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Ma Y, Zhang X, Xuan B, Li D, Yin N, Ning L, Zhou YL, Yan Y, Tong T, Zhu X, Huang X, Hu M, Wang Z, Cui Z, Li H, Wang J, Fang JY, Liu R, Chen H, Hong J. Disruption of CerS6-mediated sphingolipid metabolism by FTO deficiency aggravates ulcerative colitis. Gut 2024; 73:268-281. [PMID: 37734910 DOI: 10.1136/gutjnl-2023-330009] [Citation(s) in RCA: 6] [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: 04/04/2023] [Accepted: 09/05/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND AND AIMS Deregulation of RNA N6-methyladenosine (m6A) modification in intestinal epithelial cells (IECs) influences intestinal immune cells and leads to intestinal inflammation. We studied the function of fat mass-and obesity-associated protein (FTO), one of the m6A demethylases, in patients with ulcerative colitis (UC). METHODS We analysed colon tissues of Ftoflox/flox; Villin-cre mice and their Ftoflox/flox littermates with dextran sulfate sodium (DSS) using real-time PCR and 16s rRNA sequencing. RNA and methylated RNA immunoprecipitation sequencing were used to analyse immunocytes and IECs. Macrophages were treated with conditioned medium of FTO-knockdown MODE-K cells or sphingosine-1-phosphate (S1P) and analysed for gene expression. Liquid chromatograph mass spectrometry identified C16-ceramide. RESULTS FTO downregulation was identified in our in-house cohort and external cohorts of UC patients. Dysbiosis of gut microbiota, increased infiltration of proinflammatory macrophages, and enhanced differentiation of Th17 cells were observed in Ftoflox/flox;Villin-cre mice under DSS treatment. FTO deficiency resulted in an increase in m6A modification and a decrease in mRNA stability of CerS6, the gene encoding ceramide synthetase, leading to the downregulation of CerS6 and the accumulation of S1P in IECs. Subsequentially, the secretion of S1P by IECs triggered proinflammatory macrophages to secrete serum amyloid A protein 1/3, ultimately inducing Th17 cell differentiation. In addition, through bioinformatic analysis and experimental validation, we identified UC patients with lower FTO expression might respond better to vedolizumab treatment. CONCLUSIONS FTO downregulation promoted UC by decreasing CerS6 expression, leading to increased S1P accumulation in IECs and aggravating colitis via m6A-dependent mechanisms. Lower FTO expression in UC patients may enhance their response to vedolizumab treatment.
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Affiliation(s)
- Yanru Ma
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xinyu Zhang
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Baoqin Xuan
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Danjie Li
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Shanghai, People's Republic of China
| | - Nan Yin
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Shanghai, People's Republic of China
| | - Lijun Ning
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi-Lu Zhou
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuqing Yan
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tianying Tong
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoqiang Zhu
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaowen Huang
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Muni Hu
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenhua Wang
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhe Cui
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Huabin Li
- Shanghai Institute of Immunology, State Key Laboratory of Systems Medicine for Cancer, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Jiqiu Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Shanghai, People's Republic of China
| | - Jing-Yuan Fang
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ruixin Liu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Shanghai, People's Republic of China
| | - Haoyan Chen
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Hong
- State Key Laboratory of Systems Medicine for Cancer; Key Laboratory of Gastroenterology & Hepatology, Ministry of Health; Division of Gastroenterology and Hepatology; Shanghai Cancer Institute; Shanghai Institute of Digestive Disease; Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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2
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Wang Y, Jiang Y, Jiang L, Xiong W, Wang Y, Gao X, Chen Q, Lin L, Yu T, Tang Y. Estrogen increases the expression of BKCa and impairs the contraction of colon smooth muscle via upregulation of sphingosine kinase 1. J Cell Physiol 2023; 238:2390-2406. [PMID: 37642352 DOI: 10.1002/jcp.31106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 06/03/2023] [Accepted: 07/20/2023] [Indexed: 08/31/2023]
Abstract
