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Binte Abu Bakar SY, Salim M, Clulow AJ, Seibt S, Landersdorfer CB, Geddes DT, Nicholas KR, Boyd BJ. Construction of a Synthetic Colostrum Substitute and Its Protection of Intestinal Cells against Inflammation in an In Vitro Model of Necrotizing Enterocolitis. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37480336 DOI: 10.1021/acsami.3c05012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
Colostrum provides bioactive components that are essential for the colonization of microbiota in the infant gut, while preventing infectious diseases such as necrotizing enterocolitis. As colostrum is not always available from the mother, particularly for premature infants, effective and safe substitutes are keenly sought after by neonatologists. The benefits of bioactive factors in colostrum are recognized; however, there have been no accounts of human colostrum being studied during digestion of the lipid components or their self-assembly in gastrointestinal environments. Due to the weaker bile pool in infants than adults, evaluating the lipid composition of human colostrum and linking it to structural self-assembly behavior is important in these settings and thus enabling the formulation of substitutes for colostrum. This study is aimed at the rational design of an appropriate lipid component for a colostrum substitute and determining the ability of this formulation to reduce inflammation in intestinal cells. Gas chromatography was utilized to map lipid composition. The self-assembly of lipid components occurring during digestion of colostrum was monitored using small-angle X-ray scattering for comparison with substitute mixtures containing pure triglyceride lipids based on their abundance in colostrum. The digestion profiles of human colostrum and the substitute mixtures were similar. Subtle differences in lipid self-assembly were evident, with the substitute mixtures exhibiting additional non-lamellar phases, which were not seen for human colostrum. The difference is attributable to the distribution of free fatty acids released during digestion. The biological markers of necrotizing enterocolitis were modulated in cells that were treated with bifidobacteria cultured on colostrum substitute mixtures, compared to those treated with infant formula. These findings provide an insight into a colostrum substitute mixture that resembles human colostrum in terms of composition and structural behavior during digestion and potentially reduces some of the characteristics associated with necrotizing enterocolitis.
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Affiliation(s)
- Syaza Y Binte Abu Bakar
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Malinda Salim
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Andrew J Clulow
- Australian Synchrotron, ANSTO, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Susanne Seibt
- Australian Synchrotron, ANSTO, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Cornelia B Landersdorfer
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Donna T Geddes
- School of Molecular Science, The University of Western Australia, M310, 25 Stirling Highway, Crawley, Western Australia 6009, Australia
| | - Kevin R Nicholas
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 København Ø, Denmark
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2
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Impact of pasteurization on the self-assembly of human milk lipids during digestion. J Lipid Res 2022; 63:100183. [PMID: 35181315 PMCID: PMC9065913 DOI: 10.1016/j.jlr.2022.100183] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 02/09/2022] [Accepted: 02/14/2022] [Indexed: 11/21/2022] Open
Abstract
Human milk is critical for the survival and development of infants. This source of nutrition contains components that protect against infections while stimulating immune maturation. In cases where the mother's own milk is unavailable, pasteurized donor milk is the preferred option. Although pasteurization has been shown to have minimal impact on the lipid and FA composition before digestion, no correlation has been made between the impact of pasteurization on the FFA composition and the self-assembly of lipids during digestion, which could act as delivery mechanisms for poorly water-soluble components. Pooled nonpasteurized and pasteurized human milk from a single donor was used in this study. The evolving FFA composition during digestion was determined using GC coupled to a flame ionization detector. In vitro digestion coupled to small-angle X-ray scattering was utilized to investigate the influence of different calcium levels, fat content, and the presence of bile salts on the extent of digestion and structural behavior of human milk lipids. Almost complete digestion was achieved when bile salts were added to the systems containing high calcium to milk fat ratio, with similar structural behavior of lipids during digestion of both types of human milk being apparent. In contrast, differences in the colloidal structures were formed during digestion in the absence of bile salt because of a greater amount of FFAs being released from the nonpasteurized than pasteurized milks. This difference in FFAs released from both types of human milk could result in varying nutritional implications for infants.
