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Willems C, Qi F, Trutschel ML, Groth T. Functionalized Gelatin/Polysaccharide Hydrogels for Encapsulation of Hepatocytes. Gels 2024; 10:231. [PMID: 38667650 PMCID: PMC11048940 DOI: 10.3390/gels10040231] [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: 02/07/2024] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
Liver diseases represent a considerable burden to patients and healthcare systems. Hydrogels play an important role in the engineering of soft tissues and may be useful for embedding hepatocytes for different therapeutic interventions or the development of in vitro models to study the pathogenesis of liver diseases or testing of drugs. Here, we developed two types of hydrogels by crosslinking hydrazide-functionalized gelatin with either oxidized dialdehyde hyaluronan or alginate through the formation of hydrazone bonds. Gel formulations were studied through texture analysis and rheometry, showing mechanical properties comparable to those of liver tissue while also demonstrating long-term stability. The biocompatibility of hydrogels and their ability to host hepatocytes was studied in vitro in comparison to pure gelatin hydrogels crosslinked by transglutaminase using the hepatocellular line HepG2. It was found that HepG2 cells could be successfully embedded in the hydrogels, showing no signs of gel toxicity and proliferating in a 3D environment comparable to pure transglutaminase cross-linked gelatin hydrogels used as control. Altogether, hydrazide gelatin in combination with oxidized polysaccharides makes stable in situ gelling systems for the incorporation of hepatocytes, which may pave the way for use in liver tissue engineering and drug testing.
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Affiliation(s)
- Christian Willems
- Department of Biomedical Materials, Institute of Pharmacy, Martin-Luther University Halle-Wittenberg, 06120 Halle, Germany; (C.W.); (F.Q.)
| | - Fangdi Qi
- Department of Biomedical Materials, Institute of Pharmacy, Martin-Luther University Halle-Wittenberg, 06120 Halle, Germany; (C.W.); (F.Q.)
| | - Marie-Luise Trutschel
- Department of Pharmaceutical Technology, Institute of Pharmacy, Martin-Luther University Halle-Wittenberg, 06120 Halle, Germany
| | - Thomas Groth
- Department of Biomedical Materials, Institute of Pharmacy, Martin-Luther University Halle-Wittenberg, 06120 Halle, Germany; (C.W.); (F.Q.)
- Interdisciplinary Center of Materials Science, Martin-Luther University Halle-Wittenberg, 06120 Halle, Germany
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Migaou M, Macé S, Maalej H, Marchand L, Bonnetot S, Noël C, Sinquin C, Jérôme M, Zykwinska A, Colliec-Jouault S, Maaroufi RM, Delbarre-Ladrat C. Exploring the Exopolysaccharide Production Potential of Bacterial Strains Isolated from Tunisian Blue Crab Portunus segnis Microbiota. Molecules 2024; 29:774. [PMID: 38398526 PMCID: PMC10893132 DOI: 10.3390/molecules29040774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 02/25/2024] Open
Abstract
The blue crab (BC) Portunus segnis is considered an invasive species colonizing Tunisian coasts since 2014. This work aims to explore its associated bacteria potential to produce anionic exopolysaccharides (EPSs) in order to open up new ways of valorization. In this study, different BC samples were collected from the coastal area of Sfax, Tunisia. First, bacterial DNA was extracted from seven different fractions (flesh, gills, viscera, carapace scraping water, and three wastewaters from the production plant) and then sequenced using the metabarcoding approach targeting the V3-V4 region of the 16S rDNA to describe their microbiota composition. Metabarcoding data showed that the dominant bacterial genera were mainly Psychrobacter, Vagococcus, and Vibrio. In parallel, plate counting assays were performed on different culture media, and about 250 bacterial strains were isolated and identified by sequencing the 16S rDNA. EPS production by this new bacterial diversity was assessed to identify new compounds of biotechnological interest. The identification of the bacterial strains in the collection confirmed the dominance of Psychrobacter spp. strains. Among them, 43 were identified as EPS producers, as revealed by Stains-all dye in agarose gel electrophoresis. A Buttiauxella strain produced an EPS rich in both neutral sugars including rare sugars such as rhamnose and fucose and uronic acids. This original composition allows us to assume its potential for biotechnological applications and, more particularly, for developing innovative therapeutics. This study highlights bacterial strains associated with BC; they are a new untapped source for discovering innovative bioactive compounds for health and cosmetic applications, such as anionic EPS.
