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Qin X, Zhao Z, Deng J, Zhao Y, Liang S, Yi Y, Li J, Wei Y. Tough, conductive hydrogels based on gelatin and oxidized sodium carboxymethyl cellulose as flexible sensors. Carbohydr Polym 2024; 335:121920. [PMID: 38616070 DOI: 10.1016/j.carbpol.2024.121920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 04/16/2024]
Abstract
Natural polymer-based hydrogels have been wildly used in electronic skin, health monitoring and human motion sensing. However, the construction of hydrogel with excellent mechanical strength and electrical conductivity totally using natural polymers still faces many challenges. In this paper, gelatin and oxidized sodium carboxymethylcellulose were used to synthesize a double-network hydrogel through the dynamic Schiff base bonds. Then, the mechanical strength of the hydrogel was further enhanced by immersing it in an ammonium sulfate solution based on the Hofmeister effect between gelatin and salt. Finally, the gelatin/oxidized sodium carboxymethylcellulose hydrogel exhibited high tensile properties (614 %), tensile fracture strength (2.6 MPa), excellent compressive fracture strength (64 MPa), and compressive toughness (4.28 MJ/m3). Also, the electrical conductivity reached 3.94 S/m. The hydrogel after salt soaked was fabricated as strain sensors, which could accurately monitor the movement of many joints in the human body, such as fingers, wrists, elbows, neck, and throat. Therefore, the designed hydrogel fully originated from natural polymers and has great application potential in motion detection and information recording.
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Affiliation(s)
- Xuzhe Qin
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, PR China
| | - Zhijie Zhao
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, PR China
| | - Jinxuan Deng
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, PR China
| | - Yupeng Zhao
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, PR China
| | - Shuhao Liang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, PR China
| | - Yunfeng Yi
- Southeast Hospital of Xiamen University, Zhangzhou 363000, Fujian Province, PR China.
| | - Junjie Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China; Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China.
| | - Yuping Wei
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, PR China; Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China.
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2
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Słyk Ż, Wrzesień R, Barszcz S, Gawrychowski K, Małecki M. Adeno-associated virus vector hydrogel formulations for brain cancer gene therapy applications. Biomed Pharmacother 2024; 170:116061. [PMID: 38154269 DOI: 10.1016/j.biopha.2023.116061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 12/30/2023] Open
Abstract
Gelatin-based formulations are utilized in neurosurgical procedures, with Medisponge® serving as an illustration of a secure and biocompatible hemostatic formulation. Noteworthy are combined hemostatic products that integrate pharmacological agents with gelatin. Gelatin matrices, which host biologically active substances, provide a platform for a variety of molecules. Biopolymers function as carriers for chemicals and genes, a facet particularly pertinent in brain cancer therapy, as gene therapy complement conventional approaches. The registration of Zolgensma underscores the efficacy of rAAV vectors in therapeutic gene delivery to the CNS. rAAVs, renowned for their safety, stability, and neuron-targeting capabilities, predominate in CNS gene therapy studies. The effectiveness of rAAV vector therapy varies based on the serotype and administration route. Local gene therapy employing hydrogel (e.g., post-tumor resection) enables the circumvention of the blood-brain barrier and restricts formulation diffusion. This study formulates gelatin rAAV gene formulations and evaluates vector transduction potential. Transduction efficiency was assessed using ex vivo mouse brains and in vitro cancer cell lines. In vitro, the transduction of rAAV vectors in gelatin matrices was quantified through qPCR, measuring the itr and Gfp expression. rAAVDJ and rAAV2 demonstrated superior transduction in ex vivo and in vitro models. Among the cell lines tested (Hs683, B16-F10, NIH:OVCAR-3), gelatin matrix F1 exhibited selective transduction, particularly with Hs683 human glioma cells, surpassing the performance Medisponge®. This research highlights the exploration of local brain cancer therapy, emphasizing the potential of gelatin as an rAAV vector carrier for gene therapy. The functional transduction activity of gelatin rAAV formulations is demonstrated.
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Affiliation(s)
- Żaneta Słyk
- Department of Applied Pharmacy, Faculty of Pharmacy, Medical University of Warsaw, Warsaw, Poland; Laboratory of Gene Therapy, Faculty of Pharmacy, Medical University of Warsaw, Warsaw, Poland.
| | - Robert Wrzesień
- Central Laboratory of Experimental Animals, Center for Preclinical Research and Technology, Medical University of Warsaw, Warsaw, Poland
| | - Sławomir Barszcz
- Department of Neurosurgery, Children's Clinical Hospital, University Clinical Centre of the Medical University of Warsaw, Warsaw, Poland
| | - Krzysztof Gawrychowski
- Department of Applied Pharmacy, Faculty of Pharmacy, Medical University of Warsaw, Warsaw, Poland
| | - Maciej Małecki
- Department of Applied Pharmacy, Faculty of Pharmacy, Medical University of Warsaw, Warsaw, Poland; Laboratory of Gene Therapy, Faculty of Pharmacy, Medical University of Warsaw, Warsaw, Poland
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3
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Ye R, Zhang Z, Wang H, Suo T. Discriminating Various Edible Gelatin with a Chemical Oscillator. FOOD ANAL METHOD 2023. [DOI: 10.1007/s12161-022-02443-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Liu M, Zhang W, Chen Z, Ding Y, Sun B, Wang H, Mo X, Wu J. Mechanisms of magnesium oxide-incorporated electrospun membrane modulating inflammation and accelerating wound healing. J Biomed Mater Res A 2023; 111:132-151. [PMID: 36205298 DOI: 10.1002/jbm.a.37453] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 09/21/2022] [Accepted: 09/27/2022] [Indexed: 11/08/2022]
Abstract
Previously, we demonstrated that magnesium oxide (MgO)-incorporated electrospun membranes show powerful antibacterial activity and promote wound healing, but the underlying mechanisms have not been entirely understood. Herein, we investigated the relationship between structure and function of MgO-incorporated membranes and interrogated critical bioactive cues that contribute to accelerated wound healing and functional restoration. Our results show that MgO-incorporated membranes exhibit good flexibility and improved water vapor transmission rates (WVTRs) and sustained Mg2+ release in a simulated model of wounds. MgO-incorporated membranes modulate macrophage phenotype to downregulate inflammatory response, contributing to alleviated inflammation and creating a favorable microenvironment for wound healing. Specifically, MgO-incorporated membranes stimulate macrophages to shift to a pro-healing M2 phenotype and upregulate pro-healing cytokine of transforming growth factor-beta 1 (TGF-β1) and downregulate pro-inflammatory cytokines under lipopolysaccharide (LPS) challenge conditions. Together with increased TGF-β1 by macrophages, MgO-incorporated membranes significantly boost the proliferation of fibroblasts and upregulate collagen production, thus driving granulation tissue formation and wound closure. MgO-incorporated membranes promote angiogenesis by promoting tube formation and upregulating vascular endothelial growth factor (VEGF) production of endothelial cells. Rapid epithelialization of regenerated skin tissue is attributed to the balanced phenotype of keratinocytes between proliferative and terminally differentiated populations. In addition to coordinating keratinocyte phenotype, MgO-incorporated membranes reduce the expression of inflammatory cytokine interleukin 1-alpha (IL-1α) therefore promoting hair follicle regeneration. These data provide mechanisms of MgO-incorporated membranes that inhibit bacterial infection, alleviate inflammation, facilitate extracellular matrix production and epithelialization, and potentiate hair follicle regeneration.
