Drescher S. Azide- and diazirine-modified membrane lipids: Physicochemistry and applicability to study peptide/lipid interactions via cross-linking/mass spectrometry. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2022; 1864:184004. [PMID: 35841926 DOI: 10.1016/j.bbamem.2022.184004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
Although the incorporation of photo-activatable lipids into membranes potentially opens new avenues for studying interactions with peptides and proteins, the question of whether azide- or diazirine-modified lipids are suitable for such studies remains controversial. We have recently shown that diazirine-modified lipids can indeed form cross-links to membrane peptides after UV activation and that these cross-links can be precisely determined in their position by mass spectrometry (MS). However, we also observed an unexpected backfolding of the lipid's diazirine-containing stearoyl chain to the membrane interface challenging the potential application of this modified lipid for future cross-linking (XL)-MS studies of protein/lipid interactions. In this work, we compared an azide- (AzidoPC) and a diazirine-modified (DiazPC) membrane lipid regarding their self-assembly properties, their mixing behavior with saturated bilayer-forming phospholipids, and their reactivity upon UV activation using differential scanning calorimetry (DSC), dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), and MS. Mixtures of both modified lipids with DMPC were further used for photo-chemically induced XL experiments with a transmembrane model peptide (KLAW23) to elucidate similarities and differences between the azide and the diazirine moiety. We showed that both photo-reactive lipids can be used to study lipid/peptide and lipid/protein interactions. The AzidoPC proved easier to handle, whereas the DiazPC had fewer degradation products and a higher cross-linking yield. However, the problem of backfolding occurs in both lipids; thus, it seems to be a general phenomenon.
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Affiliation(s)
- Patricia Korn
- Institute of Pharmacy-Pharmaceutical Chemistry and Bioanalytics, Charles Tanford Protein Center, Martin Luther University (MLU) Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle (Saale), Germany
| | - Christian Schwieger
- Institute of Chemistry, MLU Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
| | - Kai Gruhle
- Institute of Pharmacy-Pharmaceutical Chemistry and Bioanalytics, Charles Tanford Protein Center, Martin Luther University (MLU) Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle (Saale), Germany; Institute of Pharmacy-Biophysical Pharmacy, MLU Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
| | - Vasil M Garamus
- Helmholtz-Zentrum Hereon, Max-Planck-Str. 1, 21502 Geesthacht, Germany
| | - Annette Meister
- Interdisciplinary Research Center HALOmem, MLU Halle-Wittenberg, Charles Tanford Protein Center, Kurt-Mothes-Str. 3a, 06120 Halle (Saale), Germany; Institute of Biochemistry and Biotechnology-Physical Biotechnology, Charles Tanford Protein Center, MLU Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle (Saale), Germany
| | - Christian Ihling
- Institute of Pharmacy-Pharmaceutical Chemistry and Bioanalytics, Charles Tanford Protein Center, Martin Luther University (MLU) Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle (Saale), Germany; Center for Structural Mass Spectrometry, Kurt-Mothes-Str. 3, 06120 Halle (Saale), Germany
| | - Simon Drescher
- Institute of Pharmacy-Biophysical Pharmacy, MLU Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany; Phospholipid Research Center, Im Neuenheimer Feld 515, 69120 Heidelberg, Germany.
