Abstract
This paper aimed to study whether Epstein-Barr virus-encoded latent membrane protein 1 (LMP1) regulates β-catenin signaling pathway in nasopharyngeal carcinoma (NPC). Western blotting, immunofluorescence, luciferase reporter assay, co-immunoprecipitation assay, and immunohistochemistry staining were used. LMP1 increased β-catenin transcriptional activity in NPC cell lines. The upregulation of β-catenin transcriptional activity induced by LMP1 was much higher in poorly differentiated NPC cell line CNE2 than that in well-differentiated NPC cell line CNE1. Immunofluorescence staining and Western blotting also showed that LMP1 increased nuclear β-catenin accumulation in NPC cell lines. Moreover, LMP1 expression was closely related to abnormal β-catenin expression in NPC tissues by immunohistochemistry. LMP1 may be involved in nasopharyngeal carcinogenesis via β-catenin signaling pathway.
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