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Lyu Z, Chan YT, Lu Y, Fung Lam T, Wu X, Wu J, Xu L, Yang W, Zhang C, Lidan Zhong L, Wang N. Osteoprotegerin mediates adipogenesis in obesity. J Adv Res 2024:S2090-1232(24)00255-8. [PMID: 38906326 DOI: 10.1016/j.jare.2024.06.018] [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: 02/08/2024] [Revised: 06/03/2024] [Accepted: 06/18/2024] [Indexed: 06/23/2024] Open
Abstract
INTRODUCTION Adipogenesis, the process of white adipose tissue expansion, plays a critical role in the development of obesity. Osteoprotegerin (OPG), known for its role in bone metabolism regulation, emerges as a potential regulator in mediating adipogenesis during obesity onset. OBJECTIVES This study aims to elucidate the involvement of OPG in adipogenesis during the early phases of diet-induced obesity and explore its therapeutic potential in obesity management. METHODS Using a diet-induced obesity model, we investigated OPG expression patterns in adipocytes and explored the mechanisms underlying its involvement in adipogenesis. We also assessed the effects of targeted silencing of OPG and recombinant OPG administration on obesity progression and insulin resistance. Additionally, the impact of electroacupuncture treatment on OPG levels and obesity management was evaluated in both animal models and human participants. RESULTS OPG expression was prominently activated in adipocytes of white adipose tissues during the early phase of diet-induced obesity. Hyperlipidemia induced Cbfa1-dependent OPG transcription, initiating and promoting adipogenesis, leading to cell-size expansion and lipid storage. Intracellular OPG physically bound to RAR and released the PPARɤ/RXR complex, activating adipogenesis-associated gene expression. Targeted silencing of OPG suppressed obesity development, while recombinant OPG administration promoted disease progression and insulin resistance in obese mice. Electroacupuncture treatment suppressed obesity development in an OPG-dependent manner and improved obesity parameters in obese human participants. CONCLUSION OPG emerges as a key regulator in mediating adipogenesis during obesity development. Targeting OPG holds promise for the prevention and treatment of obesity, as evidenced by the efficacy of electroacupuncture treatment in modulating OPG levels and managing obesity-related outcomes.
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Affiliation(s)
- Zipan Lyu
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Yau-Tuen Chan
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yuanjun Lu
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Tsz Fung Lam
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Xingyao Wu
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Junyu Wu
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Lin Xu
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Wei Yang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Cheng Zhang
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Linda Lidan Zhong
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore; School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
| | - Ning Wang
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
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Hong J, Shi Y, Xu F, Chen J, Mi M, Ren Q, Kang Y. Integration of Lipidomics and Transcriptomics Identifies the Regulation of Lipid Homeostasis as Potential Mechanisms of Konjac Glucomannan against Hepatic Steatosis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 38833514 DOI: 10.1021/acs.jafc.4c01604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Hepatic steatosis is characterized by substantial disruption in the liver's lipid level regulation. Konjac glucomannan (KGM) is acknowledged as a nutritious food that has the potential to prevent hyperlipidemia. This study utilized lipidomics and transcriptomics to investigate the efficacy of KGM in alleviating high-fat diet-induced hepatic steatosis by regulating lipid homeostasis. The findings indicated that supplementation of KGM for a duration of 10 weeks led to significant decreases in body weight, liver weight, and epididymal fat tissue weight. Furthermore, improvements in lipid concentrations in plasma and liver samples were observed, along with enhancements in glucose tolerance and the mitigation of liver damage. Additionally, lipidomics analysis revealed that the primary differential lipid metabolites were mainly associated with fatty acid metabolism pathways. Transcriptomic analysis showed that KGM significantly altered the gene expression of the peroxisome proliferator-activated receptor (PPAR) signaling pathway in the liver. Moreover, KGM demonstrated a significant regulatory impact on the hepatic expression of PPARγ, potentially mitigating hepatic steatosis through modulation of the PPARγ-mediated lipid metabolism pathway. In conclusion, these findings suggest that KGM effectively mitigates steatosis by modulating hepatic lipid metabolites and controlling PPARγ-mediated genes in the liver.
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Affiliation(s)
- Jian Hong
- School of Marine and Biological Engineering, Yancheng Teachers University, Yancheng 224007, Jiangsu, China
- Department of Tibetan Medicine, Tibetan Traditional Medicine College, Lhasa 850000, Xizang, China
| | - Yun Shi
- College of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224051, Jiangsu, China
- Department of Tibetan Medicine, Tibetan Traditional Medicine College, Lhasa 850000, Xizang, China
| | - Fengzhuo Xu
- School of Marine and Biological Engineering, Yancheng Teachers University, Yancheng 224007, Jiangsu, China
| | - Jing Chen
- Department of Tibetan Medicine, Tibetan Traditional Medicine College, Lhasa 850000, Xizang, China
| | - Ma Mi
- Department of Tibetan Medicine, Tibetan Traditional Medicine College, Lhasa 850000, Xizang, China
| | - Qingjia Ren
- Department of Tibetan Medicine, Tibetan Traditional Medicine College, Lhasa 850000, Xizang, China
| | - Yijun Kang
- School of Marine and Biological Engineering, Yancheng Teachers University, Yancheng 224007, Jiangsu, China
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Jiang Z, Huang B, Cui Z, Lu Z, Ma H. Synergistic effect of genistein and adiponectin reduces fat deposition in chicken hepatocytes by activating the ERβ-mediated SIRT1-AMPK signaling pathway. Poult Sci 2024; 103:103734. [PMID: 38636201 PMCID: PMC11040169 DOI: 10.1016/j.psj.2024.103734] [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: 02/10/2024] [Revised: 03/31/2024] [Accepted: 04/02/2024] [Indexed: 04/20/2024] Open
Abstract
Dietary supplementation with bioactive substances that can regulate lipid metabolism is an effective approach for reducing excessive fat deposition in chickens. Genistein (GEN) has the potential to alleviate fat deposition; however, the underlying mechanism of GEN's fat-reduction action in chickens remains unclear. Therefore, the present study aimed to explore the underlying mechanism of GEN on the reduction of fat deposition from a novel perspective: intercellular transmission of adipokine between adipocytes and hepatocytes. The findings showed that GEN enhanced the secretion of adiponectin (APN) in chicken adipocytes, and the enhancement effect of GEN was completely blocked when the cells were pretreated with inhibitors targeting estrogen receptor β (ERβ) or proliferator-activated receptor γ (PPARγ) signals, respectively. Furthermore, the results demonstrated that both co-treatment with GEN and APN or treatment with the medium supernatant (Med SUP) derived from chicken adipocytes treated with GEN significantly decreased the content of triglyceride and increased the protein levels of ERβ, Sirtuin 1 (SIRT1) and phosphor-AMP-activated protein kinase (p-AMPK) in chicken hepatocytes compared to the cells treated with GEN or APN alone. Moreover, the increase in the protein levels of SIRT1 and p-AMPK induced by GEN and APN co-treatment or Med SUP treatment were blocked in chicken hepatocytes pretreated with the inhibitor of ERβ signals. Importantly, the up-regulatory effect of GEN and APN co-treatment or Med SUP treatment on the protein level of p-AMPK was also blocked in chicken hepatocytes pretreated with a SIRT1 inhibitor; however, the increase in the protein level of SIRT1 induced by GEN and APN co-treatment or Med SUP treatment was not reversed when the hepatocytes were pretreated with an AMPK inhibitor. In conclusion, the present study demonstrated that GEN enhanced APN secretion by activating the ERβ-Erk-PPARγ signaling pathway in chicken adipocytes. Subsequently, adipocyte-derived APN synergized with GEN to activate the ERβ-mediated SIRT1-AMPK signaling pathway in chicken hepatocytes, ultimately reducing fat deposition. These findings provide substantial evidence from a novel perspective, supporting the potential use of GEN as a dietary supplement to prevent excessive fat deposition in poultry.
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Affiliation(s)
- Zhihao Jiang
- Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Benzeng Huang
- Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Ziyi Cui
- Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Ze Lu
- Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Haitian Ma
- Key Laboratory of Animal Physiology and Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China.
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Zhang Y, Jiang Q, Liang X, Qian Q, Xiong J, Liu C, Xu J, Wang N, Xu Y, Zhou P, Lu S, Zhou Q, Yuan Y, Fan X, Liu J, Chen S. Coagulation Factor VII Fine-tunes Hepatic Steatosis by Blocking AKT-CD36-Mediated Fatty Acid Uptake. Diabetes 2024; 73:682-700. [PMID: 38394642 DOI: 10.2337/db23-0814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 02/13/2024] [Indexed: 02/25/2024]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is considered a risk factor for cardiovascular and cerebrovascular disease owing to its close association with coagulant disturbances. However, the precise biological functions and mechanisms that connect coagulation factors to NAFLD pathology remain inadequately understood. Herein, with unbiased bioinformatics analyses followed by functional testing, we demonstrate that hepatic expression of coagulation factor VII (FVII) decreases in patients and mice with NAFLD/nonalcoholic steatohepatitis (NASH). By using adenovirus-mediated F7-knockdown and hepatocyte-specific F7-knockout mouse models, our mechanistic investigations unveil a noncoagulant function of hepatic FVII in mitigating lipid accumulation and lipotoxicity. This protective effect is achieved through the suppression of fatty acid uptake, orchestrated via the AKT-CD36 pathway. Interestingly, intracellular FVII directly interacts with AKT and PP2A, thereby promoting their association and triggering the dephosphorylation of AKT. Therapeutic intervention through adenovirus-mediated liver-specific overexpression of F7 results in noteworthy improvements in liver steatosis, inflammation, injury, and fibrosis in severely afflicted NAFLD mice. In conclusion, our findings highlight coagulation factor FVII as a critical regulator of hepatic steatosis and a potential target for the treatment of NAFLD and NASH. ARTICLE HIGHLIGHTS
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Affiliation(s)
- Yao Zhang
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Quanxin Jiang
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | - Qiqi Qian
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Xiong
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chuchu Liu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junting Xu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ning Wang
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Xu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peihui Zhou
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sijia Lu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qian Zhou
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanmei Yuan
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuemei Fan
- Department of Biochemistry and Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junli Liu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Suzhen Chen
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Qiu S, Wu Q, Wang H, Liu D, Chen C, Zhu Z, Zheng H, Yang G, Li L, Yang M. AZGP1 in POMC neurons modulates energy homeostasis and metabolism through leptin-mediated STAT3 phosphorylation. Nat Commun 2024; 15:3377. [PMID: 38643150 PMCID: PMC11032411 DOI: 10.1038/s41467-024-47684-9] [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: 04/25/2023] [Accepted: 04/10/2024] [Indexed: 04/22/2024] Open
Abstract
Zinc-alpha2-glycoprotein (AZGP1) has been implicated in peripheral metabolism; however, its role in regulating energy metabolism in the brain, particularly in POMC neurons, remains unknown. Here, we show that AZGP1 in POMC neurons plays a crucial role in controlling whole-body metabolism. POMC neuron-specific overexpression of Azgp1 under high-fat diet conditions reduces energy intake, raises energy expenditure, elevates peripheral tissue leptin and insulin sensitivity, alleviates liver steatosis, and promotes adipose tissue browning. Conversely, mice with inducible deletion of Azgp1 in POMC neurons exhibit the opposite metabolic phenotypes, showing increased susceptibility to diet-induced obesity. Notably, an increase in AZGP1 signaling in the hypothalamus elevates STAT3 phosphorylation and increases POMC neuron excitability. Mechanistically, AZGP1 enhances leptin-JAK2-STAT3 signaling by interacting with acylglycerol kinase (AGK) to block its ubiquitination degradation. Collectively, these results suggest that AZGP1 plays a crucial role in regulating energy homeostasis and glucose/lipid metabolism by acting on hypothalamic POMC neurons.
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Affiliation(s)
- Sheng Qiu
- Department of Endocrinology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
- Key Laboratory of Medical Diagnostics of Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Qinan Wu
- Department of Endocrinology, The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, 402360, China
| | - Hao Wang
- Department of Endocrinology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Dongfang Liu
- Department of Endocrinology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Chen Chen
- Endocrinology, SBMS, Faculty of Medicine, University of Queensland, Brisbane, QLD, 4072, Australia
| | - Zhiming Zhu
- Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Hongting Zheng
- Department of Endocrinology, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Gangyi Yang
- Department of Endocrinology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China.
| | - Ling Li
- Department of Endocrinology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China.
- Key Laboratory of Medical Diagnostics of Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
| | - Mengliu Yang
- Department of Endocrinology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China.
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Luo K, Peters BA, Moon JY, Xue X, Wang Z, Usyk M, Hanna DB, Landay AL, Schneider MF, Gustafson D, Weber KM, French A, Sharma A, Anastos K, Wang T, Brown T, Clish CB, Kaplan RC, Knight R, Burk RD, Qi Q. Metabolic and inflammatory perturbation of diabetes associated gut dysbiosis in people living with and without HIV infection. Genome Med 2024; 16:59. [PMID: 38643166 PMCID: PMC11032597 DOI: 10.1186/s13073-024-01336-1] [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: 06/21/2023] [Accepted: 04/16/2024] [Indexed: 04/22/2024] Open
Abstract
BACKGROUND Gut dysbiosis has been linked with both HIV infection and diabetes, but its interplay with metabolic and inflammatory responses in diabetes, particularly in the context of HIV infection, remains unclear. METHODS We first conducted a cross-sectional association analysis to characterize the gut microbial, circulating metabolite, and immune/inflammatory protein features associated with diabetes in up to 493 women (~ 146 with prevalent diabetes with 69.9% HIV +) of the Women's Interagency HIV Study. Prospective analyses were then conducted to determine associations of identified metabolites with incident diabetes over 12 years of follow-up in 694 participants (391 women from WIHS and 303 men from the Multicenter AIDS Cohort Study; 166 incident cases were recorded) with and without HIV infection. Mediation analyses were conducted to explore whether gut bacteria-diabetes associations are explained by altered metabolites and proteins. RESULTS Seven gut bacterial genera were identified to be associated with diabetes (FDR-q < 0.1), with positive associations for Shigella, Escherichia, Megasphaera, and Lactobacillus, and inverse associations for Adlercreutzia, Ruminococcus, and Intestinibacter. Importantly, the associations of most species, especially Adlercreutzia and Ruminococcus, were largely independent of antidiabetic medications use. Meanwhile, 18 proteins and 76 metabolites, including 3 microbially derived metabolites (trimethylamine N-oxide, phenylacetylglutamine (PAGln), imidazolepropionic acid (IMP)), 50 lipids (e.g., diradylglycerols (DGs) and triradylglycerols (TGs)) and 23 non-lipid metabolites, were associated with diabetes (FDR-q < 0.1), with the majority showing positive associations and more than half of them (59/76) associated with incident diabetes. In mediation analyses, several proteins, especially interleukin-18 receptor 1 and osteoprotegerin, IMP and PAGln partially mediate the observed bacterial genera-diabetes associations, particularly for those of Adlercreutzia and Escherichia. Many diabetes-associated metabolites and proteins were altered in HIV, but no effect modification on their associations with diabetes was observed by HIV. CONCLUSION Among individuals with and without HIV, multiple gut bacterial genera, blood metabolites, and proinflammatory proteins were associated with diabetes. The observed mediated effects by metabolites and proteins in genera-diabetes associations highlighted the potential involvement of inflammatory and metabolic perturbations in the link between gut dysbiosis and diabetes in the context of HIV infection.
