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Rossi A, Pescara T, Gambelli AM, Gaggia F, Asthana A, Perrier Q, Basta G, Moretti M, Senin N, Rossi F, Orlando G, Calafiore R. Biomaterials for extrusion-based bioprinting and biomedical applications. Front Bioeng Biotechnol 2024; 12:1393641. [PMID: 38974655 PMCID: PMC11225062 DOI: 10.3389/fbioe.2024.1393641] [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: 02/29/2024] [Accepted: 05/31/2024] [Indexed: 07/09/2024] Open
Abstract
Amongst the range of bioprinting technologies currently available, bioprinting by material extrusion is gaining increasing popularity due to accessibility, low cost, and the absence of energy sources, such as lasers, which may significantly damage the cells. New applications of extrusion-based bioprinting are systematically emerging in the biomedical field in relation to tissue and organ fabrication. Extrusion-based bioprinting presents a series of specific challenges in relation to achievable resolutions, accuracy and speed. Resolution and accuracy in particular are of paramount importance for the realization of microstructures (for example, vascularization) within tissues and organs. Another major theme of research is cell survival and functional preservation, as extruded bioinks have cells subjected to considerable shear stresses as they travel through the extrusion apparatus. Here, an overview of the main available extrusion-based printing technologies and related families of bioprinting materials (bioinks) is provided. The main challenges related to achieving resolution and accuracy whilst assuring cell viability and function are discussed in relation to specific application contexts in the field of tissue and organ fabrication.
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Affiliation(s)
- Arianna Rossi
- Smart Manufacturing Laboratory, Engineering Department, University of Perugia, Perugia, Italy
| | - Teresa Pescara
- Laboratory for Endocrine Cell Transplant and Biohybrid Organs, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Alberto Maria Gambelli
- Department of Civil and Environmental Engineering, University of Perugia, Perugia, Italy
| | - Francesco Gaggia
- Laboratory for Endocrine Cell Transplant and Biohybrid Organs, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Amish Asthana
- Wake Forest School of Medicine, Winston Salem, NC, United States
| | - Quentin Perrier
- Wake Forest School of Medicine, Winston Salem, NC, United States
| | - Giuseppe Basta
- Laboratory for Endocrine Cell Transplant and Biohybrid Organs, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Michele Moretti
- Smart Manufacturing Laboratory, Engineering Department, University of Perugia, Perugia, Italy
| | - Nicola Senin
- Smart Manufacturing Laboratory, Engineering Department, University of Perugia, Perugia, Italy
| | - Federico Rossi
- Engineering Department, University of Perugia, Perugia, Italy
| | - Giuseppe Orlando
- Wake Forest School of Medicine, Winston Salem, NC, United States
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Choudhary A, Bains A, Sridhar K, Dhull SB, Goksen G, Sharma M, Chawla P. Recent advances in modifications of exudate gums: Functional properties and applications. Int J Biol Macromol 2024; 271:132688. [PMID: 38806080 DOI: 10.1016/j.ijbiomac.2024.132688] [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: 04/04/2024] [Revised: 05/15/2024] [Accepted: 05/25/2024] [Indexed: 05/30/2024]
Abstract
Gums are high-molecular-weight compounds with hydrophobic or hydrophilic characteristics, which are mainly comprised of complex carbohydrates called polysaccharides, often associated with proteins and minerals. Various innovative modification techniques are utilized, including ultrasound-assisted and microwave-assisted techniques, enzymatic alterations, electrospinning, irradiation, and amalgamation process. These methods advance the process, reducing processing times and energy consumption while maintaining the quality of the modified gums. Enzymes like xanthan lyases, xanthanase, and cellulase can selectively modify exudate gums, altering their structure to enhance their properties. This precise enzymatic approach allows for the use of exudate gums for specific applications. Exudate gums have been employed in nanotechnology applications through techniques like electrospinning. This enables the production of nanoparticles and nanofibers with improved properties, making them suitable for the drug delivery system, tissue engineering, active and intelligient food packaging. The resulting modified exudate gums exhibit improved rheological, emulsifying, gelling, and other functional properties, which expand their potential applications. This paper discusses novel applications of these modified gums in the pharmaceutical, food, and industrial sectors. The ever-evolving field presents diverse opportunities for sustainable innovation across these sectors.
