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Thakur A, Jaiswal MK, Peak CW, Carrow JK, Gentry J, Dolatshahi-Pirouz A, Gaharwar AK. Injectable shear-thinning nanoengineered hydrogels for stem cell delivery. NANOSCALE 2016; 8:12362-72. [PMID: 27270567 DOI: 10.1039/c6nr02299e] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Injectable hydrogels are investigated for cell encapsulation and delivery as they can shield cells from high shear forces. One of the approaches to obtain injectable hydrogels is to reinforce polymeric networks with high aspect ratio nanoparticles such as two-dimensional (2D) nanomaterials. 2D nanomaterials are an emerging class of ultrathin materials with a high degree of anisotropy and they strongly interact with polymers resulting in the formation of shear-thinning hydrogels. Here, we present 2D nanosilicate reinforced kappa-carrageenan (κCA) hydrogels for cellular delivery. κCA is a natural polysaccharide that resembles native glycosaminoglycans and can form brittle hydrogels via ionic crosslinking. The chemical modification of κCA with photocrosslinkable methacrylate groups renders the formation of a covalently crosslinked network (MκCA). Reinforcing the MκCA with 2D nanosilicates results in shear-thinning characteristics, and enhanced mechanical stiffness, elastomeric properties, and physiological stability. The shear-thinning characteristics of nanocomposite hydrogels are investigated for human mesenchymal stem cell (hMSC) delivery. The hMSCs showed high cell viability after injection and encapsulated cells showed a circular morphology. The proposed shear-thinning nanoengineered hydrogels can be used for cell delivery for cartilage tissue regeneration and 3D bioprinting.
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Affiliation(s)
- Ashish Thakur
- Department of Biomedical Engineering, Texas A&M University, College Station, TX-77843, USA.
| | - Manish K Jaiswal
- Department of Biomedical Engineering, Texas A&M University, College Station, TX-77843, USA.
| | - Charles W Peak
- Department of Biomedical Engineering, Texas A&M University, College Station, TX-77843, USA.
| | - James K Carrow
- Department of Biomedical Engineering, Texas A&M University, College Station, TX-77843, USA.
| | - James Gentry
- Department of Biomedical Engineering, Texas A&M University, College Station, TX-77843, USA.
| | - Alireza Dolatshahi-Pirouz
- Technical University of Denmark, DTU Nanotech, Center for Nanomedicine and Theranostics, Kongens Lyngby, Region Hovedstaden, Denmark
| | - Akhilesh K Gaharwar
- Department of Biomedical Engineering, Texas A&M University, College Station, TX-77843, USA. and Department of Materials Sciences, Texas A&M University, College Station, TX-77843, USA and Center for Remote Health Technologies and Systems, Texas A&M University, College Station, TX 77843, USA
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52
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Valle BL, Omwancha WS, Neau SH, Wigent RJ. Use of к-carrageenan, chitosan and Carbopol 974P in extruded and spheronized pellets that are devoid of MCC. Drug Dev Ind Pharm 2016; 42:1903-16. [PMID: 27100683 DOI: 10.1080/03639045.2016.1181647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The search for excipients to replace microcrystalline cellulose (MCC) in the production of pellets by extrusion-spheronization in cases of drug incompatibility or the lack of pellet matrix disintegration forms the basis of this study. A combination of к-carrageenan as a spheronization aid, chitosan as a diluent and Carbopol(®) 974P as a binder in the production of pellets containing no MCC has been investigated using acetaminophen as a model drug. Design of experiments allowed assessment of formulation and processing effects on pellet responses that included size, shape, fines, yield and friability. Statistical analysis revealed that the main factors and some of the two-factor interactions had a significant effect on pellet characteristics. Formulations containing high levels of к-carrageenan required more water to produce a wetted mass with good extrudability and extrudate capable of being spheronized. Although only a low level of Carbopol was used in the formulation, it imparted cohesiveness to the wetted mass as well as the extrudate. Furthermore, it was discovered that Carbopol could act as an extrusion aid, enabling the wetted mass to flow easily through the extruder screen holes without building up heat. Spherical and rugged pellets were produced that met the immediate release criterion.
