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Han H, Zhang JM, Ji S, Zeng XB, Jin XC, Shen ZQ, Xie B, Luo XN, Li K, Liu LP. Histology and transcriptomic analysis reveal the inflammation and affected pathways under 2-methylisoborneol (2-MIB) exposure on grass carp. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 938:173233. [PMID: 38763196 DOI: 10.1016/j.scitotenv.2024.173233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 03/19/2024] [Accepted: 05/12/2024] [Indexed: 05/21/2024]
Abstract
2-Methylisoborneol (2-MIB) is a common and widely distributed off-flavor compound in water. However, the toxic mechanisms of 2-MIB on aquatic organisms remain largely unexplored. In this study, grass carp larvae were exposed to different concentrations (0, 5, and 20 μg L-1) of 2-MIB for 96 h. The accumulation of 2-MIB in the dorsal muscle was measured. Histological analysis, ultrastructure observations, and transcriptomic sequencing were conducted on the liver tissues. The results showed that 2-MIB accumulated significantly in the fish muscle, with the accumulation increasing as the exposure concentration increased through gas chromatography-mass spectrometry (GC-MS) detection. Histological and ultrastructure observations indicated that 2-MIB caused concentration-dependent inflammatory infiltration and mitochondrial damage in the liver. Transcriptomic analysis revealed lipid metabolism disorders induced by exposure to 2-MIB in grass carp. Additionally, 5 μg L-1 2-MIB affected the neurodevelopment and cardiovascular system of grass carp larvae through extracellular matrix (ECM)-receptor interaction and focal adhesion pathway. Furthermore, several pathways related to the digestive system were significantly enriched, implying that 2-MIB may impact pancreatic secretion function, protein digestion and absorption processes. These findings provide new insights into the potential toxicological mechanisms of 2-MIB.
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Affiliation(s)
- Huan Han
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China
| | - Jun-Ming Zhang
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China
| | - Shuang Ji
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China
| | - Xiang-Biao Zeng
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China
| | - Xi-Chen Jin
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China
| | - Zi-Qian Shen
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China
| | - Bin Xie
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China
| | - Xue-Neng Luo
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China
| | - Kang Li
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China; Center for Ecological Aquaculture (CEA), Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
| | - Li-Ping Liu
- China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Shanghai), Shanghai Ocean University, Shanghai 201306, China; Center for Ecological Aquaculture (CEA), Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
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Singh A, Ansari A, Gupta J, Singh H, Jagavelu K, Sashidhara KV. Androsin alleviates non-alcoholic fatty liver disease by activating autophagy and attenuating de novo lipogenesis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 129:155702. [PMID: 38749344 DOI: 10.1016/j.phymed.2024.155702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 04/10/2024] [Accepted: 04/30/2024] [Indexed: 05/30/2024]
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is a chronic liver disease with therapeutic options on the horizon. Picrorhiza kurroa, enriched with iridoid glycosides like picroside I and picroside II is known for its hepatoprotective activity and anti-inflammatory properties. Androsin, the other phytochemical present in P. kurroa has been shown to have anti-inflammatory and anti-asthmatic properties. However, its role in NAFLD is yet to be investigated. PURPOSE This study aims to identify the potent hepatoprotective agent from P. kurroa that can attenuate NAFLD in HFrD-fed ApoE-/- mice, and elucidate the underlying mechanisms governing its effects. METHODS Classical purification methods were used to isolate seven compounds, including picroside I, picroside II and androsin from the roots of P. kurroa. NAFLD-induced ApoE-/- mice were administered orally with either picroside I, picroside II, or androsin for 7 weeks. Animals were scanned non-invasively by ultrasonography at 1st and 14th week. Gross histomorphometry was examined by HE and Sirius red staining. mRNA transcript and protein profile associated with autophagy, lipogenesis, inflammation, and fibrosis was done through RT-PCR and Western blot analysis. RESULTS In-vitro and in-vivo studies revealed that among the seven evaluated compounds, androsin shows the most potent in-vitro activity. Oral dosing of androsin (10 mg/kg) protected the liver against HFrD-induced NAFLD in ApoE-/- mice model. Biochemical analysis revealed a reduction in ALT and AST enzymes and a significant reduction in cholesterol levels. Hepatocyte ballooning, hepatic lipid deposition, inflammation, and fibrosis were reduced. Androsin treatment significantly reduced fibrosis (α-SMA, collagens, TGF-β) and inflammation (ILs, TNF-α, NFκB) in ApoE-/- mice. Mechanistically, androsin activated AMPKα and down-regulated the expression of SREBP-1c, resulting in ameliorating hepatic lipogenesis. CONCLUSION Our results support autophagy as one of the therapeutic strategies to reduce steatosis and hepatic damage. We found that androsin treatment significantly ameliorated hepatic steatosis, serum lipid levels, and hepatic injury in ApoE-/- induced by HFrD. Androsin administration mitigated lipogenesis by inhibiting SREBP1c/FASN pathway and activating autophagy through AMPKα/PI3K/Beclin1/LC3 pathway.
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Affiliation(s)
- Abhinav Singh
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, U.P., India
| | - Alisha Ansari
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Jankipuram Extension, Sitapur Road, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, U.P., India
| | - Jay Gupta
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Himalaya Singh
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, U.P., India
| | - Kumaravelu Jagavelu
- Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, U.P., India..
| | - Koneni V Sashidhara
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Jankipuram Extension, Sitapur Road, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, U.P., India.; Sophisticated Analytical Instrument Facility & Research, CSIR-Central Drug Research Institute, Jankipuram Extension, Sitapur Road, Lucknow 226031, U.P., India.
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3
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Khatoon S, Das N, Chattopadhyay S, Joharapurkar A, Singh A, Patel V, Nirwan A, Kumar A, Mugale MN, Mishra DP, Kumaravelu J, Guha R, Jain MR, Chattopadhyay N, Sanyal S. Apigenin-6-C-glucoside ameliorates MASLD in rodent models via selective agonism of adiponectin receptor 2. Eur J Pharmacol 2024; 978:176800. [PMID: 38950835 DOI: 10.1016/j.ejphar.2024.176800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 06/13/2024] [Accepted: 06/28/2024] [Indexed: 07/03/2024]
Abstract
Adiponectin plays key roles in energy metabolism and ameliorates inflammation, oxidative stress, and mitochondrial dysfunction via its primary receptors, adiponectin receptors -1 and 2 (AdipoR1 and AdipoR2). Systemic depletion of adiponectin causes various metabolic disorders, including MASLD; however adiponectin supplementation is not yet achievable owing to its large size and oligomerization-associated complexities. Small-molecule AdipoR agonists, thus, may provide viable therapeutic options against metabolic disorders. Using a novel luciferase reporter-based assay here, we have identified Apigenin-6-C-glucoside (ACG), but not apigenin, as a specific agonist for the liver-rich AdipoR isoform, AdipoR2 (EC50: 384 pM) with >10000X preference over AdipoR1. Immunoblot analysis in HEK-293 overexpressing AdipoR2 or HepG2 and PLC/PRF/5 liver cell lines revealed rapid AMPK, p38 activation and induction of typical AdipoR targets PGC-1α and PPARα by ACG at a pharmacologically relevant concentration of 100 nM (reported cMax in mouse; 297 nM). ACG-mediated AdipoR2 activation culminated in a favorable modulation of key metabolic events, including decreased inflammation, oxidative stress, mitochondrial dysfunction, de novo lipogenesis, and increased fatty acid β-oxidation as determined by immunoblotting, QRT-PCR and extracellular flux analysis. AdipoR2 depletion or AMPK/p38 inhibition dampened these effects. The in vitro results were recapitulated in two different murine models of MASLD, where ACG at 10 mg/kg body weight robustly reduced hepatic steatosis, fibrosis, proinflammatory macrophage numbers, and increased hepatic glycogen content. Together, using in vitro experiments and rodent models, we demonstrate a proof-of-concept for AdipoR2 as a therapeutic target for MASLD and provide novel chemicobiological insights for the generation of translation-worthy pharmacological agents.
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Affiliation(s)
- Shamima Khatoon
- Division of Biochemistry and Structural Biology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Nabanita Das
- Division of Biochemistry and Structural Biology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Sourav Chattopadhyay
- Division of Biochemistry and Structural Biology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | | | - Abhinav Singh
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Vishal Patel
- Zydus Research Center, Moraiya, Ahmedabad, 382213, Gujarat, India
| | - Abhishek Nirwan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Akhilesh Kumar
- Division of Toxicology and Experimental Medicine, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Madhav Nilakanth Mugale
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; Division of Toxicology and Experimental Medicine, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Durga Prasad Mishra
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Jagavelu Kumaravelu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Rajdeep Guha
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; Laboratory Animal Facility, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | | | - Naibedya Chattopadhyay
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Sabyasachi Sanyal
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Wang X, Hu T, Jiang Y, He Y, Li P, Peng W, Wang Y, Su W. Jingzhi Guanxin Oral Liquids Attenuate Atherosclerotic Coronary Heart Disease via Modulating Lipid Metabolism and PPAR-Related Targets. Pharmaceuticals (Basel) 2024; 17:784. [PMID: 38931451 PMCID: PMC11206304 DOI: 10.3390/ph17060784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/27/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Jingzhi Guanxin Oral Liquids (JZGX), a traditional Chinese medicine formulation prepared from the decoction of five herbs, has been utilized to relieve chest pain with coronary artery disease (CAD). However, the chemical composition and therapeutic mechanisms of JZGX remain obscured. In this research, the potential targets and pathways of JZGX against CAD were anticipated through network pharmacology based on analyzing its chemical constituents using UPLC-Q-TOF-MS/MS. One hundred seven ingredients in JZGX were identified. The 39 active chemicals and 37 key targets were screened, and CAD-related signaling pathways were clustered, mainly associated with lipid metabolism. Subsequently, the atherosclerotic CAD animal model employing 24 weeks of high-fat diet (HFD) ApoE-/- mice was constructed to investigate the JZGX efficacy and underlying mechanisms validating network forecasts. The histological staining examination and cardiovascular biomarker tests confirmed that JZGX reduced plaque formation in the aorta and decreased blood lipids in vivo. It featured anti-inflammatory, anti-thrombotic, and myocardial protective effects. JZGX prevented excessive lipid deposits and inflammation within the liver and exhibited hepatoprotective properties. Serum untargeted metabolomics analysis indicated that JZGX ameliorated metabolic abnormalities in atherosclerotic CAD mice and prompted lipid metabolism, especially linoleic acid. The PPARs and attached critical targets (SREBP1, FASN, PTGS2, and CYP3A), filtered from the networks and connected with lipid metabolism, were dramatically modulated through JZGX administration, as revealed by western blotting. The molecular docking outcomes showed that all 39 active ingredients in JZGX had good binding activity with PPARα and PPARγ. These findings illustrate that JZGX alleviates atherosclerotic CAD progression by remodeling the lipid metabolism and regulating PPAR-related proteins.
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Affiliation(s)
| | | | | | | | | | | | | | - Weiwei Su
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Reevaluation of Post-Market Traditional Chinese Medicine, Guangdong Key Laboratory of Plant Resources, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
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Kang C, Xiao Q, Wang X, Guo W, Zhang H, Yuan L, Zhao Z, Hao W. Chlormequat chloride induces hepatic steatosis by promoting mTOR/SREBP1 mediated lipogenesis via AMPK inhibition. Food Chem Toxicol 2024; 190:114790. [PMID: 38849044 DOI: 10.1016/j.fct.2024.114790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/22/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Chlormequat chloride (CCC), a widely used plant growth regulator, is a choline analogue that has been shown to have endocrine-disrupting effects. Previous studies have shown that maternal exposure to CCC could induce hyperlipidemia and growth disruption in rat offspring. This study aims to further investigate the effects of peripubertal exposure to CCC on pubertal development and lipid homeostasis, as well as the underlying mechanisms. In vivo, male weanling rats were exposed to CCC (0, 20, 75 and 200 mg/kg bw/day) from post-natal day 21-60 via daily oral gavage. The results in rats showed that 75 mg/kg CCC treatment induced hepatic steatosis, predominantly microvesicular steatosis with a small amount of macrovesicular steatosis, in rat livers and 200 mg/kg CCC treatment induced liver damage including inflammatory infiltration, hepatic sinusoidal dilation and necrosis. In vitro, HepG2 cells were treated with CCC (0, 30, 60, 120, 240 and 480 μg/mL) for 24 h. And the results showed that CCC above 120 μg/mL induced an increase in triglyceride and neutral lipid levels of HepG2 cells. Mechanism exploration revealed that CCC treatment promoted the activation of mTOR/SREBP1 signalling pathway and inhibited activation of AMPK in both in vivo rat livers and in vitro HepG2 cells. Treatment with AMPK activator Acadesine (AICAR) could alleviate the lipid accumulation in HepG2 cells induced by CCC. Collectively, the present results indicate that CCC might induce hepatic steatosis by promoting mTOR/SREBP1 mediated lipogenesis via AMPK inhibition.
