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Multidimensional assembly using layer-by-layer deposition for synchronized cardiac macro tissues

Authors
Jang, YongjunJung, Da JungChoi, Seung-CheolLim, Do-SunKim, Jong-HoonJeoung, Gi SeokKim, JongseongPark, Yongdoo
Issue Date
18-5월-2020
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v.10, no.32, pp.18806 - 18815
Indexed
SCIE
SCOPUS
Journal Title
RSC ADVANCES
Volume
10
Number
32
Start Page
18806
End Page
18815
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/55670
DOI
10.1039/d0ra01577f
ISSN
2046-2069
Abstract
The fabrication of biomimetic structures for tissues and organs is emerging in the fields of biomedical engineering and precision medicine. While current progress in biomedical research provides a number of biofabrication methods, the construction of multi-dimensional cardiac tissue is highly challenging due to difficulties in the maturation and synchronization of cardiomyocytes (CMs) in conjunction with other types of cells, such as myofibroblasts and endothelial cells. Here, we show a simple fabrication methodology to construct multi-dimensional cardiac macro tissue (mCMT) by layer-by-layer (LBL) deposition of cells on micro patterned PDMS. mCMTs formed by LBL deposition of pluripotent stem cell (PSC)-derived cardiomyocytes and cardiac fibroblasts formed 3D patterned structures with synchronized beating characteristics. We also demonstrate that cardiac maturation factors such as the gene expression of MLC2v and cTNI and formation of sarcomeres in mCMTs were significantly enhanced by LBL deposition and growth factors during the maturation process. Fabrication of matured mCMTs with synchronized beating enables providing an efficient platform for evaluating the efficacy and toxicity of drug candidates. These results have important implications because mCMTs are applicable to diverse in vitro studies and drug screening methods that require tissue-like structures and functions in a physiological environment.
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