Micropatterning of endothelial cells to create a capillary-like network with defined architecture by laser-assisted bioprinting

  • Olivia KérourédanEmail author
  • Jean-Michel Bourget
  • Murielle Rémy
  • Sylvie Crauste-Manciet
  • Jérôme Kalisky
  • Sylvain Catros
  • Noëlie B. Thébaud
  • Raphaël Devillard
S.I.: Biofabrication and Bioinks for Tissue Engineering Original Research
Part of the following topical collections:
  1. S.I.: Biofabrication and Bioinks for Tissue Engineering


Development of a microvasculature into tissue-engineered bone substitutes represents a current challenge. Seeding of endothelial cells in an appropriate environment can give rise to a capillary-like network to enhance prevascularization of bone substitutes. Advances in biofabrication techniques, such as bioprinting, could allow to precisely define a pattern of endothelial cells onto a biomaterial suitable for in vivo applications. The aim of this study was to produce a microvascular network following a defined pattern and preserve it while preparing the surface to print another layer of endothelial cells. We first optimise the bioink cell concentration and laser printing parameters and then develop a method to allow endothelial cells to survive between two collagen layers. Laser-assisted bioprinting (LAB) was used to pattern lines of tdTomato-labeled endothelial cells cocultured with mesenchymal stem cells seeded onto a collagen hydrogel. Formation of capillary-like structures was dependent on a sufficient local density of endothelial cells. Overlay of the pattern with collagen I hydrogel containing vascular endothelial growth factor (VEGF) allowed capillary-like structures formation and preservation of the printed pattern over time. Results indicate that laser-assisted bioprinting is a valuable technique to pre-organize endothelial cells into high cell density pattern in order to create a vascular network with defined architecture in tissue-engineered constructs based on collagen hydrogel.



This work was supported by the Institut français pour la recherche odontologique (IFRO) and Bordeaux Consortium for Regenerative Medicine (BxCRM). The authors acknowledge «Fondation des Gueules Cassées, Paris-France » (n°54-2017) and « Fondation de l’Avenir, Paris-France» (N°AP-RM-17-038) for their financial support. The authors would also like to thank Sophia Ziane (INSERM U1026, Bordeaux, France), Nathalie Dusserre and Davit Hakobyan (ART Bioprint, INSERM U1026, Bordeaux, France) and Sébastien Marais (Bordeaux Imaging Center, Bordeaux, France) for their excellent technical support.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

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Supplementary Movie
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Supplementary Figure 1
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Supplementary Figure 2
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Supplementary Figure 3


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Olivia Kérourédan
    • 1
    • 2
    • 3
    Email author
  • Jean-Michel Bourget
    • 1
    • 6
  • Murielle Rémy
    • 1
    • 2
  • Sylvie Crauste-Manciet
    • 4
    • 5
  • Jérôme Kalisky
    • 1
    • 2
  • Sylvain Catros
    • 1
    • 2
    • 3
  • Noëlie B. Thébaud
    • 1
    • 2
    • 3
  • Raphaël Devillard
    • 1
    • 2
    • 3
  1. 1.INSERM, Bioingénierie Tissulaire, U1026BordeauxFrance
  2. 2.Université de Bordeaux, Bioingénierie Tissulaire, U1026BordeauxFrance
  3. 3.CHU de Bordeaux, Services d’Odontologie et de Santé BuccaleBordeauxFrance
  4. 4.Université de Bordeaux, ARNA Laboratory, team ChemBioPharm, U1212 INSERM – UMR 5320 CNRSBordeauxFrance
  5. 5.CHU de Bordeaux, Pharmacie du Groupe Hospitalier SudPessacFrance
  6. 6.Energie, matériaux et télécommunicationInstitut National de Recherche ScientifiqueVarenneCanada

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