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Affiliation(s)
- Mingyue Liu
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, China
| | - Weixing Zhang
- Department of Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhe Chen
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, China
| | - Yangfan Ding
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, China
| | - Binbin Sun
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, China
| | - Hongsheng Wang
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, China
| | - Xiumei Mo
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, China
| | - Jinglei Wu
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, China
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5
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Biomimetic and Bioactive Small Diameter Tubular Scaffolds for Vascular Tissue Engineering. Biomimetics (Basel) 2022; 7:biomimetics7040199. [PMID: 36412727 PMCID: PMC9680506 DOI: 10.3390/biomimetics7040199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022] Open
Abstract
The present work aimed at the production and characterization of small caliber biomimetic and bioactive tubular scaffolds, which are able to favor the endothelialization process, and therefore potentially be suitable for vascular tissue engineering. The tubular scaffolds were produced using a specially designed mold, starting from a gelatin/gellan/elastin (GGE) blend, selected to mimic the composition of the extracellular matrix of native blood vessels. GGE scaffolds were obtained through freeze-drying and subsequent cross-linking. To obtain systems capable of promoting endothelization, the scaffolds were functionalized using two different bioactive peptides, Gly-Arg-Gly-Asp-Ser-Pro (GRGSDP) and Arg-Glu-Asp-Val (REDV). A complete physicochemical, mechanical, functional, and biological characterization of the developed scaffolds was performed. GGE scaffolds showed a good porosity, which could promote cell infiltration and proliferation and a dense external surface, which could avoid bleeding. Moreover, developed scaffolds showed good hydrophilicity, an elastic behavior similar to natural vessels, suitability for sterilization by an ISO accepted treatment, and an adequate suture retention strength. In vitro cell culture tests showed no cytotoxic activity against 3T3 fibroblasts. The functionalization with the REDV peptide favored the adhesion and growth of endothelial cells, while GRGDSP-modified scaffolds represented a better substrate for fibroblasts.
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Heng TT, Tey JY, Soon KS, Woo KK. Utilizing Fish Skin of Ikan Belida (Notopterus lopis) as a Source of Collagen: Production and Rheology Properties. Mar Drugs 2022; 20:md20080525. [PMID: 36005530 PMCID: PMC9410226 DOI: 10.3390/md20080525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022] Open
Abstract
Collagen hydrogels have been extensively applied in biomedical applications. However, their mechanical properties are insufficient for such applications. Our previous study showed improved mechanical properties when collagen was blended with alginate. The current study aims to analyze the physico-chemical properties of collagen-alginate (CA) films such as swelling, porosity, denaturation temperature (Td), and rheology properties. Collagen was prepared from discarded fish skin of Ikan Belida (Notopterus lopis) that was derived from fish ball manufacturing industries and cross-linked with alginate from brown seaweed (Sargasum polycystum) of a local species as a means to benefit the downstream production of marine industries. CA hydrogels were fabricated with ratios (v/v) of 1:1, 1:4, 3:7, 4:1, and 7:3 respectively. FTIR spectrums of CA film showed an Amide I shift of 1636.12 cm−1 to 1634.64 cm−1, indicating collagen-alginate interactions. SEM images of CA films show a porous structure that varied from pure collagen. DSC analysis shows Td was improved from 61.26 °C (collagen) to 83.11 °C (CA 3:7). CA 4:1 swelled nearly 800% after 48 h, correlated with the of hydrogels porosity. Most CA demonstrated visco-elastic solid characteristics with greater storage modulus (G′) than lost modulus (G″). Shear thinning and non-Newtonian behavior was observed in CA with 0.4% to 1.0% (w/v) CaCl2. CA hydrogels that were derived from discarded materials shows promising potential to serve as a wound dressing or ink for bio printing in the future.
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Affiliation(s)
- Tzen T. Heng
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras, Kajang 43000, Selangor, Malaysia
| | - Jing Y. Tey
- Department of Mechanical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras, Kajang 43000, Selangor, Malaysia
| | - Kean S. Soon
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras, Kajang 43000, Selangor, Malaysia
| | - Kwan K. Woo
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras, Kajang 43000, Selangor, Malaysia
- Correspondence:
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7
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Using near-infrared spectroscopy to determine moisture content, gel strength, and viscosity of gelatin. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106627] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Zhao X, Chen X, Yuk H, Lin S, Liu X, Parada G. Soft Materials by Design: Unconventional Polymer Networks Give Extreme Properties. Chem Rev 2021; 121:4309-4372. [PMID: 33844906 DOI: 10.1021/acs.chemrev.0c01088] [Citation(s) in RCA: 308] [Impact Index Per Article: 102.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hydrogels are polymer networks infiltrated with water. Many biological hydrogels in animal bodies such as muscles, heart valves, cartilages, and tendons possess extreme mechanical properties including being extremely tough, strong, resilient, adhesive, and fatigue-resistant. These mechanical properties are also critical for hydrogels' diverse applications ranging from drug delivery, tissue engineering, medical implants, wound dressings, and contact lenses to sensors, actuators, electronic devices, optical devices, batteries, water harvesters, and soft robots. Whereas numerous hydrogels have been developed over the last few decades, a set of general principles that can rationally guide the design of hydrogels using different materials and fabrication methods for various applications remain a central need in the field of soft materials. This review is aimed at synergistically reporting: (i) general design principles for hydrogels to achieve extreme mechanical and physical properties, (ii) implementation strategies for the design principles using unconventional polymer networks, and (iii) future directions for the orthogonal design of hydrogels to achieve multiple combined mechanical, physical, chemical, and biological properties. Because these design principles and implementation strategies are based on generic polymer networks, they are also applicable to other soft materials including elastomers and organogels. Overall, the review will not only provide comprehensive and systematic guidelines on the rational design of soft materials, but also provoke interdisciplinary discussions on a fundamental question: why does nature select soft materials with unconventional polymer networks to constitute the major parts of animal bodies?