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Affiliation(s)
- Brenda L Valle
- a Philadelphia College of Pharmacy , University of the Sciences , Philadelphia , PA , USA ;,b Merck & Co Inc , Rahway , NJ , USA
| | | | - Steven H Neau
- a Philadelphia College of Pharmacy , University of the Sciences , Philadelphia , PA , USA
| | - Rodney J Wigent
- a Philadelphia College of Pharmacy , University of the Sciences , Philadelphia , PA , USA
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53
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Zhang J, Ji W, Liu T, Feng C. Tuning Syneresis Properties of Kappa-Carrageenan Hydrogel by C2-Symmetric Benzene-Based Supramolecular Gelators. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201500517] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Jia Zhang
- School of Materials Science and Engineering; State Key Lab of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Wei Ji
- School of Materials Science and Engineering; State Key Lab of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Tian Liu
- School of Materials Science and Engineering; State Key Lab of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
| | - Chuanliang Feng
- School of Materials Science and Engineering; State Key Lab of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
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54
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Schefer L, Adamcik J, Diener M, Mezzenga R. Supramolecular chiral self-assembly and supercoiling behavior of carrageenans at varying salt conditions. NANOSCALE 2015; 7:16182-8. [PMID: 26382663 DOI: 10.1039/c5nr04525h] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The self-assembly of anionic kappa and iota carrageenan polysaccharides in the presence of NaCl, KCl and CaCl2 is studied by high-resolution atomic force microscopy (AFM). A hierarchical supramolecular chirality amplification over various length scales is observed upon the addition of KCl, whereas in the presence of NaCl and CaCl2 the chains undergo solely a coil-helix transition with stiff kappa carrageenan and more flexible iota carrageenan helical conformations.
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Affiliation(s)
- Larissa Schefer
- Department of Health Sciences and Technology, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland.
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55
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Burgos-Díaz C, Rubilar M, Morales E, Medina C, Acevedo F, Marqués AM, Shene C. Naturally occurring protein-polysaccharide complexes from linseed (Linum usitatissimum) as bioemulsifiers. EUR J LIPID SCI TECH 2015. [DOI: 10.1002/ejlt.201500069] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- César Burgos-Díaz
- Technology and Processes Unit; Agriaquaculture Nutritional Genomic Center, CGNA; Temuco Chile
| | - Mónica Rubilar
- Scientific and Technological Bioresource Nucleus, BIOREN; Universidad de La Frontera; Temuco Chile
- Department of Chemical Engineering; Universidad de La Frontera; Temuco Chile
| | - Eduardo Morales
- Technology and Processes Unit; Agriaquaculture Nutritional Genomic Center, CGNA; Temuco Chile
| | - Camila Medina
- Scientific and Technological Bioresource Nucleus, BIOREN; Universidad de La Frontera; Temuco Chile
| | - Francisca Acevedo
- Scientific and Technological Bioresource Nucleus, BIOREN; Universidad de La Frontera; Temuco Chile
| | - Ana M. Marqués
- Laboratory of Microbiology, Faculty of Pharmacy; Universidad de Barcelona; Barcelona Spain
| | - Carolina Shene
- Scientific and Technological Bioresource Nucleus, BIOREN; Universidad de La Frontera; Temuco Chile
- Department of Chemical Engineering; Universidad de La Frontera; Temuco Chile
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56
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Preparation and characterization of к-carrageenan and xyloglucan blends for sustained release of a hydrophilic drug. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1360-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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57
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Ako K. Influence of elasticity on the syneresis properties of κ-carrageenan gels. Carbohydr Polym 2015; 115:408-14. [DOI: 10.1016/j.carbpol.2014.08.109] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 08/19/2014] [Accepted: 08/25/2014] [Indexed: 10/24/2022]
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58
