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Zhan Z, Ye M, Jin X. The roles of FLOT1 in human diseases (Review). Mol Med Rep 2023; 28:212. [PMID: 37772385 PMCID: PMC10552069 DOI: 10.3892/mmr.2023.13099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/25/2023] [Indexed: 09/30/2023] Open
Abstract
FLOT1, a scaffold protein of lipid rafts, is involved in several biological processes, including lipid raft protein‑-dependent or clathrin‑independent endocytosis, and the formation of hippocampal synapses, amongst others. Increasing evidence has shown that FLOT1 can function as both a cancer promoter and cancer suppressor dependent on the type of cancer. FLOT1 can affect the occurrence and development of several types of cancer by affecting epithelial‑mesenchymal transition, proliferation of cancer cells, and relevant signaling pathways, and is regulated by long intergenic non‑coding RNAs or microRNAs. In the nervous system, overexpression or abnormally low expression of FLOT1 may lead to the occurrence of neurological diseases, such as Alzheimer's disease, Parkinson's disease, major depressive disorder and other diseases. Additionally, it is also associated with dilated cardiomyopathy, pathogenic microbial infection, diabetes‑related diseases, and gynecological diseases, amongst other diseases. In the present review, the structure and localization of FLOT1, as well as the physiological processes it is involved in are reviewed, and then the upstream and downstream regulation of FLOT1 in human disease, particularly in different types of cancer and neurological diseases are discussed, with a focus on potentially targeting FLOT1 for the clinical treatment of several diseases.
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Affiliation(s)
- Ziqing Zhan
- Department of Oncology, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang 315020, P.R. China
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Science Health Center, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Meng Ye
- Department of Oncology, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang 315020, P.R. China
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Science Health Center, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Xiaofeng Jin
- Department of Oncology, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang 315020, P.R. China
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Science Health Center, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
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2
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Dan W, Wang X, Wu J, Gu Y, Liu S, Zhang H, Chang X, Shi C, Yan H, Xia M, Wang L, Jiao H, Wu H, Lou W, Gao X, Bian H, Wang J, Huang LH. The early effects of sleeve gastrectomy on postprandial chylomicron triglycerides during the progression of type 2 diabetes. Clin Chim Acta 2023; 549:117558. [PMID: 37709114 DOI: 10.1016/j.cca.2023.117558] [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: 06/16/2023] [Revised: 08/21/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
BACKGROUND It remains unclear whether early sleeve gastrectomy (SG) improves postprandial very-low-density lipoprotein (VLDL) as well as chylomicron triglycerides (TGs) in a weight-independent manner in patients with or without type 2 diabetes (DM). Herein we investigated the early effects of SG on postprandial VLDL and chylomicron kinetics. METHODS A liquid meal test was performed before and after 1 week of SG. The plasma was collected for postprandial triglyceride-rich lipoprotein kinetics analyses, including VLDLs and chylomicrons, isolated by high-speed ultracentrifugation. Lipidomics and metabolomics were used to profile lipid and metabolite compositions of plasma and postprandial chylomicrons. De novo fatty acid synthesis in intestinal epithelial cells treated with chylomicron metabolites was examined using RT-PCR, immunoblotting, and free fatty acid measurement. RESULTS We found that patients with DM had markedly higher VLDL TGs than patients without DM, and such an increase was still retained after SG. In contrast, SG significantly decreased postprandial chylomicron TGs, but surprisingly, the degree of the reduction in patients with DM was less prominent than in patients without DM, confirmed by untargeted lipidomics analysis. Moreover, 5 unique metabolites potentially linked to de novo fatty acid synthesis from the pathway analysis were discovered by further metabolomic analysis of postprandial chylomicrons from patients with DM who underwent SG and verified by In vitro intestinal epithelial cell culture experiments. CONCLUSIONS SG in 1 week did not impact postprandial VLDL but decreased chylomicron TGs. Patients with DM keep higher postprandial chylomicron TG concentrations than patients without it after SG, potentially through some unique metabolites that increase intestinal fatty acid synthesis. These results implicate the timing for SG to reach lower intestinal fatty acid synthesis and postprandial chylomicron TG production is prior to the diagnosis of DM to potentially reduce cardiovascular risks.