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Caputo AT, Ibba R, Le Cornu JD, Darlot B, Hensen M, Lipp CB, Marcianò G, Vasiljević S, Zitzmann N, Roversi P. Crystal polymorphism in fragment-based lead discovery of ligands of the catalytic domain of UGGT, the glycoprotein folding quality control checkpoint. Front Mol Biosci 2022; 9:960248. [PMID: 36589243 PMCID: PMC9794592 DOI: 10.3389/fmolb.2022.960248] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 11/11/2022] [Indexed: 12/15/2022] Open
Abstract
None of the current data processing pipelines for X-ray crystallography fragment-based lead discovery (FBLD) consults all the information available when deciding on the lattice and symmetry (i.e., the polymorph) of each soaked crystal. Often, X-ray crystallography FBLD pipelines either choose the polymorph based on cell volume and point-group symmetry of the X-ray diffraction data or leave polymorph attribution to manual intervention on the part of the user. Thus, when the FBLD crystals belong to more than one crystal polymorph, the discovery pipeline can be plagued by space group ambiguity, especially if the polymorphs at hand are variations of the same lattice and, therefore, difficult to tell apart from their morphology and/or their apparent crystal lattices and point groups. In the course of a fragment-based lead discovery effort aimed at finding ligands of the catalytic domain of UDP-glucose glycoprotein glucosyltransferase (UGGT), we encountered a mixture of trigonal crystals and pseudotrigonal triclinic crystals-with the two lattices closely related. In order to resolve that polymorphism ambiguity, we have written and described here a series of Unix shell scripts called CoALLA (crystal polymorph and ligand likelihood-based assignment). The CoALLA scripts are written in Unix shell and use autoPROC for data processing, CCP4-Dimple/REFMAC5 and BUSTER for refinement, and RHOFIT for ligand docking. The choice of the polymorph is effected by carrying out (in each of the known polymorphs) the tasks of diffraction data indexing, integration, scaling, and structural refinement. The most likely polymorph is then chosen as the one with the best structure refinement Rfree statistic. The CoALLA scripts further implement a likelihood-based ligand assignment strategy, starting with macromolecular refinement and automated water addition, followed by removal of the water molecules that appear to be fitting ligand density, and a final round of refinement after random perturbation of the refined macromolecular model, in order to obtain unbiased difference density maps for automated ligand placement. We illustrate the use of CoALLA to discriminate between H3 and P1 crystals used for an FBLD effort to find fragments binding to the catalytic domain of Chaetomium thermophilum UGGT.
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Affiliation(s)
- Alessandro T. Caputo
- Biochemistry Department, Oxford Glycobiology Institute, University of Oxford, Oxford, United Kingdom
- Commonwealth Scientific and Industrial Research Organisation, Clayton, VIC, Australia
| | - Roberta Ibba
- Biochemistry Department, Oxford Glycobiology Institute, University of Oxford, Oxford, United Kingdom
- Department of Medicine, Surgery and Pharmacy, University of Sassari, Sassari, Italy
| | - James D. Le Cornu
- Biochemistry Department, Oxford Glycobiology Institute, University of Oxford, Oxford, United Kingdom
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Scotland, United Kingdom
| | - Benoit Darlot
- Biochemistry Department, Oxford Glycobiology Institute, University of Oxford, Oxford, United Kingdom
| | - Mario Hensen
- Biochemistry Department, Oxford Glycobiology Institute, University of Oxford, Oxford, United Kingdom
| | - Colette B. Lipp
- Biochemistry Department, Oxford Glycobiology Institute, University of Oxford, Oxford, United Kingdom
| | - Gabriele Marcianò
- Biochemistry Department, University of Oxford, Oxford, United Kingdom
| | - Snežana Vasiljević
- Biochemistry Department, Oxford Glycobiology Institute, University of Oxford, Oxford, United Kingdom
| | - Nicole Zitzmann
- Biochemistry Department, Oxford Glycobiology Institute, University of Oxford, Oxford, United Kingdom
- *Correspondence: Nicole Zitzmann, ; Pietro Roversi,
| | - Pietro Roversi
- IBBA-CNR Unit of Milano, Institute of Agricultural Biology and Biotechnology, Milano, Italy
- Department of Molecular and Cell Biology, Leicester Institute of Structural and Chemical Biology, University of Leicester, Leicester, United Kingdom
- *Correspondence: Nicole Zitzmann, ; Pietro Roversi,
