Antagonizing STK25 Signaling Suppresses the Development of Hepatocellular Carcinoma Through Targeting Metabolic, Inflammatory, and Pro-Oncogenic Pathways
| Autor: | Ying Xia, Margit Mahlapuu, Hanns-Ulrich Marschall, Yeshwant Kurhe, Sumit Kumar Anand, Brian W. Howell, Mara Caputo, Sima Kumari, Emmelie Cansby |
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| Rok vydání: | 2022 |
| Předmět: |
DEN
Small interfering RNA STK25 Hepatology business.industry Autophagy NASH Gastroenterology Context (language use) Hepatocellular Carcinoma RC799-869 Diseases of the digestive system. Gastroenterology medicine.disease digestive system diseases Lipotoxicity Apoptosis Hepatocellular carcinoma STAT protein Cancer research Medicine Gene silencing CDAA business |
| Zdroj: | Cellular and Molecular Gastroenterology and Hepatology, Vol 13, Iss 2, Pp 405-423 (2022) |
| ISSN: | 2352-345X |
| Popis: | Background & Aims Hepatocellular carcinoma (HCC) is one of the most fatal and fastest-growing cancers. Recently, nonalcoholic steatohepatitis (NASH) has been recognized as a major catalyst for HCC. Thus, additional research is critically needed to identify mechanisms involved in NASH-induced hepatocarcinogenesis, to advance the prevention and treatment of NASH-driven HCC. Because the STE20-type kinase STK25 exacerbates NASH-related phenotypes, we investigated its role in HCC development and aggravation in this study. Methods Hepatocarcinogenesis was induced in the context of NASH in Stk25 knockout and wild-type mice by combining chemical procarcinogens and a dietary challenge. In the first cohort, a single injection of diethylnitrosamine was combined with a high-fat diet feeding. In the second cohort, chronic administration of carbon tetrachloride was combined with a choline-deficient L-amino-acid–defined diet. To study the cell-autonomous mode of action of STK25, we silenced this target in the human hepatocarcinoma cell line HepG2 by small interfering RNA. Results In both mouse models of NASH-driven HCC, the livers from Stk25-/- mice showed a markedly lower tumor burden compared with wild-type controls. We also found that genetic depletion of STK25 in mice suppressed liver tumor growth through reduced hepatocellular apoptosis and decreased compensatory proliferation, by a mechanism that involves protection against hepatic lipotoxicity and inactivation of signal transducer and activator of transcription 3, extracellular signal-regulated kinase 1/2, and p38 signaling. Consistently, silencing of STK25 suppressed proliferation, apoptosis, migration, and invasion in HepG2 cells, which was accompanied by lower expression of the markers of epithelial–mesenchymal transition and autophagic flux. Conclusions This study provides evidence that antagonizing STK25 signaling hinders the development of NASH-related HCC and provides an impetus for further analysis of STK25 as a therapeutic target for NASH-induced HCC treatment in human beings. |
| Databáze: | OpenAIRE |
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