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Wen C, Lu L, Li X. Enzymatic and ionic crosslinked gelatin/K-carrageenan IPN hydrogels as potential biomaterials. J Appl Polym Sci 2014. [DOI: 10.1002/app.40975] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Cai Wen
- School of Chemistry and Chemical Engineering; Southeast University; Nanjing 210018 China
| | - Lingling Lu
- School of Chemistry and Chemical Engineering; Southeast University; Nanjing 210018 China
| | - Xinsong Li
- School of Chemistry and Chemical Engineering; Southeast University; Nanjing 210018 China
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59
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NaCl and KCl phase diagrams of kappa/iota-hybrid carrageenans extracted from Mastocarpus stellatus. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2013.10.029] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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60
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Vitali L, Della Betta F, Costa ACO, Vaz FAS, Oliveira MAL, Pereira Vistuba J, Fávere VT, Micke GA. New multilayer coating using quaternary ammonium chitosan and κ-carrageenan in capillary electrophoresis: Application in fast analysis of betaine and methionine. Talanta 2014; 123:45-53. [DOI: 10.1016/j.talanta.2014.01.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 01/17/2014] [Accepted: 01/20/2014] [Indexed: 10/25/2022]
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61
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Synergistic effects of mixed salt on the gelation of κ-carrageenan. Carbohydr Polym 2014; 112:10-5. [PMID: 25129710 DOI: 10.1016/j.carbpol.2014.05.048] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 05/12/2014] [Accepted: 05/14/2014] [Indexed: 11/24/2022]
Abstract
The effect of the addition of calcium or sodium ions on the potassium induced gelation of κ-carrageenan (κ-car) is investigated using oscillatory shear rheology and turbidimetry. Both the gelation kinetics and the steady state shear moduli are investigated. Gelation in mixed salt solutions is compared with that in pure potassium and calcium solutions. It is shown that the elastic shear modulus increases with increasing pure KCl concentration, but decreases with increasing pure CaCl2 concentration. In mixed salts, gelation of κ-car is induced by potassium and addition of CaCl2 leads to an increase of the elastic modulus with increasing CaCl2 concentration. κ-Car gelled at low mixed salt concentrations for which it remained liquid in pure salt. At equivalent ionic strengths, the effect of adding NaCl on potassium induced gelation is much weaker. In pure KCl solutions, κ-car gels are transparent, but in pure CaCl2 they become increasingly turbid with increasing CaCl2 concentration. The turbidity of gels formed in mixed salts is intermediate.
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62
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Li L, Wang L, Shao Y, Tian Y, Li C, Li Y, Mao S. Elucidation of release characteristics of highly soluble drug trimetazidine hydrochloride from chitosan-carrageenan matrix tablets. J Pharm Sci 2013; 102:2644-54. [PMID: 23754467 DOI: 10.1002/jps.23632] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 04/28/2013] [Accepted: 05/16/2013] [Indexed: 11/11/2022]
Abstract
The aim of this study was to better understand the underlying drug release characteristics from matrix tablets based on the combination of chitosan (CS) and different types of carrageenans [kappa (κ)-CG, iota (ι)-CG, and lambda (λ)-CG]. Highly soluble trimetazidine hydrochloride (TH) was used as a model drug. First, characteristics of drug release from different formulations were investigated, and then in situ complexation capacity of CG with TH and CS was studied by differential scanning calorimetry and Fourier transform infrared spectroscopy. Erosion and swelling of matrix were also characterized to better understand the drug-release mechanisms. Effects of pH and ionic strength on drug release were also studied. It was found that not only ι-CG and λ-CG could reduce the burst release of TH by the effect of TH-CG interaction, CS-ι-CG- and CS-λ-CG-based polyelectrolyte film could further modify the controlled-release behavior, but not CS-κ-CG. High pH and high ionic strength resulted in faster drug release from CS-κ-CG- and CS-ι-CG-based matrix, but drug release from CS-λ-CG-based matrix was less sensitive to pH and ionic strength. In conclusion, CS-λ-CG-based matrix tablets are quite promising as controlled-release drug carrier based on multiple mechanisms.
