title: Dynamic manipulation of hydrogels to control cell behavior: a review.
abstract: For many tissue engineering applications and studies to understand how materials fundamentally affect cellular functions, it is important to have the ability to synthesize biomaterials that can mimic elements of native cell-extracellular matrix interactions. Hydrogels possess many properties that are desirable for studying cell behavior. For example, hydrogels are biocompatible and can be biochemically and mechanically altered by exploiting the presentation of cell adhesive epitopes or by changing hydrogel crosslinking density. To establish physical and biochemical tunability, hydrogels can be engineered to alter their properties upon interaction with external driving forces such as pH, temperature, electric current, as well as exposure to cytocompatible irradiation. Additionally, hydrogels can be engineered to respond to enzymes secreted by cells, such as matrix metalloproteinases and hyaluronidases. This review details different strategies and mechanisms by which biomaterials, specifically hydrogels, can be manipulated dynamically to affect cell behavior. By employing the appropriate combination of stimuli and hydrogel composition and architecture, cell behavior such as adhesion, migration, proliferation, and differentiation can be controlled in real time. This three-dimensional control in cell behavior can help create programmable cell niches that can be useful for fundamental cell studies and in a variety of tissue engineering applications.
authors.affiliation: 1 Department of Biomedical Engineering, University of Rochester , Rochester, New York.
authors.forename: Kanika
authors.initials: K
authors.lastname: Vats
authors.forename: Danielle S W
authors.initials: DS
authors.lastname: Benoit
mesh_terms: D000818:Animals; D002477:Cells / Q000166:cytology* / Q000187:drug effects*; D006801:Humans; D020100:Hydrogels / Q000737:chemistry* / Q000494:pharmacology*; D008422:Materials Testing
chemical_list: D020100:Hydrogels
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