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Clinically Relevant Insulin Degludec and its Interaction with Polysaccharides: A Biophysical Examination. Polymers (Basel) 2020; 12:polym12020390. [PMID: 32050432 PMCID: PMC7077624 DOI: 10.3390/polym12020390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 01/28/2020] [Accepted: 01/30/2020] [Indexed: 11/17/2022] Open
Abstract
Protein polysaccharide complexes have been widely studied for multiple industrial applications and are popular due to their biocompatibility. Insulin degludec, an analogue of human insulin, exists as di-hexamer in pharmaceutical formulations and has the potential to form long multi-hexamers in physiological environment, which dissociate into monomers to bind with receptors on the cell membrane. This study involved complexation of two negatively charged bio-polymers xanthan and alginate with clinically-relevant insulin degludec (PIC). The polymeric complexations and interactions were investigated using biophysical methods. Intrinsic viscosity [η] and particle size distribution (PSD) of PIC increased significantly with an increase in temperature, contrary to the individual components indicating possible interactions. [η] trend was X > XA > PIC > A > IDeg. PSD trend was X > A > IDeg > XA > PIC. Zeta (ζ)- potential (with general trend of IDeg < A < XA < X ≈ PIC) revealed stable interaction at lower temperature which gradually changed with an increase in temperature. Likewise, sedimentation velocity indicated stable complexation at lower temperature. With an increase in time and temperature, changes in the number of peaks and area under curve were observed for PIC. Conclusively, stable complexation occurred among the three polymers at 4 °C and 18 °C and the complex dissociated at 37 °C. Therefore, the complex has the potential to be used as a drug delivery vehicle.
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Ritacco HA, Fernández-Leyes M, Domínguez C, Langevin D. Electric Birefringence of Aqueous Solutions of a Rigid Polyelectrolyte. Polarization Mechanisms and Anomalous Birefringence Signals. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01240] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hernán A. Ritacco
- Instituto
de Física del Sur (IFISUR), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET) and Departamento de
Física, Universidad Nacional del Sur (UNS), Av LN Alem
1253, 8000 Bahía
Blanca, Argentina
| | - Marcos Fernández-Leyes
- Instituto
de Física del Sur (IFISUR), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET) and Departamento de
Física, Universidad Nacional del Sur (UNS), Av LN Alem
1253, 8000 Bahía
Blanca, Argentina
| | - Claudia Domínguez
- Instituto
de Física del Sur (IFISUR), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET) and Departamento de
Física, Universidad Nacional del Sur (UNS), Av LN Alem
1253, 8000 Bahía
Blanca, Argentina
| | - Dominique Langevin
- Laboratoire
de Physique des Solides, CNRS, Université Paris Saclay, Université Paris-Sud, Bât 510, 91405 Orsay, France
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Mikac U, Sepe A, Baumgartner S, Kristl J. The Influence of High Drug Loading in Xanthan Tablets and Media with Different Physiological pH and Ionic Strength on Swelling and Release. Mol Pharm 2016; 13:1147-57. [DOI: 10.1021/acs.molpharmaceut.5b00955] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Urša Mikac
- Jožef Stefan
Institute, 1000 Ljubljana, Slovenia
| | - Ana Sepe
- Jožef Stefan
Institute, 1000 Ljubljana, Slovenia
| | - Saša Baumgartner
- Faculty
of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Julijana Kristl
- Faculty
of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia
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Petri DFS. Xanthan gum: A versatile biopolymer for biomedical and technological applications. J Appl Polym Sci 2015. [DOI: 10.1002/app.42035] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Denise F. S. Petri
- Departamento de Química Fundamental; Instituto de Química, Universidade de São Paulo; São Paulo 05513-970 Brazil
