Abstract
ATG4D, a member of autophagy-related protein 4 (ATG4) family, plays an interplay role between autophagy and apoptosis in cancers. However, the role of ATG4D in hepatocellular carcinoma (HCC) has not been defined. Herein, this study aimed to investigate the role and the underlying mechanism of ATG4D in regulating HCC cell apoptosis. ATG4D was silenced in MHCC-97L HCC cells, and then cell proliferation and apoptosis were examined. ATG4D expression was significantly upregulated in HCC tissues when compared with paired non-tumor tissues. In vitro assays revealed that silencing of ATG4D significantly suppressed cell proliferation, promoted cell apoptosis, and enhanced sensitivity to cisplatin of MHCC-97L cells. Furthermore, silencing of ATG4D decreased the phosphorylation of Akt and increased the protein level of caspase-3. Taken together, ATG4D may play an oncogenic role in HCC progression. These findings suggest that ATG4D may serve as a therapeutic target for HCC therapy.
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This study was supported by Jiangxi Province Science Foundation for Youths (Award Number 20181BAB215007).
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Conceptualization, Methodology: WL, JZ, and XL; Experiments: WL, TL, BL, and YH; Validation: JZ and XL; Writing: WL; Project Administration: JZ and XL All authors reviewed and approved the paper.
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Zhao, JY., Li, XY., Liu, TD. et al. Silencing of ATG4D suppressed proliferation and enhanced cisplatin-induced apoptosis in hepatocellular carcinoma through Akt/Caspase-3 pathway. Mol Cell Biochem 476, 4153–4159 (2021). https://doi.org/10.1007/s11010-021-04224-z
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DOI: https://doi.org/10.1007/s11010-021-04224-z