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Affiliation(s)
- Kai Luo
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Brandilyn A Peters
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Jee-Young Moon
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Xiaonan Xue
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Zheng Wang
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Mykhaylo Usyk
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - David B Hanna
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Alan L Landay
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Michael F Schneider
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Deborah Gustafson
- Department of Neurology, State University of New York-Downstate Medical Center, Brooklyn, NY, USA
| | | | - Audrey French
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Anjali Sharma
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Kathryn Anastos
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Obstetrics and Gynecology and Women's Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Tao Wang
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Todd Brown
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Clary B Clish
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Robert C Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Rob Knight
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, CA, USA
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
- Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
- Department of Computer Science and Engineering, University of California, San Diego, La Jolla, CA, USA
| | - Robert D Burk
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Obstetrics and Gynecology and Women's Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Qibin Qi
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA.
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
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Cui Y, Ru M, Wang Y, Weng L, Haji RA, Liang H, Zeng Q, Wei Q, Xie X, Yin C, Huang J. Epigenetic regulation of H3K27me3 in laying hens with fatty liver hemorrhagic syndrome induced by high-energy and low-protein diets. BMC Genomics 2024; 25:374. [PMID: 38627644 PMCID: PMC11022457 DOI: 10.1186/s12864-024-10270-w] [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: 02/20/2024] [Accepted: 03/29/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Fatty liver hemorrhagic syndrome (FLHS) in the modern poultry industry is primarily caused by nutrition. Despite encouraging progress on FLHS, the mechanism through which nutrition influences susceptibility to FLHS is still lacking in terms of epigenetics. RESULTS In this study, we analyzed the genome-wide patterns of trimethylated lysine residue 27 of histone H3 (H3K27me3) enrichment by chromatin immunoprecipitation-sequencing (ChIP-seq), and examined its association with transcriptomes in healthy and FLHS hens. The study results indicated that H3K27me3 levels were increased in the FLHS hens on a genome-wide scale. Additionally, H3K27me3 was found to occupy the entire gene and the distant intergenic region, which may function as silencer-like regulatory elements. The analysis of transcription factor (TF) motifs in hypermethylated peaks has demonstrated that 23 TFs are involved in the regulation of liver metabolism and development. Transcriptomic analysis indicated that differentially expressed genes (DEGs) were enriched in fatty acid metabolism, amino acid, and carbohydrate metabolism. The hub gene identified from PPI network is fatty acid synthase (FASN). Combined ChIP-seq and transcriptome analysis revealed that the increased H3K27me3 and down-regulated genes have significant enrichment in the ECM-receptor interaction, tight junction, cell adhesion molecules, adherens junction, and TGF-beta signaling pathways. CONCLUSIONS Overall, the trimethylation modification of H3K27 has been shown to have significant regulatory function in FLHS, mediating the expression of crucial genes associated with the ECM-receptor interaction pathway. This highlights the epigenetic mechanisms of H3K27me3 and provides insights into exploring core regulatory targets and nutritional regulation strategies in FLHS.
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Affiliation(s)
- Yong Cui
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Meng Ru
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Yujie Wang
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Linjian Weng
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Ramlat Ali Haji
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Haiping Liang
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Qingjie Zeng
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Qing Wei
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Xianhua Xie
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Chao Yin
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Jianzhen Huang
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China.
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Ren W, Wang Z, Guo H, Gou Y, Dai J, Zhou X, Sheng N. GenX analogs exposure induced greater hepatotoxicity than GenX mainly via activation of PPARα pathway while caused hepatomegaly in the absence of PPARα in female mice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 344:123314. [PMID: 38218542 DOI: 10.1016/j.envpol.2024.123314] [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: 10/30/2023] [Revised: 12/27/2023] [Accepted: 01/04/2024] [Indexed: 01/15/2024]
Abstract
Despite their use as substitutes for perfluorooctanoic acid, the potential toxicities of hexafluoropropylene oxide dimer acid (HFPO-DA, commercial name: GenX) and its analogs (PFDMOHxA, PFDMO2HpA, and PFDMO2OA) remain poorly understood. To assess the hepatotoxicity of these chemicals on females, each chemical was orally administered to female C57BL/6 mice at the dosage of 0.5 mg/kg/d for 28 d. The contribution of peroxisome proliferator-activated receptors (PPARα and γ) and other nuclear receptors involving in these toxic effects of GenX and its analogs were identified by employing two PPAR knockout mice (PPARα-/- and PPARγΔHep) in this study. Results showed that the hepatotoxicity of these chemicals increased in the order of GenX < PFDMOHxA < PFDMO2HpA < PFDMO2OA. The increases of relative liver weight and liver injury markers were significantly much lower in PPARα-/- mice than in PPARα+/+ mice after GenX analog exposure, while no significant differences were observed between PPARγΔHep and its corresponding wildtype groups (PPARγF/F mice), indicating that GenX analog induce hepatotoxicity mainly via PPARα instead of PPARγ. The PPARα-dependent complement pathways were inhibited in PFDMO2HpA and PFDMO2OA exposed PPARα+/+ mice, which might be responsible for the observed liver inflammation. In PPARα-/- mice, hepatomegaly and increased liver lipid content were observed in PFDMO2HpA and PFDMO2OA treated groups. The activated pregnane X receptor (PXR) and constitutive activated receptor (CAR) pathways in the liver of PPARα-/- mice, which were highlighted by bioinformatics analysis, provided a reasonable explanation for hepatomegaly in the absence of PPARα. Our results indicate that GenX analogs could induce more serious hepatotoxicity than GenX whether there is a PPARα receptor or not. These chemicals, especially PFDMO2HpA and PFDMO2OA, may not be appropriate PFOA alternatives.
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Affiliation(s)
- Wanlan Ren
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China; State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhiru Wang
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hua Guo
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Yong Gou
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jiayin Dai
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Xuming Zhou
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Nan Sheng
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
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Fan X, Li X, Li J, Zhang Y, Wei X, Hu H, Zhang B, Du H, Zhao M, Zhu R, Yang D, Oh Y, Gu N. Polystyrene nanoplastics induce glycolipid metabolism disorder via NF-κB and MAPK signaling pathway in mice. J Environ Sci (China) 2024; 137:553-566. [PMID: 37980039 DOI: 10.1016/j.jes.2023.02.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 11/20/2023]
Abstract
Nanoplastics-induced developmental and reproductive toxicity, neurotoxicity and immunotoxicity are a focus of widespread attention. However, the effects of nanoplastics (NPs) on glycolipid metabolism and the precise underlying mechanisms are unclear at present. Here, we showed that oral administration of polystyrene nanoparticles (PS-NPs) disrupts glycolipid metabolism, with reactive oxygen species (ROS) identified as a potential key signaling molecule. After PS-NPs treatment, excessive production of ROS induced the inflammatory response and activated the antioxidant pathway through nuclear factor-erythroid factor 2-related factor 2. The activation of nuclear factor-κB (NFκB) signaling pathway induced the phosphorylation of the mitogen-activated protein kinases (MAPK) signaling pathway, which induced the activation of extracellular regulated kinases (ERK) and p38. Constitutive activation of the MAPK signaling proteins induced high continued phosphorylation of insulin receptor substrate-1, in turn, leading to decreased protein kinase B (Akt) activity, which weakened the sensitivity of liver cells to insulin signals and induced insulin resistance. In parallel, phosphorylation of Akt led to loss of control of FoXO1, a key gene of gluconeogenesis, activating transcription of glucose-6-phosphatase (G6PC) and phosphoenolpyruvate carboxykinase (PEPCK) in a manner dependent on PGC1α. Moreover, the activated ERK promoted lipid accumulation through ERK-PPARγ cascades. Therefore, sterol regulatory element-binding protein-1 and levels of its downstream lipogenic enzymes, ACC-1, were up-regulated. Upon treatment with the antioxidant resveratrol, PS-NPs-induced glucose and lipid metabolic disorders were improved by inhibiting ROS-induced activation of NFκB and MAPK signaling pathway in mice. Based on above, PS-NPs exposure disrupts glycolipid metabolism in mice, with ROS identified as a potential key signaling molecule.
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Affiliation(s)
- Xingpei Fan
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Xiaoyan Li
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Jiaxin Li
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Yuxia Zhang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Xiangjuan Wei
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150006, China
| | - Hailong Hu
- Department of Medicine, Renal Electrolyte and Hypertension Division, Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia 19104, USA
| | - Boya Zhang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Haining Du
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Meimei Zhao
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Ruijiao Zhu
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Daqian Yang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Yuri Oh
- Faculty of Education, Wakayama University, Wakayama 640-8441, Japan
| | - Ning Gu
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150006, China.
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10
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Ma J, Wang L, Zhao Y, Gao Y, Yin Z, Zhao M, Zhao Y, Pang X, Wang J, Xue W, Tu P, Li J, Zheng J. 2-(2-Phenylethyl)chromone-enriched extract of Chinese agarwood (Aquilaria sinensis) inhibits atherosclerosis progression through endoplasmic reticulum stress-mediated CD36 expression in macrophages. JOURNAL OF ETHNOPHARMACOLOGY 2024; 320:117411. [PMID: 37956912 DOI: 10.1016/j.jep.2023.117411] [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: 09/30/2023] [Revised: 10/31/2023] [Accepted: 11/08/2023] [Indexed: 11/19/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Chinese agarwood, derived from the Aquilaria sinensis (Lour.) Gilg (Thymelaeaceae), has a long history of use in Traditional Chinese Medicine for the management of cardiovascular disease. However, the specific active ingredients responsible for its impact on atherosclerosis are yet to be fully understood. AIM OF THE STUDY The aim of this study is to investigate the anti-atherosclerotic effectiveness of the 2-(2-phenylethyl)chromone-enriched extract derived from Chinese agarwood (CPE) through the ER stress-mediated CD36 pathway. MATERIALS AND METHODS To assess the effectiveness of CPE, an atherosclerotic mouse model was established using ApoE-/- mice with a high-fat diet. Then we assessed the impact of CPE on lipid accumulation in THP-1 macrophages that were exposed to oxLDL. Subsequently, the effect of CPE on the expression of CD36 and markers related to ER stress was characterized. RESULTS Our in vivo research confirmed that CPE effectively reduces the formation of aortic plaques in atherosclerotic ApoE-/- mice. Additionally, our in vitro study observed that CPE inhibits the uptake of oxLDL and hinders the generation of foam cells. This effect is achieved by downregulating the level of CD36 in macrophages. Furthermore, our study revealed that the increase in CD36 expression, resulting from oxLDL exposure, is governed by the activation of JNK1/2/3 signaling pathways and the initiation of ER stress. CONCLUSION CPE demonstrated significant efficacy to inhibit the atherosclerosis. The ER stress/P-JNK/PPARγ/CD36 signaling pathway plays critical involvement in modulating the foam cell formation in vitro and in vivo. These findings underscore the efficacy of CPE as a viable therapeutic intervention for the treatment of atherosclerosis.
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Affiliation(s)
- Jiale Ma
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Lingxiao Wang
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yimu Zhao
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yun Gao
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Ziyu Yin
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Maoyuan Zhao
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yunfang Zhao
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Xueping Pang
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Junjiao Wang
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Weigang Xue
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Pengfei Tu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, China.
| | - Jun Li
- Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Jiao Zheng
- Beijing University of Chinese Medicine, Beijing, 100029, China.
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11
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Xie C, Liu K, Xie Y, Liu S, Ji B. Metabolism-related signalling pathways involved in the pathogenesis and development of metabolic dysfunction-associated steatotic liver disease. Clin Res Hepatol Gastroenterol 2024; 48:102264. [PMID: 38142587 DOI: 10.1016/j.clinre.2023.102264] [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: 11/03/2023] [Revised: 12/03/2023] [Accepted: 12/10/2023] [Indexed: 12/26/2023]
Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD) which formerly known as non-alcoholic fatty liver disease (NAFLD) is one of the causes of liver cirrhosis. Currently, a growing number of liver cirrhosis cases develop on the basis of MASLD, and the pathogenesis of MASLD remains unclear. This paper reviews the research progress on the involvement of different metabolism-related signalling pathways in the pathogenesis and development of MASLD.
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Affiliation(s)
- Cheng Xie
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Centre, First Hospital of Jilin University, 1 XinMin St., Changchun, Jilin, China.
| | - Kaiyu Liu
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Centre, First Hospital of Jilin University, 1 XinMin St., Changchun, Jilin, China.
| | - Yixin Xie
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Centre, First Hospital of Jilin University, 1 XinMin St., Changchun, Jilin, China.
| | - Shun Liu
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Centre, First Hospital of Jilin University, 1 XinMin St., Changchun, Jilin, China.
| | - Bai Ji
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Centre, First Hospital of Jilin University, 1 XinMin St., Changchun, Jilin, China.
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12
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Qiu Y, Gan M, Wang X, Liao T, Chen Q, Lei Y, Chen L, Wang J, Zhao Y, Niu L, Wang Y, Zhang S, Zhu L, Shen L. The global perspective on peroxisome proliferator-activated receptor γ (PPARγ) in ectopic fat deposition: A review. Int J Biol Macromol 2023; 253:127042. [PMID: 37742894 DOI: 10.1016/j.ijbiomac.2023.127042] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023]
Abstract
Excessive expansion of adipocytes can have unhealthy consequences as excess free fatty acids enter other tissues and cause ectopic fat deposition by resynthesizing triglycerides. This lipid accumulation in various tissues is harmful and can increase the risk of related metabolic diseases such as type II diabetes, cardiovascular disease, and insulin resistance. Peroxisome proliferator-activated receptors (PPARs) are members of the nuclear hormone receptor superfamily that play a key role in energy metabolism as fatty acid metabolism sensors, and peroxisome proliferator-activated receptor γ (PPARγ) is the main subtype responsible for fat cell differentiation and adipogenesis. In this paper, we introduce the main structure and function of PPARγ and its regulatory role in the process of lipogenesis in the liver, kidney, skeletal muscle, and pancreas. This information can serve as a reference for further understanding the regulatory mechanisms and measures of the PPAR family in the process of ectopic fat deposition.
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Affiliation(s)
- Yanhao Qiu
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Mailin Gan
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Xingyu Wang
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Tianci Liao
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Qiuyang Chen
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuhang Lei
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Lei Chen
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Jinyong Wang
- Chongqing Academy of Animal Science, Rongchang, Chongqing 402460, China
| | - Ye Zhao
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Lili Niu
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan Wang
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Shunhua Zhang
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Li Zhu
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| | - Linyuan Shen
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China.