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Affiliation(s)
- Anchal Choudhary
- Department of Food Technology and Nutrition, Lovely Professional University, Phagwara, Punjab 144411, India
| | - Aarti Bains
- Department of Microbiology, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Kandi Sridhar
- Department of Food Technology, Karpagam Academy of Higher Education (Deemed to be University), Coimbatore 641021, India
| | - Sanju Bala Dhull
- Department of Food Science and Technology, Chaudhary Devi Lal University, Sirsa, Haryana 125055, India
| | - Gulden Goksen
- Department of Food Technology, Vocational School of Technical Sciences at Mersin Tarsus Organized Industrial Zone, Tarsus University, 33100 Mersin, Turkey.
| | - Minaxi Sharma
- Haute Ecole Provinciale de Hainaut-Condorcet, 7800 Ath, Belgium.
| | - Prince Chawla
- Department of Food Technology and Nutrition, Lovely Professional University, Phagwara, Punjab 144411, India.
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Martorana A, Lenzuni M, Contardi M, Palumbo FS, Cataldo S, Pettignano A, Catania V, Schillaci D, Summa M, Athanassiou A, Fiorica C, Bertorelli R, Pitarresi G. Schiff Base-Based Hydrogel Embedded with In Situ Generated Silver Nanoparticles Capped by a Hyaluronic Acid-Diethylenetriamine Derivative for Wound Healing Application. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38603548 DOI: 10.1021/acsami.4c00657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
In this study, hydrogels were produced using a Schiff base reaction between two hyaluronic acid derivatives: one containing aldehyde groups (HA-Ald) and the other holding a diethylenetriamine with terminal amino groups (HA-DETA). The DETA portion promotes the in situ growth, complexation, and stabilization of silver nanoparticles (AgNPs), eliminating the need for external reducing agents. The reaction between HA-DETA and HA-Ald leads to the formation of imine bonds, which results in dynamically pH-responsive cross-linking. While the DETA capping ability helped in embedding the AgNPs, the on/off pH environmental responsivity of the hydrogel allows for a controlled and on-demand release of the drug, mainly when bacterial infections cause pH variation of the wound bed. The injectable hydrogels resulted in being highly compatible in contact with blood red cells, fibroblasts, and keratinocytes and capable of having a proliferative effect on an in vitro wound scratch model. The pH-responsive hydrogels showed proper antibacterial activity againstPseudomonas aeruginosaandStaphylococcus aureus, common bacterial strains presented in wound infections. Finally, in vivo wound model studies demonstrated an overall speeding up in the wound healing rate and advanced wound conditions in the experimental group treated with the hydrogels compared to control samples.
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Affiliation(s)
- Annalisa Martorana
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Martina Lenzuni
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Marco Contardi
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Department of Earth and Environmental Sciences (DISAT), University of Milan-Bicocca, Piazza della Scienza, 20126 Milan, Italy
| | - Fabio S Palumbo
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Salvatore Cataldo
- Department of Physics and Chemistry - Emilio Segrè, University of Palermo, Viale delle scienze, Ed. 17, 90128 Palermo, Italy
| | - Alberto Pettignano
- Department of Physics and Chemistry - Emilio Segrè, University of Palermo, Viale delle scienze, Ed. 17, 90128 Palermo, Italy
| | - Valentina Catania
- Department of Earth and Marine Sciences (DiSTeM), University of Palermo, Viale delle Scienze Ed. 16, 90128 Palermo, Italy
| | - Domenico Schillaci
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Maria Summa
- Translational Pharmacology, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | | | - Calogero Fiorica
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Rosalia Bertorelli
- Translational Pharmacology, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Giovanna Pitarresi
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, 90123 Palermo, Italy
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Wu S, Xiao R, Wu Y, Xu L. Advances in tissue engineering of gellan gum-based hydrogels. Carbohydr Polym 2024; 324:121484. [PMID: 37985043 DOI: 10.1016/j.carbpol.2023.121484] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 10/09/2023] [Accepted: 10/09/2023] [Indexed: 11/22/2023]
Abstract
Gellan Gum (GG) is a large, naturally occurring, linear polysaccharide with a similar structure and biological properties to the extracellular matrix. It's appropriate as a matrix material for the development of different composite materials due to its biocompatibility, biodegradability, and injectability. Hydrogels made from GG have found various applications in the field of Tissue Engineering (TE) in recent years after being mixed with a variety of other organic and inorganic components. These composites are considered multifunctional developing biomaterials because of their impressive mechanical capabilities, biocompatibility, low cytotoxicity, etc. This review focuses on the emerging advances of GG-based hydrogels in TE, providing an overview of the applications of different types of GG-based composite materials in bone TE, cartilage TE, nervous TE, retina TE, and other fields. Moreover, the investigations of GG-based hydrogels as bioink components for 3D bioprinting in TE will be elucidated. This review offers general guidance for the development of biomaterials related to GG, as well as ideas for future clinical diagnosis and treatment.