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Affiliation(s)
- Xuanhe Zhao
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.,Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Xiaoyu Chen
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hyunwoo Yuk
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Shaoting Lin
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Xinyue Liu
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - German Parada
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Rosellini E, Madeddu D, Barbani N, Frati C, Graiani G, Falco A, Lagrasta C, Quaini F, Cascone MG. Development of Biomimetic Alginate/Gelatin/Elastin Sponges with Recognition Properties toward Bioactive Peptides for Cardiac Tissue Engineering. Biomimetics (Basel) 2020; 5:biomimetics5040067. [PMID: 33322426 PMCID: PMC7768388 DOI: 10.3390/biomimetics5040067] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/16/2020] [Accepted: 12/04/2020] [Indexed: 12/12/2022] Open
Abstract
In recent years, there has been an increasing interest toward the covalent binding of bioactive peptides from extracellular matrix proteins on scaffolds as a promising functionalization strategy in the development of biomimetic matrices for tissue engineering. A totally new approach for scaffold functionalization with peptides is based on Molecular Imprinting technology. In this work, imprinted particles with recognition properties toward laminin and fibronectin bioactive moieties were synthetized and used for the functionalization of biomimetic sponges, which were based on a blend of alginate, gelatin, and elastin. Functionalized sponges underwent a complete morphological, physicochemical, mechanical, functional, and biological characterization. Micrographs of functionalized sponges showed a highly porous structure and a quite homogeneous distribution of imprinted particles on their surface. Infrared and thermal analyses pointed out the presence of interactions between blend components. Biodegradation and mechanical properties appeared adequate for the aimed application. The results of recognition tests showed that the deposition on sponges did not alter the specific recognition and binding behavior of imprinted particles. In vitro biological characterization with cardiac progenitor cells showed that early cell adherence was promoted. In vivo analysis showed that developed scaffolds improved cardiac progenitor cell adhesion and differentiation toward myocardial phenotypes.
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Affiliation(s)
- Elisabetta Rosellini
- Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino, 56126 Pisa, Italy; (N.B.); (M.G.C.)
- Correspondence: ; Tel.: +39-050-2217908
| | - Denise Madeddu
- Department of Medicine and Surgery, University-Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy; (D.M.); (C.F.); (G.G.); (A.F.); (C.L.); (F.Q.)
| | - Niccoletta Barbani
- Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino, 56126 Pisa, Italy; (N.B.); (M.G.C.)
| | - Caterina Frati
- Department of Medicine and Surgery, University-Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy; (D.M.); (C.F.); (G.G.); (A.F.); (C.L.); (F.Q.)
| | - Gallia Graiani
- Department of Medicine and Surgery, University-Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy; (D.M.); (C.F.); (G.G.); (A.F.); (C.L.); (F.Q.)
| | - Angela Falco
- Department of Medicine and Surgery, University-Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy; (D.M.); (C.F.); (G.G.); (A.F.); (C.L.); (F.Q.)
| | - Costanza Lagrasta
- Department of Medicine and Surgery, University-Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy; (D.M.); (C.F.); (G.G.); (A.F.); (C.L.); (F.Q.)
| | - Federico Quaini
- Department of Medicine and Surgery, University-Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy; (D.M.); (C.F.); (G.G.); (A.F.); (C.L.); (F.Q.)
| | - Maria Grazia Cascone
- Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino, 56126 Pisa, Italy; (N.B.); (M.G.C.)
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Rosellini E, Barbani N, Frati C, Madeddu D, Massai D, Morbiducci U, Lazzeri L, Falco A, Graiani G, Lagrasta C, Audenino A, Cascone MG, Quaini F. IGF-1 loaded injectable microspheres for potential repair of the infarcted myocardium. J Biomater Appl 2020; 35:762-775. [PMID: 32772783 DOI: 10.1177/0885328220948501] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The use of injectable scaffolds to repair the infarcted heart is receiving great interest. Thermosensitive polymers, in situ polymerization, in situ cross-linking, and self-assembling peptides are the most investigated approaches to obtain injectability.Aim of the present work was the preparation and characterization of a novel bioactive scaffold, in form of injectable microspheres, for cardiac repair. Gellan/gelatin microspheres were prepared by a water-in-oil emulsion and loaded by adsorption with Insulin-like growth factor 1 to promote tissue regeneration. Obtained microspheres underwent morphological, physicochemical and biological characterization, including cell culture tests in static and dynamic conditions and in vivo tests. Morphological analysis of the microspheres showed a spherical shape, a microporous surface and an average diameter of 66 ± 17µm (under dry conditions) and 123 ± 24 µm (under wet conditions). Chemical Imaging analysis pointed out a homogeneous distribution of gellan, gelatin and Insulin-like growth factor-1 within the microsphere matrix. In vitro cell culture tests showed that the microspheres promoted rat cardiac progenitor cells adhesion, and cluster formation. After dynamic suspension culture within an impeller-free bioreactor, cells still adhered to microspheres, spreading their cytoplasm over microsphere surface. Intramyocardial administration of microspheres in a cryoinjury rat model attenuated chamber dilatation, myocardial damage and fibrosis and improved cell homing.Overall, the findings of this study confirm that the produced microspheres display morphological, physicochemical, functional and biological properties potentially adequate for future applications as injectable scaffold for cardiac tissue engineering.
