Please use this identifier to cite or link to this item: https://doi.org/10.4028/www.scientific.net/KEM.529-530.34
Title: Apatite-based microcarriers for bone tissue engineering
Authors: Feng, J. 
Chong, M.
Chan, J.
Zhang, Z.Y.
Teoh, S.H.
Thian, E.S. 
Keywords: Alginate
Apatites
Microcarriers
Stem cells
Issue Date: 2013
Citation: Feng, J., Chong, M., Chan, J., Zhang, Z.Y., Teoh, S.H., Thian, E.S. (2013). Apatite-based microcarriers for bone tissue engineering. Key Engineering Materials 529-530 (1) : 34-39. ScholarBank@NUS Repository. https://doi.org/10.4028/www.scientific.net/KEM.529-530.34
Abstract: The current available microcarriers were mainly targeted towards pharmaceutical industries, and might not be suitable for therapeutic implantation. As such, apatite-based microcarriers intended for bone tissue engineering applications would be featured here. Hydroxyapatite-Alginate (HA-Alg) suspension was extruded drop-wise into a calcium chloride (CaCl 2) crosslinking solution. The HA-Alg microcarriers were then sintered to form microcarriers of uniform size. The physicochemical properties were analysed by scanning electron microscopy (SEM), X-ray diffractometery (XRD), and fourier transform infrared (FTIR) spectrophotometry. Cell viability on these microcarriers was evaluated using human fetal mesenchymal stem cells (hfMSCs). SEM images revealed that sintered apatite-based microcarriers exhibited a rough surface topology with interconnected pores. XRD results showed that these microcarriers remained phase-pure since no other secondary calcium phosphate phases were detected. FTIR analysis indicated several sharp phosphate bands coupled with a hydroxyl band (all belonging to HA). Live/dead staining showed that hfMSCs remained viable after 14 days of culture, and cells have spread and covered the surfaces of the microcarriers. Certainly, these cell-loaded microcarriers could be potentially used in bone implant science. © (2013) Trans Tech Publications, Switzerland.
Source Title: Key Engineering Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/85882
ISBN: 9783037855171
ISSN: 10139826
DOI: 10.4028/www.scientific.net/KEM.529-530.34
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