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Affiliation(s)
- Shanyi Wu
- Hunan Key Laboratory of Oral Health Research, Hunan 3D Printing Engineering Research Center of Oral Care, Hunan Clinical Research Center of Oral Major Disease and Oral Health, Department of Operative Dentistry and Endodontics, Xiangya Stomatological Hospital, Central South University, Changsha, Hunan, China
| | - Rongjun Xiao
- Hunan Key Laboratory of Oral Health Research, Hunan 3D Printing Engineering Research Center of Oral Care, Hunan Clinical Research Center of Oral Major Disease and Oral Health, Department of Operative Dentistry and Endodontics, Xiangya Stomatological Hospital, Central South University, Changsha, Hunan, China
| | - Yong Wu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Key Laboratory of Kidney Disease and Blood Purification, Changsha, Hunan, China
| | - Laijun Xu
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou 510280, China.
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Cernencu AI, Ioniță M. The current state of the art in gellan-based printing inks in tissue engineering. Carbohydr Polym 2023; 309:120676. [PMID: 36906360 DOI: 10.1016/j.carbpol.2023.120676] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023]
Abstract
With the advancement of enhanced fabrication technologies, specifically 3D printing, it is now possible to build artificial tissue for personalized healing. However, inks developed from polymers often fail to meet expectations in terms of mechanical strength, scaffold integrity, and the stimulation of tissue formation. Developing new printable formulations as well as adapting existing printing methods is an essential aspect of contemporary biofabrication research. In order to push the boundaries of the printability window, various strategies have been developed employing gellan gum. This has resulted in major breakthroughs in the development of 3D hydrogels scaffolds that exhibit significant resemblance to genuine tissues and enables the fabrication of more complex systems. In light of the many uses of gellan gum, the purpose of this paper is to provide a synopsis of the printable ink designs drawing attention to the various compositions and fabrication approaches that may be used for tuning the properties of 3D printed hydrogels for tissue engineering applications. The purpose of this article is to outline the development of gellan-based 3D printing inks and to encourage research by highlighting the possible applications of gellan gum.
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Affiliation(s)
- Alexandra I Cernencu
- Advanced Polymer Materials Group, University Politehnica of Bucharest, SplaiulIndependenței, 313, 060042, Bucharest, Romania
| | - Mariana Ioniță
- Advanced Polymer Materials Group, University Politehnica of Bucharest, SplaiulIndependenței, 313, 060042, Bucharest, Romania; Faculty of Medical Engineering, University Politehnica of Bucharest, Bucharest 011061, Romania.
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Progress and opportunities in Gellan gum-based materials: A review of preparation, characterization and emerging applications. Carbohydr Polym 2023; 311:120782. [PMID: 37028862 DOI: 10.1016/j.carbpol.2023.120782] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023]
Abstract
Gellan gum, a microbial exopolysaccharide, is biodegradable and has potential to fill several key roles in many fields from food to pharmacy, biomedicine and tissue engineering. In order to improve the physicochemical and biological properties of gellan gum, some researchers take advantage of numerous hydroxyl groups and the free carboxyl present in each repeating unit. As a result, design and development of gellan-based materials have advanced significantly. The goal of this review is to provide a summary of the most recent, high-quality research trends that have used gellan gum as a polymeric component in the design of numerous cutting-edge materials with applications in various fields.
