期刊
BIOFABRICATION
卷 15, 期 4, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1758-5090/ace47d
关键词
hydrogel microstructures; optical manipulation; spatially organized multicellular structures; in vitro drug evaluation
We propose a laser-guided programmable hydrogel microstructures construction platform for controllable assembly of multiple cellular spheroids into spatially organized multicellular structures, which can be used for in vitro drug evaluation.
Cell-laden hydrogel microstructures have been used in broad applications in tissue engineering, translational medicine, and cell-based assays for pharmaceutical research. However, the construction of cell-laden hydrogel microstructures in vitro remains challenging. The technologies permitting generation of multicellular structures with different cellular compositions and spatial distributions are needed. Herein, we propose a laser-guided programmable hydrogel-microstructures-construction platform, allowing controllable and heterogeneous assembly of multiple cellular spheroids into spatially organized multicellular structures with good bioactivity. And the cell-laden hydrogel microstructures could be further leveraged for in vitro drug evaluation. We demonstrate that cells within hydrogels exhibit significantly higher half-maximal inhibitory concentration values against doxorubicin compared with traditional 2D plate culture. Moreover, we reveal the differences in drug responses between heterogeneous and homogeneous cell-laden hydrogel microstructures, providing valuable insight into in vitro drug evaluation.
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