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Roy B, Hazra P. Nucleophilicity and pH of water inside lipidic nano-channels of lyotropic liquid crystalline phases. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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5
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Prange JA, Aleandri S, Komisarski M, Luciani A, Käch A, Schuh CD, Hall AM, Mezzenga R, Devuyst O, Landau EM. Overcoming Endocytosis Deficiency by Cubosome Nanocarriers. ACS APPLIED BIO MATERIALS 2019; 2:2490-2499. [DOI: 10.1021/acsabm.9b00187] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jenny A. Prange
- Institute of Physiology, University of Zurich, Zurich 8057, Switzerland
| | - Simone Aleandri
- Department of Chemistry, University of Zurich, Zurich 8057, Switzerland
| | - Marek Komisarski
- Department of Chemistry, University of Zurich, Zurich 8057, Switzerland
| | | | - Andres Käch
- Center for Microscopy and Image Analysis, University of Zurich, Zurich 8057, Switzerland
| | | | - Andrew M. Hall
- Institute of Anatomy, University of Zurich, Zurich 8057, Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences & Technology, ETH Zurich, Zurich 8092, Switzerland
| | - Olivier Devuyst
- Institute of Physiology, University of Zurich, Zurich 8057, Switzerland
| | - Ehud M. Landau
- Department of Chemistry, University of Zurich, Zurich 8057, Switzerland
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Das K, Roy B, Satpathi S, Hazra P. Impact of Topology on the Characteristics of Water inside Cubic Lyotropic Liquid Crystalline Systems. J Phys Chem B 2019; 123:4118-4128. [DOI: 10.1021/acs.jpcb.9b01559] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Konoya Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune Dr. Homi Bhabha Road, Pashan, Pune, India 411008
| | - Bibhisan Roy
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune Dr. Homi Bhabha Road, Pashan, Pune, India 411008
| | - Sagar Satpathi
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune Dr. Homi Bhabha Road, Pashan, Pune, India 411008
| | - Partha Hazra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune Dr. Homi Bhabha Road, Pashan, Pune, India 411008
- Centre for Energy Science, Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, India 411008
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7
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A vesicle-to-sponge transition via the proliferation of membrane-linking pores in ω-3 polyunsaturated fatty acid-containing lipid assemblies. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.124] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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8
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Liquid Crystalline Systems Based on Glyceryl Monooleate and Penetration Enhancers for Skin Delivery of Celecoxib: Characterization, In Vitro Drug Release, and In Vivo Studies. J Pharm Sci 2018; 107:870-878. [DOI: 10.1016/j.xphs.2017.10.039] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/15/2017] [Accepted: 10/27/2017] [Indexed: 11/21/2022]
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9
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Mishraki-Berkowitz T, Cohen G, Aserin A, Garti N. Controlling insulin release from reverse hexagonal (H II) liquid crystalline mesophase by enzymatic lipolysis. Colloids Surf B Biointerfaces 2018; 161:670-676. [PMID: 29172155 DOI: 10.1016/j.colsurfb.2017.11.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 10/29/2017] [Accepted: 11/11/2017] [Indexed: 12/14/2022]
Abstract
In the present study we aimed to control insulin release from the reverse hexagonal (HII) mesophase using Thermomyces lanuginosa lipase (TLL) in the environment (outer TLL) or within the HII cylinders (inner TLL). Two insulin-loaded systems differing by the presence (or absence) of phosphatidylcholine (PC) were examined. In general, incorporation of PC into the HII interface (without TLL) increased insulin release, as a more cooperative system was formed. Addition of TLL to the systems' environments resulted in lipolysis of the HII structure. In the absence of PC, the lipolysis was more dominant and led to a significant increase in insulin release (50% after 8h). However, the presence of PC stabilized the interface, hindering the lipolysis, and therefore no impact on the release profile was detected during the first 8h. Entrapment of TLL within the HII cylinders (with and without PC) drastically increased insulin release in both systems up to 100%. In the presence of PC insulin released faster and the structure was more stable. Consequently, the presence of lipases (inner or outer) both enhanced the destruction of the carrier, and provided sustained release of the entrapped insulin.
