Enzymatically prepared redox-responsive hydrogels as potent matrices for hepatocellular carcinoma cell spheroid formation

Kousuke Moriyama, Shono Naito, Rie Wakabayashi, Masahiro Goto, Noriho Kamiya

研究成果: ジャーナルへの寄稿学術誌査読

20 被引用数 (Scopus)

抄録

Cellular spheroids have been received much attention in the biological and biomedical fields, especially as a base material for drug assays, regenerative medicine, and tissue engineering. Hydrogels have potential for scalable preparation of spheroids because they provide a spatial environment suitable for three-dimensional cell cultivation. Herein, the potential use of a redox-responsive hydrogel as a scaffold for preparation and recovery of spheroids is reported. A hydrogel composed of poly(ethylene glycol) (PEG), which can be degraded using cysteine as a reducing agent under mild conditions, is prepared by mixing an octa-thiolated PEG derivative (8-arm PEG-SH), horseradish peroxidase and a small phenolic compound (Glycyl-L-tyrosine). Human hepatocellular carcinoma cells (HepG2) are encapsulated in the hydrogel and cellular spheroids formed by proliferation within the scaffolds. After seven days of cultivation, the size of the HepG2 spheroids reached a diameter between ≈40 and 60 μm, depending on the 8-arm PEG-SH concentration. Liver-specific functions of the HepG2 spheroids such as albumin secretion and urea production are retained at higher levels than those of cells prepared from traditional two-dimensional mono layers. These results suggest that the system presented here has potential for preparation of cellular spheroids for tissue engineering applications.

本文言語英語
ページ(範囲)1452-1460
ページ数9
ジャーナルBiotechnology Journal
11
11
DOI
出版ステータス出版済み - 11月 1 2016

!!!All Science Journal Classification (ASJC) codes

  • 応用微生物学とバイオテクノロジー
  • 分子医療

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