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Affiliation(s)
- Chengping Kang
- Department of Toxicology, School of Public Health, Peking University Health Science Center, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Qianqian Xiao
- Department of Toxicology, School of Public Health, Peking University Health Science Center, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Xiaoxia Wang
- Department of Toxicology, School of Public Health, Peking University Health Science Center, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Wanqian Guo
- Department of Toxicology, School of Public Health, Peking University Health Science Center, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Haoran Zhang
- Department of Toxicology, School of Public Health, Peking University Health Science Center, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Lilan Yuan
- Department of Toxicology, School of Public Health, Peking University Health Science Center, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Zhe Zhao
- Department of Toxicology, School of Public Health, Peking University Health Science Center, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China
| | - Weidong Hao
- Department of Toxicology, School of Public Health, Peking University Health Science Center, Beijing, 100191, PR China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, PR China.
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Aguilar EC, Fernandes-Braga W, Santos EA, Leocádio PCL, Dos Santos Aggum Capettini L, Orellano LAA, Campos PP, Lemos VS, Soares FLP, Navia-Pelaez JM, Alvarez-Leite JI. Gluten worsens non-alcoholic fatty liver disease by affecting lipogenesis and fatty acid oxidation in diet-induced obese apolipoprotein E-deficient mice. Mol Cell Biochem 2024; 479:1335-1347. [PMID: 37402020 DOI: 10.1007/s11010-023-04802-3] [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: 04/23/2023] [Accepted: 06/25/2023] [Indexed: 07/05/2023]
Abstract
Obesity is closely associated with non-alcoholic fatty liver disease (NAFLD), characterized by hepatic fat accumulation and hepatocyte injury. Preclinical studies have shown exacerbated weight gain associated with an obesogenic gluten-containing diet. However, whether gluten affects obesity-induced hepatic lipid accumulation still remains unclear. We hypothesized that gluten intake could affect fatty liver development in high-fat diet (HFD)-induced obese mice. Thus, we aimed to investigate the impact of gluten intake on NAFLD in HFD-induced obese mice. Male apolipoprotein E-deficient (Apoe-/-) mice were fed with a HFD containing (GD) or not (GFD) vital wheat gluten (4.5%) for 10 weeks. Blood and liver were collected for further analysis. We found that gluten exacerbated weight gain, hepatic fat deposition, and hyperglycemia without affecting the serum lipid profile. Livers of the GD group showed a larger area of fibrosis, associated with the expression of collagen and MMP9, and higher expression of apoptosis-related factors, p53, p21, and caspase-3. The expression of lipogenic factors, such as PPARγ and Acc1, was more elevated and factors related to beta-oxidation, such as PPARα and Cpt1, were lower in the GD group compared to the GFD. Further, gluten intake induced a more significant expression of Cd36, suggesting higher uptake of free fatty acids. Finally, we found lower protein expression of PGC1α followed by lower activation of AMPK. Our data show that gluten-containing high-fat diet exacerbated NAFLD by affecting lipogenesis and fatty acid oxidation in obese Apoe-/- mice through a mechanism involving lower activation of AMPK.
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Affiliation(s)
- Edenil Costa Aguilar
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil.
- Precision Immunology Institute at the Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Weslley Fernandes-Braga
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil
- Precision Immunology Institute at the Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Elandia Aparecida Santos
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil
| | - Paola Caroline Lacerda Leocádio
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil
| | | | | | - Paula Peixoto Campos
- Department of General Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Virginia Soares Lemos
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Juliana Maria Navia-Pelaez
- Department of Pharmacology, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Department of Medicine, University of California San Diego, San Diego, USA
| | - Jacqueline I Alvarez-Leite
- Department of Biochemistry and Immunology, ICB - Federal University of Minas Gerais, Caixa Postal 486, Belo Horizonte, 30161-970, Brazil
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Duan X, Zhang L, Liao Y, Lin Z, Guo C, Luo S, Wang F, Zou Z, Zeng Z, Chen C, Qiu J. Semaglutide alleviates gut microbiota dysbiosis induced by a high-fat diet. Eur J Pharmacol 2024; 969:176440. [PMID: 38402930 DOI: 10.1016/j.ejphar.2024.176440] [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: 10/07/2023] [Revised: 02/19/2024] [Accepted: 02/19/2024] [Indexed: 02/27/2024]
Abstract
This study investigated the effects of semaglutide (Sema) on the gut microbiota of obese mice induced with high-fat diet (HFD). Male C57BL/6 J mice aged 6 weeks were enrolled and randomly distributed to four groups, which were provided with a normal control diet (NCD,NCD + Sema) and a 60% proportion of a high-fat diet (HFD,HFD + Sema), respectively. HFD was given for 10 weeks to develop an obesity model and the intervention was lasted for 18 days. The results showed semaglutide significantly reduced body weight gain, areas under the curve (AUC) of glucose tolerance test and insulin resistance test, as well as adipose tissue weight in mice. Semaglutide effectively reduced lipid deposition and lipid droplet formation in the liver of obese mice, and regulated the expression of genes related to abnormal blood glucose regulation. Additionally, semaglutide influenced the composition of gut microbiota, mitigating the microbial dysbiosis induced by a high-fat diet by impacting the diversity of the gut microbiota. After the high-fat diet intervention, certain strains such as Akkermansia, Faecalibaculum, and Allobaculum were significantly decreased, while Lachnospiraceae and Bacteroides were significantly increased. However, the application of semaglutide restored the lost flora and suppressed excessive bacterial abundance. Moreover, semaglutide increased the content of tight junction proteins and repaired the damage to intestinal barrier function caused by the high-fat diet intervention. Furthermore, correlation analysis revealed inverse relationship among Akkermansia levels and weight gain, blood glucose levels, and various obesity indicators. Correlation analysis also showed that Akkermansia level was negatively correlated with weight gain, blood glucose levels and a range of obesity indicators. This phenomenon may explain the anti-obesity effect of semaglutide, which is linked to alterations in gut microbiota, specifically an increase in the abundance of Akkermansia. In summary, our findings indicate that semaglutide has the potential to alleviate gut microbiota dysbiosis, and the gut microbiota may contribute to the obesity-related effects of this drug.
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Affiliation(s)
- Xinhao Duan
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Lei Zhang
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China; Chongqing Health Service Center, Chongqing, 400020, China
| | - Yi Liao
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Zijing Lin
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Changxin Guo
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Sen Luo
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Fu Wang
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Zhen Zou
- Molecular Biology Laboratory of Respiratory Diseases, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Zhijun Zeng
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China; Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China; Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
| | - Jingfu Qiu
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
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8
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Hoekstra M, de Jong LM, van der Geest R, de Leeuw LR, Krisnamurthi R, Geerling JJ, Van Eck M. LXR Agonist T0901317's Hepatic Impact Overrules Its Atheroprotective Action in Macrophages, Driving Early Atherogenesis in Chow-Diet-Fed Male Apolipoprotein E Knockout Mice. Biomolecules 2024; 14:429. [PMID: 38672446 PMCID: PMC11047872 DOI: 10.3390/biom14040429] [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: 02/21/2024] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/28/2024] Open
Abstract
Preclinical studies regarding the potential of liver X receptor (LXR) agonists to inhibit macrophage foam cell formation and the development of atherosclerotic lesions are generally executed in mice fed with Western-type diets enriched in cholesterol and fat. Here, we investigated whether LXR agonism remains anti-atherogenic under dietary conditions with a low basal hepatic lipogenesis rate. Hereto, atherosclerosis-susceptible male apolipoprotein E knockout mice were fed a low-fat diet with or without 10 mg/kg/day LXR agonist T0901317 supplementation for 8 weeks. Importantly, T0901317 significantly stimulated atherosclerosis susceptibility, despite an associated increase in the macrophage gene expression levels of cholesterol efflux transporters ABCA1 and ABCG1. The pro-atherogenic effect of T0901317 coincided with exacerbated hypercholesterolemia, hypertriglyceridemia, and a significant rise in hepatic triglyceride stores and macrophage numbers. Furthermore, T0901317-treated mice exhibited elevated plasma MCP-1 levels and monocytosis. In conclusion, these findings highlight that the pro-atherogenic hepatic effects of LXR agonism are dominant over the anti-atherogenic effects in macrophages in determining the overall atherosclerosis outcome under low-fat diet feeding conditions. A low-fat diet experimental setting, as compared to the commonly used high-fat-diet-based preclinical setup, thus appears more sensitive in uncovering the potential relevance of the off-target liver effects of novel anti-atherogenic therapeutic approaches that target macrophage LXR.
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Affiliation(s)
- Menno Hoekstra
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands; (L.M.d.J.); (M.V.E.)
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
- Pharmacy Leiden, Leiden, The Netherlands
| | - Laura M. de Jong
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands; (L.M.d.J.); (M.V.E.)
| | - Rick van der Geest
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands; (L.M.d.J.); (M.V.E.)
| | - Lidewij R. de Leeuw
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands; (L.M.d.J.); (M.V.E.)
| | - Rani Krisnamurthi
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands; (L.M.d.J.); (M.V.E.)
| | - Janine J. Geerling
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands; (L.M.d.J.); (M.V.E.)
| | - Miranda Van Eck
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands; (L.M.d.J.); (M.V.E.)
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
- Pharmacy Leiden, Leiden, The Netherlands
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9
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Zhu B, Wu H, Li KS, Eisa-Beygi S, Singh B, Bielenberg DR, Huang W, Chen H. Two sides of the same coin: Non-alcoholic fatty liver disease and atherosclerosis. Vascul Pharmacol 2024; 154:107249. [PMID: 38070759 DOI: 10.1016/j.vph.2023.107249] [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: 11/03/2023] [Revised: 11/20/2023] [Accepted: 11/25/2023] [Indexed: 02/03/2024]
Abstract
The prevalence of non-alcoholic fatty liver disease (NAFLD) and atherosclerosis remain high, which is primarily due to widespread adoption of a western diet and sedentary lifestyle. NAFLD, together with advanced forms of this disease such as non-alcoholic steatohepatitis (NASH) and cirrhosis, are closely associated with atherosclerotic-cardiovascular disease (ASCVD). In this review, we discussed the association between NAFLD and atherosclerosis and expounded on the common molecular biomarkers underpinning the pathogenesis of both NAFLD and atherosclerosis. Furthermore, we have summarized the mode of function and potential clinical utility of existing drugs in the context of these diseases.
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Affiliation(s)
- Bo Zhu
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, United States of America
| | - Hao Wu
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, United States of America
| | - Kathryn S Li
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, United States of America
| | - Shahram Eisa-Beygi
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, United States of America
| | - Bandana Singh
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, United States of America
| | - Diane R Bielenberg
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, United States of America
| | - Wendong Huang
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolic Research Institute, Beckman Research Institute, City of Hope National Medical Center, Duarte, CA 91010, United States of America
| | - Hong Chen
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, United States of America.