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Affiliation(s)
- Tehila Mishraki-Berkowitz
- The Ratner Chair in Chemistry, Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 9190401, Israel
| | - Guy Cohen
- Skin Research Institute, Dead-Sea & Arava Science Center, Ein Gedi, Israel
| | - Abraham Aserin
- The Ratner Chair in Chemistry, Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 9190401, Israel
| | - Nissim Garti
- The Ratner Chair in Chemistry, Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 9190401, Israel.
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10
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Zabara A, Meikle TG, Newman J, Peat TS, Conn CE, Drummond CJ. The nanoscience behind the art of in-meso crystallization of membrane proteins. NANOSCALE 2017; 9:754-763. [PMID: 27976759 DOI: 10.1039/c6nr07634c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The structural changes occurring at the nanoscale level within the lipid bilayer and driving the in-meso formation of large well-diffracting membrane protein crystals have been uniquely characterized for a model membrane protein, intimin. Importantly, the order to order transitions taking place within the bilayer and the lipidic nanostructures required for crystal growth have been shown to be general, occurring for both the cubic and the sponge mesophase crystallization pathways. For the first time, a transient fluid lamellar phase has been observed and unambiguously assigned for both crystallization pathways, present at the earliest stages of protein crystallogenesis but no longer observed once the crystals surpass the size of the average lyotropic liquid crystalline domain. The reported time-resolved structural investigation provides a significantly improved and general understanding of the nanostructural changes taking place within the mesophase during in-meso crystallization which is a fundamental advance in the enabling area of membrane protein structural biology.
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Affiliation(s)
- Alexandru Zabara
- RMIT University, School of Science, College of Science Engineering and Health 124 La Trobe Street, Melbourne, Victoria 3000, Australia. and Biomedical Manufacturing Program, Commonwealth Scientific and Industrial Research Organisation (CSIRO), 343 Royal Parade, Parkville, Victoria 3052, Australia
| | - Thomas G Meikle
- School of Chemistry, Bio21 Institute, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Janet Newman
- Biomedical Manufacturing Program, Commonwealth Scientific and Industrial Research Organisation (CSIRO), 343 Royal Parade, Parkville, Victoria 3052, Australia
| | - Thomas S Peat
- Biomedical Manufacturing Program, Commonwealth Scientific and Industrial Research Organisation (CSIRO), 343 Royal Parade, Parkville, Victoria 3052, Australia
| | - Charlotte E Conn
- RMIT University, School of Science, College of Science Engineering and Health 124 La Trobe Street, Melbourne, Victoria 3000, Australia.
| | - Calum J Drummond
- RMIT University, School of Science, College of Science Engineering and Health 124 La Trobe Street, Melbourne, Victoria 3000, Australia.