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13
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Fu Q, Frick JM, O'Neil MF, Eller OC, Morris EM, Thyfault JP, Christianson JA, Lane RH. Early-life stress perturbs the epigenetics of Cd36 concurrent with adult onset of NAFLD in mice. Pediatr Res 2023; 94:1942-1950. [PMID: 37479748 PMCID: PMC10665193 DOI: 10.1038/s41390-023-02714-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/03/2023] [Accepted: 06/15/2023] [Indexed: 07/23/2023]
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is one of the most common liver diseases in the U.S. and worldwide. The roles of early postnatal life stress (EPLS) and the fatty acid translocase (CD36) on the pathogenesis of adult-onset NAFLD remain unknown. We hypothesized that EPLS, in the form of neonatal maternal separation (NMS), would predispose mice towards developing adult NAFLD, increase hepatic CD36 expression, and differentially methylate Cd36 promoter concurrently. METHODS NMS was performed on mice from postnatal day 1 to 21 and a high-fat/high-sucrose (HFS) diet was started at 4 weeks of age to generate four experimental groups: Naive-control diet (CD), Naive-HFS, NMS-CD, and NMS-HFS. RESULTS NMS alone caused NAFLD in adult male mice at 25 weeks of age. The effects of NMS and HFS were generally additive in terms of NAFLD, hepatic Cd36 mRNA levels, and hepatic Cd36 promoter DNA hypomethylation. Cd36 promoter methylation negatively correlated with Cd36 mRNA levels. Two differentially methylated regions (DMRs) within Cd36 promoter regions appeared to be vulnerable to NMS in the mouse. CONCLUSIONS Our findings suggest that NMS increases the risk of an individual, particularly male, towards NAFLD when faced with a HFS diet later in life. IMPACT The key message of this article is that neonatal maternal separation and a postweaning high-fat/high-sucrose diet increased the risk of an individual, particularly male, towards NAFLD in adult life. What this study adds to the existing literature includes the identification of two vulnerable differentially methylated regions in hepatic Cd36 promoters whose methylation levels very strongly negatively correlated with Cd36 mRNA. The impact of this article is that it provides an early-life environment-responsive gene/promoter methylation model and an animal model for furthering the mechanistic study on how the insults in early-life environment are "transmitted" into adulthood and caused NAFLD.
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Affiliation(s)
- Qi Fu
- Department of Research Administration, Children's Mercy Hospital, Kansas City, MO, USA
| | - Jenna M Frick
- Department of Anatomy and Cell Biology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Maura F O'Neil
- Department of Pathology and Laboratory Medicine, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Olivia C Eller
- Department of Anatomy and Cell Biology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - E Matthew Morris
- Department of Molecular and Integrative Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - John P Thyfault
- Department of Molecular and Integrative Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
- Research Service, Kansas City VA Medical Center, Kansas City, KS, USA
| | - Julie A Christianson
- Department of Anatomy and Cell Biology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Robert H Lane
- Department of Administration, Children's Mercy Hospital, Kansas City, MO, USA.
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14
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Xiong Y, Ma C, Li Q, Zhang W, Zhao H, Ren P, Zhang K, Lei X. Melatonin ameliorates simulated-microgravity-induced mitochondrial dysfunction and lipid metabolism dysregulation in hepatocytes. FASEB J 2023; 37:e23132. [PMID: 37552471 DOI: 10.1096/fj.202301137r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/12/2023] [Accepted: 07/26/2023] [Indexed: 08/09/2023]
Abstract
The liver is an essential multifunctional organ, which constantly communicates with nearly all tissues. It has raised the concern that microgravity exposure can lead to liver dysfunction and metabolic syndromes. However, molecular mechanisms and intervention measures of the adverse effects of microgravity on hepatocytes are limited. In this study, we utilized the random positioning machine culture system to investigate the adverse effects on hepatocytes under simulated microgravity (SMG). Our results showed that SMG impaired hepatocyte viability, causing cell cycle arrest and apoptosis. Compared to normal gravity, it also triggered lipid accumulation, elevated triglyceride (TG) and ROS levels, and impaired mitochondria function in hepatocytes. Furthermore, RNA sequencing results showed that SMG upregulated genes implicated in lipid metabolisms, including PPARγ, PLIN2, CD36, FABPs, etc. Importantly, all these defects can be suppressed by melatonin, a potent antioxidant secreted by the pineal gland, suggesting its potential use of therapeutic intervention.
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Affiliation(s)
- Yue Xiong
- Center for Energy Metabolism and Reproduction, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Chiyuan Ma
- Center for Energy Metabolism and Reproduction, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Qin Li
- Center for Energy Metabolism and Reproduction, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Wenya Zhang
- Center for Energy Metabolism and Reproduction, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Huashan Zhao
- Center for Energy Metabolism and Reproduction, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Peigen Ren
- Center for Energy Metabolism and Reproduction, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Ke Zhang
- Institute of Neurological and Psychiatric Disorders, Shenzhen Bay Laboratory, Shenzhen, China
| | - Xiaohua Lei
- Center for Energy Metabolism and Reproduction, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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15
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Yang S, Zhang R, Deng W, Chang S, Li Y, Li S. Pirfenidone ameliorates liver steatosis by targeting the STAT3-SCD1 axis. Inflamm Res 2023; 72:1773-1787. [PMID: 37659014 DOI: 10.1007/s00011-023-01776-2] [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: 05/20/2023] [Revised: 07/14/2023] [Accepted: 07/31/2023] [Indexed: 09/05/2023] Open
Abstract
OBJECTIVE Previous studies reported that pirfenidone (PFD) is associated with liver disease. However, the effects of pirfenidone on energy metabolism and hepatic lipid accumulation are still poorly understood. METHODS In this study, C57BL/6J mice were randomly divided into two groups, and fed a normal chow diet (NCD) or a high-fat diet (HFD) for 16 weeks. At the end of the eighth week, half of the mice fed on both diets were treated with PFD. Biochemical and lipid metabolism-related indices were analyzed. Furthermore, Hepa 1-6 cells and mouse primary hepatocytes (MPHs) were incubated with PFD with or without free fatty acid (FFA) treatment. Then, stattic (a p-STAT3 inhibitor) or Ad-shSTAT3 was used to further elucidate the effects of Signal Transducer and Activator of Transcription 3 (STAT3) signaling on PFD regulation of hepatic steatosis. RESULTS PFD ameliorated obesity and hepatic lipid deposition in HFD mice by decreasing stearoyl-CoA desaturase 1 (SCD1) expression and upregulating p-STAT3 in the liver. In Hepa 1-6 cells and MPHs, PFD also down-regulated the expression of SCD1. STAT3 inhibition treatment eliminated the benefits of PFD on both SCD1 and hepatic steatosis. CONCLUSION In summary, our data reveal that PFD may play an important role in mitigating hepatic steatosis in a STAT3-SCD1-dependent manner.
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Affiliation(s)
- Shan Yang
- Department of Endocrinology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Renzi Zhang
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wenzhen Deng
- Department of Endocrinology, Qianjiang Central Hospital of Chongqing, Chongqing, 409000, China
| | - Shichuan Chang
- Oncology Department, Chongqing University Three Gorges Hospital, Chongqing, 404000, China
| | - Yang Li
- Department of Endocrinology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - Sheng Li
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Li L, Sun H, Chen J, Ding C, Yang X, Han H, Sun Q. Mitigation of non-alcoholic steatohepatitis via recombinant Orosomucoid 2, an acute phase protein modulating the Erk1/2-PPARγ-Cd36 pathway. Cell Rep 2023; 42:112697. [PMID: 37355990 DOI: 10.1016/j.celrep.2023.112697] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 04/27/2023] [Accepted: 06/09/2023] [Indexed: 06/27/2023] Open
Abstract
The therapeutic administration of recombinant proteins is utilized in a multitude of research studies for treating various diseases. In this study, we investigate the therapeutic potential of Orosomucoid 2 (Orm2), an acute phase protein predominantly secreted by hepatocytes, for treating non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH). Our results show that high Orm2 expression prevents high-fat-diet (HFD)-induced obesity in mice. Pharmacological administration of recombinant ORM2 protein ameliorates hepatic steatosis, inflammation, hepatocyte injury, and fibrosis in mouse livers afflicted by NAFLD and NASH under dietary stress. Orm2 knockout mice develop spontaneous obesity under a regular diet and exacerbate HFD-induced steatosis, steatohepatitis, and fibrosis. Mechanistically, Orm2 deletion activates the Erk1/2-PPARγ-Cd36 signaling pathway, increasing fatty acid uptake and absorption in hepatocytes and mice. Overall, our findings underscore the critical role of Orm2 in preventing NASH and associated NAFLD in the context of obesity.
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Affiliation(s)
- Li Li
- Department of Animal Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Haoming Sun
- Department of Animal Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Jionghao Chen
- Department of Animal Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Cong Ding
- Department of Animal Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiaojun Yang
- Department of Animal Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Hua Han
- Department of Biomedicine, Future Agriculture Institute, Northwest A&F University, Yangling, Shaanxi, China
| | - Qingzhu Sun
- Department of Animal Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China.
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17
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Wang H, Zhao Y, Pan Y, Yang A, Li C, Wang S, Dong Z, Li M, Wang S, Zhang Z, Zhu Y, Zhang D, Sun G. Inhibition of phospholipase D1 ameliorates hepatocyte steatosis and non-alcoholic fatty liver disease. JHEP Rep 2023; 5:100726. [PMID: 37138676 PMCID: PMC10149370 DOI: 10.1016/j.jhepr.2023.100726] [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: 09/19/2022] [Revised: 02/14/2023] [Accepted: 02/27/2023] [Indexed: 05/05/2023] Open
Abstract
Background & Aims Phospholipase D1 (PLD1), a phosphatidylcholine-hydrolysing enzyme, is involved in cellular lipid metabolism. However, its involvement in hepatocyte lipid metabolism and consequently non-alcoholic fatty liver disease (NAFLD) has not been explicitly explored. Methods NAFLD was induced in hepatocyte-specific Pld1 knockout (Pld1(H)-KO) and littermate Pld1 flox/flox (Pld1-Flox) control mice feeding a high-fat diet (HFD) for 20 wk. Changes of the lipid composition in the liver were compared. Alpha mouse liver 12 (AML12) cells and mouse primary hepatocytes were incubated with oleic acid or sodium palmitate in vitro to explore the role of PLD1 in the development of hepatic steatosis. Hepatic PLD1 expression was evaluated in liver biopsy samples in patients with NAFLD. Results PLD1 expression levels were increased in the hepatocytes of patients with NAFLD and HFD-fed mice. Compared with Pld1-Flox mice, Pld1(H)-KO mice exhibited decreased plasma glucose and lipid levels as well as lipid accumulation in liver tissues after HFD feeding. Transcriptomic analysis showed that hepatocyte-specific deficiency of PLD1 decreased Cd36 expression in steatosis liver tissues, which was confirmed at the protein and gene levels. In vitro, specific inhibition of PLD1 with VU0155069 or VU0359595 decreased CD36 expression and lipid accumulation in oleic acid- or sodium palmitate-treated AML12 cells or primary hepatocytes. Inhibition of hepatocyte PLD1 significantly altered lipid composition, especially phosphatidic acid and lysophosphatidic acid levels in liver tissues with hepatic steatosis. Furthermore, phosphatidic acid, the downstream product of PLD1, increased the expression levels of CD36 in AML12 cells, which was reversed by a PPARγ antagonist. Conclusions Hepatocyte-specific Pld1 deficiency ameliorates lipid accumulation and NAFLD development by inhibiting the PPARγ/CD36 pathway. PLD1 may be a new target for the treatment of NAFLD. Impact and implications The involvement of PLD1 in hepatocyte lipid metabolism and NAFLD has not been explicitly explored. In this study, we found that the inhibition of hepatocyte PLD1 exerted potent protective effects against HFD-induced NAFLD, which were attributable to a reduction in PPARγ/CD36 pathway-mediated lipid accumulation in hepatocytes. Targeting hepatocyte PLD1 may be a new target for the treatment of NAFLD.
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Affiliation(s)
- Huan Wang
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Tolerance Induction and Organ Protection in Transplantation, Beijing, China
- Beijing Clinical Research Institute, Beijing, China
| | - Yushang Zhao
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Tolerance Induction and Organ Protection in Transplantation, Beijing, China
- Beijing Clinical Research Institute, Beijing, China
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Beijing Laboratory of Oral Health, Capital Medical University School of Basic Medicine, Beijing, China
| | - Yuhualei Pan
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Tolerance Induction and Organ Protection in Transplantation, Beijing, China
- Beijing Clinical Research Institute, Beijing, China
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Beijing Laboratory of Oral Health, Capital Medical University School of Basic Medicine, Beijing, China
| | - Aiting Yang
- Beijing Clinical Research Institute, Beijing, China
- National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Changying Li
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Tolerance Induction and Organ Protection in Transplantation, Beijing, China
- Beijing Clinical Research Institute, Beijing, China
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Beijing Laboratory of Oral Health, Capital Medical University School of Basic Medicine, Beijing, China
| | - Song Wang
- Beijing Clinical Research Institute, Beijing, China
| | - Zhao Dong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Mengyi Li
- General Surgery Department, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Songlin Wang
- Beijing Laboratory of Oral Health, Capital Medical University School of Basic Medicine, Beijing, China
| | - Zhongtao Zhang
- General Surgery Department, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yanbing Zhu
- Beijing Clinical Research Institute, Beijing, China
- Corresponding author. Address: Capital Medical University Affiliated Beijing Friendship Hospital, 95 Yongan Road, Xicheng District, Beijing 100050, China. Tel.: (8610)63139309, fax: (8610)63139421.
| | - Dong Zhang
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Tolerance Induction and Organ Protection in Transplantation, Beijing, China
- Beijing Clinical Research Institute, Beijing, China
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Beijing Laboratory of Oral Health, Capital Medical University School of Basic Medicine, Beijing, China
- General Surgery Department, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- Corresponding author. Address: Capital Medical University Affiliated Beijing Friendship Hospital, 95 Yongan Road, Xicheng District, Beijing 100050, China. Tel.: (8610)63139309, fax: (8610)63139421.
| | - Guangyong Sun
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Tolerance Induction and Organ Protection in Transplantation, Beijing, China
- Beijing Clinical Research Institute, Beijing, China
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Beijing Laboratory of Oral Health, Capital Medical University School of Basic Medicine, Beijing, China
- Corresponding author. Address: Capital Medical University Affiliated Beijing Friendship Hospital, 95 Yongan Road, Xicheng District, Beijing 100050, China. Tel.: (8610)63139309, fax: (8610)63139421.
