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Deng GH, Wu CF, Li YJ, Shi H, Zhong WC, Hong MK, Li JJ, Zhao JM, Liu C, Qin MC, Zeng ZY, Zhang WM, Yung KKL, Lv ZP, Gao L. Caveolin-1 is critical for hepatic iron storage capacity in the development of nonalcoholic fatty liver disease. Mil Med Res 2023; 10:53. [PMID: 37941054 PMCID: PMC10631186 DOI: 10.1186/s40779-023-00487-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 10/13/2023] [Indexed: 11/10/2023] Open
Abstract
BACKGROUND Nonalcoholic fatty liver disease (NAFLD) is associated with disordered lipid and iron metabolism. Our previous study has substantiated the pivotal role of Caveolin-1 (Cav-1) in protecting hepatocytes and mediating iron metabolism in the liver. This study aimed to explore the specific mechanisms underlying the regulation of iron metabolism by Cav-1 in NAFLD. METHODS Hepatocyte-specific Cav-1 overexpression mice and knockout mice were used in this study. Cav-1-knockdown of RAW264.7 cells and mouse primary hepatocytes were performed to verify the changes in vitro. Moreover, a high-fat diet and palmitic acid plus oleic acid treatment were utilized to construct a NAFLD model in vivo and in vitro, respectively, while a high-iron diet was used to construct an in vivo iron overload model. Besides, iron concentration, the expression of Cav-1 and iron metabolism-related proteins in liver tissue or serum were detected using iron assay kit, Prussian blue staining, Western blotting, immunofluorescence staining, immunohistochemical staining and ELISA. The related indicators of lipid metabolism and oxidative stress were evaluated by the corresponding reagent kit and staining. RESULTS Significant disorder of lipid and iron metabolism occurred in NAFLD. The expression of Cav-1 was decreased in NAFLD hepatocytes (P < 0.05), accompanied by iron metabolism disorder. Cav-1 enhanced the iron storage capacity of hepatocytes by activating the ferritin light chain/ferritin heavy chain pathway in NAFLD, subsequently alleviating the oxidative stress induced by excess ferrous ions in the liver. Further, CD68+CD163+ macrophages expressing Cav-1 were found to accelerate iron accumulation in the liver, which was contrary to the effect of Cav-1 in hepatocytes. Positive correlations were also observed between the serum Cav-1 concentration and the serum iron-related protein levels in NAFLD patients and healthy volunteers (P < 0.05). CONCLUSIONS These findings confirm that Cav-1 is an essential target protein that regulates iron and lipid metabolic homeostasis. It is a pivotal molecule for predicting and protecting against the development of NAFLD.
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Affiliation(s)
- Guang-Hui Deng
- Department of Gastroenterology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
- Department of Hepatology, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China
| | - Chao-Feng Wu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Yun-Jia Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Hao Shi
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Wei-Chao Zhong
- Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, Guangdong, China
| | - Mu-Keng Hong
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Jun-Jie Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Jia-Min Zhao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Chang Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Meng-Chen Qin
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Zhi-Yun Zeng
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Wei-Min Zhang
- Department of Gastroenterology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China
| | - Ken Kin Lam Yung
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong SAR, 999077, China
| | - Zhi-Ping Lv
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Lei Gao
- Department of Gastroenterology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China.
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China.
- Department of Hepatology, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China.
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Kloc M, Kubiak JZ. Monocyte and Macrophage Function Diversity. Int J Mol Sci 2022; 23:ijms232012404. [PMID: 36293261 PMCID: PMC9603855 DOI: 10.3390/ijms232012404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022] Open
Abstract
In the last decade, there has been a tremendous revival of interest in monocyte and macrophages [...]
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Affiliation(s)
- Malgorzata Kloc
- Transplant Immunology, The Houston Methodist Research Institute, Houston, TX 77030, USA
- Department of Surgery, The Houston Methodist Hospital, Houston, TX 77030, USA
- Department of Genetics, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
- Correspondence:
| | - Jacek Z. Kubiak
- Dynamics and Mechanics of Epithelia Group, Faculty of Medicine, Institute of Genetics and Development of Rennes, University of Rennes, CNRS, UMR 6290, 35000 Rennes, France
- Laboratory of Molecular Oncology and Innovative Therapies, Department of Oncology, Military Institute of Medicine, 04-141 Warsaw, Poland
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