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10
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Ren Q, Sun Q, Fu J. Dysfunction of autophagy in high-fat diet-induced non-alcoholic fatty liver disease. Autophagy 2024; 20:221-241. [PMID: 37700498 PMCID: PMC10813589 DOI: 10.1080/15548627.2023.2254191] [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: 05/01/2023] [Accepted: 08/24/2023] [Indexed: 09/14/2023] Open
Abstract
ABBREVIATIONS ACOX1: acyl-CoA oxidase 1; ADH5: alcohol dehydrogenase 5 (class III), chi polypeptide; ADIPOQ: adiponectin, C1Q and collagen domain containing; ATG: autophagy related; BECN1: beclin 1; CRTC2: CREB regulated transcription coactivator 2; ER: endoplasmic reticulum; F2RL1: F2R like trypsin receptor 1; FA: fatty acid; FOXO1: forkhead box O1; GLP1R: glucagon like peptide 1 receptor; GRK2: G protein-coupled receptor kinase 2; GTPase: guanosine triphosphatase; HFD: high-fat diet; HSCs: hepatic stellate cells; HTRA2: HtrA serine peptidase 2; IRGM: immunity related GTPase M; KD: knockdown; KDM6B: lysine demethylase 6B; KO: knockout; LAMP2: lysosomal associated membrane protein 2; LAP: LC3-associated phagocytosis; LDs: lipid droplets; Li KO: liver-specific knockout; LSECs: liver sinusoidal endothelial cells; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; MAP3K5: mitogen-activated protein kinase kinase kinase 5; MED1: mediator complex subunit 1; MTOR: mechanistic target of rapamycin kinase; MTORC1: mechanistic target of rapamycin complex 1; NAFLD: non-alcoholic fatty liver disease; NASH: non-alcoholic steatohepatitis; NFE2L2: NFE2 like bZIP transcription factor 2; NOS3: nitric oxide synthase 3; NR1H3: nuclear receptor subfamily 1 group H member 3; OA: oleic acid; OE: overexpression; OSBPL8: oxysterol binding protein like 8; PA: palmitic acid; RUBCNL: rubicon like autophagy enhancer; PLIN2: perilipin 2; PLIN3: perilipin 3; PPARA: peroxisome proliferator activated receptor alpha; PRKAA2/AMPK: protein kinase AMP-activated catalytic subunit alpha 2; RAB: member RAS oncogene family; RPTOR: regulatory associated protein of MTOR complex 1; SCD: stearoyl-CoA desaturase; SIRT1: sirtuin 1; SIRT3: sirtuin 3; SNARE: soluble N-ethylmaleimide-sensitive factor attachment protein receptor; SQSTM1/p62: sequestosome 1; SREBF1: sterol regulatory element binding transcription factor 1;SREBF2: sterol regulatory element binding transcription factor 2; STING1: stimulator of interferon response cGAMP interactor 1; STX17: syntaxin 17; TAGs: triacylglycerols; TFEB: transcription factor EB; TP53/p53: tumor protein p53; ULK1: unc-51 like autophagy activating kinase 1; VMP1: vacuole membrane protein 1.
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Affiliation(s)
- Qiannan Ren
- Department of Endocrinology, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
| | - Qiming Sun
- International Institutes of Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang, China
- Department of Biochemistry, and Department of Cardiology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Junfen Fu
- Department of Endocrinology, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China
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11
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Almeida FC, Patra K, Giannisis A, Niesnerova A, Nandakumar R, Ellis E, Oliveira TG, Nielsen HM. APOE genotype dictates lipidomic signatures in primary human hepatocytes. J Lipid Res 2024; 65:100498. [PMID: 38216055 PMCID: PMC10875595 DOI: 10.1016/j.jlr.2024.100498] [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: 10/17/2023] [Revised: 12/27/2023] [Accepted: 01/09/2024] [Indexed: 01/14/2024] Open
Abstract
Apolipoprotein E (APOE) genetic variants are most notably known for their divergent impact on the risk of developing Alzheimer's disease. While APOE genotype has been consistently shown to modulate lipid metabolism in a variety of cellular contexts, the effect of APOE alleles on the lipidome in hepatocytes is unknown. In this study, we investigated the contribution of APOE alleles to lipidomic profiles of donor-derived primary human hepatocytes from 77 subjects. Lipidomic data obtained by liquid chromatography-mass spectrometry were analyzed across ε2/ε3, ε3/ε3, and ε3/ε4 genotypes to reveal how APOE modulates lipid relative levels over age and between groups. Hepatic APOE concentration, measured by ELISA, was assessed for correlation with lipid abundance in subjects grouped as per APOE genotype and sex. APOE genotype-specific differential lipidomic signatures associated with age for multiple lipid classes but did not differ between sexes. Compared to ε2/ε3, ε3/ε4 hepatocytes had higher abundance of acylcarnitines (AC) and acylphosphatidylglycerol (AcylPG) as a class, as well as higher medium and long-chain ACs, AcylPG, phosphatidylglycerol (PG), bis(monoacylglycerol)phosphate (BMP), monoacylglycerol (MG) and diacylglycerol (DG) species. The ε3/ε4 hepatocytes also exhibited a higher abundance of medium and long-chain ACs compared to the ε3/ε3 hepatocytes. Only in the ε3/ε4 hepatocytes, APOE concentration was lower and showed a negative correlation with BMP levels, specifically in females. APOE genotype dictates a differential lipidome in primary human hepatocytes. The lipids involved suggest mitochondrial dysfunction with accompanying alterations in neutral lipid storage, reflective of a general disturbance of free fatty acid metabolism in human hepatocytes with the ε4 allele.
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Affiliation(s)
- Francisco C Almeida
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; Department of Neuroradiology, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Kalicharan Patra
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Andreas Giannisis
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Anezka Niesnerova
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Renu Nandakumar
- Irving Institute for Clinical and Translational Research, Columbia University Irving Medical Center, New York, USA
| | - Ewa Ellis
- Department of Clinical Science, Intervention and Technology, (CLINTEC), Division of Transplantation surgery, Karolinska Institutet and ME Transplantation, Karolinska University Hospital, Huddinge, Sweden
| | - Tiago Gil Oliveira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; Department of Neuroradiology, Hospital de Braga, Braga, Portugal.
| | - Henrietta M Nielsen
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden.
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12
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Motta G, Thangaraj SV, Padmanabhan V. Developmental Programming: Impact of Prenatal Exposure to Bisphenol A on Senescence and Circadian Mediators in the Liver of Sheep. TOXICS 2023; 12:15. [PMID: 38250971 PMCID: PMC10818936 DOI: 10.3390/toxics12010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/18/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024]
Abstract
Prenatal exposure to endocrine disruptors such as bisphenol A (BPA) plays a critical role in the developmental programming of liver dysfunction that is characteristic of nonalcoholic fatty liver disease (NAFLD). Circadian and aging processes have been implicated in the pathogenesis of NAFLD. We hypothesized that the prenatal BPA-induced fatty-liver phenotype of female sheep is associated with premature hepatic senescence and disruption in circadian clock genes. The expression of circadian rhythm and aging-associated genes, along with other markers of senescence such as telomere length, mitochondrial DNA copy number, and lipofuscin accumulation, were evaluated in the liver tissue of control and prenatal BPA groups. Prenatal BPA exposure significantly elevated the expression of aging-associated genes GLB1 and CISD2 and induced large magnitude differences in the expression of other aging genes-APOE, HGF, KLOTHO, and the clock genes PER2 and CLOCK-in the liver; the other senescence markers remained unaffected. Prenatal BPA-programmed aging-related transcriptional changes in the liver may contribute to pathological changes in liver function, elucidating the involvement of aging genes in the pathogenesis of liver steatosis.
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Affiliation(s)
| | | | - Vasantha Padmanabhan
- Department of Pediatrics, University of Michigan, Ann Arbor, MI 48105, USA; (G.M.); (S.V.T.)
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13
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Ramalingam V. NLRP3 inhibitors: Unleashing their therapeutic potential against inflammatory diseases. Biochem Pharmacol 2023; 218:115915. [PMID: 37949323 DOI: 10.1016/j.bcp.2023.115915] [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: 07/23/2023] [Revised: 11/04/2023] [Accepted: 11/07/2023] [Indexed: 11/12/2023]
Abstract
The NOD-like receptor pyrin domain-containing protein 3 (NLRP3) inflammasome has been linked to the release of pro-inflammatory cytokines and is essential for innate defence against infection and danger signals. These secreted cytokines improve the inflammatory response caused by tissue damage and associated inflammation. Consequently, the development of NLRP3 inflammasome inhibitors are viable option for the treatment of diverse inflammatory disorders. The significant anti-inflammatory effects of the NLRP3 inhibitors have severe side effects. Hence, the application of NLRP3 inhibitors against inflammatory disease has not yet been understood and most of the developed inhibitors are unsuccessful in clinical trials. The processes behind the NLRP3 complex, priming, and activation are the main emphasis of this review, which also covers therapeutical inhibitors of the NLRP3 inflammasome and potential therapeutic strategies for directing the NLRP3 inflammasome towards clinical development.
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Affiliation(s)
- Vaikundamoorthy Ramalingam
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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14
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Zhang C, Zhang D, Huang H, Lu X, Shi H, Liu K, Guo X, Zhang R, Wang H. Cathepsin D mediates prenatal caffeine exposure-caused NAFLD susceptibility in male rat offspring by regulating autophagy. Free Radic Biol Med 2023; 208:684-699. [PMID: 37743032 DOI: 10.1016/j.freeradbiomed.2023.09.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 09/16/2023] [Accepted: 09/22/2023] [Indexed: 09/26/2023]
Abstract
Epidemiological evidence has revealed that non-alcoholic fatty liver disease (NAFLD) harbors an intrauterine origin. Autophagy is known to be involved in the protective mechanism in the development of adult NAFLD, but whether it engages in the occurrence of fetal-originated NAFLD remains unclear. In this study, a rat model of fetal-originated NAFLD was established by giving a high-fat diet or chronic stress after birth on prenatal caffeine exposure (PCE) male offspring. The alterations of liver morphologic analysis, lipid metabolism, and autophagy before and after birth were determined to confirm autophagy mechanism, NAFLD susceptibility, and intrauterine origin in PCE male adult offspring. Our results revealed that PCE-induced intrauterine high concentration of corticosterone exposure blocked autophagic flux by inhibiting cathepsin D expression in hepatocytes, leading to β-oxidation inhibition and lipid accumulation in the liver. Moreover, high concentration of corticosterone upregulated miR-665 by activating the glucocorticoid receptor to suppress cathepsin D, thus causing lysosomal degradation dysfunction and autophagy flux blockade. Notably, hepatic overexpression of cathepsin D could reverse PCE-induced postnatal NAFLD susceptibility in male rat offspring. This study elucidates the epigenetic programming mechanism of intrauterine autophagy-related fetal-originated NAFLD susceptibility, and identifies cathepsin D as its early intervention target, providing an experimental basis for exploring early prevention and treatment strategies for fetal-originated NAFLD.
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Affiliation(s)
- Cong Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Dingmei Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Hegui Huang
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China; Wuhan No.1 Hospital, Wuhan, 430022, China
| | - Xiaoqian Lu
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Huasong Shi
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Kexin Liu
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Xiaoling Guo
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Rui Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Hui Wang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China.
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15
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Huang G, Wallace DF, Powell EE, Rahman T, Clark PJ, Subramaniam VN. Gene Variants Implicated in Steatotic Liver Disease: Opportunities for Diagnostics and Therapeutics. Biomedicines 2023; 11:2809. [PMID: 37893185 PMCID: PMC10604560 DOI: 10.3390/biomedicines11102809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/05/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) describes a steatotic (or fatty) liver occurring as a consequence of a combination of metabolic, environmental, and genetic factors, in the absence of significant alcohol consumption and other liver diseases. NAFLD is a spectrum of conditions. Steatosis in the absence of inflammation is relatively benign, but the disease can progress into more severe forms like non-alcoholic steatohepatitis (NASH), liver cirrhosis, and hepatocellular carcinoma. NAFLD onset and progression are complex, as it is affected by many risk factors. The interaction between genetic predisposition and other factors partially explains the large variability of NAFLD phenotype and natural history. Numerous genes and variants have been identified through large-scale genome-wide association studies (GWAS) that are associated with NAFLD and one or more subtypes of the disease. Among them, the largest effect size and most consistent association have been patatin-like phospholipase domain-containing protein 3 (PNPLA3), transmembrane 6 superfamily member 2 (TM6SF2), and membrane-bound O-acyltransferase domain containing 7 (MBOAT7) genes. Extensive in vitro and in vivo studies have been conducted on these variants to validate these associations. The focus of this review is to highlight the genetics underpinning the molecular mechanisms driving the onset and progression of NAFLD and how they could potentially be used to improve genetic-based diagnostic testing of the disease and develop personalized, targeted therapeutics.