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Li F, Harvey RD, Modicano P, Hamdi F, Kyrilis F, Müller S, Gruhle K, Kastritis P, Drescher S, Dailey LA. Investigating bolalipids as solubilizing agents for poorly soluble drugs: Effects of alkyl chain length on solubilization and cytotoxicity. Colloids Surf B Biointerfaces 2022; 212:112369. [PMID: 35123195 DOI: 10.1016/j.colsurfb.2022.112369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/17/2022] [Accepted: 01/23/2022] [Indexed: 01/31/2023]
Abstract
Synthetic single-chain bolalipids with symmetrical headgroups have shown potential in various pharmaceutical applications, such as the stabilization of liposome bilayers. Despite their amphiphilic character, synthetic bolalipids have not yet been investigated for their suitability as solubilizing agents for poorly soluble drug compounds. In this study, three synthetic single-chain bolalipids with increasing alkyl chain lengths (C22, C24 and C26) were investigated. All three bolalipids were able to achieve an increased solubility of the model drug, mefenamic acid, by approximately 180% in a pH 7.4 buffer compared to only a 102-105% increase achieved by sodium dodecyl sulfate (SDS) or the non-ionic surfactant pegylated hydroxystearate (PEG-HS). Subsequently, interfacial activity of bolalipids and their ability to destabilize liposomal bilayers were investigated. The C22 bolalipid exhibited a consistently lower interfacial activity, which was consistent with its significantly lower cytotoxicity in the macrophage-like cell line, J774. A1, compared to C24 and C26 counterparts. The mean IC50 values of the bolalipids tested (0.035-0.093 mM) were approximately 4-100-fold lower than that of SDS (0.401 mM) or PEG-HS (0.922 mM), with the mechanism of toxicity linked to increased cell membrane permeability, as is expected for surfactants. In summary, evidence from this study shows that decreasing the length of the bolalipid alkyl linker from C26 to C22 resulted in a significantly decreased cytotoxicity with no loss in drug solubilization efficiency.
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Affiliation(s)
- Feng Li
- Department of Pharmaceutical Sciences, University of Vienna, Althanstraße 14, A-1090 Vienna, Austria
| | - Richard D Harvey
- Department of Pharmaceutical Sciences, University of Vienna, Althanstraße 14, A-1090 Vienna, Austria
| | - Paola Modicano
- Institute of Pharmacy, Department of Pharmaceutical Technology and Biopharmaceutics, Martin Luther University (MLU) Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle (Saale), Germany
| | - Farzad Hamdi
- Biozentrum, MLU Halle-Wittenberg, Weinbergweg 22, Halle/Saale, Germany; Interdisciplinary Research Center HALOmem, Charles Tanford Protein Center, MLU Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle (Saale), Germany
| | - Fotios Kyrilis
- Biozentrum, MLU Halle-Wittenberg, Weinbergweg 22, Halle/Saale, Germany; Interdisciplinary Research Center HALOmem, Charles Tanford Protein Center, MLU Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle (Saale), Germany
| | - Sindy Müller
- Institute of Pharmacy, Department of Pharmaceutical Chemistry, MLU Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
| | - Kai Gruhle
- Institute of Pharmacy, Department of Pharmaceutical Chemistry, MLU Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
| | - Panagiotis Kastritis
- Biozentrum, MLU Halle-Wittenberg, Weinbergweg 22, Halle/Saale, Germany; Interdisciplinary Research Center HALOmem, Charles Tanford Protein Center, MLU Halle-Wittenberg, Kurt-Mothes-Str. 3a, 06120 Halle (Saale), Germany
| | - Simon Drescher
- Phospholipid Research Center, Im Neuenheimer Feld 515, 69120 Heidelberg, Germany
| | - Lea Ann Dailey
- Department of Pharmaceutical Sciences, University of Vienna, Althanstraße 14, A-1090 Vienna, Austria.
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Falk ID, Gál B, Bhattacharya A, Wei JH, Welander PV, Boxer SG, Burns NZ. Enantioselective Total Synthesis of the Archaeal Lipid Parallel GDGT‐0 (Isocaldarchaeol)**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Isaac D. Falk
- Department of Chemistry Stanford University Stanford CA 94305 USA
| | - Bálint Gál
- Department of Chemistry Stanford University Stanford CA 94305 USA
| | | | - Jeremy H. Wei
- Department of Earth System Science Stanford University Stanford CA 94305 USA
| | - Paula V. Welander
- Department of Earth System Science Stanford University Stanford CA 94305 USA
| | - Steven G. Boxer
- Department of Chemistry Stanford University Stanford CA 94305 USA
| | - Noah Z. Burns
- Department of Chemistry Stanford University Stanford CA 94305 USA
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Falk ID, Gál B, Bhattacharya A, Wei JH, Welander PV, Boxer SG, Burns NZ. Enantioselective Total Synthesis of the Archaeal Lipid Parallel GDGT-0 (Isocaldarchaeol)*. Angew Chem Int Ed Engl 2021; 60:17491-17496. [PMID: 33930240 DOI: 10.1002/anie.202104051] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Indexed: 12/13/2022]
Abstract
Archaeal glycerol dibiphytanyl glycerol tetraethers (GDGT) are some of the most unusual membrane lipids identified in nature. These amphiphiles are the major constituents of the membranes of numerous Archaea, some of which are extremophilic organisms. Due to their unique structures, there has been significant interest in studying both the biophysical properties and the biosynthesis of these molecules. However, these studies have thus far been hampered by limited access to chemically pure samples. Herein, we report a concise and stereoselective synthesis of the archaeal tetraether lipid parallel GDGT-0 and the synthesis and self-assembly of derivatives bearing different polar groups.
