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Supplementary Figure 2 from Proinflammatory Homeobox Gene, ISX, Regulates Tumor Growth and Survival in Hepatocellular Carcinoma

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posted on 2023-03-30, 21:51 authored by Shih-Hsien Hsu, Li-Ting Wang, King-Teh Lee, Yao-Li Chen, Kwei-Yan Liu, Jau-Ling Suen, Chee-Yin Chai, Shen-Nien Wang

PDF file - 160K, Isx protein expression in HCC patient showed high expression correlation with cyclin D1 and Ki67 in HCC tumor cells.

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ARTICLE ABSTRACT

Chronic inflammation drives initiation of hepatocellular carcinoma (HCC), but the underlying mechanisms linking inflammation and tumor formation remain obscure. In this study, we compared the expression of interleukin (IL)-6 and cyclin D1 (CCND1) with the IL-6–induced homeobox gene ISX (intestine-specific homeobox) in 119 paired specimens of HCCs and adjacent normal tissues and also in paired specimens from 11 patients with non-HCCs. In pathologic analysis, ISX exhibited a tumor-specific expression pattern and a high correlation to patient survival time, tumor size, tumor number, and progression stage. Enforced expression of ISX accelerated cell proliferation and tumorigenic activity in hepatoma cells through CCND1 induction. In contrast, short hairpin RNA–mediated attenuation of ISX in hepatoma cells decreased cell proliferation and malignant transformation in vitro and in vivo. A high positive correlation existed in human hepatoma tumors between ISX and CCND1 expression. Together, our results highlight ISX as an important regulator in hepatoma progression with significant potential as a prognostic and therapeutic target in HCCs. Cancer Res; 73(2); 508–18. ©2012 AACR.

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