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Rinaudo M, Milas M, Bresolin T, Ganter J. Physical properties of xanthan, galactomannan and their mixtures in aqueous solutions. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19991400113] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Order–Disorder Conformational Transition of Xanthan Gum. POLYSACCHARIDES 2010. [DOI: 10.1201/9781420030822.ch17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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You Y, Ludescher RD. Effect of xanthan on the molecular mobility of amorphous sucrose detected by erythrosin B phosphorescence. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:709-716. [PMID: 19115955 DOI: 10.1021/jf802501m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Molecular mobility in amorphous solids is modulated by composition and environmental conditions such as temperature. Phosphorescence of erythrosin B was used to generate a mobility map of amorphous sucrose film doped with xanthan gum at weight ratios of xanthan/sucrose ranging from 0.0001 to 0.01. On the basis of analysis of the emission energy and lifetime of erythrosin B in pure sucrose and sucrose-xanthan films over the temperature range from 5 to 100 degrees C, we conclude that xanthan influences the molecular mobility as well as the dynamic site heterogeneity of amorphous sucrose in a dose-dependent fashion. At xanthan/sucrose weight ratios below approximately 0.0005, both emission energy and lifetime decreased and k(TS0) (the nonradiative decay rate of the triplet state) increased, indicating that xanthan increased the matrix molecular mobility. At weight ratios above 0.001, both emission energy and lifetime increased and k(TS0) decreased, indicating that xanthan decreased matrix mobility, reaching a plateau at weight ratios between 0.005 and 0.01. The concentration at which the effect of xanthan switched from increasing to decreasing mobility was similar to the concentration at which polymer chains overlapped in solution, suggesting that the dynamic changeover reflected the onset of chain overlap in the amorphous solid. Systematic trends in the emission bandwidth and lifetime heterogeneity and variations in the emission lifetime vs wavelength indicated that xanthan reduced the matrix dynamic site heterogeneity except at a weight ratio of 0.01. These data illustrate the complex effects of a polymer with a rigid structure and large side chains on the mobility of an amorphous, hydrogen-bonded sugar matrix.
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Affiliation(s)
- Yumin You
- Department of Food Science, Rutgers, The State University of New Jersey, New Brunswick, 08901-8520, USA
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Ropers MH, Novales B, Boué F, Axelos MAV. Polysaccharide/Surfactant complexes at the air-water interface - effect of the charge density on interfacial and foaming behaviors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:12849-12857. [PMID: 18950205 DOI: 10.1021/la802357m] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The binding of a cationic surfactant (hexadecyltrimethylammonium bromide, CTAB) to a negatively charged natural polysaccharide (pectin) at air-solution interfaces was investigated on single interfaces and in foams, versus the linear charge densities of the polysaccharide. Besides classical methods to investigate polymer/surfactant systems, we applied, for the first time concerning these systems, the analogy between the small angle neutron scattering by foams and the neutron reflectivity of films to measure in situ film thicknesses of foams. CTAB/pectin foam films are much thicker than the pure surfactant foam film but similar for high- and low-charged pectin/CTAB systems despite the difference in structure of complexes at interfaces. The improvement of the foam properties of CTAB bound to pectin is shown to be directly related to the formation of pectin-CTAB complexes at the air-water interface. However, in opposition to surface activity, there is no specific behavior for the highly charged pectin: foam properties depend mainly upon the bulk charge concentration, while the interfacial behavior is mainly governed by the charge density of pectin. For the highly charged pectin, specific cooperative effects between neighboring charged sites along the chain are thought to be involved in the higher surface activity of pectin/CTAB complexes. A more general behavior can be obtained at lower charge density either by using a low-charged pectin or by neutralizing the highly charged pectin in decreasing pH.
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Affiliation(s)
- M H Ropers
- UR1268 Biopolymeres Interactions Assemblages, INRA, F-44300 Nantes Cedex 3, France.