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Affiliation(s)
- Liang Li
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
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63
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Mihaila SM, Gaharwar AK, Reis RL, Marques AP, Gomes ME, Khademhosseini A. Photocrosslinkable kappa-carrageenan hydrogels for tissue engineering applications. Adv Healthc Mater 2013; 2:895-907. [PMID: 23281344 DOI: 10.1002/adhm.201200317] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 10/04/2012] [Indexed: 12/27/2022]
Abstract
Kappa carrageenan (κ-CA) is a natural-origin polymer that closely mimics the glycosaminoglycan structure, one of the most important constituents of native tissues extracellular matrix. Previously, it has been shown that κ-CA can crosslink via ionic interactions rendering strong, but brittle hydrogels. In this study, we introduce photocrosslinkable methacrylate moieties on the κ-CA backbone to create physically and chemically crosslinked hydrogels highlighting their use in the context of tissue engineering. By varying the degree of methacrylation, the effect on hydrogel crosslinking was investigated in terms of hydration degree, dissolution profiles, morphological, mechanical, and rheological properties. Furthermore, the viability of fibroblast cells cultured inside the photocrosslinked hydrogels was investigated. The combination of chemical and physical crosslinking procedures enables the formation of hydrogels with highly versatile physical and chemical properties, while maintaining the viability of encapsulated cells. To our best knowledge, this is the first study reporting the synthesis of photocrosslinkable κ-CA with controllable compressive moduli, swelling ratios and pore size distributions. Moreover, by micromolding approaches, spatially controlled geometries and cell distribution patterns could be obtained, thus enabling the development of cell-material platforms that can be applied and tailored to a broad range of tissue engineering strategies.
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Affiliation(s)
- Silvia M. Mihaila
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, 02139, USA
- 3B's Research Group‐Biomaterials, Biodegradables and Biomimetics, University of Minho, Avepark‐Zona Industrial da Gandra, S. Cláudio do Barco, 4806‐09, Caldas das Taipas, Guimarães, Portugal and ICVS/3B's‐PT, Government Associate Laboratory, Braga/Guimarães, Portugal
- Harvard‐MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Akhilesh K. Gaharwar
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Rui L. Reis
- 3B's Research Group‐Biomaterials, Biodegradables and Biomimetics, University of Minho, Avepark‐Zona Industrial da Gandra, S. Cláudio do Barco, 4806‐09, Caldas das Taipas, Guimarães, Portugal and ICVS/3B's‐PT, Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Alexandra P. Marques
- 3B's Research Group‐Biomaterials, Biodegradables and Biomimetics, University of Minho, Avepark‐Zona Industrial da Gandra, S. Cláudio do Barco, 4806‐09, Caldas das Taipas, Guimarães, Portugal and ICVS/3B's‐PT, Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Manuela E. Gomes
- 3B's Research Group‐Biomaterials, Biodegradables and Biomimetics, University of Minho, Avepark‐Zona Industrial da Gandra, S. Cláudio do Barco, 4806‐09, Caldas das Taipas, Guimarães, Portugal and ICVS/3B's‐PT, Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Ali Khademhosseini
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, 02139, USA
- Harvard‐MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
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64
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Zhao Q, Brenner T, Matsukawa S. Molecular mobility and microscopic structure changes in κ-carrageenan solutions studied by gradient NMR. Carbohydr Polym 2013; 95:458-64. [PMID: 23618293 DOI: 10.1016/j.carbpol.2013.02.049] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/21/2013] [Accepted: 02/26/2013] [Indexed: 10/27/2022]
Abstract
Changes in the molecular mobility of κ-carrageenan were observed by the pulsed field gradient stimulated echo (PGSTE) and Carr-Purcell-Meiboom-Gill (CPMG) methods for elucidating the molecular aspect of the sol-to-gel transition. The echo signal intensity of κ-carrageenan without a gradient, Ikap(0), decreased steeply near the sol-to-gel temperature (Tsg), suggesting that κ-carrageenan chains formed aggregates and a network structure. Below Tsg, the spin-spin relaxation time T2 and the diffusion coefficient of κ-carrageenan (Dkap) increased with decreasing temperature, indicating that the solute κ-carrageenan chains have a lower molecular weight Mw than chains involved in the aggregation. The diffusion coefficient of pullulan (Dpul) added as a probe molecule in κ-carrageenan solutions was measured, and the characteristic hydrodynamic screening length, ξ, was then estimated from the degree of diffusion restriction. Below a certain temperature, Dkap reached a higher value than that of Dpul, suggesting that the Mw of solute κ-carrageenan became lower than that of pullulan. GPC measurements confirmed the presence of κ-carrageenan chains with a lower Mw than that of pullulan. A simple physical model of the structural change in κ-carrageenan solution was proposed with a bimodal distribution of κ-carrageenan with higher and lower Mw than the pullulan probe. The higher Mw chains form the gel network restricting the probe's diffusion, and the lower Mw chains increase the effective viscosity. The concentration of the high Mw solute κ-carrageenan chains in 1%, 2% and 4% κ-carrageenan solutions was estimated from Ikap(0) and the total κ-carrageenan concentration, and the relation with pullulan diffusion was studied.