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Affiliation(s)
- Gary Huang
- Hepatogenomics Research Group, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia;
- Centre for Genomics and Personalised Health, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia;
- School of Biomedical Sciences, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia
| | - Daniel F. Wallace
- Centre for Genomics and Personalised Health, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia;
- School of Biomedical Sciences, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia
- Metallogenomics Laboratory, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia
| | - Elizabeth E. Powell
- QIMR Berghofer Medical Research Institute, Brisbane, QLD 4006, Australia;
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane, QLD 4102, Australia
- Centre for Liver Disease Research, Translational Research Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4101, Australia
| | - Tony Rahman
- Department of Gastroenterology and Hepatology, Prince Charles Hospital, Brisbane, QLD 4032, Australia;
| | - Paul J. Clark
- Mater Adult Hospital, Faculty of Medicine, The University of Queensland, Brisbane, QLD 4101, Australia;
| | - V. Nathan Subramaniam
- Hepatogenomics Research Group, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia;
- Centre for Genomics and Personalised Health, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia;
- School of Biomedical Sciences, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia
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16
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Basha A, May SC, Anderson RM, Samala N, Mirmira RG. Non-Alcoholic Fatty Liver Disease: Translating Disease Mechanisms into Therapeutics Using Animal Models. Int J Mol Sci 2023; 24:9996. [PMID: 37373143 PMCID: PMC10298283 DOI: 10.3390/ijms24129996] [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: 05/17/2023] [Revised: 06/06/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a range of pathologies arising from fat accumulation in the liver in the absence of excess alcohol use or other causes of liver disease. Its complications include cirrhosis and liver failure, hepatocellular carcinoma, and eventual death. NAFLD is the most common cause of liver disease globally and is estimated to affect nearly one-third of individuals in the United States. Despite knowledge that the incidence and prevalence of NAFLD are increasing, the pathophysiology of the disease and its progression to cirrhosis remain insufficiently understood. The molecular pathogenesis of NAFLD involves insulin resistance, inflammation, oxidative stress, and endoplasmic reticulum stress. Better insight into these molecular pathways would allow for therapies that target specific stages of NAFLD. Preclinical animal models have aided in defining these mechanisms and have served as platforms for screening and testing of potential therapeutic approaches. In this review, we will discuss the cellular and molecular mechanisms thought to contribute to NAFLD, with a focus on the role of animal models in elucidating these mechanisms and in developing therapies.
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Affiliation(s)
- Amina Basha
- Kovler Diabetes Center, Section of Adult and Pediatric Endocrinology, Diabetes and Metabolism, Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
| | - Sarah C. May
- Kovler Diabetes Center, Section of Adult and Pediatric Endocrinology, Diabetes and Metabolism, Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
| | - Ryan M. Anderson
- Kovler Diabetes Center, Section of Adult and Pediatric Endocrinology, Diabetes and Metabolism, Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
| | - Niharika Samala
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Raghavendra G. Mirmira
- Kovler Diabetes Center, Section of Adult and Pediatric Endocrinology, Diabetes and Metabolism, Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
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17
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Gautam J, Kumari D, Aggarwal H, Gupta SK, Kasarla SS, Sarkar S, Priya MRK, Kamboj P, Kumar Y, Dikshit M. Characterization of lipid signatures in the plasma and insulin-sensitive tissues of the C57BL/6J mice fed on obesogenic diets. Biochim Biophys Acta Mol Cell Biol Lipids 2023:159348. [PMID: 37285928 DOI: 10.1016/j.bbalip.2023.159348] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 05/23/2023] [Accepted: 05/29/2023] [Indexed: 06/09/2023]
Abstract
Diet-induced obesity mouse models are widely utilized to investigate the underlying mechanisms of dyslipidemia, glucose intolerance, insulin resistance, hepatic steatosis, and type 2 diabetes mellitus (T2DM), as well as for screening potential drug compounds. However, there is limited knowledge regarding specific signature lipids that accurately reflect dietary disorders. In this study, we aimed to identify key lipid signatures using LC/MS-based untargeted lipidomics in the plasma, liver, adipose tissue (AT), and skeletal muscle tissues (SKM) of male C57BL/6J mice that were fed chow, LFD, or obesogenic diets (HFD, HFHF, and HFCD) for a duration of 20 weeks. Furthermore, we conducted a comprehensive lipid analysis to assess similarities and differences with human lipid profiles. The mice fed obesogenic diets exhibited weight gain, glucose intolerance, elevated BMI, glucose and insulin levels, and a fatty liver, resembling characteristics of T2DM and obesity in humans. In total, we identified approximately 368 lipids in plasma, 433 in the liver, 493 in AT, and 624 in SKM. Glycerolipids displayed distinct patterns across the tissues, differing from human findings. However, changes in sphingolipids, phospholipids, and the expression of inflammatory and fibrotic genes showed similarities to reported human findings. Significantly modulated pathways in the obesogenic diet-fed groups included ceramide de novo synthesis, sphingolipid remodeling, and the carboxylesterase pathway, while lipoprotein-mediated pathways were minimally affected.
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Affiliation(s)
- Jyoti Gautam
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India
| | - Deepika Kumari
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India
| | - Hobby Aggarwal
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India
| | - Sonu Kumar Gupta
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India
| | - Siva Swapna Kasarla
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India
| | - Soumalya Sarkar
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India
| | - M R Kamla Priya
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India
| | - Parul Kamboj
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India
| | - Yashwant Kumar
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India.
| | - Madhu Dikshit
- Non-communicable Disease Centre, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, 3rd Milestone, Faridabad 121001, Haryana, India.
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18
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Gao C, Zhang H, Nie L, He K, Li P, Wang X, Zhang Z, Xie Y, Li S, Liu G, Huang X, Deng H, Liu J, Yang X. Chrysin prevents inflammation-coinciding liver steatosis via AMPK signalling. J Pharm Pharmacol 2023:7160335. [PMID: 37167529 DOI: 10.1093/jpp/rgad041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 04/21/2023] [Indexed: 05/13/2023]
Abstract
OBJECTIVES We aimed to elucidate the therapeutic potential of Chrysin (CN) against the high-fat diet (HFD) induced non-alcoholic fatty liver disease (NAFLD) and its mechanism. METHODS To assess the hypothesis, NAFLD was induced in C57BL/6 mice by feeding a high-fat diet for up to two months, followed by CN administration (for three months). Liver injury/toxicity, lipid deposition, inflammation and fibrosis were detected via molecular and biochemical analysis, including blood chemistry, immunoimaging and immunoblotting. Moreover, we performed proteomic analysis to illuminate Chrysin's therapeutic effects further. KEY FINDINGS CN treatment significantly reduced liver-fat accumulation and inflammation, ultimately improving obesity and liver injury in NAFLD mice. Proteomic analysis showed that CN modified the protein expression profiles in the liver, particularly improving the expression of proteins related to energy, metabolism and inflammation. Mechanistically, CN treatment increased AMP-activated protein and phosphorylated CoA (P-ACC). Concurrently, it reduced inflammation and inflammation activation by inhibiting NLRP3 expression. CONCLUSIONS In summary, CN treatment reduced lipid metabolism by AMPK and inflammasome activation by NLRP3 inhibition, ultimately improving NAFLD progression. These findings suggest that CN could be a potential treatment candidate for the NFLAD condition.
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Affiliation(s)
- Chuanyue Gao
- School of Public Health, Shanxi Medical University, Taiyuan, China
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Huan Zhang
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China
- School of Public Health, University of South China, Hunan Hengyang, China
| | - Lulin Nie
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China
- Institute of New Drug Research and Guangzhou, Key Laboratory of Innovative Chemical Drug Research in Cardio-cerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou, 510632, China
| | - Kaiwu He
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Peimao Li
- Medical Laboratory, Shenzhen Prevention and Treatment Center for Occupational Diseases, Luohu District, Shenzhen, China
| | - Xingxing Wang
- School of Public Health, Shanxi Medical University, Taiyuan, China
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Zaijun Zhang
- Jinan Univ Coll Pharm Inst New Drug Res & Guangzhou Key Lab Innovat Chem Drug Res Cardio Cerebrovasc, Guangzhou, China
| | - Yongmei Xie
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu, China
| | - Shupeng Li
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Gongping Liu
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinfeng Huang
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Huiping Deng
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Jianjun Liu
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Xifei Yang
- School of Public Health, Shanxi Medical University, Taiyuan, China
- Shenzhen Key Laboratory of Modern Toxicology, Shenzhen Medical Key Discipline of Health Toxicology (2020-2024), Shenzhen Center for Disease Control and Prevention, Shenzhen, China
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Chen L, Kang X, Meng X, Huang L, Du Y, Zeng Y, Liao C. MALAT1-mediated EZH2 Recruitment to the GFER Promoter Region Curbs Normal Hepatocyte Proliferation in Acute Liver Injury. J Clin Transl Hepatol 2023; 11:97-109. [PMID: 36406327 PMCID: PMC9647095 DOI: 10.14218/jcth.2021.00391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/12/2021] [Accepted: 03/04/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND AND AIMS The goal of this study was to investigate the mechanism by which the long noncoding RNA MALAT1 inhibited hepatocyte proliferation in acute liver injury (ALI). METHODS Lipopolysaccharide (LPS) was used to induce an ALI cellular model in HL7702 cells, in which lentivirus vectors containing MALAT1/EZH2/GFER overexpression or knockdown were introduced. A series of experiments were performed to determine their roles in liver injury, oxidative stress injury, and cell biological processes. The interaction of MALAT1 with EZH2 and enrichment of EZH2 and H3K27me3 in the GFER promoter region were identified. Rats were treated with MALAT1 knockdown or GFER overexpression before LPS induction to verify the results derived from the in vitro assay. RESULTS MALAT1 levels were elevated and GFER levels were reduced in ALI patients and the LPS-induced cell model. MALAT1 knockdown or GFER overexpression suppressed cell apoptosis and oxidative stress injury induced cell proliferation, and reduced ALI. Functionally, MALAT1 interacted directly with EZH2 and increased the enrichment of EZH2 and H3K27me3 in the GFER promoter region to reduce GFER expression. Moreover, MALAT1/EZH2/GFER was activated the AMPK/mTOR signaling pathway. CONCLUSION Our study highlighted the inhibitory role of reduced MALAT1 in ALI through the modulation of EZH2-mediated GFER.