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Affiliation(s)
- Mariem Migaou
- Laboratory of Genetics, Biodiversity & Valorisation of Bioresources, Higher Institute of Biotechnology of Monastir, University of Monastir, Ave Tahar Haddad, BP74, Monastir 5000, Tunisia
- Ifremer, MASAE Microbiologie Aliment Santé Environnement, F-44000 Nantes, France
| | - Sabrina Macé
- Ifremer, MASAE Microbiologie Aliment Santé Environnement, F-44000 Nantes, France
| | - Hana Maalej
- Laboratory of Biodiversity and Valorization of Arid Areas Bioresources, Faculty of Sciences, University of Gabès, Erriadh, Zrig, Gabès 6072, Tunisia
| | - Laetitia Marchand
- Ifremer, MASAE Microbiologie Aliment Santé Environnement, F-44000 Nantes, France
| | - Sandrine Bonnetot
- Ifremer, MASAE Microbiologie Aliment Santé Environnement, F-44000 Nantes, France
| | - Cyril Noël
- Ifremer, IRSI, SeBiMER Service de Bioinformatique de l'Ifremer, F-29280 Plouzané, France
| | - Corinne Sinquin
- Ifremer, MASAE Microbiologie Aliment Santé Environnement, F-44000 Nantes, France
| | - Marc Jérôme
- Ifremer, MASAE Microbiologie Aliment Santé Environnement, F-44000 Nantes, France
| | - Agata Zykwinska
- Ifremer, MASAE Microbiologie Aliment Santé Environnement, F-44000 Nantes, France
| | | | - Raoui Mounir Maaroufi
- Laboratory of Genetics, Biodiversity & Valorisation of Bioresources, Higher Institute of Biotechnology of Monastir, University of Monastir, Ave Tahar Haddad, BP74, Monastir 5000, Tunisia
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Carvalho AM, Soares da Costa D, Reis RL, Pashkuleva I. Influence of Hyaluronan Density on the Behavior of Breast Cancer Cells with Different CD44 Expression. Adv Healthc Mater 2022; 11:e2101309. [PMID: 34694735 DOI: 10.1002/adhm.202101309] [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: 07/02/2021] [Revised: 10/18/2021] [Indexed: 11/10/2022]
Abstract
Molecular gradients are common in biosystems and play an essential role in physiological and pathological processes. During carcinogenesis, for example, hyaluronan (HA) homeostasis is dysregulated by cancer cells and the altered synthesis and degradation processes result in the formation of HA gradients within the tumor microenvironment. Herein, a platform is developed to study the biological role of HA gradient in breast cancer cells. Cells with different aggressiveness and expression of CD44-the main HA receptor usually overexpressed in breast cancers, are selected for this study. The developed platform is compatible with several imaging modalities and allows assessment of cell density, morphology, CD44 expression, and cell motility in a function of HA density. Using high-throughput analysis, it is shown that cells that do not express CD44 do not change along the gradient, while CD44 positive cells respond differently to the HA gradient depending on the level of CD44 expression and HA density. This different response is associated with the activation of different signaling pathways by the CD44-HA interactions.
