Home Neoplasma 2022 Neoplasma Vol.69, No.1, p.174–182, 2022

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Neoplasma Vol.69, No.1, p.174–182, 2022

Title: ISOC1 is a novel potential tumor suppressor in hepatocellular carcinoma
Author: Jiao Xiang, Xiao-Qiang Gao, Xiang-Ling Chen, Yin-Ying Lu

Abstract: Isochorismatase domain-containing 1 (ISOC1) plays a carcinogenic role in various tumors. However, its expression and role in hepatocellular carcinoma (HCC) have not been elucidated. This is the first study to investigate the involvement of ISOC1 in HCC growth and migration. ISOC1 expression was analyzed using public databases and clinical samples, and clinical specimens were analyzed by real-time quantitative polymerase chain reaction, western blotting, and immunohistochemistry. ISOC1 was also overexpressed in two HCC cell lines (Huh7 and HepG2) to explore how ISOC1 affects HCC cells. Finally, a nude mouse xenograft tumor model was used to investigate the role of ISOC1 in HCC cell tumorigenicity. ISOC1 was downregulated in HCC tissues compared to that in matched paracancerous tissues, and low ISOC1 expression was associated with a poor prognosis. The proliferation and single-cell colony-forming ability of the ISOC1-overexpressing cell lines Huh7 and HepG2 were significantly inhibited. Moreover, ISOC1 overexpression suppressed the migration and invasion abilities of HCC cells in vitro, and ISOC1 upregulation hindered tumor growth in the xenograft tumor model in vivo. Therefore, ISOC1 is a potential HCC suppressor protein.

Keywords: hepatocellular carcinoma; ISOC1; migration; invasion; proliferation
Published online: 30-Nov-2021
Year: 2022, Volume: 69, Issue: 1 Page From: 174, Page To: 182
doi:10.4149/neo_2021_210815N1157


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