Estrogen (E2) may impair the contraction of colonic smooth muscle (SM) leading to constipation. Large conductance Ca2+ -activated K+ channels (BKCa ) are widely expressed in the smooth muscle cells (SMCs) contributing to hyperpolarization and relaxation of SMCs. Sphingosine kinase 1 (SphK1) is known to influence the expression of BKCa . We aimed to elucidate the potential underlying molecular mechanism of BKCa and SphK1 that may influence E2-induced colonic dysmotility. In ovariectomized rats, SM contraction and expression of BKCa , SphK1, sphingosine-1-phosphate receptor (S1PR) were analyzed after the treatment with vehicle, BSA-E2, E2, and E2 receptor antagonist. The role of BKCa , SphK1, and S1PR in E2-induced SM dysmotility was investigated in rat colonic SMCs. The effect of SphK1 on SM contraction as well as on the expression of BKCa and S1PR was analyzed in SphK1 knock-out mutant mice and wild-type (WT) mice treated with or without E2. The E2-treated group exhibited a weak contraction of colonic SM and a delayed colonic transit. The treatment with E2 significantly upregulated the expression of BKCa , SphK1, S1PR1, and S1PR2, but not S1PR3, in colon SM and SMCs. Inhibition of BKCa , SphK1, S1PR1, and S1PR2 expression attenuated the effect of E2 on Ca2+ mobilization in rat colon SMCs. WT mice treated with E2 showed impaired gastrointestinal motility and enhanced expression of BKCa , S1PR1, and S1PR2 compared with those without E2 treatment. Conversely, in SphK1 knock-out mice treated with E2, these effects were partially reversed. E2 increased the release of S1P which in turn could have activated S1PR1 and S1PR2. Loss of SphK1 attenuated the effect of E2 on the upregulation of S1PR1 and S1PR2 expression. These findings indicated that E2 impaired the contraction of colon SM through activation of BKCa via the upregulation of SphK1 and the release of S1P. In the E2-induced BKCa upregulation, S1PR1 and S1PR2 might also be involved. These results may provide further insights into a therapeutic target and optional treatment approaches for patients with constipation.
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Affiliation(s)
- Yan Wang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ya Jiang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ling Jiang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wenjie Xiong
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yanjuan Wang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiangyue Gao
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Qi Chen
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lin Lin
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ting Yu
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yurong Tang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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3
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Amdanee N, Shao M, Hu X, Fang X, Zhou C, Chen J, Ridwan Chattun M, Wen L, Pan X, Zhang X, Xu Y. Serum Metabolic Profile in Schizophrenia Patients With Antipsychotic-Induced Constipation and Its relationship With Gut Microbiome. Schizophr Bull 2023; 49:646-658. [PMID: 36723169 PMCID: PMC10154739 DOI: 10.1093/schbul/sbac202] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND AND HYPOTHESIS Antipsychotics (APs), the cornerstone of schizophrenia treatment, confer a relatively high risk of constipation. However, the mechanisms underpinning AP-induced constipation are poorly understood. Thus, we hypothesized that (1) schizophrenia patients with AP-induced constipation have distinct metabolic patterns; (2) there is more than one mechanism at play in producing this adverse drug effect; and (3) AP-associated changes in the gut microbiome are related to the altered metabolic profiles. STUDY DESIGN Eighty-eight schizophrenia patients, including 44 with constipation (C) and 44 matched patients without constipation (NC), were enrolled in this study. Constipation was diagnosed by Rome IV criteria for constipation and colonic transit time using radiopaque markers (ROMs) while severity was evaluated with the Bristol Stool Form Scale (BSS) and Constipation Assessment Scale (CAS). Fasting blood samples were drawn from all participants and were subjected to non-targeted liquid chromatography-mass spectrometry (LC-MS) metabolomic analysis. STUDY RESULTS Eleven metabolites were significantly altered in AP-induced constipation which primarily disturbed sphingolipid metabolism, choline metabolism, and sphingolipid signaling pathway (P value < .05, FDR < 0.05). In the C group, changes in the gut bacteria showed a certain degree of correlation with 2 of the significantly altered serum metabolites and were associated with alterations in choline metabolism. CONCLUSIONS Our findings indicated that there were disturbances in distinct metabolic pathways that were associated with AP-induced constipation. In addition, this study presents evidence of a link between alterations in the gut microbiome and host metabolism which provides additional mechanistic insights on AP-induced constipation.
