Precision-Engineered Nanotopographical Surfaces to Control Osteoclast Differentiation

Young, P.S., Greer, A.I.M., Tsimbouri, P.M. , Meek, R.M.D., Gadegaard, N. and Dalby, M.J. (2016) Precision-Engineered Nanotopographical Surfaces to Control Osteoclast Differentiation. In: The British Orthopaedic Research Society (BORS) Annual Conference, Glasgow, UK, 5-6 Sept 2016,

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Publisher's URL: http://www.bjjprocs.boneandjoint.org.uk/content/98-B/SUPP_16/8

Abstract

We have developed precision-engineered strontium eluting nanopatterned surfaces. Nanotopography has been shown to increase osteoblast differentiation, and strontium is an element similar to calcium, which has been proven to increase new bone formation and mineralization. This combination has great potential merit in fusion surgery and arthroplasty, as well as potential to reduce osteoporosis. However, osteoclast mediated osteolysis is responsible for the aseptic failure of implanted biomaterials, and there is a paucity of literature regarding osteoclast response to nanoscale surfaces. Furthermore, imbalance in osteoclast/osteoblast resorption is responsible for osteoporosis, a major healthcare burden. We aimed to assess the affect of strontium elution nanopatterned surfaces on osteoblast and osteoclast differentiation. We developed a novel human osteoblast/osteoclast co-culture system without extraneous supplementation to closely represent the in vivo environment. We assessed the surfaces using electron microscopy (SEM), protein expression using immunofluorescence and histochemical staining and gene expression using polymerase chain reaction (PCR). In complex co-culture significantly increased osteoblast differentiation and bone formation was noted on the strontium eluting, nanopatterned and nanopatterned strontium eluting surfaces, suggesting improved osteointegration. There was a reduction in macrophage attachment on these surfaces as well, suggesting specific anti-osteoclastogenic properties of this surface. Our results show that osteoblast and osteoclast differentiation can be controlled through use of nanopatterned and strontium eluting surface features, with significant bone formation seen on these uniquely designed surfaces.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Tsimbouri, Dr Penelope and Dalby, Professor Matthew and Greer, Mr Andrew and Gadegaard, Professor Nikolaj
Authors: Young, P.S., Greer, A.I.M., Tsimbouri, P.M., Meek, R.M.D., Gadegaard, N., and Dalby, M.J.
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
ISSN:1358-992X

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