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Dr Sloan, Cardiff University

An ex vivo mouse mandible culture model to study inflammatory bone disease

Aims

Using a novel method, slices of living periodontal tissue (tooth, gum, socket bone) from mice will be grown in the laboratory.  Periodontal disease is a painful disease of the gums which can lead to loss of teeth. The aim is to initiate inflammation associated with periodontal disease in these tissue pieces and understand how the disease causes bone and tooth loss.  The results will be used to identify new targets for treatment, or for developing methods for diagnosing the disease sooner. Currently, live mice are used in experiments to investigate the disease.

Method

All the tissues and cells of the mouse mandible will be cultured together so that we can investigate how they behave in an inflammatory disease condition and how this influences bone metabolism. The culture conditions will be manipulated to support the growth of a varied population of cells, which may be transplanted into, or exist naturally within, the system.

Implications for the 3Rs

The study will significantly reduce the amount of unnecessary animal experimentation currently used to study inflammatory cell activity in diseases such as periodontal disease. One animal will now contribute to ten individual experiments, rather than the current one animal per experiment scenario. It has strong potential to translate into clinical practice, contributing to the development of novel therapies. It will have widespread application in the reduction of animal experimentation in a number of other human diseases, such as rheumatoid arthritis and impaired bone fracture healing.

Publications

  1. Singhrao SK, Sloan AJ, Smith EL & Archer CW (2010) Technical Advances in the Sectioning of Dental Tissue and of On-Section Cross-Linked Collagen Detection in Mineralised Teeth. Microscopy Research and Technique, Dec 1 [Epub ahead of print]
    Read the abstract
  2. Smith EL, Locke M, Waddington RJ & Sloan AJ (2010) An Ex-vivo Rodent Mandible Culture Model for Bone Repair. Tissue Engineering: Part C Methods, Apr 26 [Epub ahead of print]
    Read the abstract