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Osteoprogenitor response to defined topographies with nanoscale depths

Record type: Article

In the development of the next generation of orthopaedic implants for load-bearing applications, an ability to influence osteoprogenitor population activity and function will be highly desirable. This will allow the formation of hard-tissue directly onto the implant, i.e. osseointegration, rather than the formation of fibrous capsules which form around many of the current, non-bioactive, prosthesis. The formation of capsules leads to micromotion due to modulus mismatch and ultimately to fracture and the need for revision surgery.
Microtopography and latterly nanotopography have been shown to elicit influence over adhesion, proliferation and gene expression of a wide number of cell types. This study has examined the possibility of modulating cell adhesion using a range of nanometric scale shallow pits and grooves. The topographies were manufactured using photolithography followed by the production of nickel shims and finally embossing into polymethylmethacrylate.
Cell testing with human osteoprogenitor populations showed that the nanotopographies allowed control of cell adhesion, cytoskeleton, growth and production of the osteoblastic markers osteocalcin and osteopontin. It is concluded that the human bone marrow stromal cells are highly responsive to nanoscale features.

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Citation

Dalby, Matthew John, McCloy, David, Robertson, Mary, Wilkinson, Christopher D.W. and Oreffo, Richard O.C. (2005) Osteoprogenitor response to defined topographies with nanoscale depths Biomaterials, 27, (8), pp. 1306-1315. (doi:10.1016/j.biomaterials.2005.08.028).

More information

Published date: 2005
Keywords: mesenchymal stem cells, osteoprogenitor cells, nanotopography, nanobioscience, cell culture

Identifiers

Local EPrints ID: 25392
URI: http://eprints.soton.ac.uk/id/eprint/25392
ISSN: 0142-9612
PURE UUID: f0ab9516-8b30-4dc3-b4b6-5117f8c1f350
ORCID for Richard O.C. Oreffo: ORCID iD orcid.org/0000-0001-5995-6726

Catalogue record

Date deposited: 07 Apr 2006
Last modified: 17 Jul 2017 16:11

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Contributors

Author: Matthew John Dalby
Author: David McCloy
Author: Mary Robertson
Author: Christopher D.W. Wilkinson

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