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Li Y, Qin M, Zhong W, Liu C, Deng G, Yang M, Li J, Ye H, Shi H, Wu C, Lin H, Chen Y, Huang S, Zhou C, Lv Z, Gao L. RAGE promotes dysregulation of iron and lipid metabolism in alcoholic liver disease. Redox Biol 2022; 59:102559. [PMID: 36502724 PMCID: PMC9758571 DOI: 10.1016/j.redox.2022.102559] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/24/2022] [Accepted: 11/26/2022] [Indexed: 12/03/2022] Open
Abstract
Alcoholic liver disease (ALD) is associated with hepatic inflammatory activation and iron overload. The receptor for advanced glycation end products (RAGE) is an important metabolic mediator during the development of ALD. The aim of this study was to determine the effect of RAGE on iron homeostasis in ALD. We found increased circulating transferrin, hepcidin and ferritin in ALD patients and positively correlated with RAGE level. RAGE knockout (RAGE-/-) and wild-type mice were subjected to chronic alcoholic feeding for 6 weeks to induce ALD, and RAGE inhibitor, iron chelator or lipid peroxidation inhibitor were administered. We showed that chronic alcohol administration triggered hepatic steatosis, inflammation, and oxidative stress, which were eliminated by deficiency or inhibition of RAGE. Surprisingly, pathways of hepatic iron metabolism were significantly altered, including increased iron uptake (Tf/TfR) and storage (Ferritin), as well as decreased iron export (FPN1/Hepcidin). In vitro experiments confirmed that RAGE had different effects on the mechanism of iron metabolism of hepatocytes and macrophages respectively. In conclusion, our data revealed preclinical evidence for RAGE inhibition as an effective intervention for alleviating alcohol-induced liver injury.
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Affiliation(s)
- Yunjia Li
- Zhujiang Hospital, Southern Medical University, Guangzhou, China,School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Mengchen Qin
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Weichao Zhong
- Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, Guangdong, China
| | - Chang Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Guanghui Deng
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China,Integrated Hospital of Traditional Chinese and Western Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Menghan Yang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Junjie Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Haixin Ye
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Hao Shi
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Chaofeng Wu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Haiyan Lin
- Shenzhen Hospital, University of Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Yuyao Chen
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Shaohui Huang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Chuying Zhou
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhiping Lv
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Lei Gao
- Zhujiang Hospital, Southern Medical University, Guangzhou, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China; Integrated Hospital of Traditional Chinese and Western Medicine, Southern Medical University, Guangzhou, Guangdong, China.
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