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Janzen D, Bakirci E, Faber J, Andrade Mier M, Hauptstein J, Pal A, Forster L, Hazur J, Boccaccini AR, Detsch R, Teßmar J, Budday S, Blunk T, Dalton PD, Villmann C. Reinforced Hyaluronic Acid-Based Matrices Promote 3D Neuronal Network Formation. Adv Healthc Mater 2022; 11:e2201826. [PMID: 35993391 DOI: 10.1002/adhm.202201826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Indexed: 01/28/2023]
Abstract
3D neuronal cultures attempt to better replicate the in vivo environment to study neurological/neurodegenerative diseases compared to 2D models. A challenge to establish 3D neuron culture models is the low elastic modulus (30-500 Pa) of the native brain. Here, an ultra-soft matrix based on thiolated hyaluronic acid (HA-SH) reinforced with a microfiber frame is formulated and used. Hyaluronic acid represents an essential component of the brain extracellular matrix (ECM). Box-shaped frames with a microfiber spacing of 200 µm composed of 10-layers of poly(ɛ-caprolactone) (PCL) microfibers (9.7 ± 0.2 µm) made via melt electrowriting (MEW) are used to reinforce the HA-SH matrix which has an elastic modulus of 95 Pa. The neuronal viability is low in pure HA-SH matrix, however, when astrocytes are pre-seeded below this reinforced construct, they significantly support neuronal survival, network formation quantified by neurite length, and neuronal firing shown by Ca2+ imaging. The astrocyte-seeded HA-SH matrix is able to match the neuronal viability to the level of Matrigel, a gold standard matrix for neuronal culture for over two decades. Thus, this 3D MEW frame reinforced HA-SH composite with neurons and astrocytes constitutes a reliable and reproducible system to further study brain diseases.
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Affiliation(s)
- Dieter Janzen
- Institute for Clinical Neurobiology, University Hospital Würzburg, Versbacherstr. 5, 97078, Würzburg, Germany
| | - Ezgi Bakirci
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University Hospital Würzburg, Pleicherwall 2, 97070, Würzburg, Germany.,Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Jessica Faber
- Department of Mechanical Engineering, Institute of Applied Mechanics, Friedrich-Alexander University of Erlangen-Nürnberg, Egerlandstrasse 5, 91058, Erlangen, Germany
| | - Mateo Andrade Mier
- Institute for Clinical Neurobiology, University Hospital Würzburg, Versbacherstr. 5, 97078, Würzburg, Germany
| | - Julia Hauptstein
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Hospital Würzburg, Oberdürrbacher Str. 6, 97080, Würzburg, Germany
| | - Arindam Pal
- Institute for Clinical Neurobiology, University Hospital Würzburg, Versbacherstr. 5, 97078, Würzburg, Germany
| | - Leonard Forster
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University Hospital Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Jonas Hazur
- Institute of Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander University of Erlangen-Nürnberg, Cauerstr. 6, 91058, Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander University of Erlangen-Nürnberg, Cauerstr. 6, 91058, Erlangen, Germany
| | - Rainer Detsch
- Institute of Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander University of Erlangen-Nürnberg, Cauerstr. 6, 91058, Erlangen, Germany
| | - Jörg Teßmar
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University Hospital Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Silvia Budday
- Department of Mechanical Engineering, Institute of Applied Mechanics, Friedrich-Alexander University of Erlangen-Nürnberg, Egerlandstrasse 5, 91058, Erlangen, Germany
| | - Torsten Blunk
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Hospital Würzburg, Oberdürrbacher Str. 6, 97080, Würzburg, Germany
| | - Paul D Dalton
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University Hospital Würzburg, Pleicherwall 2, 97070, Würzburg, Germany.,Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, 1505 Franklin Blvd, Eugene, OR, 97403, USA
| | - Carmen Villmann
- Institute for Clinical Neurobiology, University Hospital Würzburg, Versbacherstr. 5, 97078, Würzburg, Germany
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Hauptstein J, Forster L, Nadernezhad A, Horder H, Stahlhut P, Groll J, Blunk T, Teßmar J. Bioink Platform Utilizing Dual-Stage Crosslinking of Hyaluronic Acid Tailored for Chondrogenic Differentiation of Mesenchymal Stromal Cells. Macromol Biosci 2021; 22:e2100331. [PMID: 34779129 DOI: 10.1002/mabi.202100331] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/22/2021] [Indexed: 12/20/2022]
Abstract
3D bioprinting often involves application of highly concentrated polymeric bioinks to enable fabrication of stable cell-hydrogel constructs, although poor cell survival, compromised stem cell differentiation, and an inhomogeneous distribution of newly produced extracellular matrix (ECM) are frequently observed. Therefore, this study presents a bioink platform using a new versatile dual-stage crosslinking approach based on thiolated hyaluronic acid (HA-SH), which not only provides stand-alone 3D printability but also facilitates effective chondrogenic differentiation of mesenchymal stromal cells. A range of HA-SH with different molecular weights is synthesized and crosslinked with acrylated (PEG-diacryl) and allylated (PEG-diallyl) polyethylene glycol in a two-step reaction scheme. The initial Michael addition is used to achieve ink printability, followed by UV-mediated thiol-ene reaction to stabilize the printed bioink for long-term cell culture. Bioinks with high molecular weight HA-SH (>200 kDa) require comparably low polymer content to facilitate bioprinting. This leads to superior quality of cartilaginous constructs which possess a coherent ECM and a strongly increased stiffness of long-term cultured constructs. The dual-stage system may serve as an example to design platforms using two independent crosslinking reactions at one functional group, which allows adjusting printability as well as material and biological properties of bioinks.