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Affiliation(s)
- Wei Dan
- Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai 200433, China
| | - Xinmei Wang
- Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai 200433, China
| | - Jiaqi Wu
- Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai 200433, China
| | - Yu Gu
- Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai 200433, China
| | - Shuangshuang Liu
- Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai 200433, China
| | - Hongye Zhang
- Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai 200433, China
| | - Xinxia Chang
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Chenye Shi
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Hongmei Yan
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Mingfeng Xia
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Liu Wang
- Second Affiliated Hospital of Army Military Medical University, Chongqing 400037, China
| | - Heng Jiao
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Haifu Wu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Wenhui Lou
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Xin Gao
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Hua Bian
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
| | - Jiaxi Wang
- Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai 200433, China.
| | - Li-Hao Huang
- Shanghai Key Laboratory of Metabolic Remodeling and Health, Institute of Metabolism and Integrative Biology, Fudan University, Shanghai 200433, China; Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
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3
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Zhou J, Lu Y, Lin Y, Li C, Liu J, Jiang Z, Chen K. Overexpression of hepatic pescadillo 1 in obesity induces lipid dysregulation by inhibiting autophagy. Transl Res 2023:S1931-5244(23)00021-X. [PMID: 36775058 DOI: 10.1016/j.trsl.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/12/2023]
Abstract
Previous studies indicated that increased hepatic pescadillo 1 (PES1) in type II diabetic mice was associated with lipid dysregulation. However, the role of PES1 in obesity-associated lipid dysregulation is still unknown. This study investigates the effects and underlying mechanism. Livers from obese and healthy humans and mice were collected, and C57BL/6J mice were either fed on standard diet or high fat diet (HFD). McArdle 7777 rat hepatoma cells were treated with phosphate-buffered saline and oleic acid (OA)+ palmitic acid (PA), respectively. In vitro Pes1 knockdown or overexpression and in vivo Pes1 knockdown or liver-specific ablation or supplementation of Pes1 were used to explore the modulating role of PES1. We found that obesity in humans enhanced hepatic PES1 protein, accompanied by increased plasma TG. These data are consistent with those from OA+PA-treated cells and from HFD- or Pes1 overexpression-treated C57BL/6J mice. In vitro and in vivo Pes1 knockdown in cultured cells and in ob/ob mice promoted the expression of autophagy markers (TFEB, Beclin1 and LC3B-Ⅱ) while decreasing p62 and TG, contrary to Pes1 overexpression in cells and in normal mice. Moreover, liver-specific knockout of Pes1 protected the mice fed on HFD from increased TG levels, facilitating the TFEB, Beclin1 and LC3B-Ⅱ and curbing p62. Mechanistically, OA+PA increased C/EBPβ binding to the Pes1 promoter, leading to the elevation of PES1, and subsequently enhancing PES1-facilitated ubiquitination of TFEB. Our findings reveal that overexpression of hepatic PES1 in obesity may induce TG dysregulation by inhibiting autophagy.
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Affiliation(s)
- Jielin Zhou
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, Anhui 230032, P.R. China; Department of Oncology, Anhui Provincial Cancer Hospital, The First Affiliated Hospital of the University of Science and Technology of China, Hefei, Anhui 230031, P.R. China
| | - Yao Lu
- Department of Anesthesiology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Yan Lin
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Chengcheng Li
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Juan Liu
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Zhengxuan Jiang
- Department of Ophthalmology, the Second Affiliated Hospital, Anhui Medical University, Hefei, Anhui 230032, P.R. China.
| | - Keyang Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, Anhui 230032, P.R. China; Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, Anhui 230032, P.R. China.
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4
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Xu H, Zhou W, Zhan L, Bi T, Lu X. Liver mitochondria-associated endoplasmic reticulum membrane proteomics for studying the effects of ZiBuPiYin recipe on Zucker diabetic fatty rats after chronic psychological stress. Front Cell Dev Biol 2022; 10:995732. [PMID: 36407109 PMCID: PMC9669571 DOI: 10.3389/fcell.2022.995732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a complex metabolic disease with multiple etiologies, involving both genetic and environmental factors. With changes associated with modern life, increasing attention has been paid to chronic psychological stressors such as work stress. Chronic psychological stress can induce or aggravate diabetes mellitus, and conversely, with the deterioration of T2DM, patients often experience different degrees of depression, anxiety, and other negative emotions. In order to clarify the role of ZiBuPiYin recipe (ZBPYR) in regulating the liver mitochondria-associated endoplasmic reticulum membrane proteome to improve T2DM with chronic psychological stress, differentially expressed proteins (DEPs) were identified among Zucker lean littermates (control group), chronic psychological stress T2DM rats (model group), and ZBPYR administration rats (ZBPYR group) through iTRAQ with LC-MS/MS. Using Mfuzz soft clustering analysis, DEPs were divided into six different clusters. Clusters 1–6 contained 5, 68, 44, 57, 28, and 32 DEPs, respectively. Given that ZBPYR can alleviate T2DM symptoms and affect exploratory behavior during T2DM with chronic psychological stress, we focused on the clusters with opposite expression trends between model:control and ZBPYR:model groups. We screened out the DEPs in clusters 1, 3, and 4, which may be good candidates for the prevention and treatment of T2DM with chronic psychological stress, and further conducted bioinformatics analyses. DEPs were mainly involved in the insulin signaling pathway, oxidative phosphorylation, tricarboxylic acid cycle, amino acid metabolism, lysosome-related processes, and lipid metabolism. This may indicate the pathogenic basis of T2DM with chronic psychological stress and the potential therapeutic mechanism of ZBPYR. In addition, two key proteins, lysosome-associated protein (Lamp2) and tricarboxylic acid cycle-related protein (Suclg1), may represent novel biomarkers for T2DM with chronic psychological stress and drug targets of ZBPYR. Western blot analyses also showed similar expression patterns of these two proteins in liver MAMs of the model and ZBPYR groups.
