Carbon nanotubes embedded in embryoid bodies direct cardiac differentiation

Samad Ahadian, Shukuyo Yamada, Mehdi Estili, Xiaobin Liang, Ramin Banan Sadeghian, Ken Nakajima, Hitoshi Shiku, Tomokazu Matsue, Ali Khademhosseini

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

We embedded carbon nanotubes (CNTs) in mouse embryoid bodies (EBs) for modulating mechanical and electrical cues of the stem cell niche. The CNTs increased the mechanical integrity and electrical conductivity of the EBs. Measured currents for the unmodified EBs (hereafter, EBs) and the EBs-0.25 mg/mL CNTs were 0.79 and 26.3 mA, respectively, at voltage of 5 V. The EBs had a Young’s modulus of 20.9 ± 6.5 kPa, whereas the Young’s modulus of the EB-0.1 mg/mL CNTs was 35.2 ± 5.6 kPa. The EB-CNTs also showed lower proliferation and greater differentiation rates compared with the EBs as determined by the expression of pluripotency genes and the analysis of EB sizes. Interestingly, the cardiac differentiation of the EB-CNTs was significantly greater than that of the EBs, as confirmed by high-throughput gene analysis at day 5 of culture. Applying electrical stimulation to the EB-CNTs specifically enhanced the cardiac differentiation and beating activity of the EBs.

Original languageEnglish
Article number57
JournalBiomedical microdevices
Volume19
Issue number3
DOIs
Publication statusPublished - 2017 Sep 1

Keywords

  • Carbon nanotubes
  • Cardiac differentiation
  • Electrical stimulation
  • Mouse embryoid body
  • Proliferation

ASJC Scopus subject areas

  • Biomedical Engineering
  • Molecular Biology

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