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Vachliotis ID, Polyzos SA. Osteoprotegerin/Receptor Activator of Nuclear Factor-Kappa B Ligand/Receptor Activator of Nuclear Factor-Kappa B Axis in Obesity, Type 2 Diabetes Mellitus, and Nonalcoholic Fatty Liver Disease. Curr Obes Rep 2023:10.1007/s13679-023-00505-4. [PMID: 37208545 DOI: 10.1007/s13679-023-00505-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/29/2023] [Indexed: 05/21/2023]
Abstract
PURPOSE OF REVIEW To summarize evidence on the potential involvement of the osteoprotegerin (OPG)/receptor activator of nuclear factor-kappa B (NF-κΒ) ligand (RANKL)/receptor activator of NF-κΒ (RANK) axis in the pathogenesis of metabolic diseases. RECENT FINDINGS The OPG-RANKL-RANK axis, which has been originally involved in bone remodeling and osteoporosis, is now recognized as a potential contributor in the pathogenesis of obesity and its associated comorbidities, i.e., type 2 diabetes mellitus and nonalcoholic fatty liver disease. Besides bone, OPG and RANKL are also produced in adipose tissue and may be involved in the inflammatory process associated with obesity. Metabolically healthy obesity has been associated with lower circulating OPG concentrations, possibly representing a counteracting mechanism, while elevated serum OPG levels may reflect an increased risk of metabolic dysfunction or cardiovascular disease. OPG and RANKL have been also proposed as potential regulators of glucose metabolism and are potentially involved in the pathogenesis of type 2 diabetes mellitus. In clinical terms, type 2 diabetes mellitus has been consistently associated with increased serum OPG concentrations. With regard to nonalcoholic fatty liver disease, experimental data suggest a potential contribution of OPG and RANKL in hepatic steatosis, inflammation, and fibrosis; however, most clinical studies showed reduction in serum concentrations of OPG and RANKL. The emerging contribution of the OPG-RANKL-RANK axis to the pathogenesis of obesity and its associated comorbidities warrants further investigation by mechanistic studies and may have potential diagnostic and therapeutic implications.
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Affiliation(s)
- Ilias D Vachliotis
- First Department of Pharmacology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece.
- Second Department of Internal Medicine, 424 General Military Hospital, Thessaloniki, 56429, Greece.
| | - Stergios A Polyzos
- First Department of Pharmacology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece
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19
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Zhuang Y, Lv X, Cui K, Chai J, Zhang N. Early Solid Diet Supplementation Influences the Proteomics of Rumen Epithelium in Goat Kids. BIOLOGY 2023; 12:biology12050684. [PMID: 37237498 DOI: 10.3390/biology12050684] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/24/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023]
Abstract
It is well known that solid diet supplementation in early life can significantly promote rumen development and metabolic function in young ruminants. However, the changes in the expressed proteome and related metabolism in rumen epithelium in response to a supplemented solid diet remain unclear. In this study, rumen epithelial tissue from goats in three diet regimes including milk replacer only (MRO), milk replacer supplemented concentrate (MRC), and milk replacer supplemented concentrate plus alfalfa pellets (MCA) were collected for measurement of the expression of epithelial proteins using proteomic technology (six per group). The results showed that solid diet significantly improved the growth performance of goats, enhanced the ability of rumen fermentation, and promoted the development of epithelial papilla (p < 0.05). Proteome analysis revealed the distinct difference in the expressed protein in the MRC and MCA group compared with the MRO group (42 upregulated proteins and 79 downregulated proteins in MRC; 38 upregulated proteins and 73 downregulated proteins in MCA). Functional analysis showed that solid diet supplementation activated a variety of molecular functions in the epithelium, including protein binding, ATP binding, structural constituent of muscle, etc., in the MRC and MCA groups. Meanwhile, the expression of proteins related to fatty acid metabolism, the PPAR signaling pathway, valine, leucine, and isoleucine degradation, and butanoate metabolism were upregulated, being stimulated by solid feed. In contrast, the proteins associated with carbohydrate digestion and absorption and glycosaminoglycan degradation were downregulated. In addition, the protein expression of enzymes involved in ketone body synthesis in the rumen was generally activated, which was caused by solid feed. In summary, solid feed promoted the development of rumen epithelium by changing the expression of proteins related to fatty acid metabolism, energy synthesis, and signal transduction. The ketone body synthesis pathway might be the most important activated pathway, and provides energy for rumen development.
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Affiliation(s)
- Yimin Zhuang
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaokang Lv
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Kai Cui
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jianmin Chai
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, College of Life Science and Engineering, Foshan University, Foshan 528225, China
- Division of Agriculture, Department of Animal Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Naifeng Zhang
- Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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20
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Guo X, Li B, Wen C, Zhang F, Xiang X, Nie L, Chen J, Mao L. TREM2 promotes cholesterol uptake and foam cell formation in atherosclerosis. Cell Mol Life Sci 2023; 80:137. [PMID: 37133566 PMCID: PMC11071710 DOI: 10.1007/s00018-023-04786-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/09/2023] [Accepted: 04/24/2023] [Indexed: 05/04/2023]
Abstract
Disordered lipid accumulation in the arterial wall is a hallmark of atherosclerosis. Previous studies found that the expression of triggering receptor expressed on myeloid cells 2 (TREM2), a transmembrane receptor of the immunoglobulin family, is increased in mouse atherosclerotic aortic plaques. However, it remains unknown whether TREM2 plays a role in atherosclerosis. Here we investigated the role of TREM2 in atherosclerosis using ApoE knockout (ApoE-/-) mouse models, primary vascular smooth muscle cells (SMCs), and bone marrow-derived macrophages (BMDMs). In ApoE-/- mice, the density of TREM2-positive foam cells in aortic plaques increased in a time-dependent manner after the mice were fed a high-fat diet (HFD). Compared with ApoE-/- mice, the Trem2-/-/ApoE-/- double-knockout mice showed significantly reduced atherosclerotic lesion size, foam cell number, and lipid burden degree in plaques after HFD feeding. Overexpression of TREM2 in cultured vascular SMCs and macrophages exacerbates lipid influx and foam cell formation by upregulating the expression of the scavenger receptor CD36. Mechanistically, TREM2 inhibits the phosphorylation of p38 mitogen-activated protein kinase and peroxisome proliferator activated-receptor gamma (PPARγ), thereby increasing PPARγ nuclear transcriptional activity and subsequently promoting the transcription of CD36. Our results indicate that TREM2 exacerbates atherosclerosis development by promoting SMC- and macrophage-derived foam cell formation by regulating scavenger receptor CD36 expression. Thus, TREM2 may act as a novel therapeutic target for the treatment of atherosclerosis.
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Affiliation(s)
- Xiaoqing Guo
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Bowei Li
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Cheng Wen
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Feng Zhang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xuying Xiang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lei Nie
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jiaojiao Chen
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ling Mao
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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21
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Zhang T, Li H, Sun S, Zhou W, Zhang T, Yu Y, Wang Q, Wang M. Microfibrillar-associated protein 5 suppresses adipogenesis by inhibiting essential coactivator of PPARγ. Sci Rep 2023; 13:5589. [PMID: 37020143 PMCID: PMC10076305 DOI: 10.1038/s41598-023-32868-y] [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: 01/12/2023] [Accepted: 04/04/2023] [Indexed: 04/07/2023] Open
Abstract
Femoral head necrosis is responsible for severe pain and its incidence is increasing. Abnormal adipogenic differentiation and fat cell hypertrophy of bone marrow mesenchymal stem cells increase intramedullary cavity pressure, leading to osteonecrosis. By analyzing gene expression before and after adipogenic differentiation, we found that Microfibril-Associated Protein 5 (MFAP5) is significantly down-regulated in adipogenesis whilst the mechanism of MFAP5 in regulating the differentiation of bone marrow mesenchymal stem cells is unknown. The purpose of this study was to clarify the role of MAFP5 in adipogenesis and therefore provide a theoretical basis for future therapeutic options of osteonecrosis. By knockdown or overexpression of MFAP5 in C3H10 and 3T3-L1 cells, we found that MFAP5 was significantly down-regulated as a key regulator of adipogenic differentiation, and identified the underlying downstream molecular mechanism. MFAP5 directly bound to and inhibited the expression of Staphylococcal Nuclease And Tudor Domain Containing 1, an essential coactivator of PPARγ, exerting an important regulatory role in adipogenesis.
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Affiliation(s)
- Tianlong Zhang
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, No128. Ruili Road, Minhang District, Shanghai, 200240, China
- Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Haoran Li
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, No128. Ruili Road, Minhang District, Shanghai, 200240, China
- Department of Anatomy and Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Shiwei Sun
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, No128. Ruili Road, Minhang District, Shanghai, 200240, China
- Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Wuling Zhou
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, No128. Ruili Road, Minhang District, Shanghai, 200240, China
- Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Tieqi Zhang
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, No128. Ruili Road, Minhang District, Shanghai, 200240, China
- Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Yueming Yu
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, No128. Ruili Road, Minhang District, Shanghai, 200240, China
- Center of Community-Based Health Research, Fudan University, Shanghai, China
| | - Qiang Wang
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, No128. Ruili Road, Minhang District, Shanghai, 200240, China.
- Center of Community-Based Health Research, Fudan University, Shanghai, China.
| | - Minghai Wang
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, No128. Ruili Road, Minhang District, Shanghai, 200240, China.
- Center of Community-Based Health Research, Fudan University, Shanghai, China.
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22
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Zhou C, Zhu D, Zhou S, Wang H, Huang M. Screening differential circular RNA expression profiles and the potential role of hsa_circ_0085465 in liver cancer. J Cancer Res Ther 2023; 19:548-555. [PMID: 37470573 DOI: 10.4103/jcrt.jcrt_1868_20] [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] [Indexed: 07/21/2023]
Abstract
Aims This study aimed to screen the circular RNAs (circRNAs) that are differentially expressed between liver cancer and paired paracarcinoma tissues and then elucidate their role in cancer progression. Materials and Methods High-throughput sequencing of cancer and paired paracarcinoma tissues was followed by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses of the parental genes of the differentially expressed circRNAs, which were also verified via real-time quantitative polymerase chain reaction analysis of the tissues. In addition, the function of selected circRNAs was determined using 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4- sulfophenyl)-2H-tetrazolium (MTS) and transwell assays. Results Total 218 and 121 circRNAs were differentially upregulated and downregulated, respectively; these were mainly enriched with GO and KEGG terms related to biological functions. From five representatives of the differentially expressed circRNAs, we selected hsa_circ_0085465 for further analysis, discovering that its overexpression promoted the proliferation, migration, and invasion of 97 L cells. Conclusion Taken together, our results suggest that hsa_circ_0085465 is relevant to liver cancer progression.
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Affiliation(s)
- Churen Zhou
- Department of Interventional Radiology Key Laboratory of Liver Disease Research, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Duo Zhu
- Department of Interventional Radiology Key Laboratory of Liver Disease Research, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Sibin Zhou
- Department of Interventional Radiology Key Laboratory of Liver Disease Research, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Haofan Wang
- Department of Interventional Radiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Mingsheng Huang
- Department of Interventional Radiology Key Laboratory of Liver Disease Research, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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23
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Osteoprotegerin deficiency aggravates methionine-choline-deficient diet-induced nonalcoholic steatohepatitis in mice. Sci Rep 2023; 13:3194. [PMID: 36823220 PMCID: PMC9950492 DOI: 10.1038/s41598-023-30001-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 02/14/2023] [Indexed: 02/25/2023] Open
Abstract
Clinical studies have shown that osteoprotegerin (OPG) is reduced in patients with nonalcoholic steatohepatitis (NASH), but the underlying mechanisms are unclear. The current study focuses on the role of OPG in the NASH pathogenesis. OPG knockout mice and wild-type control mice fed a methionine choline-deficient diet (MCD) for 4 weeks resulted in an animal model of NASH. Measurement of triglycerides (TG) in serum and liver to assess steatosis. Hematoxylin eosin (HE), Sirius Red and Masson staining were used to assess the liver damage. Transcriptome sequencing analysis, qPCR and western blot were to analyze changes in lipid metabolism and inflammation-related indicators in the liver. In vivo knockout of OPG resulted in a reduction of TG levels in the liver and a significant increase in serum ALT and AST. The expression of inflammatory factors and fibrosis genes was significantly upregulated in the livers of OPG knockout mice. Transcriptome sequencing analysis showed that OPG knockout significantly enhanced MCD diet-induced activation of the mitogen-activated protein kinase (MAPK) signaling pathway. Mechanistically, OPG may inhibit MAPK signaling pathway activity by upregulating the expression of dual specificity phosphatase 14 (DUSP14), thereby reducing inflammatory injury. OPG could regulate the activity of the MAPK signaling pathway via DUSP14, thus regulating the expression of some inflammatory factors in NASH, it may be a promising target for the treatment of NASH.
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24
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Zhao M, Ma L, Honda T, Kato A, Ohshiro T, Yokoyama S, Yamamoto K, Ito T, Imai N, Ishizu Y, Nakamura M, Kawashima H, Tsuji NM, Ishigami M, Fujishiro M. Astaxanthin Attenuates Nonalcoholic Steatohepatitis with Downregulation of Osteoprotegerin in Ovariectomized Mice Fed Choline-Deficient High-Fat Diet. Dig Dis Sci 2023; 68:155-163. [PMID: 35397697 DOI: 10.1007/s10620-022-07489-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/14/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Postmenopausal estrogen decline increases the risk of developing nonalcoholic steatohepatitis (NASH), and it might accelerate progression to cirrhosis and hepatocellular carcinoma. AIMS This study aimed to investigate a novel therapy for postmenopausal women who are diagnosed with NASH. METHODS Seven-week-old female C57BL/6 J mice were divided into three experimental groups as follows: (1) sham operation (SHAM group), (2) ovariectomy (OVX group), and (3) ovariectomy + 0.02% astaxanthin (OVX + ASTX group). These three groups of mice were fed a choline-deficient high-fat (CDHF) diet for 8 weeks. Blood serum and liver tissues were collected to examine liver injury, histological changes, and hepatic genes associated with NASH. An in vitro study was performed with the hepatic stellate cell line LX-2. RESULTS The administration of ASTX significantly improved pathological NASH with suppressed steatosis, inflammation, and fibrosis, in comparison with those in the OVX-induced estrogen deficiency group. As a result, liver injury was also attenuated with reduced levels of alanine aminotransferase and aspartate transaminase. In addition, our study found that ASTX supplementation decreased hepatic osteoprotegerin (OPG) in vivo, a possible factor that contributes to NASH development. In vitro, this study further confirmed that ASTX has an inhibitory effect on the secretion of OPG in LX-2 human hepatic stellate cells. CONCLUSIONS Our findings suggest that ASTX alleviates CDHF-OVX-induced pathohistological NASH with downregulated OPG, possibly via suppression of the transforming growth factor beta pathway. ASTX could has promise for use in postmenopausal women diagnosed with NASH.
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Affiliation(s)
- Meng Zhao
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Lingyun Ma
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Takashi Honda
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan.
| | - Asuka Kato
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan.,ITOCHU Collaborative Research-Molecular Targeted Cancer Treatment for Next Generation, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Taichi Ohshiro
- ITOCHU Collaborative Research-Molecular Targeted Cancer Treatment for Next Generation, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Shinya Yokoyama
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Kenta Yamamoto
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Takanori Ito
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Norihiro Imai
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Yoji Ishizu
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Masanao Nakamura
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Hiroki Kawashima
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Noriko M Tsuji
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan.,Division of Immune Homeostasis, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan.,Department of Food Science, Jumonji University, Saitama, Japan
| | - Masatoshi Ishigami
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Mitsuhiro Fujishiro
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, 466-8550, Japan.,Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
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25
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Yang Z, Huang X, Zhang J, You K, Xiong Y, Fang J, Getachew A, Cheng Z, Yu X, Wang Y, Wu F, Wang N, Feng S, Lin X, Yang F, Chen Y, Wei H, Li YX. Hepatic DKK1-driven steatosis is CD36 dependent. Life Sci Alliance 2023; 6:e202201665. [PMID: 36410795 PMCID: PMC9679335 DOI: 10.26508/lsa.202201665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 10/27/2022] [Accepted: 10/27/2022] [Indexed: 11/22/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is prevalent worldwide; about 25% of NAFLD silently progress into steatohepatitis, in which some of them may develop into fibrosis, cirrhosis and liver failure. However, few drugs are available for NAFLD, partly because of an incomplete understanding of its pathogenic mechanisms. Here, using in vivo and in vitro gain- and loss-of-function approaches, we identified up-regulated DKK1 plays a pivotal role in high-fat diet-induced NAFLD and its progression. Mechanistic analysis reveals that DKK1 enhances the capacity of hepatocytes to uptake fatty acids through the ERK-PPARγ-CD36 axis. Moreover, DKK1 increased insulin resistance by activating the JNK signaling, which in turn exacerbates disorders of hepatic lipid metabolism. Our finding suggests that DKK1 may be a potential therapeutic and diagnosis candidate for NAFLD and metabolic disorder progression.
