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      Near-Infrared Light-Sensitive Polyvinyl Alcohol Hydrogel Photoresist for Spatiotemporal Control of Cell-Instructive 3D Microenvironments

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          Most cited references 24

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          Photodegradable hydrogels for dynamic tuning of physical and chemical properties.

          We report a strategy to create photodegradable poly(ethylene glycol)-based hydrogels through rapid polymerization of cytocompatible macromers for remote manipulation of gel properties in situ. Postgelation control of the gel properties was demonstrated to introduce temporal changes, creation of arbitrarily shaped features, and on-demand pendant functionality release. Channels photodegraded within a hydrogel containing encapsulated cells allow cell migration. Temporal variation of the biochemical gel composition was used to influence chondrogenic differentiation of encapsulated stem cells. Photodegradable gels that allow real-time manipulation of material properties or chemistry provide dynamic environments with the scope to answer fundamental questions about material regulation of live cell function and may affect an array of applications from design of drug delivery vehicles to tissue engineering systems.
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            Designing cell-compatible hydrogels for biomedical applications.

             Dror Seliktar (2012)
            Hydrogels are polymeric materials distinguished by high water content and diverse physical properties. They can be engineered to resemble the extracellular environment of the body's tissues in ways that enable their use in medical implants, biosensors, and drug-delivery devices. Cell-compatible hydrogels are designed by using a strategy of coordinated control over physical properties and bioactivity to influence specific interactions with cellular systems, including spatial and temporal patterns of biochemical and biomechanical cues known to modulate cell behavior. Important new discoveries in stem cell research, cancer biology, and cellular morphogenesis have been realized with model hydrogel systems premised on these designs. Basic and clinical applications for hydrogels in cell therapy, tissue engineering, and biomedical research continue to drive design improvements using performance-based materials engineering paradigms.
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              Magnetic helical micromachines: fabrication, controlled swimming, and cargo transport.

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                Author and article information

                Journal
                Advanced Materials
                Adv. Mater.
                Wiley
                09359648
                March 2018
                March 2018
                January 15 2018
                : 30
                : 10
                : 1705564
                Affiliations
                [1 ]Laboratory for Biointerfaces; Empa-Swiss Federal Laboratories for Materials Science and Technology; CH-9014 St. Gallen Switzerland
                [2 ]Multi-Scale Robotics Lab; Institute of Robotics and Intelligent Systems; ETH Zürich; CH-8092 Zürich Switzerland
                Article
                10.1002/adma.201705564
                © 2018

                http://doi.wiley.com/10.1002/tdm_license_1.1

                http://onlinelibrary.wiley.com/termsAndConditions#vor

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