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Affiliation(s)
- Nousayhah Amdanee
- Department of Geriatric Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Miaomiao Shao
- Department of Geriatric Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
- Department of Psychiatry, The Second People’s Hospital of Jiangning District, Nanjing, Jiangsu, China
| | - Xiuxiu Hu
- Department of Geriatric Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
- Department of Psychiatry, The Second People’s Hospital of Jiangning District, Nanjing, Jiangsu, China
| | - Xinyu Fang
- Department of Geriatric Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Chao Zhou
- Department of Geriatric Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Jiu Chen
- Institute of Neuropsychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Mohammad Ridwan Chattun
- Department of Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Lu Wen
- Department of Psychiatry, The Second People’s Hospital of Jiangning District, Nanjing, Jiangsu, China
| | - Xinming Pan
- Department of Psychiatry, The Second People’s Hospital of Jiangning District, Nanjing, Jiangsu, China
| | - Xiangrong Zhang
- Department of Geriatric Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
- The Affiliated Xuzhou Oriental Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yue Xu
- Department of Geriatric Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
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4
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Ding J, Ji J, Rabow Z, Shen T, Folz J, Brydges CR, Fan S, Lu X, Mehta S, Showalter MR, Zhang Y, Araiza R, Bower LR, Lloyd KCK, Fiehn O. A metabolome atlas of the aging mouse brain. Nat Commun 2021; 12:6021. [PMID: 34654818 PMCID: PMC8519999 DOI: 10.1038/s41467-021-26310-y] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 09/24/2021] [Indexed: 12/30/2022] Open
Abstract
The mammalian brain relies on neurochemistry to fulfill its functions. Yet, the complexity of the brain metabolome and its changes during diseases or aging remain poorly understood. Here, we generate a metabolome atlas of the aging wildtype mouse brain from 10 anatomical regions spanning from adolescence to old age. We combine data from three assays and structurally annotate 1,547 metabolites. Almost all metabolites significantly differ between brain regions or age groups, but not by sex. A shift in sphingolipid patterns during aging related to myelin remodeling is accompanied by large changes in other metabolic pathways. Functionally related brain regions (brain stem, cerebrum and cerebellum) are also metabolically similar. In cerebrum, metabolic correlations markedly weaken between adolescence and adulthood, whereas at old age, cross-region correlation patterns reflect decreased brain segregation. We show that metabolic changes can be mapped to existing gene and protein brain atlases. The brain metabolome atlas is publicly available ( https://mouse.atlas.metabolomics.us/ ) and serves as a foundation dataset for future metabolomic studies.
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Affiliation(s)
- Jun Ding
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
- Department of Chemistry, Wuhan University, 430072, Wuhan, Hubei, P.R. China
| | - Jian Ji
- School of Food Science, State Key Laboratory of Food Science and Technology, National Engineering Research Center for Functional Foods, Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, 214122, Wuxi, Jiangsu, P.R. China
| | - Zachary Rabow
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Tong Shen
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Jacob Folz
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Christopher R Brydges
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Sili Fan
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Xinchen Lu
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Sajjan Mehta
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Megan R Showalter
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Ying Zhang
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA
| | - Renee Araiza
- Mouse Biology Program, and Department of Surgery, School of Medicine, University of California, Davis, Davis, CA, 95618, USA
| | - Lynette R Bower
- Mouse Biology Program, and Department of Surgery, School of Medicine, University of California, Davis, Davis, CA, 95618, USA
| | - K C Kent Lloyd
- Mouse Biology Program, and Department of Surgery, School of Medicine, University of California, Davis, Davis, CA, 95618, USA
| | - Oliver Fiehn
- West Coast Metabolomics Center, UC Davis Genome Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA, 95616, USA.
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Cheng M, Sun Y, Wang L, Tan L, Jin H, Yan S, Li S, Xiao X. Integrative analysis of microbiome and metabolome in rats with Gest-Aid Plus Oral Liquid supplementation reveals mechanism of its healthcare function. FOOD QUALITY AND SAFETY 2021. [DOI: 10.1093/fqsafe/fyab010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Abstract
Objective
This study aimed to elucidate the possible mechanism of Gest-Aid Plus Oral Liquid (GAP) on healthcare function.
Method
Ultrahigh-performance liquid chromatography–quadrupole time-of-flight mass spectrometry-based metabolomics and 16S rDNA sequencing of gut microbiota were performed on serum and fecal samples of GAP and control rats. Additionally, short-chain fatty acids (SCFAs) and inflammatory cytokines in fecal samples were determined through gas chromatography–mass spectrometry and enzyme-linked immunosorbent assay kits.
Result
Metabolomics discovered 41 metabolites, which mainly involved amino acid metabolism, lipid metabolism, coenzyme factors, and vitamin metabolism. Administration of GAP increased abundance of Prevotella_9, Alloprevotella, Blautia, Phascolarctobacterium, Parabacteroides, and Fusicatenibacter, and six SCFAs were increased in the GAP group. Measurement of inflammatory cytokines showed that GAP had an anti-inflammatory effect in rats.