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Mishraki-Berkowitz T, Aserin A, Garti N. Structural properties and release of insulin-loaded reverse hexagonal (HII) liquid crystalline mesophase. J Colloid Interface Sci 2017; 486:184-193. [DOI: 10.1016/j.jcis.2016.09.074] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/28/2016] [Accepted: 09/28/2016] [Indexed: 12/15/2022]
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12
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Sagalowicz L, Moccand C, Davidek T, Ghanbari R, Martiel I, Negrini R, Mezzenga R, Leser ME, Blank I, Michel M. Lipid self-assembled structures for reactivity control in food. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2016; 374:rsta.2015.0136. [PMID: 27298441 DOI: 10.1098/rsta.2015.0136] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/08/2016] [Indexed: 06/06/2023]
Abstract
Lipid self-assembled structures (SASs) have recently gained considerable interest for their potential applications, especially for sustained nutrient release and protein crystallization. An additional property, which is underexploited, is their ability to control chemical reactions in food products. Here, we concentrate on SASs formed by phospholipids (PLs) and monoglycerides (MGs), those compounds being the most natural surfactants and therefore, the best compatible with food products, in view of providing new functionalities through the formation of SASs. In this work, the phase behaviour of these amphiphiles when mixed with oil and water is described and compared. Subsequently, we address the influence of these structures to the oxidation and Maillard-type reactions. Finally, we show that SASs formed by MGs can strongly increase the yield of key aroma impact compounds generated by Maillard-type reactions when compared with the reaction performed in aqueous precursor solutions. Various SASs are compared. In particular, addition of oil to a reversed bicontinuous structure formed by MG leads to a reversed microemulsion, which, considering its low viscosity, is particularly suitable for food products and act as a very efficient reactor system. The influence of oil and precursors on phase behaviour is discussed and related to the efficiency of the Maillard reactions.This article is part of the themed issue 'Soft interfacial materials: from fundamentals to formulation'.
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Affiliation(s)
- L Sagalowicz
- Nestlé Research Center, Vers-Chez-Les-Blanc, Lausanne 26 1000, Switzerland
| | - C Moccand
- Nestlé Research Center, Vers-Chez-Les-Blanc, Lausanne 26 1000, Switzerland
| | - T Davidek
- Nestlé PTC Orbe, Rte de Chavornay 3, Orbe 1350, Switzerland
| | - R Ghanbari
- Department of Health Science and Technology, ETH Zürich, Switzerland
| | - I Martiel
- Department of Health Science and Technology, ETH Zürich, Switzerland
| | - R Negrini
- Department of Health Science and Technology, ETH Zürich, Switzerland
| | - R Mezzenga
- Department of Health Science and Technology, ETH Zürich, Switzerland
| | - M E Leser
- Nestlé Research Center, Vers-Chez-Les-Blanc, Lausanne 26 1000, Switzerland
| | - I Blank
- Nestlé Research Center, Vers-Chez-Les-Blanc, Lausanne 26 1000, Switzerland
| | - M Michel
- Nestlé Research Center, Vers-Chez-Les-Blanc, Lausanne 26 1000, Switzerland
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Unit cell structure of water-filled monoolein in inverted hexagonal mesophase in the presence of incorporated tricaprylin and entrapped lysozyme. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2015; 45:99-112. [DOI: 10.1007/s00249-015-1080-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Revised: 09/01/2015] [Accepted: 09/02/2015] [Indexed: 11/27/2022]
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14
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Borgheti-Cardoso LN, Depieri LV, Kooijmans SAA, Diniz H, Calzzani RAJ, Vicentini FTMDC, van der Meel R, Fantini MCDA, Iyomasa MM, Schiffelers RM, Bentley MVLB. An in situ gelling liquid crystalline system based on monoglycerides and polyethylenimine for local delivery of siRNAs. Eur J Pharm Sci 2015; 74:103-17. [PMID: 25917525 DOI: 10.1016/j.ejps.2015.04.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 04/16/2015] [Accepted: 04/20/2015] [Indexed: 12/11/2022]
Abstract
The development of delivery systems able to complex and release siRNA into the cytosol is essential for therapeutic use of siRNA. Among the delivery systems, local delivery has advantages over systemic administration. In this study, we developed and characterized non-viral carriers to deliver siRNA locally, based on polyethylenimine (PEI) as gene carrier, and a self-assembling drug delivery system that forms a gel in situ. Liquid crystalline formulations composed of monoglycerides (MO), PEI, propylene glycol (PG) and 0.1M Tris buffer pH 6.5 were developed and characterized by polarized light microscopy, Small Angle X-ray Scattering (SAXS), for their ability to form inverted type liquid crystalline phases (LC2) in contact with excess water, water absorption capacity, ability to complex with siRNA and siRNA release. In addition, gel