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Liu, Li; Kamei, Ken-ichiro; Yoshioka, Momoko; Nakajima, Minako; Li, Junjun; Fujimoto, Nanae; Terada, Shiho; Tokunaga, Yumie; Koyama, Yoshie; Sato, Hideki; Hasegawa, Kouichi; Nakatsuji, Norio; Chen, Yong
Biomaterials, 04/2017, Letnik: 124Journal Article, Web Resource
Abstract Human pluripotent stem cells (hPSCs) hold great potential for industrial and clinical applications. Clinical-grade scaffolds and high-quality hPSCs are required for cell expansion as well as easy handling and manipulation of the products. Current hPSC culture methods do not fulfill these requirements because of a lack of proper extracellular matrices (ECMs) and cell culture wares. We developed a layered nano-on-micro fibrous cellular matrix mimicking ECM, named “fiber-on-fiber (FF)” matrix, which enables easy handling and manipulation of cultured cells. While non-woven sheets of cellulose and polyglycolic acid were used as a microfiber layer facilitating mechanical stability, electrospun gelatin nanofibers were crosslinked on the microfiber layer, generating a mesh structure with connected nanofibers facilitating cell adhesion and growth. Our results showed that the FF matrix supports effective hPSC culture with maintenance of their pluripotency and normal chromosomes over two months, as well as effective scaled-up expansion, with fold increases of 54.1 ± 15.6 and 40.4 ± 8.4 in cell number per week for H1 human embryonic stem cells and 253G1 human induced pluripotent stem cells, respectively. This simple approach to mimicking the extracellular matrix may have important implications after further optimization to generate lineage-specific products.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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