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Affiliation(s)
| | - Niccoletta Barbani
- Department of Civil and Industrial Engineering, University of Pisa, Pisa, Italy
| | - Caterina Frati
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Denise Madeddu
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Diana Massai
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Torino, Italy
| | - Umberto Morbiducci
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Torino, Italy
| | - Luigi Lazzeri
- Department of Civil and Industrial Engineering, University of Pisa, Pisa, Italy
| | - Angela Falco
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Gallia Graiani
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Costanza Lagrasta
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Alberto Audenino
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Torino, Italy
| | | | - Federico Quaini
- Department of Medicine and Surgery, University of Parma, Parma, Italy
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11
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Esteban-Pérez S, Andrés-Guerrero V, López-Cano JJ, Molina-Martínez I, Herrero-Vanrell R, Bravo-Osuna I. Gelatin Nanoparticles-HPMC Hybrid System for Effective Ocular Topical Administration of Antihypertensive Agents. Pharmaceutics 2020; 12:E306. [PMID: 32231033 PMCID: PMC7238113 DOI: 10.3390/pharmaceutics12040306] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/22/2020] [Accepted: 03/24/2020] [Indexed: 02/06/2023] Open
Abstract
The increment in ocular drug bioavailability after topical administration is one of the main challenges in pharmaceutical technology. For several years, different strategies based on nanotechnology, hydrogels or implants have been evaluated. Nowadays, the tolerance of ophthalmic preparations has become a critical issue and it is essential to the use of well tolerated excipients. In the present work, we have explored the potential of gelatin nanoparticles (GNPs) loaded with timolol maleate (TM), a beta-adrenergic blocker widely used in the clinic for glaucoma treatment and a hybrid system of TM-GNPs included in a hydroxypropyl methylcellulose (HPMC) viscous solution. The TM- loaded nanoparticles (mean particle size of 193 ± 20 nm and drug loading of 0.291 ± 0.019 mg TM/mg GNPs) were well tolerated both in vitro (human corneal cells) and in vivo. The in vivo efficacy studies performed in normotensive rabbits demonstrated that these gelatin nanoparticles were able to achieve the same hypotensive effect as a marketed formulation (0.5% TM) containing a 5-fold lower concentration of the drug. When comparing commercial and TM-GNPs formulations with the same TM dose, nanoparticles generated an increased efficacy with a significant (p < 0.05) reduction of intraocular pressure (IOP) (from 21% to 30%) and an augmentation of 1.7-fold in the area under the curve (AUC)(0-12h). On the other hand, the combination of timolol-loaded nanoparticles (TM 0.1%) and the viscous polymer HPMC 0.3%, statistically improved the IOP reduction up to 30% (4.65 mmHg) accompanied by a faster time of maximum effect (tmax = 1 h). Furthermore, the hypotensive effect was extended for four additional hours, reaching a pharmacological activity that lasted 12 h after a single instillation of this combination, and leading to an AUC(0-12h) 2.5-fold higher than the one observed for the marketed formulation. According to the data presented in this work, the use of hybrid systems that combine well tolerated gelatin nanoparticles and a viscous agent could be a promising alternative in the management of high intraocular pressure in glaucoma.
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Affiliation(s)
- Sergio Esteban-Pérez
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; (S.E.-P.); (V.A.-G.); (J.J.L.-C.); (I.M.-M.); (R.H.-V.)
- Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC) San Carlos Clinical Hospital, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
- Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
| | - Vanessa Andrés-Guerrero
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; (S.E.-P.); (V.A.-G.); (J.J.L.-C.); (I.M.-M.); (R.H.-V.)
- Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC) San Carlos Clinical Hospital, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
- Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
| | - José Javier López-Cano
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; (S.E.-P.); (V.A.-G.); (J.J.L.-C.); (I.M.-M.); (R.H.-V.)
- Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC) San Carlos Clinical Hospital, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
- Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
| | - Irene Molina-Martínez
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; (S.E.-P.); (V.A.-G.); (J.J.L.-C.); (I.M.-M.); (R.H.-V.)
- Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC) San Carlos Clinical Hospital, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
- Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
| | - Rocio Herrero-Vanrell
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; (S.E.-P.); (V.A.-G.); (J.J.L.-C.); (I.M.-M.); (R.H.-V.)
- Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC) San Carlos Clinical Hospital, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
- Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
| | - Irene Bravo-Osuna
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; (S.E.-P.); (V.A.-G.); (J.J.L.-C.); (I.M.-M.); (R.H.-V.)
- Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC) San Carlos Clinical Hospital, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
- Ocular Pathology National Net (OFTARED) of the Institute of Health Carlos III, Calle Profesor Martín Lagos, s/n, 28040 Madrid, Spain
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12
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Green and Facile Synthesis of Dendritic and Branched Gold Nanoparticles by Gelatin and Investigation of Their Biocompatibility on Fibroblast Cells. Processes (Basel) 2019. [DOI: 10.3390/pr7090631] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
In this work, gold nanostar (AuNPs) and gold nanodendrites were synthesized by one-pot and environmentally friendly approach in the presence of gelatin. Influence of gelatin concentrations and reaction conditions on the growth of branched (AuNPs) were investigated further. Interestingly, the conversion of morphology between dendritic and branched nanostructure can be attained by changing the pH value of gelatin solution. The role of gelatin as a protecting agent through the electrostatic and steric interaction was also revealed. Branched nanoparticles were characterized by surface plasmon resonance spectroscopy (SPR), transmission electron microscopy (TEM), XRD, dynamic light scattering (DLS) and zeta-potential. The chemical interaction of gelatin with branched gold nanoparticles was analyzed by Fourier transform infrared spectroscopy (FT-IT) technique. Ultraviolet visible spectroscopy results indicated the formation of branched gold nanoparticles with the maximum surface plasmon resonance peak at 575–702 nm. The structure of both nanodendrites and nanostars were determined by TEM. The crystal sizes of nano-star ranged from 42 to 55 nm and the nanodendrites sizes were about 75–112 nm. Based on the characterizations, a growth mechanism could be proposed to explain morphology evolutions of branched AuNPs. Moreover, the branched AuNPs is high viability at 100 μg/mL concentration when performed by the SRB assay with human foreskin fibroblast cells.