formation in vivo was determined by subcutaneous injection of the formulations in mice. In water excess, precursor fluid formulations rapidly transformed into a viscous liquid crystalline phase. The presence of PEI influences the liquid crystalline structure of the LC2 formed and was crucial for complexing siRNA. The siRNA was released from the crystalline phase complexed with PEI. The release rate was dependent on the rate of water uptake. The formulation containing MO/PEI/PG/Tris buffer at 7.85:0.65:76.5:15 (w/w/w/w) complexed with 10 μM of siRNA, characterized as a mixture of cubic phase (diamond-type) and inverted hexagonal phase (after contact with excess water), showed sustained release for 7 days in vitro. In mice, in situ gel formation occurred after subcutaneous injection of the formulations, and the gels were degraded in 30 days. Initially a mild inflammatory process occurred in the tissue surrounding the gel; but after 14 days the tissue appeared normal. Taken together, this work demonstrates the rational development of an in situ gelling formulation for local release of siRNA.
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Affiliation(s)
- Lívia Neves Borgheti-Cardoso
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Lívia Vieira Depieri
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Sander A A Kooijmans
- Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Henrique Diniz
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | | | | | - Roy van der Meel
- Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Mamie Mizusaki Iyomasa
- Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Raymond M Schiffelers
- Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Maria Vitória Lopes Badra Bentley
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil.
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15
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Liang YL, Conn CE, Drummond CJ, Darmanin C. Uptake of the butyrate receptors, GPR41 and GPR43, in lipidic bicontinuous cubic phases suitable for in meso crystallization. J Colloid Interface Sci 2015; 441:78-84. [DOI: 10.1016/j.jcis.2014.11.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 11/03/2014] [Accepted: 11/04/2014] [Indexed: 10/24/2022]
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16
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Cohen-Avrahami M, Shames AI, Ottaviani MF, Aserin A, Garti N. On the correlation between the structure of lyotropic carriers and the delivery profiles of two common NSAIDs. Colloids Surf B Biointerfaces 2014; 122:231-240. [DOI: 10.1016/j.colsurfb.2014.04.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 04/25/2014] [Accepted: 04/29/2014] [Indexed: 01/20/2023]
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17
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Sagalowicz L, Guillot S, Acquistapace S, Schmitt B, Maurer M, Yaghmur A, de Campo L, Rouvet M, Leser M, Glatter O. Influence of vitamin E acetate and other lipids on the phase behavior of mesophases based on unsaturated monoglycerides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:8222-8232. [PMID: 23705681 DOI: 10.1021/la305052q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The phase behavior of the ternary unsaturated monoglycerides (UMG)-DL-α-tocopheryl acetate-water system has been studied. The effects of lipid composition in both bulk and dispersed lyotropic liquid crystalline phases and microemulsions were investigated. In excess water, progressive addition of DL-α-tocopheryl acetate to a binary UMG mixture results in the following phase sequence: reversed bicontinuous cubic phase, reversed hexagonal (H(II)) phase, and a reversed microemulsion. The action of DL-α-tocopheryl acetate is then compared to that of other lipids such as triolein, limonene, tetradecane, and DL-α-tocopherol. The impact of solubilizing these hydrophobic molecules on the UMG-water phase behavior shows some common features. However, the solubilization of certain molecules, like DL-α-tocopherol, leads to the presence of the reversed micellar cubic phase (space group number 227 and symmetry Fd3m) while the solubilization of others does not. These differences in phase behavior are discussed in terms of physical-chemical characteristics of the added lipid molecule and its interaction with UMG and water. From an applications point of view, phase behavior as a function of the solubilized content of guest molecules (lipid additive in our case) is crucial since macroscopic properties such as molecular release depend strongly on the phase present. The effect of two hydrophilic emulsifiers, used to stabilize the aqueous dispersions of UMG, was studied and compared. Those were Pluronic F127, which is the most commonly used stabilizer for these kinds of inverted type structures, and the partially hydrolyzed emulsifier lecithin (Emultop EP), which is a well accepted food-grade emulsifier. The phase behavior of particles stabilized by the partially hydrolyzed lecithin is similar to that of bulk sample at full hydration, but this emulsifier interacts significantly with the internal structure and affects it much more than F127.
