作者
Judy Yeh, Yibo Ling, Jeffrey M Karp, Jay Gantz, Akash Chandawarkar, George Eng, James Blumling Iii, Robert Langer, Ali Khademhosseini
发表日期
2006/11/1
期刊
Biomaterials
卷号
27
期号
31
页码范围
5391-5398
出版商
Elsevier
简介
Encapsulation of mammalian cells within hydrogels has great utility for a variety of applications ranging from tissue engineering to cell-based assays. In this work, we present a technique to encapsulate live cells in three-dimensional (3D) microscale hydrogels (microgels) of controlled shapes and sizes in the form of harvestable free standing units. Cells were suspended in methacrylated hyaluronic acid (MeHA) or poly(ethylene glycol) diacrylate (PEGDA) hydrogel precursor solution containing photoinitiator, micromolded using a hydrophilic poly(dimethylsiloxane) (PDMS) stamp, and crosslinked using ultraviolet (UV) radiation. By controlling the features on the PDMS stamp, the size and shape of the molded hydrogels were controlled. Cells within microgels were well distributed and remained viable. These shape-specific microgels could be easily retrieved, cultured and potentially assembled to generate structures …
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