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D’Amora U, Ronca A, Scialla S, Soriente A, Manini P, Phua JW, Ottenheim C, Pezzella A, Calabrese G, Raucci MG, Ambrosio L. Bioactive Composite Methacrylated Gellan Gum for 3D-Printed Bone Tissue-Engineered Scaffolds. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:772. [PMID: 36839140 PMCID: PMC9963483 DOI: 10.3390/nano13040772] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Gellan gum (GG) was chemically modified with methacrylic moieties to produce a photocrosslinkable biomaterial ink, hereinafter called methacrylated GG (GGMA), with improved physico-chemical properties, mechanical behavior and stability under physiological conditions. Afterwards, GGMA was functionalized by incorporating two different bioactive compounds, a naturally derived eumelanin extracted from the black soldier fly (BSF-Eumel), or hydroxyapatite nanoparticles (HAp), synthesized by the sol-gel method. Different ink formulations based on GGMA (2 and 4% (w/v)), BSF-Eumel, at a selected concentration (0.3125 mg/mL), or HAp (10 and 30% wHAp/wGGMA) were developed and processed by three-dimensional (3D) printing. All the functionalized GGMA-based ink formulations allowed obtaining 3D-printed GGMA-based scaffolds with a well-organized structure. For both bioactive signals, the scaffolds with the highest GGMA concentration (4% (w/v)) and the highest percentage of infill (45%) showed the best performances in terms of morphological and mechanical properties. Indeed, these scaffolds showed a good structural integrity over 28 days. Given the presence of negatively charged groups along the eumelanin backbone, scaffolds consisting of GGMA/BSF-Eumel demonstrated a higher stability. From a mechanical point of view, GGMA/BSF-Eumel scaffolds exhibited values of storage modulus similar to those of GGMA ones, while the inclusion of HAp at 30% (wHAp/wGGMA) led to a storage modulus of 32.5 kPa, 3.5-fold greater than neat GGMA. In vitro studies proved the capability of the bioactivated 3D-printed scaffolds to support 7F2 osteoblast cell growth and differentiation. BSF-Eumel and HAp triggered a different time-dependent physiological response in the osteoblasts. Specifically, while the ink with BSF-Eumel acted as a stimulus towards cell proliferation, reaching the highest value at 14 days, a higher expression of alkaline phosphatase activity was detected for scaffolds consisting of GGMA and HAp. The overall findings demonstrated the possible use of these biomaterial inks for 3D-printed bone tissue-engineered scaffolds.
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Affiliation(s)
- Ugo D’Amora
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy
| | - Alfredo Ronca
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy
| | - Stefania Scialla
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy
| | - Alessandra Soriente
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy
| | - Paola Manini
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
- Bioelectronics Task Force, University of Naples Federico II, 80126 Naples, Italy
| | - Jun Wei Phua
- Insectta, 60 Jalan Penjara, Singapore 149375, Singapore
| | | | - Alessandro Pezzella
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy
- Bioelectronics Task Force, University of Naples Federico II, 80126 Naples, Italy
- Department of Physics “E. Pancini”, University of Naples Federico II, 80126 Naples, Italy
| | - Giovanna Calabrese
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy
| | - Maria Grazia Raucci
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy
- Bioelectronics Task Force, University of Naples Federico II, 80126 Naples, Italy
| | - Luigi Ambrosio
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy
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Correlating Rheological Properties of a Gellan Gum-Based Bioink: A Study of the Impact of Cell Density. Polymers (Basel) 2022; 14:polym14091844. [PMID: 35567015 PMCID: PMC9102283 DOI: 10.3390/polym14091844] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/17/2022] Open
Abstract
Here, for the production of a bioink-based gellan gum, an amino derivative of this polysaccharide was mixed with a mono-functionalized aldehyde polyethyleneglycol in order to improve viscoelastic macroscopic properties and the potential processability by means of bioprinting techniques as confirmed by the printing tests. The dynamic Schiff base linkage between amino and aldehyde groups temporally modulates the rheological properties and allows a reduction of the applied pressure during extrusion followed by the recovery of gellan gum strength. Rheological properties, often related to printing resolution, were extensively investigated confirming pseudoplastic behavior and thermotropic and ionotropic responses. The success of bioprinting is related to different parameters. Among them, cell density must be carefully selected, and in order to quantify their role on printability, murine preostoblastic cells (MC3T3-E1) and human colon tumor cells (HCT-116) were chosen as cell line models. Here, we investigated the effect of their density on the bioink’s rheological properties, showing a more significant difference between cell densities for MC3T3-E1 compared to HCT-116. The results suggest the necessity of not neglecting this aspect and carrying out preliminary studies to choose the best cell densities to have the maximum viability and consequently to set the printing parameters.
