International Journal of General Medicine (Jan 2022)

PSME4 Activates mTOR Signaling and Promotes the Malignant Progression of Hepatocellular Carcinoma

  • Ge S,
  • Huang H,
  • Huang W,
  • Ji R,
  • Chen J,
  • Wu S,
  • Wang L,
  • Huang T,
  • Sheng Y,
  • Yan H,
  • Lu C,
  • Ma L

Journal volume & issue
Vol. Volume 15
pp. 885 – 895

Abstract

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Sijia Ge,1,* Hua Huang,2,* Wei Huang,1 Ran Ji,1 Jing Chen,1 Shuzhen Wu,1 Liyang Wang,1 Tianxin Huang,1 Yu Sheng,1 Haiou Yan,1 Cuihua Lu,1 Lin Ma3 1Department of Gastroenterology, Affiliated Hospital of Nantong University, Jiangsu, People’s Republic of China; 2Department of Pathology, Affiliated Hospital of Nantong University, Jiangsu, People’s Republic of China; 3Department of Gastroenterology, Affiliated Haian Hospital of Nantong University, Jiangsu, People’s Republic of China*These authors contributed equally to this workCorrespondence: Lin MaDepartment of Gastroenterology, Affiliated Haian Hospital of Nantong University, Nantong, 226600, Jiangsu, People’s Republic of China, Email [email protected] LuDepartment of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People’s Republic of China, Email [email protected]: As hepatocellular carcinoma (HCC) having the second-highest mortality rate globally, the early diagnosis and prognosis of HCC have always been the focus of various studies. Although PSME4 has been reported to be closely related to several malignancies, its role in HCC remains unclear.Materials and Methods: The TCGA-LIHC database and HCC tissues were used to explore the expression of PSME4 in HCC. Gene set enrichment analysis (GSEA) was used to forecast the biological behavior of HCC cells that PSME4 might be involved in regulation. In addition, CCK-8, colony formation and flow cytometry assays were used to explore the effect of PSME4 on HCC cells. Furthermore, the underlying PSME4-related signaling pathways in HCC were further confirmed using GSEA.Results: We found that the expression of PSME4 in HCC tissues was significantly higher than that in adjacent normal tissues, and patients with high PSME4 expression have a poor prognosis. CCK-8, colony formation and flow cytometry assays shown that knockdown of PSME4 inhibits HCC cell proliferation of HCC cells, promotes cell apoptosis and moves the cell cycle away from the S phase. Mechanistically, PSME4 may promote the development of HCC through mTOR signaling pathway.Conclusion: The high expression of PSME4 in HCC promotes the proliferation of HCC cells via the mTOR signalling pathway. Therefore, PSME4 is an emerging tumour marker for the early diagnosis and prognosis of HCC.Keywords: hepatocellular carcinoma, mTOR signaling, liver cancer prognosis, PSME4

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