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Affiliation(s)
- Isaac D Falk
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Bálint Gál
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | | | - Jeremy H Wei
- Department of Earth System Science, Stanford University, Stanford, CA, 94305, USA
| | - Paula V Welander
- Department of Earth System Science, Stanford University, Stanford, CA, 94305, USA
| | - Steven G Boxer
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Noah Z Burns
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
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Drescher S, van Hoogevest P. The Phospholipid Research Center: Current Research in Phospholipids and Their Use in Drug Delivery. Pharmaceutics 2020; 12:pharmaceutics12121235. [PMID: 33353254 PMCID: PMC7766331 DOI: 10.3390/pharmaceutics12121235] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 12/16/2022] Open
Abstract
This review summarizes the research on phospholipids and their use for drug delivery related to the Phospholipid Research Center Heidelberg (PRC). The focus is on projects that have been approved by the PRC since 2017 and are currently still ongoing or have recently been completed. The different projects cover all facets of phospholipid research, from basic to applied research, including the use of phospholipids in different administration forms such as liposomes, mixed micelles, emulsions, and extrudates, up to industrial application-oriented research. These projects also include all routes of administration, namely parenteral, oral, and topical. With this review we would like to highlight possible future research directions, including a short introduction into the world of phospholipids.
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Müller S, Schwieger C, Gruhle K, Garamus VM, Hause G, Meister A, Drescher S. Azide-Modified Membrane Lipids: Miscibility with Saturated Phosphatidylcholines. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12439-12450. [PMID: 31456406 DOI: 10.1021/acs.langmuir.9b01842] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, we describe the miscibility of four azide-modified membrane phospholipids (azidolipids) with conventional phospholipids. The azidolipids bear an azide group at different positions of the sn-1 or sn-2 alkyl chain and they further differ in the type of linkage (ester vs ether) of the sn-2 alkyl chain. Investigations regarding the miscibility of the azidolipids with bilayer-forming phosphatidylcholines will evaluate lipid mixtures that are suitable for the production of stable azidolipid-doped liposomes. These vesicles then serve as model membranes for the incorporation of model peptides or proteins in the future. The miscibility of both types of phospholipids was studied by calorimetric assays, electron microscopy, small-angle X-ray scattering, infrared spectroscopy, and dynamic light scattering to provide a complete biophysical characterization of the mixed systems.