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13
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Rosellini E, Zhang YS, Migliori B, Barbani N, Lazzeri L, Shin SR, Dokmeci MR, Cascone MG. Protein/polysaccharide-based scaffolds mimicking native extracellular matrix for cardiac tissue engineering applications. J Biomed Mater Res A 2018; 106:769-781. [PMID: 29052369 PMCID: PMC5845858 DOI: 10.1002/jbm.a.36272] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/22/2017] [Accepted: 10/12/2017] [Indexed: 11/07/2022]
Abstract
Tissue engineering has emerged as a viable approach to treat disease or repair damage in tissues and organs. One of the key elements for the success of tissue engineering is the use of a scaffold serving as artificial extracellular matrix (ECM). The ECM hosts the cells and improves their survival, proliferation, and differentiation, enabling the formation of new tissue. Here, we propose the development of a class of protein/polysaccharide-based porous scaffolds for use as ECM substitutes in cardiac tissue engineering. Scaffolds based on blends of a protein component, collagen or gelatin, with a polysaccharide component, alginate, were produced by freeze-drying and subsequent ionic and chemical crosslinking. Their morphological, physicochemical, and mechanical properties were determined and compared with those of natural porcine myocardium. We demonstrated that our scaffolds possessed highly porous and interconnected structures, and the chemical homogeneity of the natural ECM was well reproduced in both types of scaffolds. Furthermore, the alginate/gelatin (AG) scaffolds better mimicked the native tissue in terms of interactions between components and protein secondary structure, and in terms of swelling behavior. The AG scaffolds also showed superior mechanical properties for the desired application and supported better adhesion, growth, and differentiation of myoblasts under static conditions. The AG scaffolds were subsequently used for culturing neonatal rat cardiomyocytes, where high viability of the resulting cardiac constructs was observed under dynamic flow culture in a microfluidic bioreactor. We therefore propose our protein/polysaccharide scaffolds as a viable ECM substitute for applications in cardiac tissue engineering. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 769-781, 2018.
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Affiliation(s)
- Elisabetta Rosellini
- Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino, Pisa, 56126, Italy
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, 02139
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts, 02139
| | - Bianca Migliori
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, 02139
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts, 02139
| | - Niccoletta Barbani
- Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino, Pisa, 56126, Italy
| | - Luigi Lazzeri
- Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino, Pisa, 56126, Italy
| | - Su Ryon Shin
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, 02139
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts, 02139
| | - Mehmet Remzi Dokmeci
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, 02139
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts, 02139
| | - Maria Grazia Cascone
- Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino, Pisa, 56126, Italy
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14
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Maity J, Ray SK. Removal of Cu (II) ion from water using sugar cane bagasse cellulose and gelatin based composite hydrogels. Int J Biol Macromol 2017; 97:238-248. [DOI: 10.1016/j.ijbiomac.2017.01.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 12/10/2016] [Accepted: 01/01/2017] [Indexed: 11/15/2022]
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15
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Duconseille A, Andueza D, Picard F, Santé-Lhoutellier V, Astruc T. Variability in pig skin gelatin properties related to production site: A near infrared and fluorescence spectroscopy study. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2016.08.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Niehues E, Quadri MGN. SPINNABILITY, MORPHOLOGY AND MECHANICAL PROPERTIES OF GELATINS WITH DIFFERENT BLOOM INDEX. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2017. [DOI: 10.1590/0104-6632.20170341s20150418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- E. Niehues
- Federal University of Santa Catarina, Brazil
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17
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Duconseille A, Andueza D, Picard F, Santé-Lhoutellier V, Astruc T. Molecular changes in gelatin aging observed by NIR and fluorescence spectroscopy. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.06.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Cristallini C, Cibrario Rocchietti E, Gagliardi M, Mortati L, Saviozzi S, Bellotti E, Turinetto V, Sassi MP, Barbani N, Giachino C. Micro- and Macrostructured PLGA/Gelatin Scaffolds Promote Early Cardiogenic Commitment of Human Mesenchymal Stem Cells In Vitro. Stem Cells Int 2016; 2016:7176154. [PMID: 27822229 PMCID: PMC5086396 DOI: 10.1155/2016/7176154] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 06/30/2016] [Accepted: 08/02/2016] [Indexed: 01/04/2023] Open
Abstract
The biomaterial scaffold plays a key role in most tissue engineering strategies. Its surface properties, micropatterning, degradation, and mechanical features affect not only the generation of the tissue construct in vitro, but also its in vivo functionality. The area of myocardial tissue engineering still faces significant difficulties and challenges in the design of bioactive scaffolds, which allow composition variation to accommodate divergence in the evolving myocardial structure. Here we aimed at verifying if a microstructured bioartificial scaffold alone can provoke an effect on stem cell behavior. To this purpose, we fabricated microstructured bioartificial polymeric constructs made of PLGA/gelatin mimicking anisotropic structure and mechanical properties of the myocardium. We found that PLGA/gelatin scaffolds promoted adhesion, elongation, ordered disposition, and early myocardial commitment of human mesenchymal stem cells suggesting that these constructs are able to crosstalk with stem cells in a precise and controlled manner. At the same time, the biomaterial degradation kinetics renders the PLGA/gelatin constructs very attractive for myocardial regeneration approaches.
