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Thiol-ene Clickable Poly(glycidol) Hydrogels for Biofabrication

  • Additive Manufacturing of Biomaterials, Tissues, and Organs
  • Published:
Annals of Biomedical Engineering Aims and scope Submit manuscript

Abstract

In this study we introduce linear poly(glycidol) (PG), a structural analog of poly(ethylene glycol) bearing side chains at each repeating unit, as polymer basis for bioink development. We prepare allyl- and thiol-functional linear PG that can rapidly be polymerized to a three-dimensionally cross-linked hydrogel network via UV mediated thiol-ene click reaction. Influence of polymer concentration and UV irradiation on mechanical properties and swelling behavior was examined. Thiol-functional PG was synthesized in two structural variations, one containing ester groups that are susceptible to hydrolytic cleavage, and the other one ester-free and stable against hydrolysis. This allowed the preparation of degradable and non-degradable hydrogels. Cytocompatibility of the hydrogel was demonstrated by encapsulation of human bone marrow-derived mesenchymal stem cells (hBMSCs). Rheological properties of the hydrogels were adjusted for dispense plotting by addition of high molecular weight hyaluronic acid. The optimized formulation enabled highly reproducible plotting of constructs composed of 20 layers with an overall height of 3.90 mm.

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Acknowledgment

The research leading to these results has received funding from the European Union’s Seventh Framework Programme (FP7/2007–2013) under Grant Agreement n° 309962 (Project HydroZONES) and from the Interdisciplinary Center for Clinical Research Würzburg (Project Number D-219).

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Authors and Affiliations

  1. Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany

    Simone Stichler, Tomasz Jungst, Martha Schamel, Ilona Zilkowski, Matthias Kuhlmann, Jörg Teßmar & Jürgen Groll

  2. Department of Trauma, Hand, Plastic and Reconstructive Surgery, University of Würzburg, Oberdürrbacher Str. 6, 97080, Würzburg, Germany

    Thomas Böck & Torsten Blunk

Authors
  1. Simone Stichler
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  2. Tomasz Jungst
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  3. Martha Schamel
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  4. Ilona Zilkowski
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  5. Matthias Kuhlmann
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  6. Thomas Böck
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  8. Jörg Teßmar
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  9. Jürgen Groll
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Corresponding author

Correspondence to Jürgen Groll.

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Associate Editor Jos Malda oversaw the review of this article.

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Stichler, S., Jungst, T., Schamel, M. et al. Thiol-ene Clickable Poly(glycidol) Hydrogels for Biofabrication. Ann Biomed Eng 45, 273–285 (2017). https://doi.org/10.1007/s10439-016-1633-3

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  • DOI: https://doi.org/10.1007/s10439-016-1633-3

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