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Affiliation(s)
- Sindy Müller
- Institute of Pharmacy-Biophysical Pharmacy , Martin Luther University (MLU) Halle-Wittenberg , Wolfgang-Langenbeck-Strasse 4 , 06120 Halle (Saale) , Germany
| | - Christian Schwieger
- Institute of Chemistry , MLU Halle-Wittenberg , von-Danckelmann-Platz 4 , 06120 Halle (Saale) , Germany
| | - Kai Gruhle
- Institute of Pharmacy-Biophysical Pharmacy , Martin Luther University (MLU) Halle-Wittenberg , Wolfgang-Langenbeck-Strasse 4 , 06120 Halle (Saale) , Germany
| | - Vasil M Garamus
- Helmholtz-Zentrum Geesthacht (HZG): Zentrum für Material- und Küstenforschung GmbH , Max-Planck-Strasse 1 , 21502 Geesthacht , Germany
| | - Gerd Hause
- Biocenter , MLU Halle-Wittenberg , Weinbergweg 22 , 06120 Halle (Saale) , Germany
| | - Annette Meister
- ZIK HALOmem and Institute of Biochemistry and Biotechnology, Charles Tanford Protein Center , MLU Halle-Wittenberg , Kurt-Mothes-Strasse 3a , 06120 Halle (Saale) , Germany
| | - Simon Drescher
- Institute of Pharmacy-Biophysical Pharmacy , Martin Luther University (MLU) Halle-Wittenberg , Wolfgang-Langenbeck-Strasse 4 , 06120 Halle (Saale) , Germany
- Institute of Pharmacy , University of Greifswald , Friedrich-Ludwig-Jahn-Str. 17 , 17489 Greifswald , Germany
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Bouraoui A, Ghanem R, Berchel M, Vié V, Le Guen Y, Paboeuf G, Deschamps L, Le Gall T, Montier T, Jaffrès PA. Bis-Thioether-Containing Lipid Chains in Cationic Amphiphiles: Physicochemical Properties and Applications in Gene Delivery. Chemphyschem 2019; 20:2187-2194. [PMID: 31393059 DOI: 10.1002/cphc.201900626] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/18/2019] [Indexed: 11/08/2022]
Abstract
Cationic amphiphiles featuring two thioether functions in each lipid chain of bicatenar cationic amphiphiles are reported here for the first time. The physicochemical properties and transfection abilities of these new amphiphiles were compared with those of already reported analogues featuring either (i) saturated, (ii) unsaturated or (iii) mono-thioether containing lipid chains. The homogeneity of the series of new compounds allowed to clearly underscore the effect of bis-thioether containing lipid chains. This study shows that besides previous strategies based on unsaturation or ramification, the incorporation of two thioether functions per lipid chain constitutes an original complementary alternative to tune the supramolecular properties of amphiphilic compounds. The potential of this strategy was evaluated in the context of gene delivery and report that two cationic amphiphiles (i. e. 4 a and 4 b) can be proposed as new efficient transfection reagents.
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Affiliation(s)
- Amal Bouraoui
- Univ Brest, CNRS, CEMCA, UMR CNRS 6521, 6 Avenue Victor Le Gorgeu, F-29238, Brest, France
| | - Rosy Ghanem
- Univ Brest, INSERM UMR 1078, IBSAM, UFR Médecine et Sciences de la Santé, CHRU Brest, 22 avenue Camille Desmoulins, F-29238, Brest, France
| | - Mathieu Berchel
- Univ Brest, CNRS, CEMCA, UMR CNRS 6521, 6 Avenue Victor Le Gorgeu, F-29238, Brest, France
| | - Véronique Vié
- Univ Rennes, CNRS, IPR - UMR 6251, ScanMAT - UMS 2001, F-35000, Rennes, France
| | - Yann Le Guen
- Univ Brest, INSERM UMR 1078, IBSAM, UFR Médecine et Sciences de la Santé, CHRU Brest, 22 avenue Camille Desmoulins, F-29238, Brest, France
| | - Gilles Paboeuf
- Univ Rennes, CNRS, IPR - UMR 6251, ScanMAT - UMS 2001, F-35000, Rennes, France
| | - Laure Deschamps
- Univ Brest, CNRS, CEMCA, UMR CNRS 6521, 6 Avenue Victor Le Gorgeu, F-29238, Brest, France
| | - Tony Le Gall
- Univ Brest, INSERM UMR 1078, IBSAM, UFR Médecine et Sciences de la Santé, CHRU Brest, 22 avenue Camille Desmoulins, F-29238, Brest, France
| | - Tristan Montier
- Univ Brest, INSERM UMR 1078, IBSAM, UFR Médecine et Sciences de la Santé, CHRU Brest, 22 avenue Camille Desmoulins, F-29238, Brest, France
| | - Paul-Alain Jaffrès
- Univ Brest, CNRS, CEMCA, UMR CNRS 6521, 6 Avenue Victor Le Gorgeu, F-29238, Brest, France
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10
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Müller S, Meister A, Otto C, Hause G, Drescher S. Mixing behaviour of asymmetrical glycerol diether bolalipids with saturated and unsaturated phosphatidylcholines. Biophys Chem 2018; 238:39-48. [DOI: 10.1016/j.bpc.2018.04.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/17/2018] [Accepted: 04/21/2018] [Indexed: 12/17/2022]
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