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Affiliation(s)
- Huiying Xu
- Modern Research Laboratory of Spleen Visceral Manifestations Theory, School of Traditional Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Wen Zhou
- Modern Research Laboratory of Spleen Visceral Manifestations Theory, School of Traditional Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Libin Zhan
- Center for Innovative Engineering Technology in Traditional Chinese Medicine, Liaoning University of Traditional Chinese Medicine, Shenyang, China
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, China
- *Correspondence: Libin Zhan, ; Xiaoguang Lu,
| | - Tingting Bi
- Modern Research Laboratory of Spleen Visceral Manifestations Theory, School of Traditional Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaoguang Lu
- Department of Emergency Medicine, Zhongshan Hospital, Dalian University, Dalian, China
- *Correspondence: Libin Zhan, ; Xiaoguang Lu,
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Sharma P, Kapoor D, Shukla D. Role of Heparanase and Syndecan-1 in HSV-1 Release from Infected Cells. Viruses 2022; 14:2156. [PMID: 36298711 PMCID: PMC9612286 DOI: 10.3390/v14102156] [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: 09/09/2022] [Revised: 09/25/2022] [Accepted: 09/26/2022] [Indexed: 11/06/2022] Open
Abstract
Herpes Simplex Virus 1 (HSV-1) is a neurotropic human virus that belongs to the Alphaherpesvirinae subfamily of Herpesviridae. Establishment of its productive infection and progression of disease pathologies depend largely on successful release of virions from the virus-producing cells. HSV-1 is known to exploit many host factors for its release. Recent studies have shown that heparanase (HPSE) is one such host enzyme that is recruited for this purpose. It is an endoglycosidase that cleaves heparan sulfate (HS) from the surface of infected cells. HS is a virus attachment coreceptor that is commonly found on cell surfaces as HS proteoglycans e.g., syndecan-1 (SDC-1). The current model suggests that HSV-1 during the late stage of infection upregulates HPSE, which in turn enhances viral release by removing the virus-trapping HS moieties. In addition to its role in directly enabling viral release, HPSE accelerates the shedding of HS-containing ectodomains of SDC-1, which enhances HSV-1 release via a similar mechanism by upregulating CREB3 and COPII proteins. This review outlines the role of HPSE and SDC-1 as newly assigned host factors that facilitate HSV-1 release during a lytic infection cycle.
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Affiliation(s)
- Pankaj Sharma
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Divya Kapoor
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL 60612, USA
- Department of Microbiology and Immunology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Deepak Shukla
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL 60612, USA
- Department of Microbiology and Immunology, University of Illinois at Chicago, Chicago, IL 60612, USA
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6
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Zhou J, Jiang Z, Lin Y, Li C, Liu J, Tian M, Liu Y, Chen K. The daily caloric restriction and alternate-day fasting ameliorated lipid dysregulation in type 2 diabetic mice by downregulating hepatic pescadillo 1. Eur J Nutr 2022; 61:2775-2797. [PMID: 35290477 DOI: 10.1007/s00394-022-02850-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 02/22/2022] [Indexed: 12/12/2022]
Abstract
PURPOSE A possible link between pescadillo 1 (PES1) and lipid metabolism has been reported. However, whether PES1 is involved in the effects of daily caloric restriction (CR) and alternate-day fasting (ADF) interventions on diabetes-related lipid dysregulation is not elucidated. The current study aims are to explore the role of PES1 in effects of CR and ADF on diabetic mice and related mechanism. METHODS Eight-week-old male db/db mice with type 2 diabetes mellitus (T2DM) were randomly divided into untreated T2DM, CR and ADF groups. McArdle hepatocytes were treated with 48 h high glucose (HG), 48 h normal glucose (NG) and 24 h HG plus 24 h NG, respectively. Pes1 siRNA and overexpression plasmid were, respectively, transfected into liver cells, and AAV9-Pes1-shRNA was injected into db/db mice. RESULTS After 12-week interventions, the peroxisome proliferator-activated receptor alpha (PPAR-α) and carnitine palmitoyltransferase 1A (CPT1A) levels in livers of T2DM mice were enhanced by CR and ADF interventions with reductions of hepatic and plasma triglycerides. Unexpectedly, hepatic PES1 levels were downregulated by two interventions, consistent with the results of 48 h NG and 24 h HG plus 24 h NG-treated cells. Moreover, CPT1A level was upregulated in Pes1-siRNA-treated cells and AAV9-Pes1-shRNA injected murine livers, in contrast to Pes1 overexpression in cultured cells. Mechanistically, 48 h NG or 24 h HG plus 24 h NG treatment increased PPAR-α binding to Pes1 promoter, suppressing the PES1 expression, thereby lowering the PES1-mediated ubiquitination of CPT1A. CONCLUSION The present study suggests that CR and ADF may improve lipid dysregulation in diabetic mice by downregulating hepatic PES1.