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Affiliation(s)
- L Sagalowicz
- Nestlé Research Center, Vers-Chez-Les-Blanc, CH-1000 Lausanne 26, Switzerland.
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Recent Developments in the Production, Analysis, and Applications of Cubic Phases Formed by Lipids. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/b978-0-12-411515-6.00006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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19
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Negrini R, Mezzenga R. Diffusion, molecular separation, and drug delivery from lipid mesophases with tunable water channels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:16455-62. [PMID: 23116138 DOI: 10.1021/la303833s] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Lyotropic liquid crystals characterized by a bicontinuous cubic phase (BCP) have a structure characterized by interpenetrated water channels following triply periodic minimal surfaces, which can be stable in excess water conditions and thus suitable in a multitude of applications. The control of the water channels size in these systems has a direct impact on their use for drug delivery, crystallization, and membrane separation processes. In this work we carry out systematic diffusion studies to show how the control on the water channel dimensions directly correlates with the release and separation performance of bicontinuous cubic phases. Specifically, we tune the water channels diameter of the monolinolein/water system by adding different amounts of sucrose stearate, which, having hydration-enhancing properties, can shift the boundaries of the phase diagram. We then design a model bicontinuous cubic phase lipidic membrane of the Im3m space group, having a sugar ester to monolinolein ratio of 20%, and we follow the diffusion within its water channels, by using molecules that differ systematically in size and molecular conformation, and we demonstrate, for each class of molecules, a diffusion-enhanced process upon increase of the water channel diameter. Finally, we also show the ability of the bicontinuous cubic phase to efficiently and selectively separate nanoparticles of a target size, by choosing an amount of sucrose stearate for which the water channel diameter and the nanoparticle dimensions match, demonstrating the possible use of these systems as filtering membranes of tunable molecular cutoff.
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Affiliation(s)
- Renata Negrini
- Food and Soft Materials Science, Institute of Food, Nutrition & Health, ETH Zurich, Schmelzbergstrasse 9, CH-8092 Zürich, Switzerland
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Cohen-Avrahami M, Libster D, Aserin A, Garti N. Penetratin-induced transdermal delivery from HII mesophases of sodium diclofenac. J Control Release 2012; 159:419-28. [DOI: 10.1016/j.jconrel.2012.01.025] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2011] [Revised: 01/18/2012] [Accepted: 01/20/2012] [Indexed: 10/14/2022]
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Angelova A, Angelov B, Garamus VM, Couvreur P, Lesieur S. Small-Angle X-ray Scattering Investigations of Biomolecular Confinement, Loading, and Release from Liquid-Crystalline Nanochannel Assemblies. J Phys Chem Lett 2012; 3:445-457. [PMID: 26285865 DOI: 10.1021/jz2014727] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This Perspective explores the recent progress made by means of small-angle scattering methods in structural studies of phase transitions in amphiphilic liquid-crystalline systems with nanochannel architectures and outlines some future directions in the area of hierarchically organized and stimuli-responsive nanochanneled assemblies involving biomolecules. Time-resolved small-angle X-ray scattering investigations using synchrotron radiation enable monitoring of the structural dynamics, the modulation of the nanochannel hydration, as well as the key changes in the soft matter liquid-crystalline organization upon stimuli-induced phase transitions. They permit establishing of the inner nanostructure transformation kinetics and determination of the precise sizes of the hydrophobic membraneous compartments and the aqueous channel diameters in self-assembled network architectures. Time-resolved structural studies accelerate novel biomedical, pharmaceutical, and nanotechnology applications of nanochannel soft materials by providing better control of DNA, peptide and protein nanoconfinement, and release from diverse stimuli-responsive nanocarrier systems.
