Methods: Material from 6 primary osteosarcomas and 3 osteosarcoma cell lines(1) was transplanted subcutaneously and intravenously into nude mice. Xenografts were characterized employing zymography, immunohistochemistry and light and electron microscopy.
Results Tumours were successfully xenotransplanted in one case each of cultured (xenografts T1) and primary (T2) COS cells. The produced xenografts retained donor tumour characteristics, but produced low MMP levels and were self-limiting in nature. Both showed intense positive immunohistochemical staining for MMP-9 in the surrounding tissues, while the tumour cells were mostly negative. Similarly for zymography, the skin surrounding T2 produced higher MMP levels, including the 62 kDa form.
Conclusions The overall tumour intake rate was very low and the xenotransplanted tumours lacked the stability and consistency that are prerequisites for a useful in vivo model. This may be due to a range of factors, including the nature of the material transplanted, the nude mouse as the recipient species, the xenotransplantation techniques used, and the route of cell administration. To our knowledge, there are no other reports of subcutaneously xenotransplanted primary COS. Intraosseous transplantation or the use of a suitable cell substrate may increase the tumour cell intake rate in future studies.
|Number of pages||1|
|Publication status||Published - 2008|
|Event||European Veterinary Conference Voorjaarsdagen 2008 - Amsterdam RAI Conference Centre, Amsterdam, Netherlands|
Duration: 24 Apr 2008 → 26 Apr 2008
|Conference||European Veterinary Conference Voorjaarsdagen 2008|
|Abbreviated title||veterinary medicine|
|Period||24/04/08 → 26/04/08|
Bequest of Brown Emily Perrett “for the benefit of animal health and welfare, including diagnosis and treatment of cancer in cats and dogs.”
Panos Loukopoulos (Recipient), Wayne F. Robinson (Recipient) & John R. Thornton (Recipient), 1997
Panos Loukopoulos (Recipient), 1996