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Affiliation(s)
- Zhen Yang
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xinping Huang
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jiaye Zhang
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Kai You
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Yue Xiong
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Ji Fang
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Anteneh Getachew
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Ziqi Cheng
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaorui Yu
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Yan Wang
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Feima Wu
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Ning Wang
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Shufen Feng
- Department of Gastroenterology, First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Xianhua Lin
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Fan Yang
- Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, China
| | - Yan Chen
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Hongcheng Wei
- Department of Gastroenterology, First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Yin-Xiong Li
- Center for Health Research, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
- Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Guangdong Provincial Key Laboratory of Biocomputing, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- State Key Laboratory of Respiratory Disease, Guangzhou, China
- China-New Zealand Joint Laboratory on Biomedicine and Health, Guangzhou, China
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26
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Differential Expression Analysis of tRNA-Derived Small RNAs from Subcutaneous Adipose Tissue of Obese and Lean Pigs. Animals (Basel) 2022; 12:ani12243561. [PMID: 36552481 PMCID: PMC9774726 DOI: 10.3390/ani12243561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Epigenetic factors, including non-coding RNA regulation, play a vital role in the development of obesity and have been well researched. Transfer RNA-derived small RNA (tsRNA) is a class of non-coding RNA proven to be involved in various aspects of mammalian biology. Here we take pigs as a model for obesity research and use tsRNA-seq to investigate the difference in tsRNA expression in the subcutaneous adipose tissue of obese and lean pigs to elucidate the role of tsRNA in obesity development. A total of 482 tsRNAs were identified in pig adipose tissue, of which 123 were significantly differentially accumulated tsRNAs compared with the control group. The tRF-5c was the main type of these tsRNAs. The largest number of tsRNAs produced was the Gly-carrying tRNA, which produced 81 tsRNAs. Functional enrichment analysis revealed that differential tsRNAs indirectly participated in MAPK, AMPK, insulin resistance, the TNF signaling pathway, adipocytokine signaling pathway, and other signaling pathways by interacting with target genes. These are involved in bioenergetic metabolic regulatory processes, suggesting that tsRNAs may influence these pathways to mediate the regulation of energy metabolism in porcine adipocytes to promote lipid deposition, thus contributing to obesity. Our findings suggest a potential function of tsRNA in regulating obesity development.
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Zhang L, Zhang H, Gu J, Xu W, Yuan N, Sun J, Li H. Glabridin inhibits liver fibrosis and hepatic stellate cells activation through suppression of inflammation and oxidative stress by activating PPARγ in carbon tetrachloride-treated mice. Int Immunopharmacol 2022; 113:109433. [DOI: 10.1016/j.intimp.2022.109433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 10/27/2022] [Accepted: 11/03/2022] [Indexed: 11/11/2022]
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28
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Effects of PPAR-γ and RXR-α on mouse meibomian gland epithelial cells during inflammation induced by latanoprost. Exp Eye Res 2022; 224:109251. [PMID: 36150542 DOI: 10.1016/j.exer.2022.109251] [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: 11/03/2021] [Revised: 08/30/2022] [Accepted: 09/13/2022] [Indexed: 11/21/2022]
Abstract
The purpose of this study is to investigate the effects of latanoprost on the secretion of cytokines and chemokines from meibomian gland epithelial cells, and to evaluate the modulation of peroxisome proliferator-activated receptor γ (PPAR-γ) and retinoid X receptor α (RXR-α) during latanoprost-induced inflammation. Mouse meibomian gland epithelial cells were cultured in proliferation and differentiation medium, respectively. Cells were exposed to latanoprost, rosiglitazone (PPAR-γ agonist), or LG100268 (RXR-α agonist), respectively. The expression of IL-6, IL-1β, TNF-α, MMP-9, MCP-1, and CCL-5 were detected by real-time PCR and ELISA. The effect of latanoprost, rosiglitazone, LG100268, and inflammatory cytokines on the differentiation of meibocyte were evaluated by related gene expression and lipid staining. The expression of Keratin-1, 6, 17 protein was detected by western immunoblotting. The results showed that the above cytokines could be induced by latanoprost in meibomian gland epithelial cells. LG100268 and rosiglitazone could inhibit the production of IL-6 and TNF-α induced by latanoprost, respectively. Latanoprost suppressed the expression of differentiation-related mRNA through a positive feedback loop by enhancement of COX-2 expression via FP receptor-activated ERK signaling. The expression of Keratin-17 was upregulated by rosiglitazone and suppressed by LG100268. The application of IL-6 and TNF-α showed negative effects on lipid accumulation in meibomian gland epithelial cells. These results demonstrated that latanoprost could induce inflammation and suppress differentiation of mouse meibomian gland epithelial cells. The activation of PPAR-γ and RXR-α showed an anti-inflammatory effect, showing a potential role to antagonize the effect of latanoprost eyedrops on meibomian gland epithelial cells.
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29
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Li Y, Huang X, Yang G, Xu K, Yin Y, Brecchia G, Yin J. CD36 favours fat sensing and transport to govern lipid metabolism. Prog Lipid Res 2022; 88:101193. [PMID: 36055468 DOI: 10.1016/j.plipres.2022.101193] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 06/26/2022] [Accepted: 08/26/2022] [Indexed: 11/24/2022]
Abstract
CD36, located on the cell membrane, transports fatty acids in response to dietary fat. It is a critical fatty acid sensor and regulator of lipid metabolism. The interaction between CD36 and lipid dysmetabolism and obesity has been identified in various models and human studies. Nevertheless, the mechanisms by which CD36 regulates lipid metabolism and the role of CD36 in metabolic diseases remain obscure. Here, we summarize the latest research on the role of membrane CD36 in fat metabolism, with emphasis on CD36-mediated fat sensing and transport. This review also critically discusses the factors affecting the regulation of CD36-mediated fat dysfunction. Finally, we review previous clinical evidence of CD36 in metabolic diseases and consider the path forward.
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Affiliation(s)
- Yunxia Li
- College of Animal Science and Technology, Hunan Agriculture University, Changsha 410128, China
| | - Xingguo Huang
- College of Animal Science and Technology, Hunan Agriculture University, Changsha 410128, China
| | - Guan Yang
- Department of Infectious Diseases and Public Health, City University of Hong Kong, Hong Kong SAR, China
| | - Kang Xu
- Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.
| | - Yulong Yin
- College of Animal Science and Technology, Hunan Agriculture University, Changsha 410128, China
| | - Gabriele Brecchia
- Department of Veterinary Medicine, University of Milano, Via dell'Università, 26900 Lodi, Italy
| | - Jie Yin
- College of Animal Science and Technology, Hunan Agriculture University, Changsha 410128, China.
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30
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Fatty acid translocase: a culprit of lipid metabolism dysfunction in disease. IMMUNOMETABOLISM 2022; 4:e00001. [PMID: 35991116 PMCID: PMC9380421 DOI: 10.1097/in9.0000000000000001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 05/09/2022] [Indexed: 11/25/2022]
Abstract
Dysregulation of lipid deposition into and mobilization from white adipose tissue (WAT) underlies various diseases. Long-chain fatty acids (LCFA) and cholesterol trafficking in and out of adipocytes is a process relying on transporters shuttling lipids from the plasma membrane (PM) to lipid droplets (LD). CD36 is the fatty acid translocase (FAT) that transports LCFA and cholesterol across the PM. Interactions of CD36 with proteins PHB1, ANX2, and CAV1 mediate intercellular lipid transport between adipocytes, hematopoietic, epithelial, and endothelial cells. Intracellularly, the FAT complex has been found to regulate LCFA trafficking between the PM and LD. This process is regulated by CD36 glycosylation and S-acylation, as well as by post-translational modifications of PHB1 and ANX2, which determine both protein–protein interactions and the cellular localization of the complex. Changes in extracellular and intracellular LCFA levels have been found to induce the post-translational modifications and the function of the FAT complex in lipid uptake and mobilization. The role of the CD36/PHB1/ANX2 complex may span beyond lipid trafficking. The requirement of PHB1 for mitochondrial oxidative metabolism in brown adipocytes has been revealed. Cancer cells which take advantage of lipids mobilized by adipocytes and oxidized in leukocytes are indirectly affected by the function of FAT complex in other tissues. The direct importance of CD36 interaction with PHB1/and ANX2 in cancer cells remains to be established. This review highlights the multifaceted roles of the FAT complex in systemic lipid trafficking and discuss it as a potential target in metabolic disease and cancer.
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31
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Sex hormone binding globulin as a potential drug candidate for liver-related metabolic disorders treatment. Biomed Pharmacother 2022; 153:113261. [PMID: 35738176 DOI: 10.1016/j.biopha.2022.113261] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/30/2022] [Accepted: 06/06/2022] [Indexed: 11/29/2022] Open
Abstract
Sex hormone binding globulin (SHBG) is a hepatokine that binds to circulating steroid hormones (testosterone, oestradiol) to regulate their concentration in the bloodstream. Recently SHBG was recognized as an essential biomarker for metabolic syndrome (MetS) and hepatic steatosis development. At the hepatic level, the production of SHBG is mainly regulated by sex steroids and thyroxine. Studies of various research groups, including ours, showed that SHBG could be considered a reliable marker of insulin resistance and, therefore, can serve as a predictor of type 2 diabetes. Moreover, increased levels of circulating pro-inflammatory mediators strongly correlate with lowered serum levels of SHBG. This review paper emphasizes the role of SHBG as a potential drug candidate in the course of various metabolic dysfunctions, including non-alcoholic fatty liver disease (NAFLD), obesity, diabetes mellitus and insulin resistance. The studies related to SHBG and its role in the course of metabolic disorders are very limited. Here, we have summarized the most current knowledge about SHBG and its mechanism of action, indicating a novel concept for its possible therapeutic application in the management framework of commonly occurring metabolic dysfunctions.
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32
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Bao X, Xu B, Yin S, Pan J, Nilsson PM, Nilsson J, Melander O, Orho-Melander M, Engström G. Proteomic Profiles of Body Mass Index and Waist-to-Hip Ratio and Their Role in Incidence of Diabetes. J Clin Endocrinol Metab 2022; 107:e2982-e2990. [PMID: 35294966 PMCID: PMC9202718 DOI: 10.1210/clinem/dgac140] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Indexed: 12/13/2022]
Abstract
CONTEXT It is unclear to what extent the plasma proteome of abdominal fat distribution differs from that of body mass index, and whether the differences have clinical implications. OBJECTIVE To evaluate the difference between the plasma proteomic profiles of body mass index (BMI) and waist-to-hip ratio (WHR), and then examine the identified BMI- or WHR-specific proteins in relation to incidence of diabetes. METHODS Data were obtained from the Malmö Diet and Cancer-Cardiovascular Cohort study in the general community. Participants (n = 4203) with no previous diabetes (aged 57.2 ± 6.0 years, 37.8% men) were included. Plasma proteins (n = 136) were measured by the Proseek proximity extension method. BMI- and WHR-specific proteins were identified at baseline using a 2-step iterative resampling approach to optimize internal replicability followed by β coefficient comparisons. The identified proteins were considered internally replicated and were then studied in relation to incident diabetes by Cox proportional hazards regression analysis. The main outcome measure was incident diabetes over a mean follow-up of 20.3 ± 5.9 years. RESULTS After excluding 21 overlapping proteins and proteins that did not show significantly different associations with BMI vs WHR, 10 internally replicated proteins were found to be specific to BMI, and 22 were found to be specific to WHR (false discovery rate-adjusted P < .05). Of the WHR-specific proteins, 18 remained associated with diabetes risk after multivariate adjustments, whereas none of the BMI-specific proteins showed associations with diabetes risk. CONCLUSION Abdominal fat distribution was associated with some unique characteristics of the plasma proteome that potentially could be related to its additional risk of diabetes beyond general obesity.
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Affiliation(s)
- Xue Bao
- Department of Cardiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Department of Clinical Sciences, Malmö, Lund University, Malmö, Sweden
| | - Biao Xu
- Correspondence: Biao Xu, Department of Cardiology, Drum Tower Hospital, Medical School of Nanjing University, No. 321 Zhongshan Road, Nanjing, 210008, China.
| | - Songjiang Yin
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jingxue Pan
- Department of Clinical Sciences, Malmö, Lund University, Malmö, Sweden
| | - Peter M Nilsson
- Department of Clinical Sciences, Malmö, Lund University, Malmö, Sweden
| | - Jan Nilsson
- Department of Clinical Sciences, Malmö, Lund University, Malmö, Sweden
| | - Olle Melander
- Department of Clinical Sciences, Malmö, Lund University, Malmö, Sweden
| | | | - Gunnar Engström
- Gunnar Engström, Department of Clinical Sciences, Lund University, CRC 60:13, Jan Waldenströms gata 35, 205 02 Malmö, Sweden.
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33
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Zhu L, Liao R, Huang J, Yan H, Xiao C, Yang Y, Wang H, Yang C. The miR-216/miR-217 Cluster Regulates Lipid Metabolism in Laying Hens With Fatty Liver Syndrome via PPAR/SREBP Signaling Pathway. Front Vet Sci 2022; 9:913841. [PMID: 35711801 PMCID: PMC9195098 DOI: 10.3389/fvets.2022.913841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 04/27/2022] [Indexed: 12/14/2022] Open
Abstract
Fatty liver syndrome (FLS), a common metabolic disease in laying hens, caused by excessive hepatic fat deposition is a bottleneck in the poultry industry. However, no specific therapeutic methods have been developed. Evidence suggests that microRNAs (miRNAs) are essential for liver lipid metabolism and homeostasis, providing strong evidence for targeting miRNAs as a potential treatment option for liver diseases. However, the roles of miRNAs in the pathogenesis of FLS remain unclear. In present study, RNA-sequencing was performed to discern the expression patterns of miRNAs in normal and fatty livers of laying hens. In total, 12 dysregulated miRNAs (2 down-regulated and 10 up-regulated) were detected between the normal and fatty livers. Functional enrichment analysis showed the potential impacts of the dysregulated miRNAs on lipid metabolism. Notably, miR-216a/b and miR-217-5p, which belong to the miR-216/miR-217 cluster, were up-regulated in the sera and livers of FLS chickens, as well as free fatty acid (FFA)-induced LMH cells. Oil-red O staining revealed that up-regulation of the miR-216/miR-217 cluster induced lipid accumulation in FFA-induced LMH cells. Furthermore, the dual luciferase gene reporter assay and RT-qPCR analysis demonstrated that 3-hydroxyacyl-CoA dehydratase 2, F-box protein 8, and transmembrane 9 superfamily member 3 (TM9SF3) were directly targeted by miR-216a/b and miR-217-5p, respectively, and suppressed in the fatty livers of laying hens. Moreover, overexpression of the miR-216/miR-217 cluster or reduction in TM9SF3 levels led to activation of the proliferator-activated receptor/sterol regulatory-element binding protein (PPAR/SREBP) pathway. Overall, these results demonstrate that the miR-216/miR-217 cluster regulates lipid metabolism in laying hens with FLS, which should prove helpful in the development of new interventional strategies.