Conclusion
Administration of GAP greatly affects the aspartate metabolism and microecology of rats, enhances intestinal motility and gut barrier integrity and anti-inflammation. These findings not only have possible implications for further application of GAP, but also provide a link between the gut microbiome, SCFAs, inflammation and serum metabolites in rats.
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Vaena S, Chakraborty P, Lee HG, Janneh AH, Kassir MF, Beeson G, Hedley Z, Yalcinkaya A, Sofi MH, Li H, Husby ML, Stahelin RV, Yu XZ, Mehrotra S, Ogretmen B. Aging-dependent mitochondrial dysfunction mediated by ceramide signaling inhibits antitumor T cell response. Cell Rep 2021; 35:109076. [PMID: 33951438 PMCID: PMC8127241 DOI: 10.1016/j.celrep.2021.109076] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 03/10/2021] [Accepted: 04/12/2021] [Indexed: 01/09/2023] Open
Abstract
We lack a mechanistic understanding of aging-mediated changes in mitochondrial bioenergetics and lipid metabolism that affect T cell function. The bioactive sphingolipid ceramide, induced by aging stress, mediates mitophagy and cell death; however, the aging-related roles of ceramide metabolism in regulating T cell function remain unknown. Here, we show that activated T cells isolated from aging mice have elevated C14/C16 ceramide accumulation in mitochondria, generated by ceramide synthase 6, leading to mitophagy/mitochondrial dysfunction. Mechanistically, aging-dependent mitochondrial ceramide inhibits protein kinase A, leading to mitophagy in activated T cells. This aging/ceramide-dependent mitophagy attenuates the antitumor functions of T cells in vitro and in vivo. Also, inhibition of ceramide metabolism or PKA activation by genetic and pharmacologic means prevents mitophagy and restores the central memory phenotype in aging T cells. Thus, these studies help explain the mechanisms behind aging-related dysregulation of T cells' antitumor activity, which can be restored by inhibiting ceramide-dependent mitophagy.
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Affiliation(s)
- Silvia Vaena
- Departments of Biochemistry and Molecular Biology, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Paramita Chakraborty
- Department of Surgery, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Han Gyul Lee
- Departments of Biochemistry and Molecular Biology, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Alhaji H Janneh
- Departments of Biochemistry and Molecular Biology, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Mohamed Faisal Kassir
- Departments of Biochemistry and Molecular Biology, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Gyda Beeson
- College of Pharmacy, Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Zachariah Hedley
- Department of Surgery, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Ahmet Yalcinkaya
- Departments of Biochemistry and Molecular Biology, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - M Hanief Sofi
- Department of Microbiology and Immunology, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Hong Li
- Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Department of Public Health, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Monica L Husby
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA
| | - Robert V Stahelin
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA
| | - Xue-Zhong Yu
- Department of Microbiology and Immunology, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Shikhar Mehrotra
- Department of Surgery, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA
| | - Besim Ogretmen
- Departments of Biochemistry and Molecular Biology, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, Charleston, SC 29425, USA.
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7
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Shen X, Zhang L, Jiang L, Xiong W, Tang Y, Lin L, Yu T. Alteration of sphingosine-1-phosphate with aging induces contractile dysfunction of colonic smooth muscle cells via Ca 2+ -activated K + channel (BK Ca ) upregulation. Neurogastroenterol Motil 2021; 33:e14052. [PMID: 33452855 DOI: 10.1111/nmo.14052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/13/2020] [Accepted: 11/13/2020] [Indexed: 02/04/2023]
Abstract
BACKGROUND Age-associated changes alter calcium-activated potassium channel (BKCa ) expression of colon. Sphingolipids (SLs) are important cell membrane structural components; altered composition of SLs may affect BKCa expression. This study investigated the mechanism by which sphingosine-1-phosphate (S1P) contributes to age-associated contractile dysfunction. METHODS Fifty male Sprague Dawley rats of different ages were randomly assigned to five age-groups, namely 3, 6, 12, 18, and 24 months. BKCa expression, S1P levels, and phosphorylated myosin light chain (p-MLC) levels were tested in colonic tissues. In the absence and presence of S1P treatment, BKCa expression, p-MLC levels, and intracellular calcium mobilization were tested in vitro. BKCa small interfering RNA (siRNA) was used to investigate whether p-MLC expression and calcium mobilization were affected by BKCa in colonic smooth muscle cells (SMCs). The expressions of phosphorylated protein kinase B, c-Jun N-terminal kinases (JNKs), extracellular-regulated protein kinases, nuclear factor kappa-B (NF-κB), and protein kinase Cζ (PKCζ ) were examined to investigate the correlation between S1P and BKCa . KEY RESULTS Sphingosine-1-phosphate levels and sphingosine-1-phosphate receptor 2 (S1PR2) and BKCa expressions were upregulated and p-MLC expression was downregulated in the colonic tissues, age dependently. In the cultured SMCs, S1P treatment increased BKCa expression and reduced calcium concentration and p-MLC was observed. BKCa siRNA increased calcium concentration, and p-MLC levels significantly compared with control. We also showed that S1P upregulated BKCa through PKCζ , JNK, and NF-κB pathways. CONCLUSIONS AND INFERENCES In conclusion, S1P and S1PR2 participate in age-associated contractile dysfunction via BKCa upregulation through PKCζ , JNK, and NF-κB pathways.