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Affiliation(s)
- Jielin Zhou
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Zhengxuan Jiang
- Department of Ophthalmology, The Second Affiliated Hospital, Anhui Medical University, Hefei, 230021, Anhui, China
| | - Yan Lin
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Chengcheng Li
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Juan Liu
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Mengjun Tian
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Yong Liu
- AIER Hefei Eye Hospital Affiliated To Anhui Medical University, Hefei, 230031, Anhui, China.
| | - Keyang Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China.
- Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, China.
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7
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Du J, Zhang P, Luo J, Shen L, Zhang S, Gu H, He J, Wang L, Zhao X, Gan M, Yang L, Niu L, Zhao Y, Tang Q, Tang G, Jiang D, Jiang Y, Li M, Jiang A, Jin L, Ma J, Shuai S, Bai L, Wang J, Zeng B, Wu D, Li X, Zhu L. Dietary betaine prevents obesity through gut microbiota-drived microRNA-378a family. Gut Microbes 2022; 13:1-19. [PMID: 33550882 PMCID: PMC7889173 DOI: 10.1080/19490976.2020.1862612] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Betaine is a natural compound present in commonly consumed foods and may have a potential role in the regulation of glucose and lipids metabolism. However, the underlying molecular mechanism of its action remains largely unknown. Here, we show that supplementation with betaine contributes to improved high-fat diet (HFD)-induced gut microbiota dysbiosis and increases anti-obesity strains such as Akkermansia muciniphila, Lactobacillus, and Bifidobacterium. In mice lacking gut microbiota, the functional role of betaine in preventing HFD-induced obesity, metabolic syndrome, and inactivation of brown adipose tissues are significantly reduced. Akkermansia muciniphila is an important regulator of betaine in improving microbiome ecology and increasing strains that produce short-chain fatty acids (SCFAs). Increasing two main members of SCFAs including acetate and butyrate can significantly regulate the levels of DNA methylation at host miR-378a promoter, thus preventing the development of obesity and glucose intolerance. However, these beneficial effects are partially abolished by Yin yang (YY1), a common target gene of the miR-378a family. Taken together, our findings demonstrate that betaine can improve obesity and associated MS via the gut microbiota-derived miR-378a/YY1 regulatory axis, and reveal a novel mechanism by which gut microbiota improve host health.
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Affiliation(s)
- Jingjing Du
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Peiwen Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Jiang Luo
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Linyuan Shen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Shunhua Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Hao Gu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Jin He
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Linghui Wang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Xue Zhao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Mailing Gan
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Liu Yang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Lili Niu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Ye Zhao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Qianzi Tang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Guoqing Tang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Dongmei Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Yanzhi Jiang
- College of Life and Biology Science, Sichuan Agricultural University, Chengdu, China
| | - Mingzhou Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Anan Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Long Jin
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Jideng Ma
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Surong Shuai
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Lin Bai
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - Jinyong Wang
- Chongqing Academy of Animal Science, Rongchang, China
| | - Bo Zeng
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China,Bo Zeng College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - De Wu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, China,De Wu
| | - Xuewei Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China,Xuewei Li
| | - Li Zhu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China,Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China,CONTACT Li Zhu
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Winiarczyk D, Winiarczyk M, Winiarczyk S, Michalak K, Adaszek Ł. Proteomic Analysis of Tear Film Obtained from Diabetic Dogs. Animals (Basel) 2020; 10:ani10122416. [PMID: 33348610 PMCID: PMC7766195 DOI: 10.3390/ani10122416] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Canine diabetes is a serious disease, which can lead to severe complications, eventually even death. Currently, all the diagnostic procedures are the invasive ones, with blood collection remaining as a golden standard for both initial diagnosis, and later follow-up. Tears can be obtained in a non-invasive manner, which makes them a perfect candidate for a screening tool in canine diabetes. In this study we aimed to analyze the protein composition of the tears collected from the healthy animals and compared it to the diabetic group. There are significant differences between these two groups, and we believe that the identified proteins hold promise as a potential diagnostic tool, which can be later on used both in clinical practice, and for better understanding of the disease. Abstract Canine diabetes mellitus is a significant health burden, followed with numerous systemic complications, including diabetic cataracts and retinopathy, leading to blindness. Diabetes should be considered as a disease damaging all the body organs, including gastrointestinal tract, through a complex combination of vascular and metabolic pathologies, leading to impaired gut function. Tear film can be obtained in a non-invasive way, which makes it a feasible biomarker source. In this study we compared proteomic changes ongoing in tear film of diabetic dogs. The study group consisted of 15 diabetic dogs, and 13 dogs served as a control group. After obtaining tear film with Schirmer strips, we performed 2-dimensional electrophoresis, followed by Delta2D software analysis, which allowed to select statistically significant differentially expressed proteins. After their identification with MALDI-TOF (matrix assisted laser desorption and ionisation time of flight) spectrometry we found one up-regulated protein in tear film of diabetic dogs—SRC kinase signaling inhibitor 1 (SRCIN1). Eight proteins were down-regulated: phosphatidylinositol-4 kinase type 2 alpha (PI4KIIα), Pro-melanin concentrating hormone (Pro-MCH), Flotillin-1, Protein mono-ADP ribosyltransferase, GRIP and coiled coil domain containing protein 2, tetratricopeptide repeat protein 36, serpin, and Prelamin A/C. Identified proteins were analyzed by Panther Gene Ontology software, and their possible connections with diabetic etiopathology were discussed. We believe that this is the first study to target tear film proteome in canine diabetes. We believe that combined with traditional examination, the tear film proteomic analysis can be a new source of biomarkers both for clinical practice, and experimental research.