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Affiliation(s)
- Qiuhua Zhao
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Tokyo 108-8477, Japan
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65
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Popa EG, Caridade SG, Mano JF, Reis RL, Gomes ME. Chondrogenic potential of injectable κ-carrageenan hydrogel with encapsulated adipose stem cells for cartilage tissue-engineering applications. J Tissue Eng Regen Med 2013; 9:550-63. [PMID: 23303734 DOI: 10.1002/term.1683] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 11/14/2012] [Indexed: 11/11/2022]
Abstract
Due to the limited self-repair capacity of cartilage, regenerative medicine therapies for the treatment of cartilage defects must use a significant amount of cells, preferably applied using a hydrogel system that can promise their delivery and functionality at the specific site. This paper discusses the potential use of κ-carrageenan hydrogels for the delivery of stem cells obtained from adipose tissue in the treatment of cartilage tissue defects. The developed hydrogels were produced by an ionotropic gelation method and human adipose stem cells (hASCs) were encapsulated in 1.5% w/v κ-carrageenan solution at a cell density of 5 × 10(6) cells/ml. The results from the analysis of the cell-encapsulating hydrogels, cultured for up to 21 days, indicated that κ-carrageenan hydrogels support the viability, proliferation and chondrogenic differentiation of hASCs. Additionally, the mechanical analysis demonstrated an increase in stiffness and viscoelastic properties of κ-carrageenan gels with their encapsulated cells with increasing time in culture with chondrogenic medium. These results allowed the conclusion that κ-carrageenan exhibits properties that enable the in vitro functionality of encapsulated hASCs and thus may provide the basis for new successful approaches for the treatment of cartilage defects.
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Affiliation(s)
- Elena G Popa
- 3Bs Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Guimarães, Portugal; ICVS/3Bs - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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66
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Viscoelastic behavior and microstructure of aqueous mixtures of cross-linked waxy maize starch, whey protein isolate and κ-carrageenan. Food Hydrocoll 2012. [DOI: 10.1016/j.foodhyd.2011.12.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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67
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Outstanding Molecular Size Recognition and Regulation of Water Permeability on K-Carrageenan-Pullulan Membrane Involved in Synergistic Design of Composite Polysaccharides–Structure. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.proeng.2012.07.523] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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68
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Thermoreversible behavior of κ-carrageenan and its apatite-forming ability in simulated body fluid. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2011.05.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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69
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Influence of concentration, ionic strength and pH on zeta potential and mean hydrodynamic diameter of edible polysaccharide solutions envisaged for multinanolayered films production. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.03.001] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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70
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Pavli M, Vrečer F, Baumgartner S. Matrix tablets based on carrageenans with dual controlled release of doxazosin mesylate. Int J Pharm 2010; 400:15-23. [DOI: 10.1016/j.ijpharm.2010.08.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2010] [Revised: 08/06/2010] [Accepted: 08/13/2010] [Indexed: 10/19/2022]
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71
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Texture and rheological characterization of kappa and iota carrageenan in the presence of counter ions. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.04.024] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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72
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Abad L, Okabe S, Shibayama M, Kudo H, Saiki S, Aranilla C, Relleve L, de la Rosa A. Comparative studies on the conformational change and aggregation behavior of irradiated carrageenans and agar by dynamic light scattering. Int J Biol Macromol 2008; 42:55-61. [DOI: 10.1016/j.ijbiomac.2007.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2007] [Accepted: 09/14/2007] [Indexed: 11/25/2022]
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73
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Mangione MR, Giacomazza D, Cavallaro G, Bulone D, Martorana V, San Biagio PL. Relation between structural and release properties in a polysaccharide gel system. Biophys Chem 2007; 129:18-22. [PMID: 17512653 DOI: 10.1016/j.bpc.2007.04.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2007] [Revised: 04/26/2007] [Accepted: 04/26/2007] [Indexed: 10/23/2022]
Abstract
The potential utility of kappa-carrageenan gels for preparing drug release devices is here shown. Structural properties of kappa-carrageenan gels prepared with different salt composition and containing Ketoprofen sodium salt, as model drug, have been evaluated with static light scattering and rheological measurements. These properties have been correlated with release profiles in vitro at pH 5.5. Release properties from gelled matrices have been compared with those obtained by two commercial products containing the same drug. Results show that: i) in this system it is possible to easily control the gel texture by using different cationic concentration; ii) the kinetics of drug release by kappa-carrageenan gels are dependent on the structural properties of matrices; iii) in the typical interval time used in classical local applications, all gel samples release the loaded drug almost completely, at difference with the commercial products. All these findings can provide useful suggestions for the realization of classical topical release systems.