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Affiliation(s)
- Caterina Cristallini
- Institute for Chemical-Physical Processes, IPCF C.N.R., UOS Pisa, 56122 Pisa, Italy
| | | | - Mariacristina Gagliardi
- Center for Micro-BioRobotics @SSSA, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy
| | - Leonardo Mortati
- National Institute of Research in Metrology, INRIM, 10135 Turin, Italy
| | - Silvia Saviozzi
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy
| | - Elena Bellotti
- Department of Civil and Industrial Engineering, University of Pisa, 56122 Pisa, Italy
| | - Valentina Turinetto
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy
| | - Maria Paola Sassi
- National Institute of Research in Metrology, INRIM, 10135 Turin, Italy
| | - Niccoletta Barbani
- Department of Civil and Industrial Engineering, University of Pisa, 56122 Pisa, Italy
| | - Claudia Giachino
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy
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19
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Near-infrared chemical imaging and its correlation with the mechanical properties of chitosan–gelatin edible films. Carbohydr Polym 2016; 136:409-17. [DOI: 10.1016/j.carbpol.2015.09.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/14/2015] [Accepted: 09/15/2015] [Indexed: 11/20/2022]
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20
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Derkach SR, Ilyin SO, Maklakova AA, Kulichikhin VG, Malkin AY. The rheology of gelatin hydrogels modified by κ-carrageenan. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.03.024] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Suarasan S, Focsan M, Soritau O, Maniu D, Astilean S. One-pot, green synthesis of gold nanoparticles by gelatin and investigation of their biological effects on Osteoblast cells. Colloids Surf B Biointerfaces 2015; 132:122-31. [DOI: 10.1016/j.colsurfb.2015.05.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 03/09/2015] [Accepted: 05/07/2015] [Indexed: 01/03/2023]
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22
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Monitoring of Water Spectral Pattern Reveals Differences in Probiotics Growth When Used for Rapid Bacteria Selection. PLoS One 2015; 10:e0130698. [PMID: 26133176 PMCID: PMC4489812 DOI: 10.1371/journal.pone.0130698] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 05/23/2015] [Indexed: 12/26/2022] Open
Abstract
Development of efficient screening method coupled with cell functionality evaluation is highly needed in contemporary microbiology. The presented novel concept and fast non-destructive method brings in to play the water spectral pattern of the solution as a molecular fingerprint of the cell culture system. To elucidate the concept, NIR spectroscopy with Aquaphotomics were applied to monitor the growth of sixteen Lactobacillus bulgaricus one Lactobacillus pentosus and one Lactobacillus gasseri bacteria strains. Their growth rate, maximal optical density, low pH and bile tolerances were measured and further used as a reference data for analysis of the simultaneously acquired spectral data. The acquired spectral data in the region of 1100-1850nm was subjected to various multivariate data analyses - PCA, OPLS-DA, PLSR. The results showed high accuracy of bacteria strains classification according to their probiotic strength. Most informative spectral fingerprints covered the first overtone of water, emphasizing the relation of water molecular system to cell functionality.
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23
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Bellini F, Alberini I, Ferreyra MG, Rintoul I. Absolute determination of the gelling point of gelatin under quasi-thermodynamic equilibrium. J Food Sci 2015; 80:C935-41. [PMID: 25832543 DOI: 10.1111/1750-3841.12822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 01/17/2015] [Indexed: 11/29/2022]
Abstract
Thermodynamic studies on phase transformation of biopolymers in solution are useful to understand their nature and to evaluate their technological potentials. Thermodynamic studies should be conducted avoiding time-related phenomena. This condition is not easily achieved in hydrophilic biopolymers. In this contribution, the simultaneous effects of pH, salt concentration, and cooling rate (Cr) on the folding from random coil to triple helical collagen-like structures of gelatin were systematically studied. The phase transformation temperature at the absolute invariant condition of Cr = 0 °C/min (T(T)Cr=0) ) is introduced as a conceptual parameter to study phase transformations in biopolymers under quasi-thermodynamic equilibrium and avoiding interferences coming from time-related phenomena. Experimental phase diagrams obtained at different Cr are presented. The T(T)(Cr=0) compared with pH and TT(Cr=0) compared with [NaCl] diagram allowed to explore the transformation process at Cr = 0 °C/min. The results were explained by electrostatic interactions between the biopolymers and its solvation milieu.
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Affiliation(s)
- Franco Bellini
- Inst. de Desarrollo Tecnológico para la Industria Química, Univ. Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, CP-3000, Santa Fe, Argentina
| | - Ivana Alberini
- Inst. de Desarrollo Tecnológico para la Industria Química, Univ. Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, CP-3000, Santa Fe, Argentina
| | - María G Ferreyra
- Inst. de Desarrollo Tecnológico para la Industria Química, Univ. Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, CP-3000, Santa Fe, Argentina
| | - Ignacio Rintoul
- Inst. de Desarrollo Tecnológico para la Industria Química, Univ. Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, CP-3000, Santa Fe, Argentina
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24
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Kempka AP, Souza SMAGUD, Ulson de Souza AA, Prestes RC, Ogliari D. Influence of bloom number and plastifiers on gelatin matrices produced for enzyme immobilization. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2014. [DOI: 10.1590/s0104-66322014000100010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | | | | | - D. Ogliari
- State University of Santa Catarina, Brazil
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25
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Kempka AP, de Arruda Guelli Ulson de Souza SM, de Souza AAU. Lipase immobilisation in matrix comprised of gelatin of different bloom numbers with the addition of hydrophilic plasticisers. CAN J CHEM ENG 2014. [DOI: 10.1002/cjce.21956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Aniela Pinto Kempka
- Food Engineering Department; State University of Santa Catarina; BR 282 Pinhalzinho 89.870-000 SC Brazil
| | | | - Antônio Augusto Ulson de Souza
- Chemical Engineering Department; Federal University of Santa Catarina; Campus Universitário Florianópolis 88.040-900 SC Brazil
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26
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Facile fabrication of organic–inorganic composite beads by gelatin induced biomimetic mineralization for yeast alcohol dehydrogenase encapsulation. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.11.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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The effect of bioartificial constructs that mimic myocardial structure and biomechanical properties on stem cell commitment towards cardiac lineage. Biomaterials 2013; 35:92-104. [PMID: 24099712 DOI: 10.1016/j.biomaterials.2013.09.058] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Accepted: 09/17/2013] [Indexed: 01/10/2023]
Abstract
Despite the enormous progress in the treatment of coronary artery diseases, they remain the most common cause of heart failure in the Western countries. New translational therapeutic approaches explore cardiomyogenic differentiation of various types of stem cells in combination with tissue-engineered scaffolds. In this study we fabricated PHBHV/gelatin constructs mimicking myocardial structural properties. Chemical structure and molecular interaction between material components induced specific properties to the substrate in terms of hydrophilicity degree, porosity and mechanical characteristics. Viability and proliferation assays demonstrated that these constructs allow adhesion and growth of mesenchymal stem cells (MSCs) and cardiac resident non myocytic cells (NMCs). Immunofluorescence analysis demonstrated that stem cells cultured on these constructs adopt a distribution mimicking the three-dimensional cell alignment of myocardium. qPCR and immunofluorescence analyses showed the ability of this construct to direct initial MSC and NMC lineage specification towards cardiomyogenesis: both MSCs and NMCs showed the expression of the cardiac transcription factor GATA-4, fundamental for early cardiac commitment. Moreover NMCs also acquired the expression of the cardiac transcription factors Nkx2.5 and TBX5 and produced sarcomeric proteins. This work may represent a new approach to induce both resident and non-resident stem cells to cardiac commitment in a 3-D structure, without using additional stimuli.
