Synthesis of SiO2 nanostructures from Pennisetum glaucum and their effect on osteogenic differentiation for bone tissue engineering applications

  • Jegan Athinarayanan
  • Vaiyapuri Subbarayan Periasamy
  • Akram Ahmed Qasem
  • Reshod A. Al-Shagrawi
  • Ali A. AlshatwiEmail author
Tissue Engineering Constructs and Cell Substrates Original Research
Part of the following topical collections:
  1. Tissue Engineering Constructs and Cell Substrates


Silica nanostructures were fabricated from Pennisetum glaucum (pearl millet) seed husk by acid-pretreatment and calcination. The fabricated silica nanostructure (SN) functional groups, crystalline nature, surface morphology, and particle size were analyzed by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy, respectively. Additionally, the cytocompatibility of SNs was analyzed on human mesenchymal stem cells (hMSCs) in an MTT assay, propidium iodine (PI) staining, and acridine orange/ethidium bromide (AO/EB) staining. We observed peaks at 1090 and 800 cm−1, which were assigned to symmetric, asymmetric, and bending vibrations of O–Si–O. The SNs showed an amorphous nature with a spherical shape and were 20–60 nm in diameter. The MTT assay results indicated that SNs exhibited cytocompatibility in hMSCs. The PI staining and AO/EB staining results suggested that SNs do not affect nuclear morphology at up to 400 μg/mL. Furthermore, SNs effect on osteogenic differentiation in hMSCs was studied. These results indicate that SNs induced osteogenic differentiation in hMSCs by upregulation of ALP, BSP, ON and RUNX2 genes. Our process could valorize the Pennisetum glaucum agricultural residues to high value products for bone tissue engineering applications.



We gratefully acknowledge the financial support of the Distinguished Scientist Fellowship Programme, King Saud University, Saudi Arabia. The partial work of this manuscript has achieved a US patent (US patent granted on 2 August 2016, US 9403688 B1).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Jegan Athinarayanan
    • 1
  • Vaiyapuri Subbarayan Periasamy
    • 1
  • Akram Ahmed Qasem
    • 1
  • Reshod A. Al-Shagrawi
    • 1
  • Ali A. Alshatwi
    • 1
    Email author
  1. 1.Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food and Agricultural SciencesKing Saud UniversityRiyadhSaudi Arabia

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