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Ding C, Wang Z, Dou X, Yang Q, Ning Y, Kao S, Sang X, Hao M, Wang K, Peng M, Zhang S, Han X, Cao G. Farnesoid X receptor: From Structure to Function and Its Pharmacology in Liver Fibrosis. Aging Dis 2023:AD.2023.0830. [PMID: 37815898 DOI: 10.14336/ad.2023.0830] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/30/2023] [Indexed: 10/12/2023] Open
Abstract
The farnesoid X receptor (FXR), a ligand-activated transcription factor, plays a crucial role in regulating bile acid metabolism within the enterohepatic circulation. Beyond its involvement in metabolic disorders and immune imbalances affecting various tissues, FXR is implicated in microbiota modulation, gut- to-brain communication, and liver disease. The liver, as a pivotal metabolic and detoxification organ, is susceptible to damage from factors such as alcohol, viruses, drugs, and high-fat diets. Chronic or recurrent liver injury can culminate in liver fibrosis, which, if left untreated, may progress to cirrhosis and even liver cancer, posing significant health risks. However, therapeutic options for liver fibrosis remain limited in terms of FDA- approved drugs. Recent insights into the structure of FXR, coupled with animal and clinical investigations, have shed light on its potential pharmacological role in hepatic fibrosis. Progress has been achieved in both fundamental research and clinical applications. This review critically examines recent advancements in FXR research, highlighting challenges and potential mechanisms underlying its role in liver fibrosis treatment.
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Affiliation(s)
- Chuan Ding
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
- Jinhua Institute, Zhejiang Chinese Medical University, Jinhua, China
| | - Zeping Wang
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xinyue Dou
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qiao Yang
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yan Ning
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shi Kao
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xianan Sang
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Min Hao
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Kuilong Wang
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Mengyun Peng
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shuosheng Zhang
- College of Chinese Materia Medica and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Xin Han
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
- Jinhua Institute, Zhejiang Chinese Medical University, Jinhua, China
| | - Gang Cao
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
- Jinhua Institute, Zhejiang Chinese Medical University, Jinhua, China
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Tang J, Zeng J, Chen L, Wang M, He S, Muhmood A, Chen X, Huang K, Gan F. Farnesoid X Receptor Plays a Key Role in Ochratoxin A-Induced Nephrotoxicity by Targeting Ferroptosis In Vivo and In Vitro. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14365-14378. [PMID: 37750412 DOI: 10.1021/acs.jafc.3c04560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
The mycotoxin ochratoxin A (OTA) causes nephrotoxicity, hepatotoxicity, and immunotoxicity in animals and humans. The farnesoid X receptor (FXR) is a member of the NR family and is highly expressed in the kidney, which has an antilipid production function. Ferroptosis is an iron-dependent form of regulated cell death involved in several pathophysiological cell death and kidney injury. The present study aims to evaluate the role of FXR and ferroptosis in OTA-induced nephrotoxicity in mice and HK-2 cells. Results showed that OTA induced nephrotoxicity as demonstrated by inducing the histopathological lesions and neutrophil infiltration of the kidney, increasing serum BUN, CRE, and UA levels, increasing Ntn-1, Kim-1, and pro-inflammatory cytokine expression, and decreasing IL-10 expression and the cell viability of HK-2 cells. OTA treatment also induced FXR deficiency, ROS release, MDA level increase, GSH content decrease, and 4-HNE production in the kidney and HK-2 cells. OTA treatment induced ferroptosis as demonstrated by increasing labile iron pool and lipid peroxidation levels as well as Acsl4, TFR1, and HO-1 mRNA and protein levels, decreasing GPX4 and FTH mRNA and protein expressions, and inducing mitochondrial injury. The FXR activator (GW4064) rescued the accumulation of lipid peroxides, intracellular ROS, and Fe2+, inhibited ferroptosis, and alleviated OTA-induced nephrotoxicity. The ferroptosis inhibitor (Fer-1) prevented ferroptosis and attenuated nephrotoxicity. Collectively, this study elucidates that FXR played a critical role in OTA-induced nephrotoxicity via regulation of ferroptosis, which provides a novel strategy against OTA-induced nephrotoxicity.