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Affiliation(s)
- Xiaoxue Shen
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ling Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ling Jiang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wenjie Xiong
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yurong Tang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lin Lin
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ting Yu
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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8
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Heras AF, Veerappan A, Silver RB, Emala CW, Worgall TS, Perez-Zoghbi J, Worgall S. Increasing Sphingolipid Synthesis Alleviates Airway Hyperreactivity. Am J Respir Cell Mol Biol 2020; 63:690-698. [PMID: 32706610 DOI: 10.1165/rcmb.2020-0194oc] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Impaired sphingolipid synthesis is linked genetically to childhood asthma and functionally to airway hyperreactivity (AHR). The objective was to investigate whether sphingolipid synthesis could be a target for asthma therapeutics. The effects of GlyH-101 and fenretinide via modulation of de novo sphingolipid synthesis on AHR was evaluated in mice deficient in SPT (serine palmitoyl-CoA transferase), the rate-limiting enzyme of sphingolipid synthesis. The drugs were also used directly in human airway smooth-muscle and epithelial cells to evaluate changes in de novo sphingolipid metabolites and calcium release. GlyH-101 and fenretinide increased sphinganine and dihydroceramides (de novo sphingolipid metabolites) in lung epithelial and airway smooth-muscle cells, decreased the intracellular calcium concentration in airway smooth-muscle cells, and decreased agonist-induced contraction in proximal and peripheral airways. GlyH-101 also decreased AHR in SPT-deficient mice in vivo. This study identifies the manipulation of sphingolipid synthesis as a novel metabolic therapeutic strategy to alleviate AHR.
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Affiliation(s)
| | | | | | | | - Tilla S Worgall
- Department of Pathology and Cell Biology, Columbia University, New York, New York
| | | | - Stefan Worgall
- Department of Pediatrics.,Department of Genetic Medicine, and.,Drukier Institute for Children's Health, Weill Cornell Medicine, New York, New York; and
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9
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Tosetti B, Brodesser S, Brunn A, Deckert M, Blüher M, Doehner W, Anker SD, Wenzel D, Fleischmann B, Pongratz C, Peters F, Utermöhlen O, Krönke M. A tissue-specific screen of ceramide expression in aged mice identifies ceramide synthase-1 and ceramide synthase-5 as potential regulators of fiber size and strength in skeletal muscle. Aging Cell 2020; 19:e13049. [PMID: 31692231 PMCID: PMC6974707 DOI: 10.1111/acel.13049] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 09/02/2019] [Accepted: 09/20/2019] [Indexed: 12/14/2022] Open
Abstract
Loss of skeletal muscle mass is one of the most widespread and deleterious processes in aging humans. However, the mechanistic metabolic principles remain poorly understood. In the framework of a multi‐organ investigation of age‐associated changes of ceramide species, a unique and distinctive change pattern of C16:0 and C18:0 ceramide species was detected in aged skeletal muscle. Consistently, the expression of CerS1 and CerS5 mRNA, encoding the ceramide synthases (CerS) with substrate preference for C16:0 and C18:0 acyl chains, respectively, was down‐regulated in skeletal muscle of aged mice. Similarly, an age‐dependent decline of both CerS1 and CerS5 mRNA expression was observed in skeletal muscle biopsies of humans. Moreover, CerS1 and CerS5 mRNA expression was also reduced in muscle biopsies from patients in advanced stage of chronic heart failure (CHF) suffering from muscle wasting and frailty. The possible impact of CerS1 and CerS5 on muscle function was addressed by reversed genetic analysis using CerS1Δ/Δ and CerS5Δ/Δ knockout mice. Skeletal muscle from mice deficient of either CerS1 or CerS5 showed reduced caliber sizes of both slow (type 1) and fast (type 2) muscle fibers, fiber grouping, and fiber switch to type 1 fibers. Moreover, CerS1‐ and CerS5‐deficient mice exhibited reduced twitch and tetanus forces of musculus extensor digitorum longus. The findings of this study link CerS1 and CerS5 to histopathological changes and functional impairment of skeletal muscle in mice that might also play a functional role for the aging skeletal muscle and for age‐related muscle wasting disorders in humans.