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Affiliation(s)
- Julia Hauptstein
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University of Würzburg, 97080, Würzburg, Germany
| | - Leonard Forster
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070, Würzburg, Germany
| | - Ali Nadernezhad
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070, Würzburg, Germany
| | - Hannes Horder
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University of Würzburg, 97080, Würzburg, Germany
| | - Philipp Stahlhut
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070, Würzburg, Germany
| | - Jürgen Groll
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070, Würzburg, Germany
| | - Torsten Blunk
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University of Würzburg, 97080, Würzburg, Germany
| | - Jörg Teßmar
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070, Würzburg, Germany
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Hauptstein J, Böck T, Bartolf‐Kopp M, Forster L, Stahlhut P, Nadernezhad A, Blahetek G, Zernecke‐Madsen A, Detsch R, Jüngst T, Groll J, Teßmar J, Blunk T. Hyaluronic Acid-Based Bioink Composition Enabling 3D Bioprinting and Improving Quality of Deposited Cartilaginous Extracellular Matrix. Adv Healthc Mater 2020; 9:e2000737. [PMID: 32757263 DOI: 10.1002/adhm.202000737] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/26/2020] [Indexed: 12/13/2022]
Abstract
In 3D bioprinting, bioinks with high concentrations of polymeric materials are frequently used to enable fabrication of 3D cell-hydrogel constructs with sufficient stability. However, this is often associated with restricted cell bioactivity and an inhomogeneous distribution of newly produced extracellular matrix (ECM). Therefore, this study investigates bioink compositions based on hyaluronic acid (HA), an attractive material for cartilage regeneration, which allow for reduction of polymer content. Thiolated HA and allyl-modified poly(glycidol) in varying concentrations are UV-crosslinked. To adapt bioinks to poly(ε-caprolactone) (PCL)-supported 3D bioprinting, the gels are further supplemented with 1 wt% unmodified high molecular weight HA (hmHA) and chondrogenic differentiation of incorporated human mesenchymal stromal cells is assessed. Strikingly, addition of hmHA to gels with a low polymer content (3 wt%) results in distinct increase of construct quality with a homogeneous ECM distribution throughout the constructs, independent of the printing process. Improved ECM distribution in those constructs is associated with increased construct stiffness after chondrogenic differentiation, as compared to higher concentrated constructs (10 wt%), which only show pericellular matrix deposition. The study contributes to effective bioink development, demonstrating dual function of a supplement enabling PCL-supported bioprinting and at the same time improving biological properties of the resulting constructs.
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Affiliation(s)
- Julia Hauptstein
- Department of Trauma, Hand, Plastic and Reconstructive SurgeryUniversity of Würzburg 97080 Würzburg Germany
| | - Thomas Böck
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer InstituteUniversity of Würzburg 97070 Würzburg Germany
| | - Michael Bartolf‐Kopp
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer InstituteUniversity of Würzburg 97070 Würzburg Germany
| | - Leonard Forster
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer InstituteUniversity of Würzburg 97070 Würzburg Germany
| | - Philipp Stahlhut
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer InstituteUniversity of Würzburg 97070 Würzburg Germany
| | - Ali Nadernezhad
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer InstituteUniversity of Würzburg 97070 Würzburg Germany
| | - Gina Blahetek
- Institute of Experimental Biomedicine IIUniversity Hospital Würzburg 97080 Würzburg Germany
| | - Alma Zernecke‐Madsen
- Institute of Experimental Biomedicine IIUniversity Hospital Würzburg 97080 Würzburg Germany
| | - Rainer Detsch
- Institute of BiomaterialsDepartment of Materials Science and EngineeringUniversity of Erlangen‐Nuremberg 91058 Erlangen Germany
| | - Tomasz Jüngst
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer InstituteUniversity of Würzburg 97070 Würzburg Germany
| | - Jürgen Groll
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer InstituteUniversity of Würzburg 97070 Würzburg Germany
| | - Jörg Teßmar
- Chair for Functional Materials in Medicine and Dentistry and Bavarian Polymer InstituteUniversity of Würzburg 97070 Würzburg Germany
| | - Torsten Blunk
- Department of Trauma, Hand, Plastic and Reconstructive SurgeryUniversity of Würzburg 97080 Würzburg Germany
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