Curcumin Induces Apoptosis by Suppressing XRCC4 Expression in Hepatocellular Carcinoma. 2023

Shixin Wang, and Wangqiu Wu, and Yaxin Liu, and Enjia Xing, and Jingtong Jiao, and Ling Li, and Jingmin Li, and Dong Wang
Department of Histology and Embryology, Binzhou Medical University, Yantai, Shandong, China.

Curcumin is a chemical with various pharmacological activities used for cancer treatment. It inhibits hepatocellular carcinoma (HCC) by inducing apoptosis. Here, the mechanism underlying the effect of curcumin on the apoptosis of HCC cells was studied. Cell counting kit-8 and plate cloning assays were used to assess the proliferation of HCC cells, and acridine orange/ethidium bromide and Annexin V/PI staining were used to analyze their apoptosis. HCC xenograft tumor models were established to validate anti-cancer effects of curcumin. Expression levels of XRCC4 protein in tumor tissues were assessed by immunohistochemistry. Correlation between XRCC4 expression and the prognosis of patients with HCC was analyzed by integrating publicly available gene expression data. Curcumin inhibited HCC cells proliferation in a dose-dependent manner. Compared with the control group, curcumin significantly promoted the apoptosis of HCC cells in vitro and in vivo. Immunohistochemical analysis revealed that curcumin downregulated XRCC4 expression levels in HCC tissues. Prognosis of HCC patients with high XRCC4 expression was poorer than that of patients with low XRCC4 expression. Therefore, curcumin exerts anti-cancer effects by inhibiting cell proliferation and promoting cell apoptosis in HCC. This may be due to curcumin interference in the repair process of the nonhomologous DNA terminal link of HCC cells by downregulating XRCC4 expression.

UI MeSH Term Description Entries
D008113 Liver Neoplasms Tumors or cancer of the LIVER. Cancer of Liver,Hepatic Cancer,Liver Cancer,Cancer of the Liver,Cancer, Hepatocellular,Hepatic Neoplasms,Hepatocellular Cancer,Neoplasms, Hepatic,Neoplasms, Liver,Cancer, Hepatic,Cancer, Liver,Cancers, Hepatic,Cancers, Hepatocellular,Cancers, Liver,Hepatic Cancers,Hepatic Neoplasm,Hepatocellular Cancers,Liver Cancers,Liver Neoplasm,Neoplasm, Hepatic,Neoplasm, Liver
D003474 Curcumin A yellow-orange dye obtained from tumeric, the powdered root of CURCUMA longa. It is used in the preparation of curcuma paper and the detection of boron. Curcumin appears to possess a spectrum of pharmacological properties, due primarily to its inhibitory effects on metabolic enzymes. 1,6-Heptadiene-3,5-dione, 1,7-bis(4-hydroxy-3-methoxyphenyl)-, (E,E)-,Curcumin Phytosome,Diferuloylmethane,Mervia,Turmeric Yellow,Phytosome, Curcumin,Yellow, Turmeric
D006528 Carcinoma, Hepatocellular A primary malignant neoplasm of epithelial liver cells. It ranges from a well-differentiated tumor with EPITHELIAL CELLS indistinguishable from normal HEPATOCYTES to a poorly differentiated neoplasm. The cells may be uniform or markedly pleomorphic, or form GIANT CELLS. Several classification schemes have been suggested. Hepatocellular Carcinoma,Hepatoma,Liver Cancer, Adult,Liver Cell Carcinoma,Liver Cell Carcinoma, Adult,Adult Liver Cancer,Adult Liver Cancers,Cancer, Adult Liver,Cancers, Adult Liver,Carcinoma, Liver Cell,Carcinomas, Hepatocellular,Carcinomas, Liver Cell,Cell Carcinoma, Liver,Cell Carcinomas, Liver,Hepatocellular Carcinomas,Hepatomas,Liver Cancers, Adult,Liver Cell Carcinomas
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015972 Gene Expression Regulation, Neoplastic Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control of gene action in neoplastic tissue. Neoplastic Gene Expression Regulation,Regulation of Gene Expression, Neoplastic,Regulation, Gene Expression, Neoplastic
D017209 Apoptosis A regulated cell death mechanism characterized by distinctive morphologic changes in the nucleus and cytoplasm, including the endonucleolytic cleavage of genomic DNA, at regularly spaced, internucleosomal sites, i.e., DNA FRAGMENTATION. It is genetically programmed and serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth. Apoptosis, Extrinsic Pathway,Apoptosis, Intrinsic Pathway,Caspase-Dependent Apoptosis,Classic Apoptosis,Classical Apoptosis,Programmed Cell Death,Programmed Cell Death, Type I,Apoptoses, Extrinsic Pathway,Apoptoses, Intrinsic Pathway,Apoptosis, Caspase-Dependent,Apoptosis, Classic,Apoptosis, Classical,Caspase Dependent Apoptosis,Cell Death, Programmed,Classic Apoptoses,Extrinsic Pathway Apoptoses,Extrinsic Pathway Apoptosis,Intrinsic Pathway Apoptoses,Intrinsic Pathway Apoptosis
D045744 Cell Line, Tumor A cell line derived from cultured tumor cells. Tumor Cell Line,Cell Lines, Tumor,Line, Tumor Cell,Lines, Tumor Cell,Tumor Cell Lines
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular

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