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Affiliation(s)
- Ana M. Carvalho
- 3B's Research Group ‐ Biomaterials Biodegradable and Biomimetics Avepark ‐ Parque de Ciência e Tecnologia Zona Industrial da Gandra Barco 4805‐017 Portugal
- ICVS/3B's ‐ PT Government Associate Laboratory University of Minho Braga/Guimarães Portugal
| | - Diana Soares da Costa
- 3B's Research Group ‐ Biomaterials Biodegradable and Biomimetics Avepark ‐ Parque de Ciência e Tecnologia Zona Industrial da Gandra Barco 4805‐017 Portugal
- ICVS/3B's ‐ PT Government Associate Laboratory University of Minho Braga/Guimarães Portugal
| | - Rui L. Reis
- 3B's Research Group ‐ Biomaterials Biodegradable and Biomimetics Avepark ‐ Parque de Ciência e Tecnologia Zona Industrial da Gandra Barco 4805‐017 Portugal
- ICVS/3B's ‐ PT Government Associate Laboratory University of Minho Braga/Guimarães Portugal
| | - Iva Pashkuleva
- 3B's Research Group ‐ Biomaterials Biodegradable and Biomimetics Avepark ‐ Parque de Ciência e Tecnologia Zona Industrial da Gandra Barco 4805‐017 Portugal
- ICVS/3B's ‐ PT Government Associate Laboratory University of Minho Braga/Guimarães Portugal
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Niepel MS, Almouhanna F, Ekambaram BK, Menzel M, Heilmann A, Groth T. Cross-linking multilayers of poly-l-lysine and hyaluronic acid: Effect on mesenchymal stem cell behavior. Int J Artif Organs 2018. [PMID: 29528795 DOI: 10.1177/0391398817752598] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Cells possess a specialized machinery through which they can sense physical as well as chemical alterations in their surrounding microenvironment that affect their cellular behavior. AIM In this study, we aim to establish a polyelectrolyte multilayer system of 24 layers of poly-l-lysine and hyaluronic acid to control stem cell response after chemical cross-linking. METHODS AND RESULTS The multilayer build-up process is monitored using different methods, which show that the studied polyelectrolyte multilayer system grows exponentially following the islands and islets theory. Successful chemical cross-linking is monitored by an increased zeta potential toward negative magnitude and an extraordinary growth in thickness. Human adipose-derived stem cells are used here and a relationship between cross-linking degree and cell spreading is shown as cells seeded on higher cross-linked polyelectrolyte multilayer show enhanced spreading. Furthermore, cells that fail to establish focal adhesions on native and low cross-linked polyelectrolyte multilayer films do not proliferate to a high extent in comparison to cells seeded on highly cross-linked polyelectrolyte multilayer, which also show an increased metabolic activity. Moreover, this study shows the relation between cross-linking degree and human adipose-derived stem cell lineage commitment. Histological staining reveals that highly cross-linked polyelectrolyte multilayers support osteogenic differentiation, whereas less cross-linked and native polyelectrolyte multilayers support adipogenic differentiation in the absence of any specific inducers. CONCLUSION Owing to the precise control of polyelectrolyte multilayer properties such as potential, wettability, and viscoelasticity, the system presented here offers great potential for guided stem cell differentiation in regenerative medicine, especially in combination with materials exhibiting a defined surface topography.
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Affiliation(s)
- Marcus S Niepel
- 1 Institute of Pharmacy, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,2 Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Fadi Almouhanna
- 1 Institute of Pharmacy, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,3 Pharmaceutical Biology, Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany
| | - Bhavya K Ekambaram
- 1 Institute of Pharmacy, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Matthias Menzel
- 4 Biological and Macromolecular Materials Business Unit, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | - Andreas Heilmann
- 4 Biological and Macromolecular Materials Business Unit, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | - Thomas Groth
- 1 Institute of Pharmacy, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,2 Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
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Polysaccharide-based hydrogels with tunable composition as 3D cell culture systems. Int J Artif Organs 2018; 41:213-222. [DOI: 10.5301/ijao.5000667] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background:To date, cell cultures have been created either on 2-dimensional (2D) polystyrene surfaces or in 3-dimensional (3D) systems, which do not offer a controlled chemical composition, and which lack the soft environment encountered in vivo and the chemical stimuli that promote cell proliferation and allow complex cellular behavior. In this study, pectin-based hydrogels were developed and are proposed as versatile cell culture systems.Methods:Pectin-based hydrogels were produced by internally crosslinking pectin with calcium carbonate at different initial pH, aiming to control crosslinking kinetics and degree. Additionally, glucose and glutamine were added as additives, and their effects on the viscoelastic properties of the hydrogels and on cell viability were investigated.Results:Pectin hydrogels showed in high cell viability and shear-thinning behavior. Independently of hydrogel composition, an initial swelling was observed, followed by a low percentage of weight variation and a steady-state stage. The addition of glucose and glutamine to pectin-based hydrogels rendered higher cell viability up to 90%-98% after 1 hour of incubation, and these hydrogels were maintained for up to 7 days of culture, yet no effect on viscoelastic properties was detected.Conclusions:Pectin-based hydrogels that offer tunable composition were developed successfully. They are envisioned as synthetic extracellular matrix (ECM) either to study complex cellular behaviors or to be applied as tissue engineering substitutes.
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Materials, Surfaces, and Systems for Extracorporeal Therapies and Beyond. Int J Artif Organs 2017; 40:1-3. [DOI: 10.5301/ijao.5000576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2017] [Indexed: 11/20/2022]
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