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Affiliation(s)
- Bettina Tosetti
- Institute for Medical Microbiology, Immunology and Hygiene University Hospital Cologne Cologne Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Aging‐Associated Diseases (CECAD) Cologne Germany
| | - Susanne Brodesser
- Cologne Cluster of Excellence on Cellular Stress Responses in Aging‐Associated Diseases (CECAD) Cologne Germany
| | - Anna Brunn
- Department of Neuropathology Faculty of Medicine University of Cologne Cologne Germany
| | - Martina Deckert
- Department of Neuropathology Faculty of Medicine University of Cologne Cologne Germany
| | - Matthias Blüher
- Department of Medicine University of Leipzig Leipzig Germany
| | - Wolfram Doehner
- Department of Cardiology (Campus Virchow Klinikum) German Centre for Cardiovascular Research Berlin Germany
- BIH Center for Regenerative Therapies (BCRT) Charité Universitätsmedizin Berlin Berlin Germany
| | - Stefan D. Anker
- Division of Cardiology and Metabolism Department of Cardiology (Campus Virchow Klinikum) Charité Universitätsmedizin Berlin Berlin Germany
- Berlin‐Brandenburg Center for Regenerative Therapies (BCRT) Charité Universitätsmedizin Berlin Berlin Germany
| | - Daniela Wenzel
- Institute of Physiology I Medical Faculty University of Bonn Bonn Germany
| | - Bernd Fleischmann
- Institute of Physiology I Medical Faculty University of Bonn Bonn Germany
| | - Carola Pongratz
- Institute for Medical Microbiology, Immunology and Hygiene University Hospital Cologne Cologne Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Aging‐Associated Diseases (CECAD) Cologne Germany
| | - Franziska Peters
- Institute for Medical Microbiology, Immunology and Hygiene University Hospital Cologne Cologne Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Aging‐Associated Diseases (CECAD) Cologne Germany
| | - Olaf Utermöhlen
- Institute for Medical Microbiology, Immunology and Hygiene University Hospital Cologne Cologne Germany
- Center for Molecular Medicine Cologne (CMMC) Cologne Germany
| | - Martin Krönke
- Institute for Medical Microbiology, Immunology and Hygiene University Hospital Cologne Cologne Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Aging‐Associated Diseases (CECAD) Cologne Germany
- Center for Molecular Medicine Cologne (CMMC) Cologne Germany
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10
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Zhu W, Hu J, Li Y, Yang B, Guan Y, Xu C, Chen F, Chi J, Bao Y. Comparative Proteomic Analysis of Pleurotus ostreatus Reveals Great Metabolic Differences in the Cap and Stipe Development and the Potential Role of Ca 2+ in the Primordium Differentiation. Int J Mol Sci 2019; 20:ijms20246317. [PMID: 31847351 PMCID: PMC6940972 DOI: 10.3390/ijms20246317] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/06/2019] [Accepted: 12/11/2019] [Indexed: 01/08/2023] Open
Abstract
Pleurotus ostreatus is a widely cultivated edible fungus around the world. At present, studies on the developmental process of the fruiting body are limited. In our study, we compared the differentially expressed proteins (DEPs) in the stipe and cap of the fruiting body by high-throughput proteomics. GO and pathway analysis revealed the great differences in the metabolic levels, including sucrose and starch metabolism, and sphingolipid signaling and metabolism, and the differences of 16 important DEPs were validated further by qPCR analysis in expression level. In order to control the cap and stipe development, several chemical inducers were applied to the primordium of the fruiting body according to the pathway enrichment results. We found that CaCl2 can affect the primordium differentiation through inhibiting the stipe development. EGTA (ethyleneglycol bis (β-aminoethyl ether)-N,N,N′,N′-tetraacetic acid) treatment confirmed the inhibitory role of Ca2+ in the stipe development. Our study not only shows great metabolic differences during the cap and stipe development but also reveals the underlying mechanism directing the primordium differentiation in the early development of the fruiting body for the first time. Most importantly, we provide a reliable application strategy for the cultivation and improvement of the Pleurotus ostreatus, which can be an example and reference for a more edible fungus.
