Expression of Axl, a receptor tyrosine kinase, is increased in cutaneous squamous cell carcinoma (SCC). Examination of a series of cutaneous SCC tumors revealed positive phospho-Akt (P-Akt) staining accompanied by weak TUNEL staining in Axl-positive tumors, suggesting an anti-apoptotic role for Axl in SCC survival. The role of Axl in UV-induced apoptosis was investigated in a cutaneous SCC cell line using retroviral short hairpin RNA sequences enabling stable Axl knock-down. We show that, alt...Expand abstract
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Axl promotes cutaneous squamous cell carcinoma survival through negative regulation of pro-apoptotic Bcl-2 family members.
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