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Affiliation(s)
- Li Chen
- Department of Infectious Diseases, The Third Xiangya Hospital of Central South University, Changsha, Hunan, China
- Correspondence to: Li Chen, Department of Infectious Diseases, The Third Xiangya Hospital of Central South University, No.138, Tongzipo Road, Yuelu District, Changsha, Hunan 410013, China. ORCID: https://orcid.org/0000-0003-2385-2858. Tel: +86-13755192409, E-mail:
| | - Xintong Kang
- Department of Hepatology, Public Health Clinical Center of Chengdu, Chengdu, Sichuan, China
| | - Xiujuan Meng
- Hospital-Acquired Infection Control Center, Xiangya Hospital Central South University, Changsha, Hunan, China
| | - Liang Huang
- Department of Hepatology, Public Health Clinical Center of Chengdu, Chengdu, Sichuan, China
| | - Yiting Du
- Department of Emergency, Chengdu Women’s and Children’s Central Hospital, Chengdu, Sichuan, China
| | - Yilan Zeng
- Department of Hepatology, Public Health Clinical Center of Chengdu, Chengdu, Sichuan, China
| | - Chunfeng Liao
- Department of Cardiovascular Medicine, The First Hospital of Changsha, Changsha, Hunan, China
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20
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Mérian J, Ghezali L, Trenteseaux C, Duparc T, Beuzelin D, Bouguetoch V, Combes G, Sioufi N, Martinez LO, Najib S. Intermittent Fasting Resolves Dyslipidemia and Atherogenesis in Apolipoprotein E-Deficient Mice in a Diet-Dependent Manner, Irrespective of Sex. Cells 2023; 12:cells12040533. [PMID: 36831200 PMCID: PMC9953823 DOI: 10.3390/cells12040533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/30/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023] Open
Abstract
In humans and animal models, intermittent fasting (IF) interventions promote body weight loss, improve metabolic health, and are thought to lower cardiovascular disease risk. However, there is a paucity of reports on the relevance of such nutritional interventions in the context of dyslipidemia and atherosclerotic cardiovascular diseases. The present study assessed the metabolic and atheroprotective effects of intermittent fasting intervention (IF) in atherosclerosis-prone apolipoprotein E-deficient (Apoe-/-) mice. Groups of male and female Apoe-/- mice were fed a regular (chow) or atherogenic (high-fat, high-cholesterol, HFCD) diet for 4 months, either ad libitum or in an alternate-day fasting manner. The results show that IF intervention improved glucose and lipid metabolism independently of sex. However, IF only decreased body weight gain in males fed chow diet and differentially modulated adipose tissue parameters and liver steatosis in a diet composition-dependent manner. Finally, IF prevented spontaneous aortic atherosclerotic lesion formation in mice fed chow diet, irrespective of sex, but failed to reduce HFCD-diet-induced atherosclerosis. Overall, the current work indicates that IF interventions can efficiently improve glucose homeostasis and treat atherogenic dyslipidemia, but a degree of caution is warranted with regard to the individual sex and the composition of the dietary regimen.
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Affiliation(s)
- Jules Mérian
- Institut des Maladies Métaboliques et Cardiovasculaires, I2MC, Université de Toulouse, Inserm, Université Toulouse III—Paul Sabatier (UPS), UMR1297, 31432 Toulouse, France
| | - Lamia Ghezali
- Institut des Maladies Métaboliques et Cardiovasculaires, I2MC, Université de Toulouse, Inserm, Université Toulouse III—Paul Sabatier (UPS), UMR1297, 31432 Toulouse, France
- Lifesearch SAS, 195 Route d’Espagne, 31100 Toulouse, France
| | - Charlotte Trenteseaux
- Institut des Maladies Métaboliques et Cardiovasculaires, I2MC, Université de Toulouse, Inserm, Université Toulouse III—Paul Sabatier (UPS), UMR1297, 31432 Toulouse, France
- Lifesearch SAS, 195 Route d’Espagne, 31100 Toulouse, France
| | - Thibaut Duparc
- Institut des Maladies Métaboliques et Cardiovasculaires, I2MC, Université de Toulouse, Inserm, Université Toulouse III—Paul Sabatier (UPS), UMR1297, 31432 Toulouse, France
| | - Diane Beuzelin
- Institut des Maladies Métaboliques et Cardiovasculaires, I2MC, Université de Toulouse, Inserm, Université Toulouse III—Paul Sabatier (UPS), UMR1297, 31432 Toulouse, France
- Lifesearch SAS, 195 Route d’Espagne, 31100 Toulouse, France
| | - Vanessa Bouguetoch
- Institut des Maladies Métaboliques et Cardiovasculaires, I2MC, Université de Toulouse, Inserm, Université Toulouse III—Paul Sabatier (UPS), UMR1297, 31432 Toulouse, France
- Lifesearch SAS, 195 Route d’Espagne, 31100 Toulouse, France
| | - Guillaume Combes
- Institut des Maladies Métaboliques et Cardiovasculaires, I2MC, Université de Toulouse, Inserm, Université Toulouse III—Paul Sabatier (UPS), UMR1297, 31432 Toulouse, France
| | - Nabil Sioufi
- Lifesearch SAS, 195 Route d’Espagne, 31100 Toulouse, France
| | - Laurent O. Martinez
- Institut des Maladies Métaboliques et Cardiovasculaires, I2MC, Université de Toulouse, Inserm, Université Toulouse III—Paul Sabatier (UPS), UMR1297, 31432 Toulouse, France
| | - Souad Najib
- Institut des Maladies Métaboliques et Cardiovasculaires, I2MC, Université de Toulouse, Inserm, Université Toulouse III—Paul Sabatier (UPS), UMR1297, 31432 Toulouse, France
- Correspondence: ; Tel.: +33-531-224-082
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21
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Finney AC, Das S, Kumar D, McKinney MP, Cai B, Yurdagul A, Rom O. The interplay between nonalcoholic fatty liver disease and atherosclerotic cardiovascular disease. Front Cardiovasc Med 2023; 10:1116861. [PMID: 37200978 PMCID: PMC10185914 DOI: 10.3389/fcvm.2023.1116861] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/23/2023] [Indexed: 05/20/2023] Open
Abstract
Therapeutic approaches that lower circulating low-density lipoprotein (LDL)-cholesterol significantly reduced the burden of cardiovascular disease over the last decades. However, the persistent rise in the obesity epidemic is beginning to reverse this decline. Alongside obesity, the incidence of nonalcoholic fatty liver disease (NAFLD) has substantially increased in the last three decades. Currently, approximately one third of world population is affected by NAFLD. Notably, the presence of NAFLD and particularly its more severe form, nonalcoholic steatohepatitis (NASH), serves as an independent risk factor for atherosclerotic cardiovascular disease (ASCVD), thus, raising interest in the relationship between these two diseases. Importantly, ASCVD is the major cause of death in patients with NASH independent of traditional risk factors. Nevertheless, the pathophysiology linking NAFLD/NASH with ASCVD remains poorly understood. While dyslipidemia is a common risk factor underlying both diseases, therapies that lower circulating LDL-cholesterol are largely ineffective against NASH. While there are no approved pharmacological therapies for NASH, some of the most advanced drug candidates exacerbate atherogenic dyslipidemia, raising concerns regarding their adverse cardiovascular consequences. In this review, we address current gaps in our understanding of the mechanisms linking NAFLD/NASH and ASCVD, explore strategies to simultaneously model these diseases, evaluate emerging biomarkers that may be useful to diagnose the presence of both diseases, and discuss investigational approaches and ongoing clinical trials that potentially target both diseases.
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Affiliation(s)
- Alexandra C. Finney
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Shreveport, Shreveport, LA, United States
| | - Sandeep Das
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Shreveport, Shreveport, LA, United States
| | - Dhananjay Kumar
- Department of Molecular and Cellular Physiology, Louisiana State University Health Shreveport, Shreveport, LA, United States
| | - M. Peyton McKinney
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Shreveport, Shreveport, LA, United States
| | - Bishuang Cai
- Division of Liver Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, NY, United States
| | - Arif Yurdagul
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Shreveport, Shreveport, LA, United States
- Department of Molecular and Cellular Physiology, Louisiana State University Health Shreveport, Shreveport, LA, United States
- Correspondence: Arif Yurdagul Oren Rom
| | - Oren Rom
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Shreveport, Shreveport, LA, United States
- Department of Molecular and Cellular Physiology, Louisiana State University Health Shreveport, Shreveport, LA, United States
- Correspondence: Arif Yurdagul Oren Rom
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22
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Gallic acid ameliorates atherosclerosis and vascular senescence and remodels the microbiome in a sex-dependent manner in ApoE -/- mice. J Nutr Biochem 2022; 110:109132. [PMID: 36028099 DOI: 10.1016/j.jnutbio.2022.109132] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 07/24/2022] [Accepted: 08/01/2022] [Indexed: 01/13/2023]
Abstract
Polyphenols found in fruits and vegetables are associated with a reduced incidence of cardiovascular disease (CVD), the leading cause of death in the USA. Our lab demonstrated that blackberry supplementation reduces atherosclerosis in male, but not in female mice. The current study investigates whether gallic acid (GA), a polyphenol abundant in blackberry, decreases plaque and whether its effect is also sex-dependent. In vitro work using vascular smooth muscle cells (VSMCs) demonstrated that GA reduced cell signaling associated with proliferation, migration, and senescence. ApoE-/- male and female mice were treated with and without 0.2% GA in drinking water and fed a chow diet (2 weeks), then switched to high-fat diet (HFD) (5 weeks) with the same GA regimen. Similar to the blackberry study, GA reduced atherosclerosis only in males. This GA-induced plaque reduction was independent of plasma cholesterol, triglycerides (TG), LDL, or HDL but corresponded with indices of lower inflammation. Males showed reduced spleen weight and serum IL3 and IL12 levels, and gut health improvement. In females, GA increased anti-atherogenic (HDL and IL10) molecules, while upregulating several pro-inflammatory cytokines and chemokines, including tumor necrosis factor α (TNFα). A major sex-dependent effect of GA was the almost complete disappearance of Eubacterium fissicatena and Turicibacter induced by HFD in males, a finding not seen in females. This study provides novel insights into how GA can improve gut microbiota alterations associated with CVD and suggests that males suffering from atherosclerosis may benefit from GA supplementation, as this polyphenol partially restored microbiome dysbiosis.
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23
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Polyphenol-Rich Liupao Tea Extract Prevents High-Fat Diet-Induced MAFLD by Modulating the Gut Microbiota. Nutrients 2022; 14:nu14224930. [PMID: 36432617 PMCID: PMC9697786 DOI: 10.3390/nu14224930] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022] Open
Abstract
The modulation of gut microbiota dysbiosis might regulate the progression of metabolic-associated fatty liver disease (MAFLD). Here, we found that polyphenol-rich Liupao tea extract (PLE) prevents high-fat diet (HFD)-induced MAFLD in ApoE-/- male mice accompanied by protection of the intestinal barrier and downregulation of lipopolysaccharide (LPS)-related Toll-like receptor 4 (TLR4)-myeloid differentiation primary response 88 (MyD88) signaling in the liver. Fecal microbiome transplantation (FMT) from PLE-and-HFD-treated mice delayed MAFLD development significantly compared with FMT from HFD-treated mice. In this case, 16S rRNA gene sequencing revealed that Rikenellaceae and Odoribacter were significantly enriched and that Helicobacter was significantly decreased in not only the HFD+PLE group but also the HFD+PLE-FMT group. Furthermore, the level of 3-sulfodeoxycholic acid was significantly decreased in the HFD+PLE-FMT group compared with the HFD-FMT group. In conclusion, our data demonstrate that PLE could modulate the MAFLD phenotype in mice and that this effect is partly mediated through modulation of the gut microbiota.
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24
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Qin ZL, Yao QF, Ren H, Zhao P, Qi ZT. Lipid Droplets and Their Participation in Zika Virus Infection. Int J Mol Sci 2022; 23:ijms232012584. [PMID: 36293437 PMCID: PMC9604050 DOI: 10.3390/ijms232012584] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 11/23/2022] Open
Abstract
Lipid droplets (LDs) are highly conserved and dynamic intracellular organelles. Their functions are not limited to serving as neutral lipid reservoirs; they also participate in non-energy storage functions, such as cell lipid metabolism, protection from cell stresses, maintaining protein homeostasis, and regulating nuclear function. During a Zika virus (ZIKV) infection, the viruses hijack the LDs to provide energy and lipid sources for viral replication. The co-localization of ZIKV capsid (C) protein with LDs supports its role as a virus replication platform and a key compartment for promoting the generation of progeny virus particles. However, in view of the multiple functions of LDs, their role in ZIKV infection needs further elucidation. Here, we review the basic mechanism of LD biogenesis and biological functions and discuss how ZIKV infection utilizes these effects of LDs to facilitate virus replication, along with the future application strategy of developing new antiviral drugs based on the interaction of ZIKV with LDs.