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Germain N, Dhayer M, Dekiouk S, Marchetti P. Current Advances in 3D Bioprinting for Cancer Modeling and Personalized Medicine. Int J Mol Sci 2022; 23:ijms23073432. [PMID: 35408789 PMCID: PMC8998835 DOI: 10.3390/ijms23073432] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/15/2022] [Accepted: 03/18/2022] [Indexed: 02/01/2023] Open
Abstract
Tumor cells evolve in a complex and heterogeneous environment composed of different cell types and an extracellular matrix. Current 2D culture methods are very limited in their ability to mimic the cancer cell environment. In recent years, various 3D models of cancer cells have been developed, notably in the form of spheroids/organoids, using scaffold or cancer-on-chip devices. However, these models have the disadvantage of not being able to precisely control the organization of multiple cell types in complex architecture and are sometimes not very reproducible in their production, and this is especially true for spheroids. Three-dimensional bioprinting can produce complex, multi-cellular, and reproducible constructs in which the matrix composition and rigidity can be adapted locally or globally to the tumor model studied. For these reasons, 3D bioprinting seems to be the technique of choice to mimic the tumor microenvironment in vivo as closely as possible. In this review, we discuss different 3D-bioprinting technologies, including bioinks and crosslinkers that can be used for in vitro cancer models and the techniques used to study cells grown in hydrogels; finally, we provide some applications of bioprinted cancer models.
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Affiliation(s)
- Nicolas Germain
- UMR 9020–UMR-S 1277–Canther–Cancer Heterogeneity, Plasticity and Resistance to Therapies, Institut de Recherche Contre le Cancer de Lille, University Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (M.D.); (S.D.)
- Banque de Tissus, Centre de Biologie-Pathologie, CHU Lille, F-59000 Lille, France
- Correspondence: (N.G.); (P.M.); Tel.: +33-3-20-16-92-20 (P.M.)
| | - Melanie Dhayer
- UMR 9020–UMR-S 1277–Canther–Cancer Heterogeneity, Plasticity and Resistance to Therapies, Institut de Recherche Contre le Cancer de Lille, University Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (M.D.); (S.D.)
| | - Salim Dekiouk
- UMR 9020–UMR-S 1277–Canther–Cancer Heterogeneity, Plasticity and Resistance to Therapies, Institut de Recherche Contre le Cancer de Lille, University Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (M.D.); (S.D.)
| | - Philippe Marchetti
- UMR 9020–UMR-S 1277–Canther–Cancer Heterogeneity, Plasticity and Resistance to Therapies, Institut de Recherche Contre le Cancer de Lille, University Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (M.D.); (S.D.)
- Banque de Tissus, Centre de Biologie-Pathologie, CHU Lille, F-59000 Lille, France
- Correspondence: (N.G.); (P.M.); Tel.: +33-3-20-16-92-20 (P.M.)
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Fiorica C, Biscari G, Palumbo FS, Pitarresi G, Martorana A, Giammona G. Physicochemical and Rheological Characterization of Different Low Molecular Weight Gellan Gum Products and Derived Ionotropic Crosslinked Hydrogels. Gels 2021; 7:62. [PMID: 34073308 PMCID: PMC8162344 DOI: 10.3390/gels7020062] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 12/14/2022] Open
Abstract
A series of four different low molecular weight gellan gum products was obtained by alkaline hydrolysis with the aim to investigate the impact of the molecular weight on the rheological properties of the polysaccharide aqueous dispersions and on the physicochemical characteristics of derived ionotropic crosslinked hydrogels. In particular, thermo-rheological analysis was conducted on aqueous dispersions to study the influence of molecular weight on the thermogelation properties typical of the native polysaccharide while strain sweep experiments were conducted to establish if aqueous dispersion shows a viscoelastic behavior. The effect of different Ca2+ on the rheological properties of hydrogels were studied. Furthermore, ionotropic crosslinked hydrogels were analyzed in terms of morphology on the dried state and swelling behavior, while their viscoelastic properties were studied by means of rheological analysis conducted in frequency sweep regime after different time points of incubation in phosphate buffer at pH 7.4. Release experiments conducted using fluorescein isothiocyanate labelled dextran as a model diffusion agent and was performed to investigate the possibility of using the low molecular weight GG-derived hydrogels as an active molecule-releasing device. Finally, the cytocompatibility of hydrolysis products was investigated, as well as the capacity of hydrogels to encapsulate viable MC3T3-E1 preosteoblastic cells.