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Affiliation(s)
- Jiangyu Tang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- Institute of Animal Nutritional Health, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Junya Zeng
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- Institute of Animal Nutritional Health, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Li Chen
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- Institute of Animal Nutritional Health, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Mengmeng Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- Institute of Animal Nutritional Health, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Suibin He
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- Animal Husbandry and Aquatic Products Technology Promotion Center of Pudong New Area, Shanghai 201299, China
| | - Azhar Muhmood
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- Institute of Animal Nutritional Health, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Xingxiang Chen
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- Institute of Animal Nutritional Health, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Kehe Huang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- Institute of Animal Nutritional Health, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
| | - Fang Gan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- Institute of Animal Nutritional Health, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
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Zhang L, Lin W, Cai Y, Huang Z, Zhao R, Yan T, Xu H, Liu Z. Farnesoid X receptor activation is required for the anti-inflammatory and anti-oxidative stress effects of Alisol B 23-acetate in carbon tetrachloride-induced liver fibrosis in mice. Int Immunopharmacol 2023; 123:110768. [PMID: 37573684 DOI: 10.1016/j.intimp.2023.110768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/23/2023] [Accepted: 08/02/2023] [Indexed: 08/15/2023]
Abstract
Previous studies have shown that Alisol B 23-acetate (23ABA) had potent liver-protection effects, however, its roles and potential mechanisms in carbon tetrachloride (CCl4)-induced liver fibrosis remain to be determined. The present study aimed to investigate the effects of 23ABA on CCl4-induced liver fibrosis and tried to elucidate the underlying mechanisms by focusing on regulating of farnesoid X receptor (FXR). In vivo study found that 23ABA alleviated the CCl4-induced liver injury, and showed no obvious systemic toxicity on mice. 23ABA inhibited the collagen production, decreased sera levels of hyaluronic acid (HA) and procollagen type III (PC-III), lowered mRNA expression of α-smooth muscle actin (α-SMA), fibronectin, collagen I and collagen III in livers of mice. 23ABA inhibited the mRNA expressions and the sera levels of interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α), as well as decreased the expression of cyclooxygenase 2 (COX-2) in fibrotic livers of mice. Besides, 23ABA decreased levels of reactive oxygen species (ROS) and malondialdehyde (MDA), increased glutathione (GSH) level, enhanced activities of superoxide dismutase (SOD) and glutathione reductase (GR) as well as increased mRNA expression of nuclear factor-E2-related factor 2 (Nrf2), glutamate-cysteine ligase, catalytic subunit (GCLC) and glutamate-cysteine ligase, modifier subunit (GCLM). Further study showed that the anti-liver injury and anti-fibrotic effects of 23ABA were abrogated by FXR antagonist guggulsterone (GS) in vivo. In addition, the inhibition effects of 23ABA on liver inflammation and oxidative stress were also weakened by treatment with GS in CCl4-induced fibrotic mice livers. In conclusion, the protective effects of 23ABA against CCl4-induced liver injury and fibrosis, due to FXR-mediated regulation of liver inflammation and oxidative stress.
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Affiliation(s)
- Libei Zhang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, China
| | - Weiling Lin
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, China
| | - Yunqing Cai
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, China
| | - Ziyou Huang
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, China
| | - Rui Zhao
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, China
| | - Tingdong Yan
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, China
| | - Hongtao Xu
- Teaching and Research Section of Clinical Medicine, Jiangsu Vocational College of Medicine, Yancheng 224005, China.
| | - Zhaoguo Liu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province 226001, China.
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Song J, Lu X, Liu D, Zhang Y, Zhai X, Zhou L, Gao J. Fucogalactan Sulfate (FS) from Laminaria japonica Regulates Lipid Metabolism in Diet-Induced Humanized Dyslipidemia Mice via an Intestinal FXR-FGF19-CYP7A1/CYP8B1 Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14027-14037. [PMID: 37702045 DOI: 10.1021/acs.jafc.3c04683] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Our previous study found that fucogalactan sulfate (FS) from Laminaria japonica exhibited significant hypolipidemic effects. To further elucidate the mechanism, we first constructed a dyslipidemia mouse model with humanized gut microbiota and proved the main differential metabolic pathway involved bile acid metabolism. Then, we evaluated the beneficial effects of FS on dyslipidemia in this model mice, which revealed that oral FS administration reduced serum cholesterol levels and mitigated liver fat accumulation. Gut microbiota and microbiome analysis showed FS increased the abundance of Ruminococcaceae_NK4A214_group, GCA-900066755, and Eubacterium, which were positively associated with the fecal DCA, β-MCA, and HDCA. Further investigation demonstrated that FS inhibited the hepatic farnesoid X receptor (FXR), while activating the intestinal FXR-FGF19 pathway, leading to suppression of CYP7A1 and CYP8B1, as well as potentially reduced bile acid synthesis and lipid absorption. Overall, FS regulated lipid metabolism in diet-induced humanized dyslipidemia mice via the bile acid-mediated intestinal FXR-FGF19-CYP7A1/CYP8B1 pathway.
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Affiliation(s)
- Jiangping Song
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Xingyu Lu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Denghong Liu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Yuwei Zhang
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Xiaoning Zhai
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Liuyang Zhou
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Jie Gao
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
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Structural Characterization and Anti-Nonalcoholic Fatty Liver Effect of High-Sulfated Ulva pertusa Polysaccharide. Pharmaceuticals (Basel) 2022; 16:ph16010062. [PMID: 36678559 PMCID: PMC9865482 DOI: 10.3390/ph16010062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023] Open
Abstract
The high-sulfated derivative of Ulva pertusa polysaccharide (HU), with unclear structure, has better anti-hyperlipidmia activity than U pertusa polysaccharide ulvan (U). In this study, we explore the main structure of HU and its therapeutic effect against nonalcoholic fatty liver disease (NAFLD). The main structure of HU was elucidated using FT-IR and NMR (13C, 1H, COSY, HSQC, HMBC). The anti-NAFLD activity of HU was explored using the high-fat diet mouse model to detect indicators of blood lipid and liver function and observe the pathologic changes in epididymal fat and the liver. Results showed that HU had these main structural fragments: →4)-β-D-Glcp(1→4)-α-L-Rhap2,3S(1→; →4)-α-L-Rhap3S(1→4)-β-D-Xylp2,3S(1→; →4)-α-L-Rhap3S(1→4)-β-D-Xylp(1→; →4)-α-L-IdopA3S(1→4)-α-L-Rhap3S(1→; →4)-β-D-GlcpA(1→3)-α-L-Rhap(1→; →4)-α-L-IdopA3S(1→4)-β-D-Glcp3Me(1→; →4)-β-D-Xylp2,3S(1→4)-α-L-IdopA3S(1→; and →4)-β-D-Xylp(1→4)-α-L-IdopA3S(1→. Treatment results indicated that HU markedly decreased levels of TC, LDL-C, TG, and AST. Furthermore, lipid droplets in the liver were reduced, and the abnormal enlargement of epididymal fat cells was suppressed. Thus, HU appears to have a protective effect on the development of NAFLD.
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