Abstract

Abstract Hepatocellular carcinoma (HCC) is one of the most prevalent tumors worldwide. Hydroxysteroid 17-beta dehydrogenase 13 (HSD17B13), which was newly identified as a liver lipid droplet associated protein, was recently found to be down-regulated in HCC. However, the effects of HSD17B13 on the underlying mechanisms of HCC have not yet been fully explored. For this purpose, HSD17B13 gene was knockdown with CRISPER/Cas9 technique in several HCC cell lines. HSD17B13 expression was detected by Flow cytometry and Western blotting with recombinant rabbit monoclonal antibodies (clone OTIR3G2 and OTIR5C10) against HSD17B13 which were screened for use in immunohistochemistry, western blot, and ELISA application. Overexpressed HSD17B13 induces hepatic cell line G1 capture and increases several G1 arrest-related protein expression, including p21, p27, MMP2 and MMP3. Then the proliferation and cell cycle were suppressed. HSD17B13 gene knockdown will reverse the suppression. These data indicated that HSD17B13 play important roles in the progression of HCC lesions. HSD17B13 might be a potential immune-oncology marker for HCC. Citation Format: Tianli Qu, Lipeng Wu, Jina Yom, Zhaoying Guo, Xiaomin Hu, Qi Ren, Qian Niu, Ruei-Shiuan Lin, Dezhong Yin, Xuan Liu, Fu Wei. Overexpression of HSD17B13 induced G1 arrest in hepatic cell lines detected by anti-HSD17B13 recombinant rabbit monoclonal antibody [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 3695.

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