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- W2086394668 abstract "Objective The translation initiation factor eIF4E is elevated in all head and neck squamous cell cancers (HNSCCs) and appears to be essential in the progression of solid tumors. Overexpression of eIF4E results in preferential upregulation of two angiogenic factors, vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (FGF-2). We wanted to determine whether reducing eIF4E in a HNSCC cell line could suppress its oncogenic properties and in turn decrease expression of VEGF and FGF-2. Methods Levels of eIF4E protein expression were determined in a panel of HNSCC cell lines. An episomal vector containing antisense RNA to eIF4E was used to reduce the eIF4E level in one of these cell lines, FaDu. After a stable transfection, Western blot analysis was performed to determine the level of eIF4E and FGF-2 reduction, while an enzyme-linked immunosorbent assay (ELISA) was used to determine the level of VEGF reduction. In vitro and in vivo experiments were performed to determine whether there was a reversion in the tumorigenic properties of the FaDu cells. Results All six cell lines had elevated levels of eIF4E compared with Detroit 551, a normal cell line. Reducing eIF4E expression via antisense RNA suppressed both the tumorigenic and angiogenic properties of the FaDu cells, as demonstrated by loss of capacity to grow in soft agar, reduced expression of angiogenic factors, and loss of tumorigenicity in nude mice. Conclusions Antisense RNA therapy to eIF4E can potentially be used as adjuvant therapy for head and neck cancers, particularly in cases in which elevated eIF4E is found in the surgical margins." @default.
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- W2086394668 date "2000-06-01" @default.
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- W2086394668 title "Antisense RNA to eIF4E Suppresses Oncogenic Properties of a Head and Neck Squamous Cell Carcinoma Cell Line" @default.
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- W2086394668 doi "https://doi.org/10.1097/00005537-200006000-00007" @default.
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