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- W4297237730 abstract "Esophageal cancer (EC) is the most aggressive malignancy in the gastrointestinal tract. Long noncoding RNA cyclin-dependent kinase inhibitor 2 B antisense RNA 1 (CDKN2B-AS1) is implicated in EC development. However, the specific mechanisms involved remain poorly defined. Therefore, this research aimed to explore the mechanism of action of CDKN2B-AS1 in EC. Quantitative real-time polymerase chain reaction was conducted to measure CDKN2B-AS1 expression in EC cells and western blotting was utilized to evaluate transcription factor AP-2 alpha (TFAP2A) and fascin actin-bundling protein 1 (FSCN1) expression. After gain-of-function and loss-of-function assays, cell proliferation, migration, invasion, apoptosis, and apoptosis-related protein expression were assessed using cell counting kit-8, scratch tests, Transwell assays, flow cytometry, and western blotting, respectively. The binding relationship between CDKN2B-AS1 and TFAP2A was assessed by RNA immunoprecipitation and RNA pull-down assays. The binding relationship between TFAP2A and FSCN1 was evaluated using dual-luciferase reporter and chromatin immunoprecipitation assays. Tumor xenografts from nude mice were used for in vivo verification. CDKN2B-AS1, TFAP2A, and FSCN1 were upregulated in EC cells. Mechanistically, CDKN2B-AS1 transcriptionally activated FSCN1 by recruiting TFAP2A to the FSCN1 promoter. Silencing CDKN2B-AS1 or TFAP2A suppressed EC cell proliferative, migrating, and invasive properties and augmented apoptosis. TFAP2A was bound to CDKN2B-AS1 and the FSCN1 promoter. Overexpression of TFAP2A or FSCN1 abolished the effects of CDKN2B-AS1-silencing on EC cell function. CDKN2B-AS1 silencing curtailed tumorigenesis in nude mice, which was nullified by the upregulation of TFAP2A or FSCN1. Our findings demonstrated the antioncogenic effects of silencing CDKN2B-AS1 in EC through inactivation of the TFAP2A/FSCN1 axis." @default.
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- W4297237730 date "2022-09-26" @default.
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- W4297237730 title "Long noncoding <scp>RNA CDKN2B‐AS1</scp> silencing protects against esophageal cancer cell invasion and migration by inactivating the <scp>TFAP2A</scp> / <scp>FSCN1</scp> axis" @default.
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- W4297237730 doi "https://doi.org/10.1002/kjm2.12596" @default.
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