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Affiliation(s)
- Calogero Fiorica
- Department of “Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche” (STEBICEF), University of Palermo, Via Archirafi, 32, 90123 Palermo, Italy; (G.B.); (F.S.P.); (G.P.); (A.M.); (G.G.)
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Mauro N, Utzeri MA, Drago SE, Buscarino G, Cavallaro G, Giammona G. Carbon Nanodots as Functional Excipient to Develop Highly Stable and Smart PLGA Nanoparticles Useful in Cancer Theranostics. Pharmaceutics 2020; 12:E1012. [PMID: 33113976 PMCID: PMC7690707 DOI: 10.3390/pharmaceutics12111012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/11/2020] [Accepted: 10/20/2020] [Indexed: 01/19/2023] Open
Abstract
Theranostic systems have attracted considerable attention for their multifunctional approach to cancer. Among these, carbon nanodots (CDs) emerged as luminescent nanomaterials due to their exceptional chemical properties, synthetic ease, biocompatibility, and for their photothermal and fluorescent properties useful in cancer photothermal therapy. However, premature renal excretion due to the small size of these particles limits their biomedical application. To overcome these limitations, here, hybrid poly(lactic-co-glycolic acid) (PLGA-CDs) nanoparticles with suitable size distribution and stability have been developed. CDs were decisive in the preparation of polymeric nanoparticles, not only conferring them photothermal and fluorescent properties, needed in theranostics, but also having a strategic role in the stabilization of the system in aqueous media. In fact, CDs provide stable PLGA-based nanoparticles in aqueous media and sufficient cryoprotection in combination with 1% PVP. While PLGA nanoparticles required at least 5% of sucrose. Comparing nanosystems with different CDs content, it is also evident how these positively impinge on the loading and release of the drug, favoring high drug loading (~4.5%) and a sustained drug release over 48 h. The therapeutic and imaging potentials were finally confirmed through in vitro studies on a breast cancer cell line (MDA-MB-231) using fluorescence imaging and the MTS cell viability assay.
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Affiliation(s)
- Nicolò Mauro
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, via Archirafi 32, 90123 Palermo, Italy; (M.A.U.); (S.E.D.); (G.B.); (G.C.); (G.G.)
- Fondazione Umberto Veronesi, Piazza Velasca 5, 20122 Milano, Italy
| | - Mara Andrea Utzeri
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, via Archirafi 32, 90123 Palermo, Italy; (M.A.U.); (S.E.D.); (G.B.); (G.C.); (G.G.)
| | - Salvatore Emanuele Drago
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, via Archirafi 32, 90123 Palermo, Italy; (M.A.U.); (S.E.D.); (G.B.); (G.C.); (G.G.)
| | - Gianpiero Buscarino
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, via Archirafi 32, 90123 Palermo, Italy; (M.A.U.); (S.E.D.); (G.B.); (G.C.); (G.G.)
- Department of Physics and Chemistry (DiFC), University of Palermo, via Archirafi 36, 90123 Palermo, Italy
| | - Gennara Cavallaro
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, via Archirafi 32, 90123 Palermo, Italy; (M.A.U.); (S.E.D.); (G.B.); (G.C.); (G.G.)
- Institute of Biophysics at Palermo, Italian National Research Council, Via Ugo La Malfa 153, 90146 Palermo, Italy
| | - Gaetano Giammona
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, via Archirafi 32, 90123 Palermo, Italy; (M.A.U.); (S.E.D.); (G.B.); (G.C.); (G.G.)
- Institute of Biophysics at Palermo, Italian National Research Council, Via Ugo La Malfa 153, 90146 Palermo, Italy
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