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Affiliation(s)
- Dagmara Winiarczyk
- Department of Internal Diseases of Small Animals, University of Life Sciences of Lublin, 20-950 Lublin, Poland;
| | - Mateusz Winiarczyk
- Department of Vitreoretinal Surgery, Medical University of Lublin, 20-950 Lublin, Poland;
| | - Stanisław Winiarczyk
- Department of Epizootiology, University of Life Sciences of Lublin, 20-950 Lublin, Poland; (S.W.); (K.M.)
| | - Katarzyna Michalak
- Department of Epizootiology, University of Life Sciences of Lublin, 20-950 Lublin, Poland; (S.W.); (K.M.)
| | - Łukasz Adaszek
- Department of Epizootiology, University of Life Sciences of Lublin, 20-950 Lublin, Poland; (S.W.); (K.M.)
- Correspondence:
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Endocytosis and Trafficking of Heparan Sulfate Proteoglycans in Triple-Negative Breast Cancer Cells Unraveled with a Polycationic Peptide. Int J Mol Sci 2020; 21:ijms21218282. [PMID: 33167372 PMCID: PMC7663799 DOI: 10.3390/ijms21218282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/23/2020] [Accepted: 11/02/2020] [Indexed: 12/15/2022] Open
Abstract
The process of heparan sulfate proteoglycan (HSPG) internalization has been described as following different pathways. The tumor-specific branched NT4 peptide has been demonstrated to bind HSPGs on the plasma membrane and to be internalized in tumor cell lines. The polycationic peptide has been also shown to impair migration of different cancer cell lines in 2D and 3D models. Our hypothesis was that HSPG endocytosis could affect two important phenomena of cancer development: cell migration and nourishment. Using NT4 as an experimental tool mimicking heparin-binding ligands, we studied endocytosis and trafficking of HSPGs in a triple-negative human breast cancer cell line, MDA-MB-231. The peptide entered cells employing caveolin- or clathrin-dependent endocytosis and macropinocytosis, in line with what is already known about HSPGs. NT4 then localized in early and late endosomes in a time-dependent manner. The peptide had a negative effect on CDC42-activation triggered by EGF. The effect can be explained if we consider NT4 a competitive inhibitor of EGF on HS that impairs the co-receptor activity of the proteoglycan, reducing EGFR activation. Reduction of the invasive migratory phenotype of MDA-MB-231 induced by NT4 can be ascribed to this effect. RhoA activation was damped by EGF in MDA-MB-231. Indeed, EGF reduced RhoA-GTP and NT4 did not interfere with this receptor-mediated signaling. On the other hand, the peptide alone determined a small but solid reduction in active RhoA in breast cancer cells. This result supports the observation of few other studies, showing direct activation of the GTPase through HSPG, not mediated by EGF/EGFR.
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Cheng Y, Sun D, Zhu B, Zhou W, Lv C, Kou F, Wei H. Integrative Metabolic and Proteomic Profiling of the Brainstem in Spontaneously Hypertensive Rats. J Proteome Res 2020; 19:4114-4124. [DOI: 10.1021/acs.jproteome.0c00585] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yu Cheng
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Dongmei Sun
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Bangjie Zhu
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wenbin Zhou
- Shanghai Zhulian Intelligent Technology Ltd. Co., Shanghai 201323, China
| | - Chunming Lv
- Shanghai Zhulian Intelligent Technology Ltd. Co., Shanghai 201323, China
| | - Fang Kou
- Institute of Interdisciplinary Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Hai Wei
- Institute of Interdisciplinary Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
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Flotillins: At the Intersection of Protein S-Palmitoylation and Lipid-Mediated Signaling. Int J Mol Sci 2020; 21:ijms21072283. [PMID: 32225034 PMCID: PMC7177705 DOI: 10.3390/ijms21072283] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 02/07/2023] Open
Abstract
Flotillin-1 and flotillin-2 are ubiquitously expressed, membrane-associated proteins involved in multifarious cellular events from cell signaling, endocytosis, and protein trafficking to gene expression. They also contribute to oncogenic signaling. Flotillins bind the cytosolic leaflet of the plasma membrane and endomembranes and, upon hetero-oligomerization, serve as scaffolds facilitating the assembly of multiprotein complexes at the membrane-cytosol interface. Additional functions unique to flotillin-1 have been discovered recently. The membrane-binding of flotillins is regulated by S-palmitoylation and N-myristoylation, hydrophobic interactions involving specific regions of the polypeptide chain and, to some extent, also by their oligomerization. All these factors endow flotillins with an ability to associate with the sphingolipid/cholesterol-rich plasma membrane domains called rafts. In this review, we focus on the critical input of lipids to the regulation of the flotillin association with rafts and thereby to their functioning. In particular, we discuss how the recent developments in the field of protein S-palmitoylation have contributed to the understanding of flotillin1/2-mediated processes, including endocytosis, and of those dependent exclusively on flotillin-1. We also emphasize that flotillins affect directly or indirectly the cellular levels of lipids involved in diverse signaling cascades, including sphingosine-1-phosphate and PI(4,5)P2. The mutual relations between flotillins and distinct lipids are key to the regulation of their involvement in numerous cellular processes.
