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Hao Z, Liu X, He H, Wei Z, Shu X, Wang J, Sun B, Zhou H, Wang J, Niu Y, Hu Z, Hu S, Liu Y, Fu Z. CYP2E1 deficit mediates cholic acid-induced malignant growth in hepatocellular carcinoma cells. Mol Med 2024; 30:79. [PMID: 38844847 PMCID: PMC11157842 DOI: 10.1186/s10020-024-00844-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 05/22/2024] [Indexed: 06/09/2024] Open
Abstract
BACKGROUND Increased level of serum cholic acid (CA) is often accompanied with decreased CYP2E1 expression in hepatocellular carcinoma (HCC) patients. However, the roles of CA and CYP2E1 in hepatocarcinogenesis have not been elucidated. This study aimed to investigate the roles and the underlying mechanisms of CYP2E1 and CA in HCC cell growth. METHODS The proteomic analysis of liver tumors from DEN-induced male SD rats with CA administration was used to reveal the changes of protein expression in the CA treated group. The growth of CA-treated HCC cells was examined by colony formation assays. Autophagic flux was assessed with immunofluorescence and confocal microscopy. Western blot analysis was used to examine the expression of CYP2E1, mTOR, AKT, p62, and LC3II/I. A xenograft tumor model in nude mice was used to examine the role of CYP2E1 in CA-induced hepatocellular carcinogenesis. The samples from HCC patients were used to evaluate the clinical value of CYP2E1 expression. RESULTS CA treatment significantly increased the growth of HCC cells and promoted xenograft tumors accompanied by a decrease of CYP2E1 expression. Further studies revealed that both in vitro and in vivo, upregulated CYP2E1 expression inhibited the growth of HCC cells, blocked autophagic flux, decreased AKT phosphorylation, and increased mTOR phosphorylation. CYP2E1 was involved in CA-activated autophagy through the AKT/mTOR signaling. Finally, decreased CYP2E1 expression was observed in the tumor tissues of HCC patients and its expression level in tumors was negatively correlated with the serum level of total bile acids (TBA) and gamma-glutamyltransferase (GGT). CONCLUSIONS CYP2E1 downregulation contributes to CA-induced HCC development presumably through autophagy regulation. Thus, CYP2E1 may serve as a potential target for HCC drug development.
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Affiliation(s)
- Zhiwei Hao
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China
- Cancer Institute, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Xuemin Liu
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China
- Cancer Institute, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Huanhuan He
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China
- Cancer Institute, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Zhixuan Wei
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Xiji Shu
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China
- Hubei Key Laboratory of Cognitive and Affective Disorders, Jianghan University, Wuhan, 430056, China
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Jianzhi Wang
- Hubei Key Laboratory of Cognitive and Affective Disorders, Jianghan University, Wuhan, 430056, China
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Binlian Sun
- Cancer Institute, School of Medicine, Jianghan University, Wuhan, 430056, China
- Hubei Key Laboratory of Cognitive and Affective Disorders, Jianghan University, Wuhan, 430056, China
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Hongyan Zhou
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China
- Hubei Key Laboratory of Cognitive and Affective Disorders, Jianghan University, Wuhan, 430056, China
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Jiucheng Wang
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Ying Niu
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Zhiyong Hu
- Department of Pathology, Renmin Hospital of Huangpi District of Jianghan University, Wuhan, 430399, China
| | - Shaobo Hu
- Liver transplant center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Yuchen Liu
- Cancer Institute, School of Medicine, Jianghan University, Wuhan, 430056, China.
- Hubei Key Laboratory of Cognitive and Affective Disorders, Jianghan University, Wuhan, 430056, China.
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, 430056, China.
- Liver transplant center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Zhengqi Fu
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China.
- Cancer Institute, School of Medicine, Jianghan University, Wuhan, 430056, China.
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Roberts C. Regulating Retinoic Acid Availability during Development and Regeneration: The Role of the CYP26 Enzymes. J Dev Biol 2020; 8:jdb8010006. [PMID: 32151018 PMCID: PMC7151129 DOI: 10.3390/jdb8010006] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 12/16/2022] Open
Abstract
This review focuses on the role of the Cytochrome p450 subfamily 26 (CYP26) retinoic acid (RA) degrading enzymes during development and regeneration. Cyp26 enzymes, along with retinoic acid synthesising enzymes, are absolutely required for RA homeostasis in these processes by regulating availability of RA for receptor binding and signalling. Cyp26 enzymes are necessary to generate RA gradients and to protect specific tissues from RA signalling. Disruption of RA homeostasis leads to a wide variety of embryonic defects affecting many tissues. Here, the function of CYP26 enzymes is discussed in the context of the RA signalling pathway, enzymatic structure and biochemistry, human genetic disease, and function in development and regeneration as elucidated from animal model studies.
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Affiliation(s)
- Catherine Roberts
- Developmental Biology of Birth Defects, UCL-GOS Institute of Child Health, 30 Guilford St, London WC1N 1EH, UK;
- Institute of Medical and Biomedical Education St George’s, University of London, Cranmer Terrace, Tooting, London SW17 0RE, UK
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Belyaeva OV, Adams MK, Popov KM, Kedishvili NY. Generation of Retinaldehyde for Retinoic Acid Biosynthesis. Biomolecules 2019; 10:biom10010005. [PMID: 31861321 PMCID: PMC7022914 DOI: 10.3390/biom10010005] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 12/14/2019] [Accepted: 12/16/2019] [Indexed: 12/11/2022] Open
Abstract
The concentration of all-trans-retinoic acid, the bioactive derivative of vitamin A, is critically important for the optimal performance of numerous physiological processes. Either too little or too much of retinoic acid in developing or adult tissues is equally harmful. All-trans-retinoic acid is produced by the irreversible oxidation of all-trans-retinaldehyde. Thus, the concentration of retinaldehyde as the immediate precursor of retinoic acid has to be tightly controlled. However, the enzymes that produce all-trans-retinaldehyde for retinoic acid biosynthesis and the mechanisms responsible for the control of retinaldehyde levels have not yet been fully defined. The goal of this review is to summarize the current state of knowledge regarding the identities of physiologically relevant retinol dehydrogenases, their enzymatic properties, and tissue distribution, and to discuss potential mechanisms for the regulation of the flux from retinol to retinaldehyde.
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Affiliation(s)
- Olga V. Belyaeva
- Department of Biochemistry and Molecular Genetics, Schools of Medicine and Dentistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (K.M.P.); (N.Y.K.)
- Correspondence: ; Tel.: +1-205-996-4024
| | - Mark K. Adams
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA;
| | - Kirill M. Popov
- Department of Biochemistry and Molecular Genetics, Schools of Medicine and Dentistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (K.M.P.); (N.Y.K.)
| | - Natalia Y. Kedishvili
- Department of Biochemistry and Molecular Genetics, Schools of Medicine and Dentistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (K.M.P.); (N.Y.K.)
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