Noncovalent Hydrogel Beads as Microcarriers for Cell Culture |
| |
Authors: | Dr. Robert Wieduwild Swati Krishnan Karolina Chwalek Annett Boden Mirko Nowak David Drechsel Prof. Dr. Carsten Werner Dr. Yixin Zhang |
| |
Affiliation: | 1. B CUBE Center for Molecular Bioengineering, Technische Universit?t Dresden, Arnoldstra?e 18, 01307 Dresden (Germany);2. Leibniz‐Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials and Technische Universit?t Dresden, Hohe Stra?e 6, 01069 Dresden (Germany);3. Max Planck Institute of Molecular Cell Biology and Genetics, Protein Expression, Pfotenhauerstra?e 108, 01307 Dresden (Germany);4. Leibniz‐Institut für Polymerforschung Dresden e.V., Max Bergmann Center of Biomaterials and Technische Universit?t Dresden, Hohe Stra?e 6, 01069 Dresden (Germany)B CUBE Center for Molecular Bioengineering, Technische Universit?t Dresden, Arnoldstra?e 18, 01307 Dresden (Germany);5. B CUBE Center for Molecular Bioengineering, Technische Universit?t Dresden, Arnoldstra?e 18, 01307 Dresden (Germany)B CUBE Center for Molecular Bioengineering, Technische Universit?t Dresden, Arnoldstra?e 18, 01307 Dresden (Germany) |
| |
Abstract: | Hydrogel beads as microcarriers could have many applications in biotechnology. However, bead formation by noncovalent cross‐linking to achieve high cell compatibility by avoiding chemical reactions remains challenging because of rapid gelation rates and/or low stability. Here we report the preparation of homogeneous, tunable, and robust hydrogel beads from peptide–polyethylene glycol conjugates and oligosaccharides under mild, cell‐compatible conditions using a noncovalent crosslinking mechanism. Large proteins can be released from beads easily. Further noncovalent modification allows for bead labeling and functionalization with various compounds. High survival rates of embedded cells were achieved under standard cell culture conditions and after freezing the beads, demonstrating its suitability for encapsulating and conserving cells. Hydrogel beads as functional system have been realized by generating protein‐producing microcarriers with embedded eGFP‐secreting insect cells. |
| |
Keywords: | beads cell encapsulation gels noncovalent interactions protein release |
|
|