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12
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Basu D, Bornfeldt KE. Hypertriglyceridemia and Atherosclerosis: Using Human Research to Guide Mechanistic Studies in Animal Models. Front Endocrinol (Lausanne) 2020; 11:504. [PMID: 32849290 PMCID: PMC7423973 DOI: 10.3389/fendo.2020.00504] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 06/23/2020] [Indexed: 12/18/2022] Open
Abstract
Human studies support a strong association between hypertriglyceridemia and atherosclerotic cardiovascular disease (CVD). However, whether a causal relationship exists between hypertriglyceridemia and increased CVD risk is still unclear. One plausible explanation for the difficulty establishing a clear causal role for hypertriglyceridemia in CVD risk is that lipolysis products of triglyceride-rich lipoproteins (TRLs), rather than the TRLs themselves, are the likely mediators of increased CVD risk. This hypothesis is supported by studies of rare mutations in humans resulting in impaired clearance of such lipolysis products (remnant lipoprotein particles; RLPs). Several animal models of hypertriglyceridemia support this hypothesis and have provided additional mechanistic understanding. Mice deficient in lipoprotein lipase (LPL), the major vascular enzyme responsible for TRL lipolysis and generation of RLPs, or its endothelial anchor GPIHBP1, are severely hypertriglyceridemic but develop only minimal atherosclerosis as compared with animal models deficient in apolipoprotein (APO) E, which is required to clear TRLs and RLPs. Likewise, animal models convincingly show that increased clearance of TRLs and RLPs by LPL activation (achieved by inhibition of APOC3, ANGPTL3, or ANGPTL4 action, or increased APOA5) results in protection from atherosclerosis. Mechanistic studies suggest that RLPs are more atherogenic than large TRLs because they more readily enter the artery wall, and because they are enriched in cholesterol relative to triglycerides, which promotes pro-atherogenic effects in lesional cells. Other mechanistic studies show that hepatic receptors (LDLR and LRP1) and APOE are critical for RLP clearance. Thus, studies in animal models have provided additional mechanistic insight and generally agree with the hypothesis that RLPs derived from TRLs are highly atherogenic whereas hypertriglyceridemia due to accumulation of very large TRLs in plasma is not markedly atherogenic in the absence of TRL lipolysis products.
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Affiliation(s)
- Debapriya Basu
- Division of Endocrinology, Diabetes and Metabolism, New York University School of Medicine, New York, NY, United States
| | - Karin E. Bornfeldt
- Department of Medicine, University of Washington Medicine Diabetes Institute, University of Washington School of Medicine, Seattle, WA, United States
- Department of Pathology, University of Washington Medicine Diabetes Institute, University of Washington School of Medicine, Seattle, WA, United States
- *Correspondence: Karin E. Bornfeldt
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Lu HS, Schmidt AM, Hegele RA, Mackman N, Rader DJ, Weber C, Daugherty A. Annual Report on Sex in Preclinical Studies: Arteriosclerosis, Thrombosis, and Vascular Biology Publications in 2018. Arterioscler Thromb Vasc Biol 2019; 40:e1-e9. [PMID: 31869272 DOI: 10.1161/atvbaha.119.313556] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hong S Lu
- From the Saha Cardiovascular Research Center and Department of Physiology, University of Kentucky, Lexington (H.S.L., A.D.)
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University Langone Medical Center, New York, NY (A.M.S.)
| | - Robert A Hegele
- Department of Medicine and Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada (R.A.H.)
| | - Nigel Mackman
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC (N.M.)
| | - Daniel J Rader
- Departments of Medicine and Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia (D.J.R.)
| | - Christian Weber
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-Universität (LMU) and German Centre for Cardiovascular Research (DZHK), partner site Munich Heart Alliance, Munich, Germany (C.W.)
| | - Alan Daugherty
- From the Saha Cardiovascular Research Center and Department of Physiology, University of Kentucky, Lexington (H.S.L., A.D.)