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Affiliation(s)
- Lihui Zhu
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai, China
- National Poultry Research Center for Engineering and Technology, Shanghai, China
| | - Rongrong Liao
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Jiwen Huang
- College of Animal Science and Technology, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Huaxiang Yan
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai, China
- National Poultry Research Center for Engineering and Technology, Shanghai, China
| | - Changfeng Xiao
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai, China
- National Poultry Research Center for Engineering and Technology, Shanghai, China
| | - Yunzhou Yang
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Huiying Wang
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai, China
- *Correspondence: Huiying Wang
| | - Changsuo Yang
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai, China
- National Poultry Research Center for Engineering and Technology, Shanghai, China
- Changsuo Yang
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34
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Tsurudome Y, Akamine T, Horiguchi M, Wada Y, Fujimura A, Ushijima K. Potential mechanism of hepatic lipid accumulation during a long-term rest phase restricted feeding in mice. Chronobiol Int 2022; 39:1132-1143. [PMID: 35603436 DOI: 10.1080/07420528.2022.2077746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Eating during a rest phase disrupts the biological clock system and leads to obesity and metabolic diseases. Although a rest phase restricted feeding (RF) is reported to enhance hepatic lipid accumulation, the mechanism(s) of the phenomenon is still unknown. This study evaluated the potential involvement of the CD36-related transport of lipids into the liver in mice with the RF procedure. This study showed that hepatic lipid accumulation was more significant in the RF group compared with mice under an active phase restricted feeding (AF). The RF procedure also elevated the expression of CD36 mRNA and its protein on the cellular membrane throughout the day. The transcription factor profiling array revealed that the RF activated the proliferator-activated receptor-γ (PPARγ), one of the CD36 transcript enhancers. In the liver of RF mice, the expression of miR-27b-3p, which is known to interfere with PPARγ gene expression, significantly decreased. These results suggest that the RF procedure inhibits the expression of miR-27b-3p in the liver and subsequently elevates PPARγ activity. Activated PPARγ might lead to CD36 upregulation, which, in turn, stimulates the transport of lipids into the liver.
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Affiliation(s)
- Yuya Tsurudome
- Division of Pharmaceutics, Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University, Yamaguchi, Japan
| | - Takahiro Akamine
- Department of Pharmacology, Faculty of Medicine, Oita University, Oita, Japan
| | - Michiko Horiguchi
- Division of Pharmaceutics, Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University, Yamaguchi, Japan
| | - Yukiyo Wada
- Division of Pharmaceutics, Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University, Yamaguchi, Japan
| | - Akio Fujimura
- Division of Pharmaceutics, Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University, Yamaguchi, Japan.,Division of Clinical Pharmacology, Department of Pharmacology, Jichi Medical University, Tochigi, Japan
| | - Kentaro Ushijima
- Division of Pharmaceutics, Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University, Yamaguchi, Japan.,Division of Clinical Pharmacology, Department of Pharmacology, Jichi Medical University, Tochigi, Japan
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35
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Zhang H, Li Y, Zhang C, Huang K, Zhao J, Le S, Jiang L, Liu H, Yang P, Xiao X, Yu J, Wu J, Ye P, Xia J. B-cell lymphoma 6 alleviates nonalcoholic fatty liver disease in mice through suppression of fatty acid transporter CD36. Cell Death Dis 2022; 13:359. [PMID: 35436984 PMCID: PMC9016081 DOI: 10.1038/s41419-022-04812-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 03/22/2022] [Accepted: 03/30/2022] [Indexed: 02/06/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is an ubiquitous disease that exists across a wide spectrum ranging from steatosis, steatohepatitis, advanced fibrosis, and liver cirrhosis. Hallmarks of NAFLD are lipid accumulation, insulin resistance, and chronic low-grade inflammation. However, there currently are no medications approved for NAFLD. B-cell lymphoma 6 (BCL6) is a transcriptional inhibitor that is vital for germinal center B-cell formation. Our study identified BCL6 as a critical modulator of hepatic lipid metabolism and appears to contribute to the initiation and progression of NAFLD. In our research, we induced hepatic BCL6 overexpression using adeno-associated virus (AAV), as well as conditional liver-specific BCL6 knockout mice (BCL6-CKO). With these models, we noted that BCL6 overexpression improved insulin resistance and hepatic steatosis in mice models maintained on a HFD diet. Conversely, these parameters worsened in the livers of mice with downregulated BCL6 levels. Mechanistically, the translocase fatty acid CD36 was determined to be a transcriptional target of BCL6 that influences its role in hepatic steatosis. BCL6 bound directly to the CD36 promoter region, restraining CD36 transcription under physiological conditions. We conclude that the hepatocyte BCL6 inhibits the NAFLD progression in mice, including deranged lipid accumulation and glucose metabolism, through a CD36-dependent manner. These results indicate that BCL6 may potentially be targeted in NAFLD treatment.
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Affiliation(s)
- Hao Zhang
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yue Li
- Department of Cardiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chao Zhang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kun Huang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Zhao
- Department of Cardiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sheng Le
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lang Jiang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hao Liu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Peiwen Yang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyue Xiao
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jizhang Yu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jie Wu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Ping Ye
- Department of Cardiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Jiahong Xia
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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36
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Qiu S, Liang Z, Wu Q, Wang M, Yang M, Chen C, Zheng H, Zhu Z, Li L, Yang G. Hepatic lipid accumulation induced by a high-fat diet is regulated by Nrf2 through multiple pathways. FASEB J 2022; 36:e22280. [PMID: 35394671 DOI: 10.1096/fj.202101456r] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 03/01/2022] [Accepted: 03/15/2022] [Indexed: 11/11/2022]
Abstract
Nuclear factor erythroid 2-related factor 2 (Nrf2) is reportedly involved in hepatic lipid metabolism, but the results are contradictory, and the underlying mechanism remains unclear. Here, we focused on elucidating the effects of Nrf2 on hepatic adipogenesis and on determining the possible underlying mechanism. We established a non-alcoholic fatty liver disease (NAFLD) model in a high-fat diet (HFD)-fed Nrf2 knockout (Nrf2 KO) mice; further, a cell model of lipid accumulation was established using mouse primary hepatocytes (MPHs) treated with free fatty acids (FAs). Using these models, we investigated the relationship between Nrf2 and autophagy and its role in the development of NAFLD. We observed that Nrf2 expression levels were upregulated in patients with NAFLD and diet-induced obese mice. Nrf2 deficiency led to hepatic lipid accumulation in vivo and in vitro, in addition to, promoting lipogenesis mainly by increasing SREBP-1c activity. Moreover, Nrf2 deficiency attenuated autophagic flux and inhibited the fusion of autophagosomes and lysosomes in vivo and in vitro. Decreased autophagy caused reduced lipolysis in the liver. Importantly, chromatin immunoprecipitation-qPCR (ChIP-qPCR) and dual-luciferase assay results proved that Nrf2 bound to the LAMP1 promoter and regulated its transcriptional activity. Accordingly, we report that Nrf2-LAMP1 interaction plays an indispensable role in Nrf2-regulated hepatosteatosis. Our data collectively confirm that Nrf2 deficiency promotes hepatosteatosis by enhancing SREBP-1c activity and attenuating autophagy. Our findings provide a novel multi-pathway effect of Nrf2 on lipid metabolism in the liver. We believe that multi-target intervention of Nrf2 is a novel strategy for the treatment of NAFLD.
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Affiliation(s)
- Sheng Qiu
- Department of Endocrinology, The 2nd Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Zerong Liang
- Department of Endocrinology, The 2nd Affiliated Hospital, Chongqing Medical University, Chongqing, China.,Key Laboratory of Diagnostic Medicine (Ministry of Education), Department of Clinical Biochemistry, College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Qinan Wu
- Endocrinology Department, Dazu Hospital of Chongqing Medical University, The People's Hospital of Dazu, Chongqing, China
| | - Miao Wang
- Department of Endocrinology, The 2nd Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Mengliu Yang
- Department of Endocrinology, The 2nd Affiliated Hospital, Chongqing Medical University, Chongqing, China.,School of Biomedical Sciences, University of Queensland, Brisbane, Queensland, Australia
| | - Chen Chen
- School of Biomedical Sciences, University of Queensland, Brisbane, Queensland, Australia
| | - Hongting Zheng
- Department of Endocrinology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Zhiming Zhu
- Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, China
| | - Ling Li
- Key Laboratory of Diagnostic Medicine (Ministry of Education), Department of Clinical Biochemistry, College of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Gangyi Yang
- Department of Endocrinology, The 2nd Affiliated Hospital, Chongqing Medical University, Chongqing, China
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CTRP7 Is a Biomarker Related to Insulin Resistance and Oxidative Stress: Cross-Sectional and Intervention Studies In Vivo and In Vitro. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6877609. [PMID: 35368863 PMCID: PMC8967592 DOI: 10.1155/2022/6877609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 02/17/2022] [Indexed: 12/17/2022]
Abstract
Objective CTRP7 is a cytokine that is known to be associated with obesity. However, its relationship with insulin resistance (IR) and metabolic diseases remains unknown. The aim of this study is to investigate the relationship between CTRP7 and IR under in vivo and in vitro conditions. Methods CTRP7 expression in mice and hepatocytes was determined using RT-qPCR and western blotting. Circulating CTRP7 concentrations were measured with an ELISA kit. EHC, OGTT, lipid-infusion, physical activity, and cold-stimulation experiments were performed in humans and mice. SOD, GSH, and MDA were measured by commercial kits. ROS levels were detected using dichlorofluorescein diacetate. Results The expression levels of CTRP7 protein in the liver and fat of ob/ob and db/db mice were higher than that of WT mice. Individuals with IGT, T2DM, and obesity had higher circulating CTRP7 levels. CTRP7 levels were associated with HOMA-IR, obesity, and other metabolic parameters. During OGTT, serum CTRP7 levels gradually decreased, while CTRP7 levels significantly increased during EHC in response to hyperinsulinemia in healthy individuals without IR. In addition, lipid infusion-induced IR further increased serum CTRP7 levels in healthy adults. Physical activity increased serum CTRP7 levels in healthy individuals and CTRP7 protein expression in iWAT and skeletal muscle in mice. Under in vitro conditions, the expression of the CTRP7 protein was inhibited in a glucose concentration-dependent manner but was promoted by FFAs and insulin stimulation in hepatocytes. Furthermore, CTRP7 overexpression facilitated oxidative stress and suppressed the phosphorylation of insulin signaling molecules in hepatocytes. Conclusions Our evidence shows that CTRP7 could be a useful biomarker and potential treatment target in IR and metabolic disorders.
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Habibi J, Chen D, Hulse JL, Whaley-Connell A, Sowers JR, Jia G. Targeting mineralocorticoid receptors in diet-induced hepatic steatosis and insulin resistance. Am J Physiol Regul Integr Comp Physiol 2022; 322:R253-R262. [PMID: 35107025 PMCID: PMC8896998 DOI: 10.1152/ajpregu.00316.2021] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mineralocorticoid receptor (MR) activation plays an important role in hepatic insulin resistance. However, the precise mechanisms by which MR activation promotes hepatic insulin resistance remains unclear. Therefore, we sought to investigate the roles and mechanisms by which MR activation promotes Western diet (WD)-induced hepatic steatosis and insulin resistance. Six-week-old C57BL6J mice were fed either mouse chow or a WD, high in saturated fat and refined carbohydrates, with or without the MR antagonist spironolactone (1 mg/kg/day) for 16 wk. WD feeding resulted in systemic insulin resistance at 8 and 16 wk. WD also induced impaired hepatic insulin metabolic signaling via phosphoinositide 3-kinases/protein kinase B pathways, which was associated with increased hepatic CD36, fatty acid transport proteins, fatty acid-binding protein-1, and hepatic steatosis. Meanwhile, consumption of a WD-induced hepatic mitochondria dysfunction, oxidative stress, and inflammatory responses. These abnormalities occurring in response to WD feeding were blunted with spironolactone treatment. Moreover, spironolactone promoted white adipose tissue browning and hepatic glucose transporter type 4 expression. These data suggest that enhanced hepatic MR signaling mediates diet-induced hepatic steatosis and dysregulation of adipose tissue browning, and subsequent hepatic mitochondria dysfunction, oxidative stress, inflammation, as well as hepatic insulin resistance.
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Affiliation(s)
- Javad Habibi
- 1Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri,3Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri
| | - Dongqing Chen
- 1Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri,3Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri
| | - Jack L. Hulse
- 1Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri,3Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri
| | - Adam Whaley-Connell
- 1Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri,2Division of Nephrology and Hypertension, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri,3Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri
| | - James R. Sowers
- 1Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri,2Division of Nephrology and Hypertension, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri,3Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri,4Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri,5Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, Missouri
| | - Guanghong Jia
- 1Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri,3Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri,4Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri
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Mahmoudi A, Butler AE, Jamialahmadi T, Sahebkar A. The role of exosomal miRNA in nonalcoholic fatty liver disease. J Cell Physiol 2022; 237:2078-2094. [PMID: 35137416 DOI: 10.1002/jcp.30699] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 12/14/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) impacts more than one-third of the population and is linked with other metabolic diseases. The term encompasses a wide spectrum of diseases, from modest steatosis to nonalcoholic steatohepatitis, fibrosis and, ultimately, cirrhosis with the potential for development of hepatocellular carcinoma. Currently, available methods for diagnosing NAFLD are invasive or lack accuracy, and monitoring to determine response to therapeutic interventions is challenging. Exosomes are nano-scaled extracellular vesicles that are secreted by a variety of cells. They convey proteins, mRNA, miRNA, and other bioactive molecules between cells and are involved in an extensive range of biological processes, particularly cell-cell communication. Several reports suggest that exosomes mediate miRNAs and, thus, they have potential clinical utility for diagnosis, prognosis, and therapeutics in liver diseases. In view of the vital role of exosomal microRNA in disease, we here synthesized current knowledge about the biogenesis of exosomal miRNA and exosome-mediated microRNA transfer. We then discuss the potential of exosomal miRNA in diagnosis and therapeutics of NAFLD.
