10 Axl signalling was also shown to be able to drive migration and extravasation of breast cancer cells from the bloodstream even in the absence of vimentin, indicating that Axl is a highly significant regulator of metastasis. 10 This is further supported by the fact that Axl has been shown to regulate migration/invasion through induction of matrix metalloproteinase 9 (MMP9). 11 In addition, Axl activation stimulated by its ligand Gas6 induced expression of the pro-survival family of proteins Bcl
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Axl-EGFR receptor tyrosine kinase hetero-interaction provides EGFR with access to pro-invasive signalling in cancer cells.
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