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Affiliation(s)
- Weiwei Zhu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China;
- Microbial Research Institute of Liaoning Province, Chaoyang 122000, China; (Y.L.); (Y.G.); (C.X.); (F.C.); (J.C.)
| | - Jinbo Hu
- Laboratory of Photosynthesis and Environment, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (J.H.); (B.Y.)
| | - Yang Li
- Microbial Research Institute of Liaoning Province, Chaoyang 122000, China; (Y.L.); (Y.G.); (C.X.); (F.C.); (J.C.)
| | - Bing Yang
- Laboratory of Photosynthesis and Environment, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (J.H.); (B.Y.)
| | - Yanli Guan
- Microbial Research Institute of Liaoning Province, Chaoyang 122000, China; (Y.L.); (Y.G.); (C.X.); (F.C.); (J.C.)
| | - Chong Xu
- Microbial Research Institute of Liaoning Province, Chaoyang 122000, China; (Y.L.); (Y.G.); (C.X.); (F.C.); (J.C.)
| | - Fei Chen
- Microbial Research Institute of Liaoning Province, Chaoyang 122000, China; (Y.L.); (Y.G.); (C.X.); (F.C.); (J.C.)
| | - Jingliang Chi
- Microbial Research Institute of Liaoning Province, Chaoyang 122000, China; (Y.L.); (Y.G.); (C.X.); (F.C.); (J.C.)
| | - Yongming Bao
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China;
- School of Food and Environmental Science and Technology, Dalian University of Technology, Panjin 12421, China
- Correspondence: ; Tel.: +86-411-8470-6344; Fax: +86-411-8470-6365
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11
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Kim YR, Lee EJ, Shin KO, Kim MH, Pewzner-Jung Y, Lee YM, Park JW, Futerman AH, Park WJ. Hepatic triglyceride accumulation via endoplasmic reticulum stress-induced SREBP-1 activation is regulated by ceramide synthases. Exp Mol Med 2019; 51:1-16. [PMID: 31676768 PMCID: PMC6825147 DOI: 10.1038/s12276-019-0340-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 08/27/2019] [Accepted: 09/25/2019] [Indexed: 12/25/2022] Open
Abstract
The endoplasmic reticulum (ER) is not only important for protein synthesis and folding but is also crucial for lipid synthesis and metabolism. In the current study, we demonstrate an important role of ceramide synthases (CerS) in ER stress and NAFLD progression. Ceramide is important in sphingolipid metabolism, and its acyl chain length is determined by a family of six CerS in mammals. CerS2 generates C22-C24 ceramides, and CerS5 or CerS6 produces C16 ceramide. To gain insight into the role of CerS in NAFLD, we used a high-fat diet (HFD)-induced NAFLD mouse model. Decreased levels of CerS2 and increased levels of CerS6 were observed in the steatotic livers of mice fed a HFD. In vitro experiments with Hep3B cells indicated the protective role of CerS2 and the detrimental role of CerS6 in the ER stress response induced by palmitate treatment. In particular, CerS6 overexpression increased sterol regulatory element-binding protein-1 (SREBP-1) cleavage with decreased levels of INSIG-1, leading to increased lipogenesis. Blocking ER stress abrogated the detrimental effects of CerS6 on palmitate-induced SREBP-1 cleavage. In accordance with the protective role of CerS2 in the palmitate-induced ER stress response, CerS2 knockdown enhanced ER stress and SREBP-1 cleavage, and CerS2 heterozygote livers exhibited a stronger ER stress response and higher triglyceride levels following HFD. Finally, treatment with a low dose of bortezomib increased hepatic CerS2 expression and protected the development of NAFLD following HFD. These results indicate that CerS and its derivatives impact hepatic ER stress and lipogenesis differently and might be therapeutic targets for NAFLD. Promoting the activity of a protective membrane protein may help limit the development of non-alcoholic fatty liver disease (NAFLD) in obesity. Stress on a key cellular organelle, the endoplasmic reticulum (ER), contributes to NAFLD progression. Woo-Jae Park at Gachon University in Incheon, Joo-Won Park at Ewha Womans University, Seoul, and co-workers across South Korea have uncovered the role of a family of ER membrane proteins called ceramide synthases (CerS) in the regulation of ER stress during disease development. The team found increased levels of CerS6 in the livers of mouse fed a high-fat diet, while CerS2 decreased. The increased C16-ceramide by CerS6 overexpression triggered excess fat formation by increasing ER stress and SREBP-1 cleavage. However, when the team enhanced the expression of CerS2 using an existing chemotherapy drug, mice were protected from developing NAFLD.