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28
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Tekle S, Bjørnstad Å, Skinnes H, Dong Y, Segtnan VH. Estimating Deoxynivalenol Content of Ground Oats Using VIS-NIR Spectroscopy. Cereal Chem 2013. [DOI: 10.1094/cchem-07-12-0084-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Selamawit Tekle
- Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, Ås, Norway
- Corresponding author. Phone: +47 45521244. Fax: +47 64965001. E-mail:
| | - Åsmund Bjørnstad
- Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, Ås, Norway
| | - Helge Skinnes
- Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, Ås, Norway
| | - Yanhong Dong
- Department of Plant Pathology, University of Minnesota, Saint Paul, MN, U.S.A
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29
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Suarasan S, Focsan M, Maniu D, Astilean S. Gelatin-nanogold bioconjugates as effective plasmonic platforms for SERS detection and tagging. Colloids Surf B Biointerfaces 2012; 103:475-81. [PMID: 23261569 DOI: 10.1016/j.colsurfb.2012.10.046] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 10/25/2012] [Accepted: 10/27/2012] [Indexed: 10/27/2022]
Abstract
It is well known that standard citrate-reduced gold nanoparticles (AuNPs) are unstable at high ionic strength solution, which limits their applications in the biomedical field. In this work we present an environmentally friendly approach for the stabilization of citrate-reduced AuNPs in aqueous solution. Specifically, the stability of the AuNPs against salt-induced aggregation was greatly improved in the presence of gelatin biopolymer and stabilization of individual or small assemblies of nanoparticles can be controlled by the amount of gelatin. Furthermore, the gelatin-nanogold bioconjugates were demonstrated to be operational as highly sensitive surface-enhanced Raman scattering (SERS) active substrate for the detection of Rose Bengal fluorophore in solution at very low concentration. The results suggest that such bioconjugates can be successfully employed not only for detection of analytes, but more interestingly for building SERS-active tags in view of imaging purpose. The stabilization of bioconjugates was analyzed by localized surface plasmon resonance spectroscopy (LSPR), transmission electron microscopy (TEM), dynamic light scattering (DLS) and zeta-potential, and the chemical interaction of gelatin with AuNPs was inferred from Fourier transform infrared spectroscopy (FT-IR).
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Affiliation(s)
- Sorina Suarasan
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences and Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
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30
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Chiu CK, Ferreira J, Luo TJM, Geng H, Lin FC, Ko CC. Direct scaffolding of biomimetic hydroxyapatite-gelatin nanocomposites using aminosilane cross-linker for bone regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:2115-2126. [PMID: 22669282 PMCID: PMC3509178 DOI: 10.1007/s10856-012-4691-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Accepted: 05/21/2012] [Indexed: 06/01/2023]
Abstract
Hydroxyapatite-gelatin modified siloxane (GEMOSIL) nanocomposite was developed by coating, kneading and hardening processes to provide formable scaffolding for alloplastic graft applications. The present study aims to characterize scaffolding formability and mechanical properties of GEMOSIL, and to test the in vitro and in vivo biocompatibility of GEMOSIL. Buffer Solution initiated formable paste followed by the sol-gel reaction led to a final hardened composite. Results showed the adequate coating of aminosilane, 11-19 wt%, affected the cohesiveness of the powders and the final compressive strength (69 MPa) of the composite. TGA and TEM results showed the effective aminosilane coating that preserves hydroxyapatite-gelatin nanocrystals from damage. Both GEMOSIL with and without titania increased the mineralization of preosteoblasts in vitro. Only did titania additives revealed good in vivo bone formation in rat calvarium defects. The scaffolding formability, due to cohesive bonding among GEMOSIL particles, could be further refined to fulfill the complicated scaffold processes.
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Affiliation(s)
- Chi-Kai Chiu
- Department of Materials Science and Engineering, EBI 3002, North Carolina State University, Raleigh, NC 27606, US
| | - Joao Ferreira
- Oral Biology Program, School of Dentistry, University of North Carolina, CB #7454, Chapel Hill, NC 27599, US
| | - Tzy-Jiun M. Luo
- Department of Materials Science and Engineering, EBI 3002, North Carolina State University, Raleigh, NC 27606, US
| | - Haixia Geng
- Oral Biology Program, School of Dentistry, University of North Carolina, CB #7454, Chapel Hill, NC 27599, US
- Dental School of Jining Medical College, Jining, China
| | - Feng-Chang Lin
- Department of Biostatistics, University of North Carolina, Chapel Hill, US
| | - Ching-Chang Ko
- Oral Biology Program, School of Dentistry, University of North Carolina, CB #7454, Chapel Hill, NC 27599, US
- Department of Orthodontics, School of Dentistry, University of North Carolina, CB #7454, Chapel Hill, NC 27599, US
- Applied and Materials Science Program, University of North Carolina, Chapel Hill, NC 27599, US
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Silver nanoparticle (AgNPs) doped gum acacia-gelatin-silica nanohybrid: an effective support for diastase immobilization. Int J Biol Macromol 2011; 50:353-61. [PMID: 22210525 DOI: 10.1016/j.ijbiomac.2011.12.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 12/03/2011] [Accepted: 12/15/2011] [Indexed: 11/24/2022]
Abstract
An effective carrier matrix for diastase alpha amylase immobilization has been fabricated by gum acacia-gelatin dual templated polymerization of tetramethoxysilane. Silver nanoparticle (AgNp) doping to this hybrid could significantly enhance the shelf life of the impregnated enzyme while retaining its full bio-catalytic activity. The doped nanohybrid has been characterized as a thermally stable porous material which also showed multipeak photoluminescence under UV excitation. The immobilized diastase alpha amylase has been used to optimize the conditions for soluble starch hydrolysis in comparison to the free enzyme. The optimum pH for both immobilized and free enzyme hydrolysis was found to be same (pH=5), indicating that the immobilization made no major change in enzyme conformation. The immobilized enzyme showed good performance in wide temperature range (from 303 to 323 K), 323 K being the optimum value. The kinetic parameters for the immobilized, (K(m)=10.30 mg/mL, V(max)=4.36 μmol mL(-1)min(-1)) and free enzyme (K(m)=8.85 mg/mL, V(max)=2.81 μmol mL(-1)min(-1)) indicated that the immobilization improved the overall stability and catalytic property of the enzyme. The immobilized enzyme remained usable for repeated cycles and did not lose its activity even after 30 days storage at 40°C, while identically synthesized and stored silver undoped hybrid lost its ~31% activity in 48 h. Present study revealed the hybrids to be potentially useful for biomedical and optical applications.