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Li HT, Ye C, Zhou M, Yang Y, Jin Q, Pan CF. Moxifloxacin suppresses airway inflammation and modulates expression of caveolin-1 and flotillin-1 in airway smooth muscle cells of asthmatic rats. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:469. [PMID: 31700905 DOI: 10.21037/atm.2019.08.43] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background Moxifloxacin (MXF) possesses anti-inflammatory properties on asthmatic airway smooth muscle cells (ASMCs) beyond their antimicrobial effects, but the mechanisms are still unknown. This study was to investigate effects of MXF on expression of caveolin-1 (Cav-1) and flotillin-1 (FLOT1) in ASMCs in asthmatic rats. Methods ASMCs were collected from the airway and cultured in vitro. Cells from normal rats were treated with normal saline (Group N); cells from asthmatic rats were incubated with normal saline (Group A) or MXF (20 mg/L) (Group M); Cav-1 expression was up-regulated by transferring Cav-1 expressing lentivirus (Group L) and FLOT1 expression down-regulated by using siRNA in cells from asthmatic rats (Group S). The expressions of Cav-1, FLOT1 and p65 NF-κB were measured by Western blotting and quantificational real-time polymerase chain reaction (qRT-PCR), and interleukin-8 (IL-8) and eotaxin contents were measured by enzyme-linked immunosorbent assay (ELISA). Results Compared with normal control, Cav-1 expression significantly decreased in asthmatic groups (P<0.01); MXF up-regulated Cav-1 expression in asthmatic groups (P<0.01). However, compared with normal control, the expression of FLOT1 and p65 NF-κB dramatically increased in asthmatic groups (P<0.01); MXF down-regulated the expression of FLOT1 and p65 NF-κB in asthmatic groups (P<0.01); meanwhile, the expressions of FLOT1 and p65 NF-κB decreased after up-regulation of Cav-1 expression in asthmatic groups (P=0.01). Compared with asthmatic groups, the IL-8 and eotaxin contents significantly decreased in MXF Groups, Cav-1 up-regulation asthmatic groups and FLOT1 down-regulation asthmatic groups (P<0.01). Conclusions MXF can modulate the airway inflammation, upregulate Cav-1 expression, downregulate the expression of FLOT1 and p65 NF-κB in asthmatic rat ASMCs, which may be related to the anti-inflammatory effects of MXF in asthmatic ASMCs.
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Affiliation(s)
- Hui-Ting Li
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School, Shanghai 200433, China
| | - Cong Ye
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School, Shanghai 200433, China
| | - Min Zhou
- Department of Respiratory Medicine, Shanghai Jinshan Central Hospital, Shanghai 201500, China
| | - Yan Yang
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School, Shanghai 200433, China
| | - Quan Jin
- Department of Respiratory Medicine, Jinshan Hospital, Fudan University, Shanghai 201508, China
| | - Chun-Feng Pan
- Department of Respiratory Medicine, Jinshan Hospital, Fudan University, Shanghai 201508, China
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15
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Jin Z, Ke J, Guo P, Wang Y, Wu H. Quercetin improves blood-brain barrier dysfunction in rats with cerebral ischemia reperfusion via Wnt signaling pathway. Am J Transl Res 2019; 11:4683-4695. [PMID: 31497191 PMCID: PMC6731416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 07/12/2019] [Indexed: 06/10/2023]
Abstract
Reperfusion therapy after cerebral ischemia often leads to reperfusion injury which may cause brain edema and blood-brain barrier (BBB) dysfunction. As a natural bioflavonoid, quercetin may exert protective effects on BBB dysfunction. This study aimed to investigate effects of quercetin in a rat model of global cerebral ischemia reperfusion (I/R) injury and explore the potential mechanism. Male rats were randomly divided into 4 groups: sham group, I/R group, quercetin-treated group (25 μmol/kg twice daily for 3 consecutive days before I/R), and quercetin/DKK-1-treated group. Global cerebral I/R was induced by bilateral common carotid artery occlusion combined with hypotension for 20 min and reperfusion for 24 h. Neurological function was scored, and then rats were sacrificed. The brain was harvested for HE staining, NeuN staining, and detection of brain water content. The BBB structure and permeability were examined by transmission electron microscopy and Evans blue extravasation, respectively. The protein expression of MMP-9, ZO-1, Claudin-5, β-catenin, and GSK-3β, and the mRNA expression of Axin and LEF1 were detected in either the absence or presence of Wnt/β-catenin inhibitor DKK-1. Results showed that quercetin reduced brain edema and BBB leakage, and improved BBB dysfunction. Quercetin could increase the expression of ZO-1, Claudin-5, β-catenin, and LEF1, and decrease the expression of MMP-9, GSK-3β and Axin. And all these protective effects of quercetin could be reversed by DKK-1. Thus, quercetin can alleviate BBB dysfunction after global cerebral I/R in rats and the mechanism may be related to the activation of canonical Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Zhao Jin
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University Wuhan 430071, China
| | - Jianjuan Ke
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University Wuhan 430071, China
| | - Peipei Guo
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University Wuhan 430071, China
| | - Yanlin Wang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University Wuhan 430071, China
| | - Huisheng Wu
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University Wuhan 430071, China
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Ruiz HH, Díez RL, Arivazahagan L, Ramasamy R, Schmidt AM. Metabolism, Obesity, and Diabetes Mellitus. Arterioscler Thromb Vasc Biol 2019; 39:e166-e174. [PMID: 31242034 PMCID: PMC6693645 DOI: 10.1161/atvbaha.119.312005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Obesity and diabetes remain leading causes of reduced health span and life span throughout the world. Hence, it is not surprising that these areas are at the center of highly active areas of research. The identification of novel mechanisms underlying these metabolic disorders sets the stage for uncovering new potential therapeutic strategies. In this issue of Highlights in Arteriosclerosis, Thrombosis and Vascular Biology, we review recently published papers in the journal that add to our understanding of causes and consequences of obesity and diabetes and how these disorders impact metabolic function. Collectively, these studies in cultured cells to in vivo animal models to human subjects add to the growing body of evidence that both cell-intrinsic and cell-cell communication mechanisms collaborate in metabolic disorders to cause obesity, insulin resistance and diabetes and its complications.