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Baumgartner S, Pavli M, Kristl J. Effect of calcium ions on the gelling and drug release characteristics of xanthan matrix tablets. Eur J Pharm Biopharm 2008; 69:698-707. [DOI: 10.1016/j.ejpb.2007.11.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2007] [Revised: 11/23/2007] [Accepted: 11/27/2007] [Indexed: 11/15/2022]
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Rinaudo M. Main properties and current applications of some polysaccharides as biomaterials. POLYM INT 2008. [DOI: 10.1002/pi.2378] [Citation(s) in RCA: 672] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Rinaudo M, Roure I, Milas M. Use of Steric Exclusion Chromatography to Characterize Hyaluronan, a Semirigid Polysaccharide. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2006. [DOI: 10.1080/10236669908009743] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M. Rinaudo
- a Centre de Recherches sur les Macromolécules Végétates, affiliated with Joseph Fourier University of Grenoble , CERMAV-CNRS, BP 53, 38041, Grenoble , Cedex , 9 , France
| | - I. Roure
- a Centre de Recherches sur les Macromolécules Végétates, affiliated with Joseph Fourier University of Grenoble , CERMAV-CNRS, BP 53, 38041, Grenoble , Cedex , 9 , France
| | - M. Milas
- a Centre de Recherches sur les Macromolécules Végétates, affiliated with Joseph Fourier University of Grenoble , CERMAV-CNRS, BP 53, 38041, Grenoble , Cedex , 9 , France
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Mazeau K, Rinaudo M. The prediction of the characteristics of some polysaccharides from molecular modeling. Comparison with effective behavior. Food Hydrocoll 2004. [DOI: 10.1016/j.foodhyd.2004.04.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
This paper concerns the influence of the chemical structure on the physical properties of some polysaccharides. Especially, we proposed to discuss the role of the substituents on these properties. In some cases, non-carbohydrate substituents play a minor role on rheological properties in the presence of a salt excess as shown on xanthan and succinoglycan. The rheology of aqueous solution of these stereoregular polysaccharides is controlled by the conformation (helical conformation) whose stability is not largely influenced by these substituents. On the other hand, the interaction between galactomannan and xanthan depends on the presence of acetyl substituents on xanthan but also on the xanthan conformation. However, for polymers such as gellan, XM-6 or BEC 1615, complete deacetylation induces the ability to form physical gels in given thermodynamic conditions. The presence of carbohydrate substituents or short side chains was also examined. Especially in the gellan family, the role of position of substitution (position 3 on the glucose unit C or position 6 on the A glucose) was presented. It is concluded that the substituents giving the higher stability for the helical conformation (higher DeltaH and Tm values) also cause a lower salt sensitivity for the helical stability. The role of the substituents on the properties is also described for natural polymers and their chemically or enzymatically modified derivatives.
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Affiliation(s)
- M Rinaudo
- Centre de Recherche sur les Macromolécules Végétales, CNRS, associated with Joseph Fourier University, BP 53, 38041 Grenoble Cedex 9, France.
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Rinaudo M. Relation between the molecular structure of some polysaccharides and original properties in sol and gel states. Food Hydrocoll 2001. [DOI: 10.1016/s0268-005x(01)00041-8] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Langevin D. Polyelectrolyte and surfactant mixed solutions. behavior at surfaces and in thin films. Adv Colloid Interface Sci 2001; 89-90:467-84. [PMID: 11215810 DOI: 10.1016/s0001-8686(00)00068-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Dilute mixed solutions of non-surface active anionic polymers (polyacrylamide and polystyrene sulfonate, xanthan) and various surfactants have been studied with several methods: surface tension, ellipsometry, X-ray and neutron reflectivity, thin film balance, surface and bulk rheology. A strong synergistic lowering of the surface tension is found with cationic surfactants in the concentration range where no appreciable complexation of surfactant and polymer occurs in the bulk solution (as seen from viscosity measurements). Despite appreciable differences between surface tension behaviour, the adsorbed layer is very similar for all the polymers: their thickness is small and the polymer chains are stretched along the surface. The surface tension behaviour of these polymers with non-ionic surfactants is also different. When the polymers are confined in thin films, the forces between surfaces are similar, and independent of surfactant nature: oscillatory forces are measured, which reflect the existence of a polymer network with a well defined mesh size. The connection of foam stability with surface and bulk complexation is far from clear.
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Affiliation(s)
- D Langevin
- Laboratoire de Physique des Solides, Université Paris sud, Orsay, France.
