Abstract
Injectable microgels show great promising applications in cell therapy and drug delivery. Currently, there remains a challenge to rapidly and cost-effectively fabricate customized microgels. Here, we present a digital light processing based three-dimensional (3D) printing process to fabricate microgels with tailored shapes and sizes. The microgels are constructed by the digital light controlled polymerization of photopolymerizable monomer solution within 2 s. By mixing nanoparticle-encapsulated drugs into the monomer solution, the microgels with sustained drug release can be readily prepared. Also, cells can be printed into microgels with survival and proliferation. In conclusion, this study provides a 3D printing process for customizing functional microgels containing drugs or cells with potential therapeutic applications.
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