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25
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Luo S, Zhou L, Jiang X, Xia Y, Huang L, Ling R, Tang S, Zou Z, Chen C, Qiu J. Asparagus cochinchinensis alleviates disturbances of lipid metabolism and gut microbiota in high-fat diet-induced obesity mice. Front Pharmacol 2022; 13:1015005. [PMID: 36313282 PMCID: PMC9616603 DOI: 10.3389/fphar.2022.1015005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/23/2022] [Indexed: 11/17/2022] Open
Abstract
Asparagus cochinchinensis is a valuable traditional Chinese medicine that has anti-inflammatory ability and effectively regulates the dysbiosis within the body. Obesity is usually characterized by chronic low-grade inflammation with aberrant gut microbiota. However, the role of Asparagus cochinchinensis against obesity remains unknown. Therefore, a high-fat diet (HFD)-induced obese mouse model with or without aqueous extract from Asparagus cochinchinensis root (ACE) treatment was established herein to determine whether ACE alleviated obesity and its involved mechanisms. Our results showed that ACE administration significantly decreased the weight gain and relieved dyslipidemia induced by HFD Treatment of ACE also improved glucose tolerance and insulin resistance in obese animal model, and remarkably decreased inflammation and lipogenesis in the liver and adipose. Moreover, administration of ACE significantly reshaped the gut microbiota of obese mice. These findings together suggest that ACE has beneficial effect against HFD-induced obesity and will provide valuable insights for the therapeutic potential of ACE against obesity and may aid in strategy-making for weight loss.
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Affiliation(s)
- Shiyue Luo
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Lixiao Zhou
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, China
- Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Yinyin Xia
- Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, China
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Lishuang Huang
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Run Ling
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Shixin Tang
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Zhen Zou
- Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, China
- Molecular Biology Laboratory of Respiratory Diseases, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
- *Correspondence: Zhen Zou, ; Chengzhi Chen, ; Jingfu Qiu,
| | - Chengzhi Chen
- Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, China
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, China
- *Correspondence: Zhen Zou, ; Chengzhi Chen, ; Jingfu Qiu,
| | - Jingfu Qiu
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, China
- Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, China
- *Correspondence: Zhen Zou, ; Chengzhi Chen, ; Jingfu Qiu,
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26
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Western Diet-Fed ApoE Knockout Male Mice as an Experimental Model of Non-Alcoholic Steatohepatitis. Curr Issues Mol Biol 2022; 44:4692-4703. [PMID: 36286035 PMCID: PMC9600038 DOI: 10.3390/cimb44100320] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/05/2022] [Accepted: 10/06/2022] [Indexed: 11/23/2022] Open
Abstract
One of the consequences of the Western lifestyle and high-fat diet is non-alcoholic fatty liver disease (NAFLD) and its aggressive form, non-alcoholic steatohepatitis (NASH), which can progress to cirrhosis and hepatocellular carcinoma (HCC) and is rapidly becoming the leading cause of end-stage liver disease or liver transplantation. Currently, rodent NASH models lack significant aspects of the full NASH spectrum, representing a major problem for NASH research. Therefore, this work aimed to characterize a fast rodent model with all characteristic features of NASH. Eight-week-old male ApoE KO mice were fed with Western diet (WD), high fatty diet (HFD) or normal chow (Chow) for 7 weeks. Whole-body fat was increased by ~2 times in WD mice and HFD mice and was associated with increased glucose intolerance, hepatic triglycerides, and plasma ALT and plasma AST compared with Chow mice. WD mice also showed increased galectin-3 expression compared with Chow or HFD mice and increased plasma cholesterol compared with Chow mice. WD and HFD displayed increased hepatic fibrosis and increased F4/80 expression. WD mice also displayed increased levels of plasma MCP-1. Hepatic inflammatory markers were evaluated, and WD mice showed increased levels of TNF-α, MCP-1, IL-6 and IFN-γ. Taken together, these data demonstrated that the ApoE KO mouse fed with WD is a great model for NASH research, once it presents the fundamental parameters of the disease, including hepatic steatosis, fibrosis, inflammation, and metabolic syndrome.
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27
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Cheng F, Dun Y, Cheng J, Ripley-Gonzalez JW, Jiang W, You B, Liu S. Exercise activates autophagy and regulates endoplasmic reticulum stress in muscle of high-fat diet mice to alleviate insulin resistance. Biochem Biophys Res Commun 2022; 601:45-51. [PMID: 35228120 DOI: 10.1016/j.bbrc.2022.02.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/28/2022]
Abstract
Exercise training has been demonstrated as an effective therapy for insulin resistance (IR) to relieve skeletal muscle metabolic disorders. Physiologic protective autophagy was found blocked by IR induced severe endoplasmic reticulum (ER) stress, which may lead to progression of IR. However, the mechanisms are not fully understood. Therefore, this study sought to investigate that how exercise training act on IR through an exploration into the mechanism of ER stress and high-fat diet (HFD)-blocked autophagy. A rodent model was adopted in mice via a HFD and an 8-week swim exercise training intervention. The mouse IR model was successfully established through HFD treatment: body mass, adipose weight, HOMA-IR index increased, as well as IRS1, inhibited in the muscle of HFD mice. Moreover, the AMPK/PGC1α pathway was depressed and IRE1, PERK, ATF6-related ER stress signaling was activated in the muscle of HFD mice. While autophagy factors, including BNIP3, LC3II/LC3I, and PINK1, decreased. However, additional 8-week exercise training during HFD was found to reverse all these changes and alleviate IR. Thus, exercise training could facilitate HFD-blocked protective autophagy via the activation of the AMPK/PGC1α pathway to relieve insulin resistance in mice. Our study provides experimental data for the prevention of T2DM and insulin resistance.
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Affiliation(s)
- Fangzhou Cheng
- Department of Cardiovascular Medicine, Shenzhen Yantian District People's Hospital, Shenzhen, Guangdong, China
| | - Yaoshan Dun
- Division of Cardiac Rehabilitation, Department of Physical Medicine & Rehabilitation, Xiangya Hospital Central South University, Changsha, Hunan, China; Division of Preventive Cardiology, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital Central South University, Changsha, Hunan, China
| | - Jing Cheng
- Department of Cardiovascular Medicine, Shenzhen Yantian District People's Hospital, Shenzhen, Guangdong, China
| | - Jeffrey W Ripley-Gonzalez
- Division of Cardiac Rehabilitation, Department of Physical Medicine & Rehabilitation, Xiangya Hospital Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital Central South University, Changsha, Hunan, China
| | - Wenlong Jiang
- Department of Cardiovascular Medicine, Shenzhen Yantian District People's Hospital, Shenzhen, Guangdong, China
| | - Baiyang You
- Division of Cardiac Rehabilitation, Department of Physical Medicine & Rehabilitation, Xiangya Hospital Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital Central South University, Changsha, Hunan, China.
| | - Suixin Liu
- Division of Cardiac Rehabilitation, Department of Physical Medicine & Rehabilitation, Xiangya Hospital Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital Central South University, Changsha, Hunan, China.
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28
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Wang S, Sheng F, Zou L, Xiao J, Li P. Hyperoside attenuates non-alcoholic fatty liver disease in rats via cholesterol metabolism and bile acid metabolism. J Adv Res 2022; 34:109-122. [PMID: 35024184 PMCID: PMC8655136 DOI: 10.1016/j.jare.2021.06.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 02/05/2023] Open
Abstract
Introduction Non-alcoholic fatty liver disease (NAFLD) results from increased hepatic total cholesterol (TC) and total triglyceride (TG) accumulation. In our previous study, we found that rats treated with hyperoside became resistant to hepatic lipid accumulation. Objectives The present study aims to investigate the possible mechanisms responsible for the inhibitory effects of hyperoside on the lipid accumulation in the liver tissues of the NAFLD rats. Methods Label-free proteomics and metabolomics targeting at bile acid (BA) metabolism were applied to disclose the mechanisms for hyperoside reducing hepatic lipid accumulation among the NAFLD rats. Results In response to hyperoside treatment, several proteins related to the fatty acid degradation pathway, cholesterol metabolism pathway, and bile secretion pathway were altered, including ECI1, Acnat2, ApoE, and BSEP, etc. The expression of nuclear receptors (NRs), including farnesoid X receptor (FXR) and liver X receptor α (LXRα), were increased in hyperoside-treated rats' liver tissue, accompanied by decreased protein expression of catalyzing enzymes in the hepatic de novo lipogenesis and increased protein level of enzymes in the classical and alternative BA synthetic pathway. Liver conjugated BAs were less toxic and more hydrophilic than unconjugated BAs. The BA-targeted metabolomics suggest that hyperoside could decrease the levels of liver unconjugated BAs and increase the levels of liver conjugated BAs. Conclusions Taken together, the results suggest that hyperoside could improve the condition of NAFLD by regulating the cholesterol metabolism as well as BAs metabolism and excretion. These findings contribute to understanding the mechanisms by which hyperoside lowers the cholesterol and triglyceride in NAFLD rats.
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Key Words
- ACC, Acetyl-CoA carboxylase
- AMPK, AMP-activated protein kinase
- Apo, apolipoprotein
- BAs, bile acids
- BSH, bile salt hydrolase
- Bile acid metabolism
- CYP27A1, sterol 27-hydroxylase
- CYP7A1, cholesterol 7α-hydroxylase
- Cholesterol metabolism
- FGF15/19, fibroblast growth factor 15/19
- FXR, farnesoid X receptor
- Hyperoside
- LC-MS, the combination of high-performance liquid chromatography and mass spectrometry
- LXRα, liver X receptor α
- Label-free proteomics
- NAFLD
- NAFLD, non-alcoholic fatty liver disease
- PMSF, phenylmethylsulfonyl fluoride
- QC, quality control
- SDS, sodium dodecyl sulfate
- SHP, small heterodimer partner
- SREBP1, sterol regulatory element-binding protein 1
- SREBP2, sterol regulatory element-binding protein 2
- SREBPs, sterol regulatory element binding proteins
- TC, total cholesterol
- TG, triglyceride
- TGR5, Takeda G-protein-coupled receptor 5
- Targeted metabolomics
- VLDL, very low-density lipoprotein
- WB, Western blot
- pACC, phosphorylated ACC
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Affiliation(s)
- Songsong Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
| | - Feiya Sheng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
| | - Liang Zou
- School of Medicine, Chengdu University, Chengdu 610106, China
| | - Jianbo Xiao
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou 510632, China.,Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo, Vigo, Spain
| | - Peng Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
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López-Pastor AR, Infante-Menéndez J, González-Illanes T, González-López P, González-Rodríguez Á, García-Monzón C, Vega de Céniga M, Esparza L, Gómez-Hernández A, Escribano Ó. Concerted regulation of non-alcoholic fatty liver disease progression by microRNAs in apolipoprotein E-deficient mice. Dis Model Mech 2021; 14:273592. [PMID: 34850865 PMCID: PMC8713993 DOI: 10.1242/dmm.049173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 11/12/2021] [Indexed: 12/24/2022] Open
Abstract
The prevalence of non-alcoholic fatty liver disease (NAFLD) is constantly increasing, and altered expression of microRNAs (miRNAs) fosters the development and progression of many pathologies, including NAFLD. Therefore, we explored the role of new miRNAs involved in the molecular mechanisms that trigger NAFLD progression and evaluated them as biomarkers for diagnosis. As a NAFLD model, we used apolipoprotein E-deficient mice administered a high-fat diet for 8 or 18 weeks. We demonstrated that insulin resistance and decreased lipogenesis and autophagy observed after 18 weeks on the diet are related to a concerted regulation carried out by miR-26b-5p, miR-34a-5p, miR-149-5p and miR-375-3p. We also propose circulating let-7d-5p and miR-146b-5p as potential biomarkers of early stages of NAFLD. Finally, we confirmed that circulating miR-34a-5p and miR-375-3p are elevated in the late stages of NAFLD and that miR-27b-3p and miR-122-5p are increased with disease progression. Our results reveal a synergistic regulation of key processes in NAFLD development and progression by miRNAs. Further investigation is needed to unravel the roles of these miRNAs for developing new strategies for NAFLD treatment. This article has an associated First Person interview with the joint first authors of the paper. Summary:Apoe−/− mice administered a high-fat diet represent a model of non-alcoholic fatty liver disease, revealing the synergistic regulation of key processes in disease progression by miRNAs and indicating some miRNAs as biomarkers for diagnosis.
