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Redox-triggerable firefly luciferin-bioinspired hydrogels as injectable and cell-encapsulating matrices

  • Stimuli-responsive hydrogels are smart materials that respond to variations caused by external stimuli and that are currently exploited for biomedical applications such as biosensing, drug delivery and tissue engineering. The development of stimuli-responsive hydrogels with defined user control is relevant to realize materials with advanced properties. Recently, our group reported firefly luciferin-inspired hydrogel matrices for 3D cell culture. This platform exhibited advantages like rapid gelation rate and tunability of mechanical and biological properties. However, this first molecular design did not allow fine control of the gelation onset, which restricts application as a cell-encapsulating matrice with injectable and processable properties. In this article, we endow the firefly luciferin-inspired hydrogels with redox-triggering capability, to overcome the limitations of the previous system and to widen its application range. We achieve this goal by introducing protected macromers as hydrogel polymeric precursors that can be activated in the presence of a mild reductant, to trigger gel formation in situ with a high degree of control. We demonstrate that the regulation of molecular parameters (e.g., structure of the protecting group, reductant type) and environmental parameters (e.g., pH, temperature) of the deprotection reaction can be exploited to modulate materials properties. This redox-triggerable system enables precise control over gelation onset and kinetics, thus facilitating its utilization as an injectable hydrogel without negatively impacting its cytocompatibility. Our findings expand the current toolkit of chemically-based stimuli-responsive hydrogels.

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Metadaten
Document Type:Article
Author:Minye Jin, Alisa Gläser, Julieta I. PaezORCiD
URN:urn:nbn:de:bsz:291:415-3743
DOI:https://doi.org/10.1039/D2PY00481J
ISSN:1759-9954
Parent Title (English):Polymer Chemistry
Volume:13
Issue:35
First Page:5116
Last Page:5126
Language:English
Year of first Publication:2022
Release Date:2022/11/18
Impact:05.582 (2022)
Funding Information:Deutsche Forschungsgemeinschaft (DFG, project no. 422041745)
Research Groups:Dynamical Biomaterials
Open Access:Open Access
Signature:INM 2022/094
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International