The Axl/UFO receptor tyrosine kinase (RTKs) family includes Axl/UFO/Tyro7, Sky/Tyro3, and c-Mer/Tyro12. These RTKs have a conserved intracellular tyrosine kinase domain and extracellular domains that include immunoglobulin-like and fibronectin-type moieties similar to those found in cell adhesion molecules. The ligand for these receptors is the vitamin Kdependent protein growth-arrest-specific 6 (Gas6), which is structurally related to the protein S anticoagulation factor. Upon binding to its receptor, Gas6 activates phosphatidylinositol 3- kinase (PI3K) and its downstream targets Akt and S6K, as well as NF-κB. Axl is overexpressed in several cancers, including breast, lung, liver, colon, gastric, ovarian, pancreatic, and glioblastoma. The Axl/Gas6 signalling pathway has been shown to drive cancer cell survival, proliferation, migration and invasion, and several therapeutic strategies are being developed to regulate Axl cell signaling.
References
Antony, J. & Huang, R.Y. (2017) Cancer Res. 77(14):3725.Zhu, C. et al. (2019) Mol Cancer. 18(1):153.
Western blot of human MDA-MB-231 breast carcinoma (lane 1), PC-3 prostate adenocarcinoma (lane 2), A549 lung carcinoma (lane 3), NCI-H1915 lung carcinoma (lane 4), and A431 epidermoid carcinoma (lane 5). The blot was probed with mouse monoclonal anti-Axl (AM0471) at 1:1000.
Immunocytochemical labeling of Axl in aldehyde fixed human MDAMB-231 breast carcinoma cells. The cells were labeled with mouse monoclonal anti-Axl (AM0471). The antibody was detected using goat anti-mouse DyLight® 594.
Representative Standard Curve using mouse monoclonal anti-Axl (AM0471) for ELISA capture of human recombinant Axl extracellular region with a His-tag. Captured protein was detected by suitable anti-His-tag antibody followed by appropriate secondary antibody HRP conjugate.
*For more information, see UniProt Accession P30530
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*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blotmobilities of known proteins with similar MW.
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