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Affiliation(s)
- Andrea R López-Pastor
- Laboratory of Hepatic and Cardiovascular Diseases, Biochemistry and Molecular Biology Department, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Jorge Infante-Menéndez
- Laboratory of Hepatic and Cardiovascular Diseases, Biochemistry and Molecular Biology Department, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Tamara González-Illanes
- Laboratory of Hepatic and Cardiovascular Diseases, Biochemistry and Molecular Biology Department, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Paula González-López
- Laboratory of Hepatic and Cardiovascular Diseases, Biochemistry and Molecular Biology Department, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Águeda González-Rodríguez
- Liver Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Princesa, 28009 Madrid, Spain.,CIBER of Hepatic and Digestive Diseases (CIBERehd), 28029 Madrid, Spain
| | - Carmelo García-Monzón
- Liver Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Princesa, 28009 Madrid, Spain.,CIBER of Hepatic and Digestive Diseases (CIBERehd), 28029 Madrid, Spain
| | - Melina Vega de Céniga
- Department of Angiology and Vascular Surgery, Hospital de Galdakao-Usansolo, Galdakao, 48960 Bizkaia, Spain.,Biocruces Bizkaia Health Research Institute, Barakaldo, 48903 Bizkaia, Spain
| | - Leticia Esparza
- Department of Angiology and Vascular Surgery, Hospital de Galdakao-Usansolo, Galdakao, 48960 Bizkaia, Spain.,Biocruces Bizkaia Health Research Institute, Barakaldo, 48903 Bizkaia, Spain
| | - Almudena Gómez-Hernández
- Laboratory of Hepatic and Cardiovascular Diseases, Biochemistry and Molecular Biology Department, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Óscar Escribano
- Laboratory of Hepatic and Cardiovascular Diseases, Biochemistry and Molecular Biology Department, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
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Xu J, Guo Y, Huang X, Ma X, Li P, Wang Y, Wang X, Yuan L. Effects of DHA dietary intervention on hepatic lipid metabolism in apolipoprotein E-deficient and C57BL/6J wild-type mice. Biomed Pharmacother 2021; 144:112329. [PMID: 34653759 DOI: 10.1016/j.biopha.2021.112329] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/05/2021] [Accepted: 10/08/2021] [Indexed: 02/08/2023] Open
Abstract
Lipid metabolic disorder occurs when ApoE gene is deficient. However, the role of Docosahexaenoic acid (DHA) in relieving hepatic lipid metabolic disorder in apolipoprotein E-deficient (ApoE -/-) mice remains unknown. We fed 3-month-old C57BL/6J wild-type (C57 wt) and ApoE -/- mice respectively with normal or DHA fortified diet for 5 months. We found ApoE gene deficiency caused hepatic lipid deposition and increased lipid levels in plasma and liver. Hepatic gene expression of SRB1, CD36 and FABP5 in ApoE -/- mice, protein expression of HMGCR, LRP1 in C57 wt mice and protein expression of LRP1 in ApoE -/- mice increased after DHA intervention. In DHA-fed ApoE -/- mice, LXRα/β and PPARα protein expression down-regulated in cytoplasm, but LXRα/β protein expression up-regulated in nucleus. DHA treatment decreased RXRα and RXRβ expression in C57 wt and ApoE -/- female mice. Deletion of ApoE gene caused lipid metabolism disorder in liver of mice. DHA treatment efficiently meliorated lipid metabolism caused by ApoE deficient through the regulation of gene and protein expressions of molecules involved in liver fatty acids transport and lipid metabolism.
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Affiliation(s)
- Jingjing Xu
- School of Public Health, Capital Medical University, Beijing 100069, PR China
| | - Yujie Guo
- School of Public Health, Capital Medical University, Beijing 100069, PR China
| | - Xiaochen Huang
- School of Public Health, Capital Medical University, Beijing 100069, PR China
| | - Xiaojun Ma
- School of Public Health, Capital Medical University, Beijing 100069, PR China
| | - Pengfei Li
- School of Public Health, Capital Medical University, Beijing 100069, PR China
| | - Ying Wang
- The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215153, PR China
| | - Xixiang Wang
- School of Public Health, Capital Medical University, Beijing 100069, PR China
| | - Linhong Yuan
- School of Public Health, Capital Medical University, Beijing 100069, PR China.
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2-Amino-3-Methylimidazo[4,5-f]quinoline Triggering Liver Damage by Inhibiting Autophagy and Inducing Endoplasmic Reticulum Stress in Zebrafish ( Danio rerio). Toxins (Basel) 2021; 13:toxins13110826. [PMID: 34822609 PMCID: PMC8620671 DOI: 10.3390/toxins13110826] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/19/2021] [Accepted: 11/20/2021] [Indexed: 12/16/2022] Open
Abstract
It is important to note that 2-Amino-3-methylimidazole[4,5-f]quinoline (IQ) is one of the most common heterocyclic amines (HCAs), which is a class of mutagenic/carcinogenic harmful compounds mainly found in high-protein thermal processed foods and contaminated environments. However, the pre-carcinogenic toxicity of IQ to the liver and its mechanism are poorly understood, further research is needed. In light of this, we exposed zebrafish to IQ (0, 8, 80, and 800 ng/mL) for 35 days, followed by comprehensive experimental studies. Histopathological and ultrastructural analysis showed that hepatocytes were damaged. TUNEL results showed that IQ induced apoptosis of liver cells, the expression of apoptosis factor gene was significantly increased, and the expression of Bcl-2 protein was significantly decreased. In addition, upregulated expression of the 78-kDa glucose-regulated protein (GRP78) and C/EBP homologous protein (CHOP) and endoplasmic reticulum stress (ERS)-related factors transcription levels were elevated obviously, suggesting that IQ induced ERS. Decreased protein expression of autophagy-related 5 (Atg5)-Atg12, Beclin1, and LC3-II, increased protein expression of p62, and autophagy-related factors transcription levels were significantly decreased, suggesting that IQ inhibited autophagy. Overall, our research showed that the potential harm of IQ to the liver before the occurrence of liver cancer was related to ERS and its mediated autophagy and apoptosis pathways.
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32
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Chen L, Shi J, Qu X. Metformin Weakens the Angiogenic Potential of Human Bone Marrow Mesenchymal Stem Cells (hBMSCs) by Activating Mammalian Target of Rapamycin (mTOR) Signaling. J BIOMATER TISS ENG 2021. [DOI: 10.1166/jbt.2021.2786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
To study metformin’s effect on the angiogenesis of human bone marrow mesenchymal stem cells (hBMSCs). Cells were treated with metformin (0.5, 1, 10, 50, 100, 200 and 500 βM) for 14 days, followed by analysis of cell viability and total fatty acid profile, level of
VEGFR-2, Tie-2, VE-Cadherin and mTOR signaling protein, cell differentiation by microtubule generation and cell migration by transwell assay. Metformin dose dependently decreased cell survival and reduced palmitate, oleate, stearate and linoleate content. In addition, it downregulated VEGFR-2
and Tie-2 and decreased the angiogenic potential of BMSCs and down-regulated VE-Cadherin. Western blot and PCR analysis showed that metformin activated mTOR signaling and up-regulated the transcription of autophagyrelated genes. Metformin can reduce BMSCs angiogenic potential by regulating
mTOR signal pathway.
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Affiliation(s)
- Lihua Chen
- Center of Diagnosis and Treatment of Spinal Surgery, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, Miao Autonomous Prefecture, 445000, China
| | - Ji’e Shi
- Department of Orthopaedics, The People’s Hospital ofZhijiang City, Zhijiang, Hubei, 443200, China
| | - Xiu Qu
- Department of Pain, Puren Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei, 430000, China
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33
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Santos-Sánchez G, Cruz-Chamorro I, Álvarez-Ríos AI, Fernández-Santos JM, Vázquez-Román MV, Rodríguez-Ortiz B, Álvarez-Sánchez N, Álvarez-López AI, Millán-Linares MDC, Millán F, Pedroche J, Fernández-Pachón MS, Lardone PJ, Guerrero JM, Bejarano I, Carrillo-Vico A. Lupinus angustifolius Protein Hydrolysates Reduce Abdominal Adiposity and Ameliorate Metabolic Associated Fatty Liver Disease (MAFLD) in Western Diet Fed-ApoE -/- Mice. Antioxidants (Basel) 2021; 10:antiox10081222. [PMID: 34439470 PMCID: PMC8388992 DOI: 10.3390/antiox10081222] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/21/2021] [Accepted: 07/26/2021] [Indexed: 12/11/2022] Open
Abstract
Metabolic-associated fatty liver disease (MAFLD) is the most important cause of liver disease worldwide. It is characterized by the accumulation of fat in the liver and is closely associated with abdominal obesity. In addition, oxidative stress and inflammation are significant features involved in MAFLD. Recently, our group demonstrated that lupin protein hydrolysates (LPHs) had lipid lowering, antioxidant, and anti-inflammatory effects. Sixty male mice fed with a Western diet were intragastrically treated with LPHs (or vehicle) for 12 weeks. Liver and adipose tissue lipid accumulation and hepatic inflammatory and oxidant status were evaluated. A significant decrease in steatosis was observed in LPHs-treated mice, which presented a decreased gene expression of CD36 and LDL-R, crucial markers in MAFLD. In addition, LPHs increased the hepatic total antioxidant capacity and reduced the hepatic inflammatory status. Moreover, LPHs-treated mice showed a significant reduction in abdominal adiposity. This is the first study to show that the supplementation with LPHs markedly ameliorates the generation of the steatotic liver caused by the intake of a Western diet and reduces abdominal obesity in ApoE−/− mice. Future clinical trials should shed light on the effects of LPHs on MAFLD.
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Affiliation(s)
- Guillermo Santos-Sánchez
- Instituto de Biomedicina de Sevilla, IBiS (Universidad de Sevilla, HUVR, Junta de Andalucía, CSIC), 41013 Seville, Spain; (G.S.-S.); (B.R.-O.); (N.Á.-S.); (A.I.Á.-L.); (P.J.L.); (J.M.G.); (I.B.)
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Universidad de Sevilla, 41009 Seville, Spain
| | - Ivan Cruz-Chamorro
- Instituto de Biomedicina de Sevilla, IBiS (Universidad de Sevilla, HUVR, Junta de Andalucía, CSIC), 41013 Seville, Spain; (G.S.-S.); (B.R.-O.); (N.Á.-S.); (A.I.Á.-L.); (P.J.L.); (J.M.G.); (I.B.)
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Universidad de Sevilla, 41009 Seville, Spain
- Correspondence: (I.C.-C.); (A.C.-V.); Tel.: +34-955-923-106 (I.C.-C. & A.C.-V.)
| | - Ana Isabel Álvarez-Ríos
- Departamento de Bioquímica Clínica, Unidad de Gestión de Laboratorios, Hospital Universitario Virgen del Rocío, 41013 Seville, Spain;
| | - José María Fernández-Santos
- Departamento Citología e Histología Normal y Patológica, Universidad de Sevilla, 41009 Seville, Spain; (J.M.F.-S.); (M.V.V.-R.)
| | - María Victoria Vázquez-Román
- Departamento Citología e Histología Normal y Patológica, Universidad de Sevilla, 41009 Seville, Spain; (J.M.F.-S.); (M.V.V.-R.)
| | - Beatriz Rodríguez-Ortiz
- Instituto de Biomedicina de Sevilla, IBiS (Universidad de Sevilla, HUVR, Junta de Andalucía, CSIC), 41013 Seville, Spain; (G.S.-S.); (B.R.-O.); (N.Á.-S.); (A.I.Á.-L.); (P.J.L.); (J.M.G.); (I.B.)
| | - Nuria Álvarez-Sánchez
- Instituto de Biomedicina de Sevilla, IBiS (Universidad de Sevilla, HUVR, Junta de Andalucía, CSIC), 41013 Seville, Spain; (G.S.-S.); (B.R.-O.); (N.Á.-S.); (A.I.Á.-L.); (P.J.L.); (J.M.G.); (I.B.)
| | - Ana Isabel Álvarez-López
- Instituto de Biomedicina de Sevilla, IBiS (Universidad de Sevilla, HUVR, Junta de Andalucía, CSIC), 41013 Seville, Spain; (G.S.-S.); (B.R.-O.); (N.Á.-S.); (A.I.Á.-L.); (P.J.L.); (J.M.G.); (I.B.)
