Chitooligomer-immobilized biointerfaces with micropatterned geometries for unidirectional alignment of myoblast cells

Pornthida Poosala, Takuya Kitaoka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Skeletal muscle possesses a robust capacity to regenerate functional architectures with a unidirectional orientation. In this study, we successfully arranged skeletal myoblast (C2C12) cells along micropatterned gold strips on which chitohexaose was deposited via a vectorial chain immobilization approach. Hexa-N-acetyl-D-glucosamine (GlcNAc6) was site-selectively modified at its reducing end with thiosemicarbazide, then immobilized on a gold substrate in striped micropatterns via S–Au chemisorption. Gold micropatterns ranged from 100 to 1000 µm in width. Effects of patterning geometries on C2C12 cell alignment, morphology, and gene expression were investigated. Unidirectional alignment of C2C12 cells having GlcNAc6 receptors was clearly observed along the micropatterns. Decreasing striped pattern width increased cell attachment and proliferation, suggesting that the fixed GlcNAc6 and micropatterns impacted cell function. Possibly, interactions between nonreducing end groups of fixed GlcNAc6 and cell surface receptors initiated cellular alignment. Our technique for mimicking native tissue organization should advance applications in tissue engineering.

Original languageEnglish
JournalBiomolecules
Volume6
Issue number1
DOIs
Publication statusPublished - Jan 15 2016

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology

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