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Affiliation(s)
- Ali Mahmoudi
- Department of Medical Biotechnology and Nanotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Tannaz Jamialahmadi
- Surgical Oncology Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,School of Medicine, The University of Western Australia, Perth, Australia.,Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Li X, Chen H, Yang H, Liu J, Li Y, Dang Y, Wang J, Wang L, Li J, Nie G. Study on the Potential Mechanism of Tonifying Kidney and Removing Dampness Formula in the Treatment of Postmenopausal Dyslipidemia Based on Network Pharmacology, Molecular Docking and Experimental Evidence. Front Endocrinol (Lausanne) 2022; 13:918469. [PMID: 35872979 PMCID: PMC9302042 DOI: 10.3389/fendo.2022.918469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/07/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Management of menopausal dyslipidemia is the main measure to reduce the incidence of cardiovascular disease in postmenopausal women. Tonifying Kidney and Removing Dampness Formula (TKRDF) is a traditional Chinese medicine (TCM) formula that ameliorates dyslipidemia in postmenopausal women. This study applied network pharmacology, molecular docking, and in vitro and in vitro experiments to investigate the underlying mechanism of TKRDF against postmenopausal dyslipidemia. METHODS Network pharmacology research was first conducted, and the active compounds and targets of TKRDF, as well as the targets of postmenopausal dyslipidemia, were extracted from public databases. Protein-protein interaction (PPI), Gene Ontology (GO), and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were used to identify the potential targets and signaling pathways of TKRDF in postmenopausal dyslipidemia. Molecular docking was then performed to evaluate the combination of active compounds with principal targets. Finally, an ovariectomized rat model was used for the in vivo experiment and alpha mouse liver 12 (AML12) cells treated with palmitic acid were used for the in vitro experiments to provide further evidence for the research. RESULTS Based on network pharmacology analysis, we obtained 78 active compounds from TKRDF that acted on 222 targets of postmenopausal dyslipidemia. The analysis results indicated that IL6, TNF, VEGFA, AKT1, MAPK3, MAPK1, PPARG and PIK3CA, etc., were the potentially key targets, and the PI3K/AKT signaling pathway was the possibly crucial pathway for TKRDF to treat postmenopausal dyslipidemia. Molecular docking suggested that the active compounds have good binding activity with the core targets. The in vivo and in vitro experiments demonstrated that TKRDF ameliorates postmenopausal dyslipidemia by regulating hormone levels, inhibiting inflammation, promoting angiogenesis and inhibiting lipid synthesis, which appear to be related to TKRDF's regulation of the ERK1/2 and PI3K/AKT signaling pathways. CONCLUSION This study clarified the active ingredients, potential targets, and molecular mechanisms of TKRDF for treating postmenopausal dyslipidemia. It also provided a feasible method to uncover the scientific basis and therapeutic mechanism for prescribing TCM in the treatment of diseases.
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Affiliation(s)
- Xuewen Li
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hongyan Chen
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hongyan Yang
- Department of Gynecology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jian Liu
- Department of Gynecology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yang Li
- Department of Gynecology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yue Dang
- College of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, China
| | - Jiajing Wang
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lei Wang
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jun Li
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- *Correspondence: Guangning Nie, ; Jun Li,
| | - Guangning Nie
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Gynecology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- *Correspondence: Guangning Nie, ; Jun Li,
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Fu Q, North PE, Ke X, Huang YW, Fritz KA, Majnik AV, Lane RH. Adverse Maternal Environment and Postweaning Western Diet Alter Hepatic CD36 Expression and Methylation Concurrently with Nonalcoholic Fatty Liver Disease in Mouse Offspring. J Nutr 2021; 151:3102-3112. [PMID: 34486661 PMCID: PMC8485909 DOI: 10.1093/jn/nxab249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/21/2021] [Accepted: 07/01/2021] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND The role of an adverse maternal environment (AME) in conjunction with a postweaning Western diet (WD) in the development of nonalcoholic fatty liver disease (NAFLD) in adult offspring has not been explored. Likewise, the molecular mechanisms associated with AME-induced NAFLD have not been studied. The fatty acid translocase or cluster of differentiation 36 (CD36) has been implicated to play a causal role in the pathogenesis of WD-induced steatosis. However, it is unknown if CD36 plays a role in AME-induced NAFLD. OBJECTIVE This study was designed to evaluate the isolated and additive impact of AME and postweaning WD on the expression and DNA methylation of hepatic Cd36 in association with the development of NAFLD in a novel mouse model. METHODS AME constituted maternal WD and maternal stress, whereas the control (Con) group had neither. Female C57BL/6J mice were fed a WD [40% fat energy, 29.1% sucrose energy, and 0.15% cholesterol (wt/wt)] 5 wk prior to pregnancy and throughout lactation. Non invasive variable stressors (random frequent cage changing, limited bedding, novel object, etc.) were applied to WD dams during the last third of pregnancy to produce an AME. Con dams consumed the control diet (CD) (10% fat energy, no sucrose or cholesterol) and were not exposed to stress. Male offspring were weaned onto either CD or WD, creating 4 experimental groups: Con-CD, Con-WD, AME-CD, and AME-WD, and evaluated for metabolic and molecular parameters at 120 d of age. RESULTS AME and postweaning WD independently and additively increased the development of hepatic steatosis in adult male offspring. AME and WD independently and additively upregulated hepatic CD36 protein and mRNA expression and hypomethylated promoters 2 and 3 of the Cd36 gene. CONCLUSIONS Using a mouse AME model together with postweaning WD, this study demonstrates a role for CD36 in AME-induced NAFLD in offspring and reveals 2 regions of environmentally induced epigenetic heterogeneity within Cd36.
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Affiliation(s)
- Qi Fu
- Department of Research Administration, Children's Mercy Hospital, Kansas City, MO, USA
| | - Paula E North
- Department of Pediatric Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Xingrao Ke
- Department of Research Administration, Children's Mercy Hospital, Kansas City, MO, USA
| | - Yi-Wen Huang
- Department of Obstetrics & Gynecology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Katie A Fritz
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA
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Ramesova A, Vesela B, Svandova E, Lesot H, Matalova E. Caspase-1 Inhibition Impacts the Formation of Chondrogenic Nodules, and the Expression of Markers Related to Osteogenic Differentiation and Lipid Metabolism. Int J Mol Sci 2021; 22:ijms22179576. [PMID: 34502478 PMCID: PMC8431148 DOI: 10.3390/ijms22179576] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/30/2021] [Accepted: 08/31/2021] [Indexed: 01/13/2023] Open
Abstract
Caspase-1, as the main pro-inflammatory cysteine protease, was investigated mostly with respect to inflammation-related processes. Interestingly, caspase-1 was identified as being involved in lipid metabolism, which is extremely important for the proper differentiation of chondrocytes. Based on a screening investigation, general caspase inhibition impacts the expression of Cd36 in chondrocytes, the fatty acid translocase with a significant impact on lipid metabolism. However, the engagement of individual caspases in the effect has not yet been identified. Therefore, the hypothesis that caspase-1 might be a candidate here appears challenging. The primary aim of this study thus was to find out whether the inhibition of caspase-1 activity would affect Cd36 expression in a chondrogenic micromass model. The expression of Pparg, a regulator Cd36, was examined as well. In the caspase-1 inhibited samples, both molecules were significantly downregulated. Notably, in the treated group, the formation of the chondrogenic nodules was apparently disrupted, and the subcellular deposition of lipids and polysaccharides showed an abnormal pattern. To further investigate this observation, the samples were subjected to an osteogenic PCR array containing selected markers related to cartilage/bone cell differentiation. Among affected molecules, Bmp7 and Gdf10 showed a significantly increased expression, while Itgam, Mmp9, Vdr, and Rankl decreased. Notably, Rankl is a key marker in bone remodeling/homeostasis and thus is a target in several treatment strategies, including a variety of fatty acids, and is balanced by its decoy receptor Opg (osteoprotegerin). To evaluate the effect of Cd36 downregulation on Rankl and Opg, Cd36 silencing was performed using micromass cultures. After Cd36 silencing, the expression of Rankl was downregulated and Opg upregulated, which was an inverse effect to caspase-1 inhibition (and Cd36 upregulation). These results demonstrate new functions of caspase-1 in chondrocyte differentiation and lipid metabolism-related pathways. The effect on the Rankl/Opg ratio, critical for bone maintenance and pathology, including osteoarthritis, is particularly important here as well.
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Affiliation(s)
- Alice Ramesova
- Department of Physiology, University of Veterinary Sciences Brno, 612 42 Brno, Czech Republic; (A.R.); (E.S.); (E.M.)
| | - Barbora Vesela
- Department of Physiology, University of Veterinary Sciences Brno, 612 42 Brno, Czech Republic; (A.R.); (E.S.); (E.M.)
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetics, Academy of Sciences, 602 00 Brno, Czech Republic;
- Correspondence:
| | - Eva Svandova
- Department of Physiology, University of Veterinary Sciences Brno, 612 42 Brno, Czech Republic; (A.R.); (E.S.); (E.M.)
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetics, Academy of Sciences, 602 00 Brno, Czech Republic;
| | - Herve Lesot
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetics, Academy of Sciences, 602 00 Brno, Czech Republic;
| | - Eva Matalova
- Department of Physiology, University of Veterinary Sciences Brno, 612 42 Brno, Czech Republic; (A.R.); (E.S.); (E.M.)
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetics, Academy of Sciences, 602 00 Brno, Czech Republic;
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Choi Y, Song MJ, Jung WJ, Jeong H, Park S, Yang B, Lee EC, Joo JS, Choi D, Koo SH, Kim EK, Nam KT, Kim HP. Liver-Specific Deletion of Mouse CTCF Leads to Hepatic Steatosis via Augmented PPARγ Signaling. Cell Mol Gastroenterol Hepatol 2021; 12:1761-1787. [PMID: 34358714 PMCID: PMC8551791 DOI: 10.1016/j.jcmgh.2021.07.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS The liver is the major organ for metabolizing lipids, and malfunction of the liver leads to various diseases. Nonalcoholic fatty liver disease is rapidly becoming a major health concern worldwide and is characterized by abnormal retention of excess lipids in the liver. CCCTC-binding factor (CTCF) is a highly conserved zinc finger protein that regulates higher-order chromatin organization and is involved in various gene regulation processes. Here, we sought to determine the physiological role of CTCF in hepatic lipid metabolism. METHODS We generated liver-specific, CTCF-ablated and/or CD36 whole-body knockout mice. Overexpression or knockdown of peroxisome proliferator-activated receptor (PPAR)γ in the liver was achieved using adenovirus. Mice were examined for development of hepatic steatosis and inflammation. RNA sequencing was performed to identify genes affected by CTCF depletion. Genome-wide occupancy of H3K27 acetylation, PPARγ, and CTCF were analyzed by chromatin immunoprecipitation sequencing. Genome-wide chromatin interactions were analyzed by in situ Hi-C. RESULTS Liver-specific, CTCF-deficient mice developed hepatic steatosis and inflammation when fed a standard chow diet. Global analysis of the transcriptome and enhancer landscape revealed that CTCF-depleted liver showed enhanced accumulation of PPARγ in the nucleus, which leads to increased expression of its downstream target genes, including fat storage-related gene CD36, which is involved in the lipid metabolic process. Hepatic steatosis developed in liver-specific, CTCF-deficient mice was ameliorated by repression of PPARγ via pharmacologic blockade or adenovirus-mediated knockdown, but hardly rescued by additional knockout of CD36. CONCLUSIONS Our data indicate that liver-specific deletion of CTCF leads to hepatosteatosis through augmented PPARγ DNA-binding activity, which up-regulates its downstream target genes associated with the lipid metabolic process.
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Affiliation(s)
- Yeeun Choi
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Seoul, Korea; Brain Korea 21 Plus Project for Medical Science, Seoul, Korea
| | - Min-Ji Song
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Seoul, Korea
| | - Woong-Jae Jung
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Seoul, Korea; Department of Bioinformatics, Graduate School of Soongsil University, Seoul, Korea
| | - Haengdueng Jeong
- Brain Korea 21 Plus Project for Medical Science, Seoul, Korea; Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Seokjae Park
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea; Neurometabolomics Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea
| | - Bobae Yang
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Seoul, Korea; Brain Korea 21 Plus Project for Medical Science, Seoul, Korea
| | - Eun-Chong Lee
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Seoul, Korea; Brain Korea 21 Plus Project for Medical Science, Seoul, Korea
| | - Jung-Sik Joo
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Seoul, Korea; Brain Korea 21 Plus Project for Medical Science, Seoul, Korea
| | - Dahee Choi
- Division of Life Sciences, Korea University, Seoul, Korea
| | - Seung-Hoi Koo
- Division of Life Sciences, Korea University, Seoul, Korea
| | - Eun-Kyoung Kim
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea; Neurometabolomics Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea
| | - Ki Taek Nam
- Brain Korea 21 Plus Project for Medical Science, Seoul, Korea; Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Hyoung-Pyo Kim
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Seoul, Korea; Brain Korea 21 Plus Project for Medical Science, Seoul, Korea.
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Huang C, Liu Q, Tang Q, Jing X, Wu T, Zhang J, Zhang G, Zhou J, Zhang Z, Zhao Y, Huang H, Xia Y, Yan J, Xiao J, Li Y, He J. Hepatocyte-specific deletion of Nlrp6 in mice exacerbates the development of non-alcoholic steatohepatitis. Free Radic Biol Med 2021; 169:110-121. [PMID: 33857628 DOI: 10.1016/j.freeradbiomed.2021.04.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Previous studies have established that deficiency in Nucleotide-binding and oligomerization domain (NOD)-like receptor family pyrin domain containing 6 (Nlrp6) changes the configuration of the gut microbiota, which leads to hepatic steatosis. Here, we aimed to determine the hepatic function of Nlrp6 in lipid metabolism and inflammation and its role in the development of non-alcoholic steatohepatitis (NASH). METHODS Nlrp6Loxp/Loxp and hepatocyte-specific Nlrp6-knockout mice were fed a high-fat diet (HFD) or methionine-choline deficient (MCD) diet to induce fatty liver or steatohepatitis, respectively. Primary hepatocytes were isolated to further explore the underlying mechanisms in vitro. In addition, we used adenovirus to overexpress Nlrp6 in ob/ob mice to demonstrate its role in NASH. RESULTS Hepatic Nlrp6 expression was downregulated in NASH patients and in obese mice. Hepatocyte-specific Nlrp6 deficiency promoted HFD- or MCD diet-induced lipid accumulation and inflammation, whereas Nlrp6 overexpression in ob/ob mice had beneficial effects. In vitro studies demonstrated that knockdown of Nlrp6 aggravated hepatic steatosis and inflammation in hepatocytes, but its overexpression markedly attenuated these abnormalities. Moreover, both in vitro and in vivo study demonstrated that Nlrp6 inhibited Cd36-mediated lipid uptake. Nlrp6 deficiency-enhanced fatty acid uptake was blocked by a Cd36 inhibitor in hepatocytes. Nlrp6 ablation increased the expression of proinflammatory cytokines, likely as a result of increased NF-κB phosphorylation and activation. Mechanistically, Nlrp6 promoted the degradation of transforming growth factor-β-activated kinase 1 (TAK1)-binding protein 2/3 (TAB2/3) via a lysosomal-dependent pathway, which suppressed NF-κB activation. CONCLUSIONS Nlrp6 may play a key role in the pathological process of NASH by inhibiting Cd36 and NF-κB pathways. It may be a potential therapeutic target for NASH.