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Affiliation(s)
- Angelina Angelova
- †CNRS UMR8612 Physico-chimie-Pharmacotechnie-Biopharmacie, Univ Paris Sud 11, Châtenay-Malabry, F-92296 France
| | - Borislav Angelov
- ‡Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 16206 Prague, Czech Republic
| | - Vasil M Garamus
- §Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, 21502 Geesthacht, Germany
| | - Patrick Couvreur
- †CNRS UMR8612 Physico-chimie-Pharmacotechnie-Biopharmacie, Univ Paris Sud 11, Châtenay-Malabry, F-92296 France
| | - Sylviane Lesieur
- †CNRS UMR8612 Physico-chimie-Pharmacotechnie-Biopharmacie, Univ Paris Sud 11, Châtenay-Malabry, F-92296 France
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22
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Seddon AM, Lotze G, Plivelic TS, Squires AM. A Highly Oriented Cubic Phase Formed by Lipids under Shear. J Am Chem Soc 2011; 133:13860-3. [DOI: 10.1021/ja2053336] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Annela M. Seddon
- H.H. Wills Physics Laboratory, Tyndall Avenue, University of Bristol, Bristol BS8 1TL, United Kingdom
- Bristol Centre for Functional Nanomaterials, Nanoscience and Quantum Information Building, Tyndall Avenue, University of Bristol, Bristol BS8 1FD, United Kingdom
| | - Gudrun Lotze
- School of Chemistry, Whiteknights Campus, University of Reading, Reading RG6 6AD, United Kingdom
| | | | - Adam M. Squires
- School of Chemistry, Whiteknights Campus, University of Reading, Reading RG6 6AD, United Kingdom
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Venugopal E, Bhat SK, Vallooran JJ, Mezzenga R. Phase behavior of lipid-based lyotropic liquid crystals in presence of colloidal nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:9792-9800. [PMID: 21749073 DOI: 10.1021/la201767p] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have investigated the microstructure and phase behavior of monoglyceride-based lyotropic liquid crystals in the presence of hydrophilic silica colloidal particles of size comparable to or slightly exceeding the repeat units of the different liquid crystalline phases. Using small angle X-ray scattering (SAXS) and differential scanning calorimetry (DSC), we compare the structural properties of the neat mesophases with those of the systems containing silica colloidal particles. It is found that the colloidal particles always macrophase separate in inverse bicontinuous cubic phases of gyroid (Ia3d) and double diamond (Pn3m) symmetries. SAXS data for the inverse columnar hexagonal phase (H(II)) and lamellar phase (L(α)) suggest that a low volume fraction of the nanoparticles can be accommodated within the mesophases, but that at concentrations above a given threshold, the particles do macrophase separate also in these systems. The behavior is interpreted in terms of the enthalpic and entropic interactions of the nanoparticles with the lamellar and hexagonal phases, and we propose that, in the low concentration limit, the nanoparticles are acting as point defects within the mesophases and, upon further increase in concentration, initiate nucleation of nanoparticles clusters, leading to a macroscopic phase separation.
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Affiliation(s)
- Edakkal Venugopal
- Complex Fluids and Polymer Engineering, National Chemical Laboratory, Pune 411008, India
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