Efficient Encapsulation and Sustained Release of Basic Fibroblast Growth Factor in Nanofilm: Extension of the Feeding Cycle of Human Induced Pluripotent Stem Cell Culture

Uiyoung Han, Hee Ho Park, Yu Jin Kim, Tai Hyun Park, Ju Hyun Park, Jinkee Hong

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Basic fibroblast growth factor (bFGF) has an established pivotal function in biomedical engineering, especially for the human pluripotent stem cells (iPSCs). However, the limitation of bFGF is the ease of denaturation under normal physiological conditions, inducing loss of its activity. In this study, we designed multi-trilayered nanofilm composed of a repeating polycation/polyanion/bFGF structure, which has high loading efficiency and short buildup time. We also investigated that the loading and release of bFGF from the nanofilm with two parameters (counter-polyanion and film architectures). Then, we prepared the optimized nanofilm which maintains a sustained bFGF level in physiological condition to apply the nanofilm to human iPSCs culture. The amount of bFGF release from 12 trilayer nanofilm was 36.4 ng/cm2, and activity of bFGF encapsulated into the nanofilm was maintained (60%) until 72 h during incubation at 37 °C. As a result, the iPSCs grown in the presence of the nanofilm with tridaily replacement of growth medium maintained undifferentiated morphology and expression levels of pluripotency marker proteins.

Original languageEnglish
Pages (from-to)25087-25097
Number of pages11
JournalACS Applied Materials and Interfaces
Volume9
Issue number30
DOIs
Publication statusPublished - 2017 Aug 2

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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