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32
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Non-destructive dating of fiber-based gelatin silver prints using near-infrared spectroscopy and multivariate analysis. Anal Bioanal Chem 2011; 402:1459-69. [DOI: 10.1007/s00216-011-5566-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2011] [Revised: 10/14/2011] [Accepted: 11/09/2011] [Indexed: 10/14/2022]
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33
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Zhang L, Qiao C, Ding Y, Cheng J, Li T. Rheological Behavior of Gelatin/1-Allyl-3-Methylimidazolium Chloride Solutions. J MACROMOL SCI B 2011. [DOI: 10.1080/00222348.2011.609796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ling Zhang
- a Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Polytechnic University , Jinan , P. R. China
- b School of Material Science and Engineering, Shandong Polytechnic University , Jinan , P. R. China
| | - Congde Qiao
- a Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Polytechnic University , Jinan , P. R. China
- b School of Material Science and Engineering, Shandong Polytechnic University , Jinan , P. R. China
| | - Yunqiao Ding
- a Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Polytechnic University , Jinan , P. R. China
| | - Jinyong Cheng
- a Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Polytechnic University , Jinan , P. R. China
| | - Tianduo Li
- a Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Polytechnic University , Jinan , P. R. China
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Effect of microwave heating on the near infrared spectra and on the prediction accuracy of chemical parameters in red grape homogenates. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s11694-011-9116-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Guerrero P, Stefani P, Ruseckaite R, de la Caba K. Functional properties of films based on soy protein isolate and gelatin processed by compression molding. J FOOD ENG 2011. [DOI: 10.1016/j.jfoodeng.2011.02.003] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lai JY. The role of bloom index of gelatin on the interaction with retinal pigment epithelial cells. Int J Mol Sci 2009; 10:3442-3456. [PMID: 20111679 PMCID: PMC2812822 DOI: 10.3390/ijms10083442] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Revised: 07/29/2009] [Accepted: 07/31/2009] [Indexed: 12/28/2022] Open
Abstract
Biocompatible materials are of considerable interest in the development of cell/drug delivery carriers for therapeutic applications. This paper investigates the effects of the Bloom index of gelatin on its interaction with retinal pigment epithelial (RPE) cells. Following two days of culture of ARPE-19 cells with gelatin samples G75-100, G175, and G300, the in vitro biocompatibility was determined by cell proliferation and viability assays, and glutamate uptake measurements, as well as cytokine expression analyses. The mitochondrial dehydrogenase activity in the G300 groups was significantly lower than that of G75-100 and G175 groups. The Live/Dead assays also showed that the gelatin samples G300 induced mild cytotoxicity. In comparison with the treatment of gelatins with low Bloom index, the exposure to high Bloom strength gelatins markedly reduced the glutamate uptake capacity of ARPE-19 cells. One possible explanation for these observations is that the presence of gelatin samples G300 with high viscosity in the medium may affect the nutrient availability to cultured cells. The analyses of pro-inflammatory cytokine IL-6 expression at both mRNA and protein levels showed that the gelatins with low Bloom index caused less cellular inflammatory reaction and had more acceptable biocompatibility than their high Bloom strength counterparts. These findings suggest that the Bloom index gives influence on cellular responses to gelatin materials.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
- Biomedical Engineering Research Center, Chang Gung University, Taoyuan 33302, Taiwan
- Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan
- Author to whom correspondence should be addressed; E-Mail:
(J.-Y.L.); Tel. +886-3-211-8800, ext. 3598; Fax: +886-3-211-8668
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Bruun SW, Søndergaard I, Jacobsen S. Analysis of protein structures and interactions in complex food by near-infrared spectroscopy. 1. Gluten powder. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:7234-43. [PMID: 17676753 DOI: 10.1021/jf063680j] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The potential of near-infrared (NIR) spectroscopy in detailed food analysis was tested in a model system consisting of gluten powder treated with moisture and heat. Second-derivative transformation and extended multiplicative signal correction were applied for improving the band resolution and removing physical and quantitative spectral variations. Subsequent chemometric analyses gave loading spectra, which were interpreted as spectral effects of altered protein structures, induced by the treatments. Moistening of the gluten powder resulted in shifts and intensity changes in the protein bands, which could be explained by a combination of minor secondary structure changes, water binding, and changed microenvironments of the amino acid side chains. Heat denaturation induced increases at 2209 nm and decreases at 2167-2182 nm, indicating an alpha-helix to beta-sheet transformation, in agreement with the expectations.
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Affiliation(s)
- Susanne Wrang Bruun
- Enzyme and Protein Chemistry, BioCentrum-DTU, Søltofts Plads, Building 224, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
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Decker M, Nielsen PV, Martens H. Near-infrared spectra of Penicillium camemberti strains separated by extended multiplicative signal correction improved prediction of physical and chemical variations. APPLIED SPECTROSCOPY 2005; 59:56-68. [PMID: 15720739 DOI: 10.1366/0003702052940486] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Different methods for spectral preprocessing were compared in relation to the ability to distinguish between fungal isolates and growth stages for Penicillium camemberti grown on cheese substrate. The best classification results were obtained by temperatureand wavelength-extended multivariate signal correction (TWEMSC) preprocessing, whereby three patterns of variation in nearinfrared (NIR) log(1/R) spectra of fungal colonies could be separated mathematically: (1) physical light scattering and its wavelength dependency, (2) differences in light absorption of water due to varying sample temperature, etc., and (3) differences in light absorption between different fungal isolates. With this preprocessing, discriminant partial least squares (PLS) regression yielded 100% correct classification of three isolates, both within the cross-validated calibration set and in two independent test sets of samples.
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Affiliation(s)
- Marianne Decker
- Centre for Microbial Biotechnology, BioCentrum-DTU, Technical University of Denmark, Building 221, DK-2800 Kgs. Lyngby, Denmark.
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