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Affiliation(s)
- M R Mangione
- CNR, Istituto di Biofisica @ Palermo, Via Ugo La Malfa, 153 I-90146 Palermo, Italy
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74
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75
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Malafaya PB, Silva GA, Reis RL. Natural-origin polymers as carriers and scaffolds for biomolecules and cell delivery in tissue engineering applications. Adv Drug Deliv Rev 2007; 59:207-33. [PMID: 17482309 DOI: 10.1016/j.addr.2007.03.012] [Citation(s) in RCA: 804] [Impact Index Per Article: 47.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2007] [Accepted: 03/28/2007] [Indexed: 12/11/2022]
Abstract
The present paper intends to overview a wide range of natural-origin polymers with special focus on proteins and polysaccharides (the systems more inspired on the extracellular matrix) that are being used in research, or might be potentially useful as carriers systems for active biomolecules or as cell carriers with application in the tissue engineering field targeting several biological tissues. The combination of both applications into a single material has proven to be very challenging though. The paper presents also some examples of commercially available natural-origin polymers with applications in research or in clinical use in several applications. As it is recognized, this class of polymers is being widely used due to their similarities with the extracellular matrix, high chemical versatility, typically good biological performance and inherent cellular interaction and, also very significant, the cell or enzyme-controlled degradability. These biocharacteristics classify the natural-origin polymers as one of the most attractive options to be used in the tissue engineering field and drug delivery applications.
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Affiliation(s)
- Patrícia B Malafaya
- 3B's Research Group, Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, University of Minho, Campus de Gualtar, Braga, Portugal.
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Sankalia MG, Mashru RC, Sankalia JM, Sutariya VB. Physicochemical characterization of papain entrapped in ionotropically cross-linked kappa-carrageenan gel beads for stability improvement using Doehlert shell design. J Pharm Sci 2006; 95:1994-2013. [PMID: 16850431 DOI: 10.1002/jps.20665] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This work examines the influence of various process parameters on papain entrapped in cross-linked kappa-carrageenan beads for improvement of its stability. A Doehlert shell design (DSD) was employed to investigate the effect of three process variables, namely kappa-carrageenan concentration, KCl concentration, and hardening time, on the entrapment, time required for 50% enzyme release (T50), time required for 90% enzyme release (T90), and particle size. The beads were prepared by dropping the kappa-carrageenan containing papain into a magnetically stirred KCl solution. Topographical characterization was carried out by scanning electron microscopy and entrapment was confirmed by Fourier transform infrared spectroscopy and differential scanning calorimetry. Stability testing was carried out according to the International Conference on Harmonization (ICH) guidelines for zone III and IV. A polymeric matrix was prepared with kappa-carrageenan (3.5% w/v) and potassium chloride (0.5 M) using the ionotropic gelation method, with a hardening time of 20 min. Beads characterized by a spherical disc shape with a collapsed center, an absence of aggregates, an entrapment of 82.75%, a T90 value of 55.36 min, and a composite index of 88.55 were produced. The shelf-life of the enzyme-loaded beads was found to increase to 3.63 years compared with 1.01 years for the conventional formulation. It can be inferred that the proposed methodology can be used to prepare papain-loaded kappa-carrageenan beads for stability improvement.
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Affiliation(s)
- Mayur G Sankalia
- Pharmacy Department, Centre of Relevance and Excellence in Novel Drug Delivery Systems, G. H. Patel Building, Donor's Plaza, The M. S. University of Baroda, Vadodara 390 002, India.
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