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Transcription factor LIM1 progresses tumor growth in endometrial cancer via CREB signaling.

ABSTRACT: The incidence of endometrial cancer (EC) is increasing worldwide, however, therapeutic options for EC are limited and novel therapeutic targets for EC are required. We reanalyzed RNA-seq data of EC registered in The Cancer Genome Atlas and found significant upregulation of transcription factor LIM homeobox1 (LIM1) in stages II-IV compared to stage I of EC patients. LIM1-knocked down (LIM1-KD) and Control sublines were established using HEC50B cell line and then RNA-sequence results were analyzed by Ingenuity pathway analysis (IPA). It revealed enrichment of CREB signaling-related genes among differentially expressed genes between Control and LIM1-KD sublines. Also, decreased levels of phosphorylated CREB were observed in LIM1-KD subline. In the Xenograft model used by HEC50B sublines, tumor growth was significantly suppressed in the LIM1-KD subline compared to Control subline. Immunofluorescent staining showed decreased phosphorylation of CREB in LIM1-KD-derived tumors. Kaplan-Meier plotter analysis indicated that the high LIM1 expression group had a significantly poorer prognosis. These results suggest that LIM1 in EC progresses tumor growth and malignancy via CREB signaling.

ORGANISM(S): Homo sapiens

PROVIDER: GSE215413 | GEO | 2022/10/16

REPOSITORIES: GEO

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Transcription factor LIM1 progresses tumor growth in endometrial cancer via CREB signaling.

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