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Recombinant angioarrestin secreted from mouse melanoma cells inhibits growth of primary tumours

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Smagur A., Szary J., Szala S.

2005

vol. 52

issue 4

875-879

Angioarrestin is a recently described anti-angiogenic protein whose expression is down-regulated in solid tumours of various origins. It has a sequence identical to angiopoietin related protein-1. In this study we investigated anti-tumour properties of angioarrestin in B16 (F10) melanoma tumour model. We constructed an expression vector encoding human angioarrestin under the control of EF-1α promoter. This vector was transferred to B16 (F10) cells and recombinant angioarrestin secreted from the transfected cells was tested for anti-angiogenic activity using endothelial cell proliferation assay. Finally, mice were injected subcutaneously with cells that had been transfected with either angioarrestin-encoding vector or empty vector and tumor growth was compared. The obtained recombinant angioarrestin inhibited proliferation of bovine aortic endothelial cells. Tumours derived from an angioarrestin-secreting B16 (F10) cell clone grew in vivo more slowly than tumours derived from a cell clone transfected with empty vector. These data show, to our knowledge for the first time, that angioarrestin can inhibit primary melanoma tumour growth.

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1 Acta Biochimica Polonica

1 2005

1 Smagur A.

1 Szala S.

1 Szary J.

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Recombinant angioarrestin secreted from mouse melanoma cells inhibits growth of primary tumours