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Universidad de Sevilla, 41009 Seville, Spain
| | | | - Francisco Millán
- Department of Food & Health, Instituto de la Grasa, CSIC, Ctra, Utrera Km 1, 41013 Seville, Spain; (F.M.); (J.P.)
| | - Justo Pedroche
- Department of Food & Health, Instituto de la Grasa, CSIC, Ctra, Utrera Km 1, 41013 Seville, Spain; (F.M.); (J.P.)
| | - María Soledad Fernández-Pachón
- Área de Nutrición y Bromatología, Departamento de Biología Molecular e Ingeniería Bioquímica, Universidad Pablo de Olavide, Ctra Utrera Km 1, 41013 Seville, Spain;
| | - Patricia Judith Lardone
- Instituto de Biomedicina de Sevilla, IBiS (Universidad de Sevilla, HUVR, Junta de Andalucía, CSIC), 41013 Seville, Spain; (G.S.-S.); (B.R.-O.); (N.Á.-S.); (A.I.Á.-L.); (P.J.L.); (J.M.G.); (I.B.)
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Universidad de Sevilla, 41009 Seville, Spain
| | - Juan Miguel Guerrero
- Instituto de Biomedicina de Sevilla, IBiS (Universidad de Sevilla, HUVR, Junta de Andalucía, CSIC), 41013 Seville, Spain; (G.S.-S.); (B.R.-O.); (N.Á.-S.); (A.I.Á.-L.); (P.J.L.); (J.M.G.); (I.B.)
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Universidad de Sevilla, 41009 Seville, Spain
- Departamento de Bioquímica Clínica, Unidad de Gestión de Laboratorios, Hospital Universitario Virgen del Rocío, 41013 Seville, Spain;
| | - Ignacio Bejarano
- Instituto de Biomedicina de Sevilla, IBiS (Universidad de Sevilla, HUVR, Junta de Andalucía, CSIC), 41013 Seville, Spain; (G.S.-S.); (B.R.-O.); (N.Á.-S.); (A.I.Á.-L.); (P.J.L.); (J.M.G.); (I.B.)
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Universidad de Sevilla, 41009 Seville, Spain
| | - Antonio Carrillo-Vico
- Instituto de Biomedicina de Sevilla, IBiS (Universidad de Sevilla, HUVR, Junta de Andalucía, CSIC), 41013 Seville, Spain; (G.S.-S.); (B.R.-O.); (N.Á.-S.); (A.I.Á.-L.); (P.J.L.); (J.M.G.); (I.B.)
- Departamento de Bioquímica Médica y Biología Molecular e Inmunología, Universidad de Sevilla, 41009 Seville, Spain
- Correspondence: (I.C.-C.); (A.C.-V.); Tel.: +34-955-923-106 (I.C.-C. & A.C.-V.)
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Han S, Zhu F, Huang X, Yan P, Xu K, Shen F, Sun J, Yang Z, Jin G, Teng Y. Maternal obesity accelerated non-alcoholic fatty liver disease in offspring mice by reducing autophagy. Exp Ther Med 2021; 22:716. [PMID: 34007325 PMCID: PMC8120514 DOI: 10.3892/etm.2021.10148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 03/02/2021] [Indexed: 12/14/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a chronic liver disease characterized by an excessive accumulation of triacylglycerol in the liver. Autophagy is a lysosome-dependent degradation product recovery process, which widely occurs in eukaryotic cells, responsible for the vital maintenance of cellular energy balance. Previously published studies have demonstrated that autophagy is closely related to NAFLD occurrence and maternal obesity increases the susceptibility of offspring to non-alcoholic fatty liver disease, however, the underlying mechanism of this remains unclear. In the present study, NAFLD mouse models (offspring of an obese mother mouse via high-fat feeding) were generated, and the physiological indices of the liver were observed using total cholesterol, triglyceride, high-density lipoprotein and low-density lipoprotein serum assay kits. The morphological changes of the liver were also observed via HE, Masson and oil red O staining. Reverse transcription-quantitative-PCR and western blotting were performed to detect changes of autophagy-related genes in liver or fibrosis marker proteins (α-smooth muscle actin or TGF-β1). Changes in serum inflammatory cytokine IL-6 levels were determined via ELISA. The results of the present study demonstrated that the offspring of an obese mother were more likely to develop NALFD than the offspring of a chow-fed mother, due to their increased association with liver fibrosis. When feeding continued to 17 weeks, the worst cases of NAFLD were observed and the level of autophagy decreased significantly compared with the offspring of a normal weight mouse. In addition, after 17 weeks of feeding, compared with the offspring of a chow-fed mother, the offspring of an obese mouse mother had reduced adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) phosphorylation levels and increased mammalian target of rapamycin (mTOR) phosphorylation levels. These results suggested that a reduced level of AMPK/mTOR mediated autophagy may be of vital importance for the increased susceptibility of offspring to NAFLD caused by maternal obesity. In conclusion, the current study provided a new direction for the treatment of NAFLD in offspring caused by maternal obesity.
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Affiliation(s)
- Shuguang Han
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Endocrinology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Feng Zhu
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
| | - Xiaoxia Huang
- Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China.,The Second Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310000, P.R. China
| | - Panpan Yan
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
| | - Ke Xu
- Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
| | - Fangfang Shen
- Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
| | - Jiawen Sun
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Zeyu Yang
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Guoxi Jin
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Endocrinology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Yiqun Teng
- Graduate School, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China.,Department of Pediatrics, The Second Affiliated Hospital of Jiaxing University, Jiaxing Second Hospital, Jiaxing, Zhejiang 314000, P.R. China
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Ramos VDM, Kowaltowski AJ, Kakimoto PA. Autophagy in Hepatic Steatosis: A Structured Review. Front Cell Dev Biol 2021; 9:657389. [PMID: 33937257 PMCID: PMC8081956 DOI: 10.3389/fcell.2021.657389] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 03/16/2021] [Indexed: 01/18/2023] Open
Abstract
Steatosis is the accumulation of neutral lipids in the cytoplasm. In the liver, it is associated with overeating and a sedentary lifestyle, but may also be a result of xenobiotic toxicity and genetics. Non-alcoholic fatty liver disease (NAFLD) defines an array of liver conditions varying from simple steatosis to inflammation and fibrosis. Over the last years, autophagic processes have been shown to be directly associated with the development and progression of these conditions. However, the precise role of autophagy in steatosis development is still unclear. Specifically, autophagy is necessary for the regulation of basic metabolism in hepatocytes, such as glycogenolysis and gluconeogenesis, response to insulin and glucagon signaling, and cellular responses to free amino acid contents. Also, genetic knockout models for autophagy-related proteins suggest a critical relationship between autophagy and hepatic lipid metabolism, but some results are still ambiguous. While autophagy may seem necessary to support lipid oxidation in some contexts, other evidence suggests that autophagic activity can lead to lipid accumulation instead. This structured literature review aims to critically discuss, compare, and organize results over the last 10 years regarding rodent steatosis models that measured several autophagy markers, with genetic and pharmacological interventions that may help elucidate the molecular mechanisms involved.
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Affiliation(s)
| | | | - Pamela A. Kakimoto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
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Chen H, Chen F, Zhang M, Chen Y, Cui L, Liang C. A Review of APOE Genotype-Dependent Autophagic Flux Regulation in Alzheimer's Disease. J Alzheimers Dis 2021; 84:535-555. [PMID: 34569952 DOI: 10.3233/jad-210602] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Autophagy is a basic physiological process maintaining cell renewal, the degradation of dysfunctional organelles, and the clearance of abnormal proteins and has recently been identified as a main mechanism underlying the onset and progression of Alzheimer's disease (AD). The APOE ɛ4 genotype is the strongest genetic determinant of AD pathogenesis and initiates autophagic flux at different times. This review synthesizes the current knowledge about the potential pathogenic effects of ApoE4 on autophagy and describes its associations with the biological hallmarks of autophagy and AD from a novel perspective. Via a remarkable variety of widely accepted signaling pathway markers, such as mTOR, TFEB, SIRT1, LC3, p62, LAMP1, LAMP2, CTSD, Rabs, and V-ATPase, ApoE isoforms differentially modulate autophagy initiation; membrane expansion, recruitment, and enclosure; autophagosome and lysosome fusion; and lysosomal degradation. Although the precise pathogenic mechanism varies for different genes and proteins, the dysregulation of autophagic flux is a key mechanism on which multiple pathogenic processes converge.
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Affiliation(s)
- Huiyi Chen
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
- Yuebei People's Hospital, Affiliated Hospital of Shantou University Medical College, Shaoguan, China
| | - Feng Chen
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Miaoping Zhang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yanting Chen
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Lili Cui
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Chunmei Liang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
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Shin DW. Lipophagy: Molecular Mechanisms and Implications in Metabolic Disorders. Mol Cells 2020; 43:686-693. [PMID: 32624503 PMCID: PMC7468585 DOI: 10.14348/molcells.2020.0046] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 06/01/2020] [Accepted: 06/03/2020] [Indexed: 02/07/2023] Open
Abstract
Autophagy is an intracellular degradation system that breaks down damaged organelles or damaged proteins using intracellular lysosomes. Recent studies have also revealed that various forms of selective autophagy play specific physiological roles under different cellular conditions. Lipid droplets, which are mainly found in adipocytes and hepatocytes, are dynamic organelles that store triglycerides and are critical to health. Lipophagy is a type of selective autophagy that targets lipid droplets and is an essential mechanism for maintaining homeostasis of lipid droplets. However, while processes that regulate lipid droplets such as lipolysis and lipogenesis are relatively well known, the major factors that control lipophagy remain largely unknown. This review introduces the underlying mechanism by which lipophagy is induced and regulated, and the current findings on the major roles of lipophagy in physiological and pathological status. These studies will provide basic insights into the function of lipophagy and may be useful for the development of new therapies for lipophagy dysfunction-related diseases.
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Affiliation(s)
- Dong Wook Shin
- College of Biomedical & Health Science, Konkuk University, Chungju 27478, Korea
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Zhang C, Jia Y, Liu B, Wang G, Zhang Y. TLR4 knockout upregulates the expression of Mfn2 and PGC-1α in a high-fat diet and ischemia-reperfusion mice model of liver injury. Life Sci 2020; 254:117762. [PMID: 32437795 DOI: 10.1016/j.lfs.2020.117762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 05/01/2020] [Accepted: 05/05/2020] [Indexed: 12/30/2022]
Abstract
AIMS Patients with nonalcoholic fatty liver disease (NAFLD) have less tolerance to ischemia-reperfusion injury (IRI) of the liver than those with the healthy liver; hence have a higher incidence of severe complications after surgery. This study aimed to investigate the dynamics of the liver and mitochondrial damage and the impact of TLR4 knockout (TLR4KO) on Mfn2 expression in the composite model of NAFLD and IRI. MAIN METHODS We performed high-fat diet (HFD) feeding and ischemia reperfusion (IR) on wild type (WT) and TLR4 knockout TLR4KO mice. KEY FINDINGS The degree of structural and functional injuries to the liver and mitochondria (NAFLD and IRI) is greater than that caused by a single factor (NAFLD or IRI) or a simple superposition of both. The IL-6 and TNF-α expressions were significantly suppressed (P < .05), while PGC-1α and Mfn2 expressions were up-regulated considerably (P < .05) after TLR4KO. Furthermore, mitochondrial fusion increased, while ATP consumption and ROS production decreased significantly after TLR4KO (P < .05). The degree of reduction of compound injury by TLR4KO is more significant than the reduction degree of single factor injury. Also, TNF-α and IL-6 levels can be used predictive markers for mitochondrial damage and liver tolerance to NAFLD and IRI. SIGNIFICANCE TLR4KO upregulates the expression of Mfn2 and PGC-1α in the composite model of NAFLD and IRI. This pathway may be related to IL-6 and TNF-α. This evidence provides theoretical and experimental basis for the subsequent Toll-like receptor 4 (TLR4) receptor targeted therapy.
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Affiliation(s)
- Chaoyang Zhang
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Yinzhao Jia
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Bo Liu
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, Wenzhou Medical University, Wenzhou, China
| | - Guoliang Wang
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Yong Zhang
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China.
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