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Affiliation(s)
- Cuiyuan Huang
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Qinhui Liu
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Qin Tang
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Xiandan Jing
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Tong Wu
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jinhang Zhang
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Guorong Zhang
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jian Zhou
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Zijing Zhang
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Yingnan Zhao
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Hui Huang
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Yan Xia
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jiamin Yan
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jia Xiao
- Clinical Research Institute, First Affiliated Hospital of Jinan University, Guangzhou 510632, China.
| | - Yanping Li
- Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
| | - Jinhan He
- Department of Pharmacy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China; Laboratory of Clinical Pharmacy and Adverse Drug Reaction, National Clinical Research Center for Geriatrics,West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
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FGF21 facilitates autophagy in prostate cancer cells by inhibiting the PI3K-Akt-mTOR signaling pathway. Cell Death Dis 2021; 12:303. [PMID: 33753729 PMCID: PMC7985321 DOI: 10.1038/s41419-021-03588-w] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 02/27/2021] [Accepted: 03/03/2021] [Indexed: 12/11/2022]
Abstract
Fibroblast growth factor 21 (FGF21) plays an important role in regulating glucose and lipid metabolism, but its role in cancer is less well-studied. We aimed to investigate the action of FGF21 in the development of prostate cancer (PCa). Herein, we found that FGF21 expression was markedly downregulated in PCa tissues and cell lines. FGF21 inhibited the proliferation and clone formation of LNCaP cells (a PCa cell line) and promoted apoptosis. FGF21 also inhibited PCa cell migration and invasiveness. The Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses revealed that FGF21 was related to autophagy and the phosphatidylinositol 3-kinase–Akt kinase–mammalian target of rapamycin (PI3K–Akt–mTOR) pathway. Mechanistically, FGF21 promoted autophagy in LNCaP cells by inhibiting the PI3K–Akt–mTOR–70S6K pathway. In addition, FGF21 inhibited PCa tumorigenesis in vivo in nude mice. Altogether, our findings show that FGF21 inhibits PCa cell proliferation and promoted apoptosis in PCa cells through facilitated autophagy. Therefore, FGF21 might be a potential novel target in PCa therapy.
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Geng S, Qin L, He Y, Li X, Yang M, Li L, Liu D, Li Y, Niu D, Yang G. Effective and safe delivery of GLP-1AR and FGF-21 plasmids using amino-functionalized dual-mesoporous silica nanoparticles in vitro and in vivo. Biomaterials 2021; 271:120763. [PMID: 33780737 DOI: 10.1016/j.biomaterials.2021.120763] [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: 08/12/2020] [Revised: 03/05/2021] [Accepted: 03/13/2021] [Indexed: 10/21/2022]
Abstract
Nanomaterials have attracted increased attention because of their excellent drug-carrying capacity. However, these nanomaterials are rarely used in the treatment of metabolic diseases. Liraglutide, a glucagon-like peptide-1 receptor agonist, has been widely used in the treatment of type 2 diabetes mellitus (T2DM). Furthermore, fibroblast growth factor 21 (FGF-21) has been found to improve glucose metabolism and insulin resistance (IR). To investigate whether these two molecules have synergistic effects in vivo, we developed a novel drug delivery system using amino-functionalized and embedded dual-mesoporous silica nanoparticles (N-EDMSNs) to simultaneously carry liraglutide and FGF-21, and observed their biological effects. The resultant N-EDMSNs possessed unique hierarchical porous structures consisting of open large pores (>10 nm) and small mesopores (~2.5 nm) in the silica framework, highly positively charged surfaces and good disperisity in aqueous solution. We found that N-EDMSNs had a high loading capacity for exogenous genes and low toxicity to Hepa1-6 cells. Moreover, N-EDMSNs can simultaneously carry FGF-21 plasmids and liraglutide and successfully transfect them into Hepa1-6 cells. The transfection efficiency of N-EDMSNs was higher than that of Lipofectamine 2000 in vitro. In mice experiments, N-EDMSNs/pFGF21 treatment resulted in higher FGF-21 expression in the liver than pFGF21 treatment with hydrodynamic delivery. Compared with both pFGF21 and liraglutide, N-EDMSNs/pFGF21/Lira treatment significantly reduced the food intake, body weight, and blood glucose; increased the energy expenditure and improved hepatic IR in high-fat diet (HFD)-fed mice. Our results demonstrated that the biological effects of N-EDMSNs/pFGF21/Lira complexes were better than those of pFGF21 combined with liraglutide in vivo.
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Affiliation(s)
- Shan Geng
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Limei Qin
- Lab of Low-Dimensional Materials Chemistry, School of Materials Science AndEngineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yirui He
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Xinrun Li
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Mengliu Yang
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Ling Li
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Dongfang Liu
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China
| | - Yongsheng Li
- Lab of Low-Dimensional Materials Chemistry, School of Materials Science AndEngineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Dechao Niu
- Lab of Low-Dimensional Materials Chemistry, School of Materials Science AndEngineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Gangyi Yang
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China.
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Huang Y, Wang C, Tian X, Mao Y, Hou B, Sun Y, Gu X, Ma Z. Pioglitazone Attenuates Experimental Colitis-Associated Hyperalgesia through Improving the Intestinal Barrier Dysfunction. Inflammation 2021; 43:568-578. [PMID: 31989391 PMCID: PMC7170986 DOI: 10.1007/s10753-019-01138-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Impaired intestinal mucosal integrity during colitis involves the peroxisome proliferator-activated receptor-γ (PPARγ), an important anti-inflammatory factor in intestinal mucosa homoeostasis, which is a potential target in colitis. Recurrent chronic pain is a vital pathogenetic feature of colitis. Nevertheless, potential functions of PPARγ in the colitis-associated hyperalgesia remain unclear. This study aimed to investigate biological roles of pioglitazone in relieving colitis-associated pain hypersensitivity by a PPARγ tight junction protein-dependent mechanism during the course of dextran sodium sulfate (DSS)-induced intestinal inflammation. The DSS-induced colitis model was generated in C57BL/6 mice. Changes in colitis induced the injury of intestinal mucosal barrier and hyperalgesia after a 6-day treatment of pioglitazone (25 mg/kg, IP injection) were assessed through immunofluorescent, hematoxylin and eosin (H&E) staining, western blot analysis, and determination of paw withdrawal mechanical threshold. A significant reduction of paw withdrawal mechanical threshold occurred after DSS treatment. Follow-up data showed that systematic administration of PPARγ agonist pioglitazone ameliorated the DSS-induced colitis and the development of colitis-associated hyperalgesia by repairing the intestinal mucosal barrier. The tight junction proteins ZO-1 and Claudin-5 were upregulated by PPARγ signaling, which in turn promoted the improvement of intestinal barrier function. Moreover, pioglitazone inhibited phosphorylation of ERK and NF-κB in the colon and decreased the levels of inflammatory cytokines in both colon spine tissues. Furthermore, systemically pioglitazone treatment inhibited the activation of microglia and astrocytes, as well as DSS-induced phosphorylation of NR2B subunit in spinal cord, which was correspondingly consistent with the pain behavior. Pioglitazone ameliorates DSS-induced colitis and attenuates colitis-associated mechanical hyperalgesia, with improving integrity of the intestinal mucosal barrier by directly upregulating tight junction proteins. The PPARγ-tight junction protein signaling might be a potential therapeutic target for the treatment of colitis-associated chronic pain.
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Affiliation(s)
- Yulin Huang
- Department of Anaesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, Jiangsu province, China
| | - Chenchen Wang
- Department of Anaesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, Jiangsu province, China
| | - Xinyu Tian
- Department of Anaesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, Jiangsu province, China
| | - Yanting Mao
- Department of Anaesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, Jiangsu province, China
| | - Bailin Hou
- Department of Anaesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, Jiangsu province, China
| | - Yu'e Sun
- Department of Anaesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, Jiangsu province, China
| | - Xiaoping Gu
- Department of Anaesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, Jiangsu province, China.
| | - Zhengliang Ma
- Department of Anaesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, Jiangsu province, China.
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Tan X, Liu R, Zhang Y, Wang X, Wang J, Wang H, Zhao G, Zheng M, Wen J. Integrated analysis of the methylome and transcriptome of chickens with fatty liver hemorrhagic syndrome. BMC Genomics 2021; 22:8. [PMID: 33407101 PMCID: PMC7789526 DOI: 10.1186/s12864-020-07305-3] [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: 08/19/2020] [Accepted: 12/06/2020] [Indexed: 12/22/2022] Open
Abstract
Background DNA methylation, a biochemical modification of cytosine, has an important role in lipid metabolism. Fatty liver hemorrhagic syndrome (FLHS) is a serious disease and is tightly linked to lipid homeostasis. Herein, we compared the methylome and transcriptome of chickens with and without FLHS. Results We found genome-wide dysregulated DNA methylation pattern in which regions up- and down-stream of gene body were hypo-methylated in chickens with FLHS. A total of 4155 differentially methylated genes and 1389 differentially expressed genes were identified. Genes were focused when a negative relationship between mRNA expression and DNA methylation in promoter and gene body were detected. Based on pathway enrichment analysis, we found expression of genes related to lipogenesis and oxygenolysis (e.g., PPAR signaling pathway, fatty acid biosynthesis, and fatty acid elongation) to be up-regulated with associated down-regulated DNA methylation. In contrast, genes related to cellular junction and communication pathways (e.g., vascular smooth muscle contraction, phosphatidylinositol signaling system, and gap junction) were inhibited and with associated up-regulation of DNA methylation. Conclusions In the current study, we provide a genome-wide scale landscape of DNA methylation and gene expression. The hepatic hypo-methylation feature has been identified with FLHS chickens. By integrated analysis, the results strongly suggest that increased lipid accumulation and hepatocyte rupture are central pathways that are regulated by DNA methylation in chickens with FLHS. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-020-07305-3.
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Affiliation(s)
- Xiaodong Tan
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Ranran Liu
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yonghong Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.,College of Animal Science, Jilin University, Changchun, 130062, China
| | - Xicai Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jie Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Hailong Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Guiping Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Maiqing Zheng
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
| | - Jie Wen
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
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Tan X, Hu W, Yang S, Dai H, Xu S, Yang G, Li L, Tang S, Wang Y. Association of metabolic syndrome components with circulating levels of cytokine clusters in young women. Endocr Connect 2021; 10:66-75. [PMID: 33289689 PMCID: PMC7923046 DOI: 10.1530/ec-20-0569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 12/03/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND The purpose of this study was to investigate the relationship between circulating zinc α 2-glycoprotein (ZAG), irisin, betatrophin and adiponectin concentrations and metabolic syndrome (MetS) components and to analyze the effects of blood glucose and insulin on these cytokine concentrations in vivo. METHODS A total of 196 young women, including 78 healthy women and 118 women with MetS components, were recruited for this cross-sectional study. An oral glucose tolerance test and euglycemic-hyperinsulinemic clamp (EHC) were performed in healthy subjects and women with MetS components. An ELISA kit was used to measure serum ZAG, irisin, betatrophin, and adiponectin levels, and their relationship with the MetS components was analyzed. RESULTS In women with MetS components, circulating irisin and betatrophin levels were significantly higher than those in the healthy women ((207 (150-248) vs 178 (147-228); P < 0.05) for irisin; (0.51 (0.38-0.63) vs 0.38 (0.23-0.52); P < 0.001) for betatrophin), but circulating ZAG and adiponectin levels were significantly lower (39.8 (26.4-50.4) vs (46.7 (40.6-63.0); P < 0.001) for ZAG; (36.5 (22.0-47.6) vs 41.2 (35.7-54.7); P < 0.01) for adiponectin). FBG, WC, and triglyceride were significantly correlated with the circulating levels of these four cytokines (P < 0.001 or <0.05). All four cytokines were associated with MetS and its components. In response to increasing insulin levels, circulating ZAG concentrations were markedly increased in both healthy subjects and women with MetS components during the EHC. However, serum irisin, betatrophin, and adiponectin levels in both healthy subjects and women with MetS components were significantly reduced compared with baseline. CONCLUSION Serum ZAG, irisin, betatrophin and adiponectin were associated with MetS and might be biomarkers for screening MetS components.
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Affiliation(s)
- Xingrong Tan
- Department of Endocrinology, 9th People’s Hospital of Chongqing, Beibei City, Chongqong, China
| | - Wenjing Hu
- Chongqing Prevention and Treatment Hospital for Occupational Diseases, Chongqing, China
| | - Shan Yang
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Han Dai
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Shangcheng Xu
- Chongqing Prevention and Treatment Hospital for Occupational Diseases, Chongqing, China
| | - Gangyi Yang
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Ling Li
- Department of Endocrinology, 9th People’s Hospital of Chongqing, Beibei City, Chongqong, China
| | - Shiguo Tang
- Department of Endocrinology, 9th People’s Hospital of Chongqing, Beibei City, Chongqong, China
| | - Yi Wang
- Department of Endocrinology, 9th People’s Hospital of Chongqing, Beibei City, Chongqong, China
- Correspondence should be addressed to Y Wang:
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50
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Wang X, Ma Y, Yang LY, Zhao D. MicroRNA-20a-5p Ameliorates Non-alcoholic Fatty Liver Disease via Inhibiting the Expression of CD36. Front Cell Dev Biol 2020; 8:596329. [PMID: 33344451 PMCID: PMC7744458 DOI: 10.3389/fcell.2020.596329] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/03/2020] [Indexed: 12/21/2022] Open
Abstract
Fatty acid translocase CD36 (CD36) plays an important role in the initiation and pathogenesis of chronic liver disease and non-alcoholic fatty liver disease (NAFLD). The purpose of this study is to investigate the regulation of microRNA-20a-5p (miR-20a-5p) on CD36 in the pathogenesis of NAFLD. Human plasma samples were obtained from NAFLD patients and healthy controls. Mice were fed with high-fat diet to induce an in vivo NAFLD model. Histology staining was performed to examine the morphology and lipid deposition of mouse liver tissue. Real-time PCR, dual-luciferase assay, and western blotting were employed to detect the relationship between miR-20a-5p and CD36. The expression level of miR-20a-5p was decreased in NAFLD patients, HFD mice, and free fatty acid (FFA)-treated HepG2 cells or primary mouse hepatocytes, accompanied by increased lipid production in hepatocytes. MiR-20a-5p suppressed the expression of CD36 to reduce lipid accumulation via binding to its 3'-untranslated region (UTR). However, under the condition of interference with CD36, further inhibition of miR-20a-5p would not cause lipid over-accumulation. In this study, we found that miR-20a-5p played a protective role in lipid metabolic disorders of NAFLD by targeting CD36, which indicated the prospect of miR-20a-5p as a biomarker and treatment target for NAFLD.
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Affiliation(s)
- Xin Wang
- Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Diabetes Research and Care, Beijing, China
| | - Yan Ma
- Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Diabetes Research and Care, Beijing, China
| | - Long-Yan Yang
- Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Diabetes Research and Care, Beijing, China
| | - Dong Zhao
- Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Diabetes Research and Care, Beijing, China
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