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Arzumanian VA, Kiseleva OI, Poverennaya EV. The Curious Case of the HepG2 Cell Line: 40 Years of Expertise. Int J Mol Sci 2021; 22:13135. [PMID: 34884942 PMCID: PMC8658661 DOI: 10.3390/ijms222313135] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/02/2021] [Accepted: 12/02/2021] [Indexed: 02/06/2023] Open
Abstract
Liver cancer is the third leading cause of cancer death worldwide. Representing such a dramatic impact on our lives, liver cancer is a significant public health concern. Sustainable and reliable methods for preventing and treating liver cancer require fundamental research on its molecular mechanisms. Cell lines are treated as in vitro equivalents of tumor tissues, making them a must-have for basic research on the nature of cancer. According to recent discoveries, certified cell lines retain most genetic properties of the original tumor and mimic its microenvironment. On the other hand, modern technologies allowing the deepest level of detail in omics landscapes have shown significant differences even between samples of the same cell line due to cross- and mycoplasma infection. This and other observations suggest that, in some cases, cell cultures are not suitable as cancer models, with limited predictive value for the effectiveness of new treatments. HepG2 is a popular hepatic cell line. It is used in a wide range of studies, from the oncogenesis to the cytotoxicity of substances on the liver. In this regard, we set out to collect up-to-date information on the HepG2 cell line to assess whether the level of heterogeneity of the cell line allows in vitro biomedical studies as a model with guaranteed production and quality.
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The Role of HO-1 and Its Crosstalk with Oxidative Stress in Cancer Cell Survival. Cells 2021; 10:cells10092401. [PMID: 34572050 PMCID: PMC8471703 DOI: 10.3390/cells10092401] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/04/2021] [Accepted: 09/08/2021] [Indexed: 12/19/2022] Open
Abstract
Heme oxygenases (HOs) act on heme degradation to produce carbon monoxide (CO), free iron, ferritin, and biliverdin. Upregulation of cellular HO-1 levels is signature of oxidative stress for its downstream effects particularly under pro-oxidative status. Subcellular traffics of HO-1 to different organelles constitute a network of interactions compromising a variety of effectors such as pro-oxidants, ROS, mitochondrial enzymes, and nucleic transcription factors. Some of the compartmentalized HO-1 have been demonstrated as functioning in the progression of cancer. Emerging data show the multiple roles of HO-1 in tumorigenesis from pathogenesis to the progression to malignancy, metastasis, and even resistance to therapy. However, the role of HO-1 in tumorigenesis has not been systematically addressed. This review describes the crosstalk between HO-1 and oxidative stress, and following redox regulation in the tumorigenesis. HO-1-regulated signaling pathways are also summarized. This review aims to integrate basic information and current progress of HO-1 in cancer research in order to enhance the understandings and facilitate following studies.
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He W, Zhang J, Liu B, Liu X, Liu G, Xie L, He J, Wei M, Li K, Ma J, Dong R, Ma D, Dong K, Ye M. S119N Mutation of the E3 Ubiquitin Ligase SPOP Suppresses SLC7A1 Degradation to Regulate Hepatoblastoma Progression. MOLECULAR THERAPY-ONCOLYTICS 2020; 19:149-162. [PMID: 33209975 PMCID: PMC7644817 DOI: 10.1016/j.omto.2020.09.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/30/2020] [Indexed: 02/07/2023]
Abstract
A previous study on hepatoblastoma revealed novel mutations and cancer genes in the Wnt pathway and ubiquitin ligase complex, including the tumor suppressor speckle-type BTB/POZ (SPOP). Moreover, the SPOP gene affected cell growth, and its S119N mutation was identified as a loss-of-function mutation in hepatoblastoma. This study aimed to explore more functions and the potential mechanism of SPOP and its S119N mutation. The in vitro effects of SPOP on cell proliferation, invasion, apoptosis, and in vivo tumor growth were investigated by western blot analysis, Cell Counting Kit-8, colony formation assay, flow cytometry, and xenograft animal experiments. The substrate of SPOP was discovered by a protein quantification assay and quantitative ubiquitination modification assay. The present study further proved that SPOP functioned as an anti-oncogene through the phosphatidylinositol 3-kinase/Akt signaling pathway to affect various malignant biological behaviors of hepatoblastoma both in vitro and in vivo. Furthermore, experimental results also suggested that solute carrier family 7 member 1 (SLC7A1) might be a substrate of SPOP and influence cell phenotype by regulating arginine metabolism. In conclusion, these findings demonstrated the function of SPOP and revealed a potential substrate related to hepatoblastoma tumorigenesis, which might thus provide a novel therapeutic target for hepatoblastoma.
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Affiliation(s)
- Weijing He
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
| | - Jingjing Zhang
- Department of Medical Imaging, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing 210001, China
| | - Baihui Liu
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
| | - Xiangqi Liu
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
| | - Gongbao Liu
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
| | - Lulu Xie
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
| | - Jiajun He
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
| | - Meng Wei
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
| | - Kai Li
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
| | - Jing Ma
- ENT Institute, Department of Facial Plastic and Reconstructive Surgery, Eye and ENT Hospital, Fudan University, Shanghai 200031, China
| | - Rui Dong
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
| | - Duan Ma
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, Institute of Biomedical Sciences, Collaborative Innovation Center of Genetics and Development, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Shanghai Key Laboratory of Birth Defect, Children’s Hospital of Fudan University, Shanghai 201102, China
- Corresponding author Duan Ma, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, Institute of Biomedical Sciences, Collaborative Innovation Center of Genetics and Development, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.
| | - Kuiran Dong
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
- Corresponding author Kuiran Dong, Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China.
| | - Mujie Ye
- Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China
- Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai 201102, China
- Corresponding author Mujie Ye, Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai 201102, China.
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