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Villain-Simonnet A, Milas M, Rinaudo M. A new bacterial polysaccharide (YAS34). I. Characterization of the conformations and conformational transition. Int J Biol Macromol 2000; 27:65-75. [PMID: 10704988 DOI: 10.1016/s0141-8130(99)00120-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper concerns the study of the conformational transition of a new exopolysaccharide (YAS34) using experimental techniques such as optical rotation, conductimetric and microcalorimetric measurements as a function of temperature. The behaviors of this polysaccharide in the acid or sodium salt form are compared; a deacetylated sample is also prepared to demonstrate the role of substituents. For the native structure (never heated), a conformational transition is observed but the deacetylated polysaccharide exhibits no ordered conformation. Multidetection size exclusion chromatography (SEC) analyses and conductimetric experiments allowed to determine the nature of each conformation and the molecular dimensions. From these results, it is suggested that the native conformation is a double helix which by heating over T(m) (temperature corresponding to half conformational transition) dissociates into disordered single chains. In the acid and sodium salt forms, by cooling below T(m), an ordered conformation is restored. This conformation seems to be an intramolecular double helix 'hairpin-like turn' (called renatured conformation). Nevertheless an irreversible denaturation is obtained progressively in the sodium salt form when the time of heating over T(m) increases. The conformation of the deacetylated polysaccharide corresponds to that of a single flexible chain (disordered conformation). The conformational transition for the native conformation was studied also in relation to the polyelectrolytic character of the polysaccharide: stability as a function of salt nature and salt and polymer concentrations was investigated for the polymer initially in the sodium and acid forms.
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Affiliation(s)
- A Villain-Simonnet
- Centre de Recherches sur les Macromolécules Végétales, CNRS, B.P. 53, affiliated with Joseph Fourier University, 38041, Grenoble, France
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Roure I, Rinaudo M, Milas M, Frollini E. Viscometric behaviour of polyelectrolytes in the presence of low salt concentration. POLYMER 1998. [DOI: 10.1016/s0032-3861(97)10274-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Barth HG, Boyes BE, Jackson C. Size Exclusion Chromatography and Related Separation Techniques. Anal Chem 1998. [DOI: 10.1021/a1980015t] [Citation(s) in RCA: 122] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Howard G. Barth
- Central Research and Development, DuPont Company, Experimental Station, P.O. Box 80228, Wilmington, Delaware 19880-0228, Little Falls Analytical DivisionNewport, Hewlett-Packard Company, 538 First State Boulevard, Newport, Delaware 19804, and Marshall Laboratory, DuPont Automative Products, 3401 Grays Ferry Avenue, Philadelphia, Pennsylvania 19146
| | - Barry E. Boyes
- Central Research and Development, DuPont Company, Experimental Station, P.O. Box 80228, Wilmington, Delaware 19880-0228, Little Falls Analytical DivisionNewport, Hewlett-Packard Company, 538 First State Boulevard, Newport, Delaware 19804, and Marshall Laboratory, DuPont Automative Products, 3401 Grays Ferry Avenue, Philadelphia, Pennsylvania 19146
| | - Christian Jackson
- Central Research and Development, DuPont Company, Experimental Station, P.O. Box 80228, Wilmington, Delaware 19880-0228, Little Falls Analytical DivisionNewport, Hewlett-Packard Company, 538 First State Boulevard, Newport, Delaware 19804, and Marshall Laboratory, DuPont Automative Products, 3401 Grays Ferry Avenue, Philadelphia, Pennsylvania 19146
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Rinaudo M, Roure I, Milas M, Malovikova A. Electrostatic Interactions in Aqueous Solutions of Ionic Polysaccharides. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 1997. [DOI: 10.1080/10236669708033937] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Fishman ML, Cescutti P, Fett WF, Osman SF, Hoagland PD, Chau HK. Screening the physical properties of novel Pseudomonas exopolysaccharides by HPSEC with multi-angle light scattering and viscosity detection. Carbohydr Polym 1997. [DOI: 10.1016/s0144-8617(97)00012-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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