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Affiliation(s)
- Henry H. Ruiz
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, N.Y. 10016
| | - Raquel López Díez
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, N.Y. 10016
| | - Lakshmi Arivazahagan
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, N.Y. 10016
| | - Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, N.Y. 10016
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University School of Medicine, New York, N.Y. 10016
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Shrestha P, van de Sluis B, Dullaart RP, van den Born J. Novel aspects of PCSK9 and lipoprotein receptors in renal disease-related dyslipidemia. Cell Signal 2019; 55:53-64. [DOI: 10.1016/j.cellsig.2018.12.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 12/01/2018] [Accepted: 12/03/2018] [Indexed: 12/12/2022]
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Handelsman Y, Lepor NE. PCSK9 Inhibitors in Lipid Management of Patients With Diabetes Mellitus and High Cardiovascular Risk: A Review. J Am Heart Assoc 2018; 7:JAHA.118.008953. [PMID: 29934421 PMCID: PMC6064883 DOI: 10.1161/jaha.118.008953] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Abstract
PURPOSE OF REVIEW Type 2 diabetes is associated with a characteristic dyslipidemia that may exacerbate cardiovascular risk. The causes of, and the effects of new antihyperglycemia medications on, this dyslipidemia, are under investigation. In an unexpected reciprocal manner, lowering LDL-cholesterol with statins slightly increases the risk of diabetes. Here we review the latest findings. RECENT FINDINGS The inverse relationship between LDL-cholesterol and diabetes has now been confirmed by multiple lines of evidence. This includes clinical trials, genetic instruments using aggregate single nucleotide polymorphisms, as well as at least eight individual genes - HMGCR, NPC1L1, HNF4A, GCKR, APOE, PCKS9, TM6SF2, and PNPLA3 - support this inverse association. Genetic and pharmacologic evidence suggest that HDL-cholesterol may also be inversely associated with diabetes risk. Regarding the effects of diabetes on lipoproteins, new evidence suggests that insulin resistance but not diabetes per se may explain impaired secretion and clearance of VLDL-triglycerides. Weight loss, bariatric surgery, and incretin-based therapies all lower triglycerides, whereas SGLT2 inhibitors may slightly increase HDL-cholesterol and LDL-cholesterol. SUMMARY Diabetes and lipoproteins are highly interregulated. Further research is expected to uncover new mechanisms governing the metabolism of glucose, fat, and cholesterol. This topic has important implications for treating type 2 diabetes and cardiovascular disease.
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MESH Headings
- Animals
- Cholesterol, HDL/genetics
- Cholesterol, HDL/metabolism
- Cholesterol, LDL/genetics
- Cholesterol, LDL/metabolism
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/therapy
- Dyslipidemias/genetics
- Dyslipidemias/metabolism
- Dyslipidemias/therapy
- Humans
- Lipoproteins, VLDL/genetics
- Lipoproteins, VLDL/metabolism
- Polymorphism, Single Nucleotide
- Triglycerides/genetics
- Triglycerides/metabolism
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Affiliation(s)
- Sei Higuchi
- Columbia University College of Physicians & Surgeons, Naomi Berrie Diabetes Center
- Department of Pathology and Cell Biology, New York, NY
| | - M Concepción Izquierdo
- Columbia University College of Physicians & Surgeons, Naomi Berrie Diabetes Center
- Department of Pathology and Cell Biology, New York, NY
| | - Rebecca A Haeusler
- Columbia University College of Physicians & Surgeons, Naomi Berrie Diabetes Center
- Department of Pathology and Cell Biology, New York, NY
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