Bacteria-laden microgels as autonomous three-dimensional environments for stem cell engineering

K. Witte, A. Rodrigo-Navarro, M. Salmeron-Sanchez

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


A one-step microfluidic system is developed in this study which enables the encapsulation of stem cells and genetically engineered non-pathogenic bacteria into a so-called three-dimensional (3D) pearl lace–like microgel of alginate with high level of monodispersity and cell viability. The alginate-based microgel constitutes living materials that control stem cell differentiation in either an autonomous or heteronomous manner. The bacteria (Lactococcus lactis) encapsulated within the construct surface display adhesion fragments (III7-10 fragment of human fibronectin) for integrin binding while secreting growth factors (recombinant human bone morphogenetic protein-2) to induce osteogenic differentiation of human bone marrow–derived mesenchymal stem cells. We concentrate on interlinked pearl lace microgels that enabled us to prototype a low-cost 3D bioprinting platform with highly tunable properties.

Original languageEnglish
Article number100011
JournalMaterials Today Bio
Publication statusPublished - Mar 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Biomaterials
  • Biomedical Engineering
  • Molecular Biology
  • Cell Biology


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