Influence of nanohydroxyapatite patterns deposited by electrohydrodynamic spraying on osteoblast response

E. Thian, J. Huang, Zeeshan Ahmad, M. Edirisinghe, S. Jayasinghe, D. Ireland, R. Brooks, N. Rushton, S. Best, W. Bonfield

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Electrohydrodynamic spraying has been used to produce patterns of line width up to 100 lm in size on glass discs, using nanohydroxyapatite (nHA). A human osteoblast (HOB)-like cell model was then used to study the interaction between the HOB cells and nHA patterns in vitro. Growth of the cells was significantly increased (p < 0.05) on the nHA surfaces. In addition, HOBs attached and spread well, secreting extracellular matrix. It was found that a confluent, aligned cell layer was achieved on nHA patterns by day 9. Immunofluorescent staining indicated that these cells showed elongated nuclei, enhanced adhesion (vinculin adhesion plaques) and a well-aligned cytoskeleton (actin stress fibres). This work suggests that this type of spraying may provide a route for the production of nanoscale features on implants for biomedical applications.
    Original languageEnglish
    Pages (from-to)188-194
    Number of pages7
    JournalJournal of Biomedical Materials Research Part A
    Volume85A
    Issue number1
    DOIs
    Publication statusPublished - 2008

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