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논문 기본 정보

자료유형
학술저널
저자정보
Jihwang Park (Zitronics) Michael Müller (Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH) Jungtae Kim (Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH) Helmut Seidel (Saarland University)
저널정보
대한의용생체공학회 Biomedical Engineering Letters (BMEL) Biomedical Engineering Letters (BMEL) Vol.5 No.2
발행연도
2015.1
수록면
140 - 146 (7page)

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Purpose Microarrays of single living cells facilitate elucidation of the biological effects of a drug on a single cell providing large amounts of information regarding cellular chemistry at the molecular level in quantitative manner. Compared to 2D cultures, 3D in vitro cell models provide a more realistic cellular environment and permit the reproduction of in vivo cellular phenotypes. Methods We fabricated a microwell array for single cell analysis that could preserve the native morphology and functionality of HeLa cells by creating microwells with a cell-adhesive inner surface. Dopaminergic inorganic-organic hybrid resin (HR4-DOPA) was used for cell-adhesive layer and fabricated by spin-coating and micro contact printing methods. The physical dimensions of the microwells were designed to achieve high single-cell occupancy. Results Microwells was 25 × 25 μm2 in size from the diameter of a HeLa cell. An optimal depth of microwells and cell concentration for HeLa single-cell occupancy was investigated; 25-μm-deep microwells at 1.0 × 106 cells/ml demonstrated the highest single-cell occupancy of 67.5% while providing a sufficient cell-adhesive surface area for long-term cell culture. We obtained singly occupied microwells with HeLa cells in 1072 microwells from 8 microwell arrays in the 2 × 2mm2 area and with only 5.9% array-to-array variation. Conclusion The number of singly occupied microwells and array-to-array variation provides adequate throughput for accurate quantification in advanced single-cell analysis.

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