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Affiliation(s)
- Ye-Ryung Kim
- Department of Biochemistry, College of Medicine, Ewha Womans University, Seoul, 07084, Republic of Korea
| | - Eun-Ji Lee
- Department of Biochemistry, College of Medicine, Ewha Womans University, Seoul, 07084, Republic of Korea.,Department of Biochemistry, College of Medicine, Gachon University, Incheon, 21999, Republic of Korea
| | - Kyong-Oh Shin
- College of Pharmacy, Chungbuk National University, Chongju, 28644, Republic of Korea
| | - Min Hee Kim
- Department of Biochemistry, College of Medicine, Gachon University, Incheon, 21999, Republic of Korea
| | - Yael Pewzner-Jung
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Yong-Moon Lee
- College of Pharmacy, Chungbuk National University, Chongju, 28644, Republic of Korea
| | - Joo-Won Park
- Department of Biochemistry, College of Medicine, Ewha Womans University, Seoul, 07084, Republic of Korea.
| | - Anthony H Futerman
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Woo-Jae Park
- Department of Biochemistry, College of Medicine, Gachon University, Incheon, 21999, Republic of Korea. .,Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, 21999, Republic of Korea.
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12
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Magaye RR, Savira F, Hua Y, Kelly DJ, Reid C, Flynn B, Liew D, Wang BH. The role of dihydrosphingolipids in disease. Cell Mol Life Sci 2019; 76:1107-1134. [PMID: 30523364 PMCID: PMC11105797 DOI: 10.1007/s00018-018-2984-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 11/06/2018] [Accepted: 11/26/2018] [Indexed: 12/29/2022]
Abstract
Dihydrosphingolipids refer to sphingolipids early in the biosynthetic pathway that do not contain a C4-trans-double bond in the sphingoid backbone: 3-ketosphinganine (3-ketoSph), dihydrosphingosine (dhSph), dihydrosphingosine-1-phosphate (dhS1P) and dihydroceramide (dhCer). Recent advances in research related to sphingolipid biochemistry have shed light on the importance of sphingolipids in terms of cellular signalling in health and disease. However, dihydrosphingolipids have received less attention and research is lacking especially in terms of their molecular mechanisms of action. This is despite studies implicating them in the pathophysiology of disease, for example dhCer in predicting type 2 diabetes in obese individuals, dhS1P in cardiovascular diseases and dhSph in hepato-renal toxicity. This review gives a comprehensive summary of research in the last 10-15 years on the dihydrosphingolipids, 3-ketoSph, dhSph, dhS1P and dhCer, and their relevant roles in different diseases. It also highlights gaps in research that could be of future interest.
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Affiliation(s)
- Ruth R Magaye
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Feby Savira
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Yue Hua
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Darren J Kelly
- Department of Medicine, St Vincent's Hospital, University of Melbourne, Fitzroy, VIC, Australia
| | - Christopher Reid
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Bernard Flynn
- Australian Translational Medicinal Chemistry Facility, Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Australia
| | - Danny Liew
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Bing H Wang
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia.
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13
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Liu Y, Hu Y, Wang G, Li A, Li K, Zheng Q, Qin X. Huangqi Jianzhong Tang ameliorated phospholipase A2 and glycerophospholipids metabolism against chronic atrophic gastritis rats. J LIQ CHROMATOGR R T 2019. [DOI: 10.1080/10826076.2018.1562941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- YueTao Liu
- Modern Research Center for Traditional Chinese Medicine of Shanxi University, Taiyuan, P. R. China
| | - YingHuan Hu
- Modern Research Center for Traditional Chinese Medicine of Shanxi University, Taiyuan, P. R. China
- College of Chemistry and Chemical Engineering of Shanxi University, Taiyuan, P. R. China
| | - GuoHong Wang
- Department of Pharmacy, Shanxi Provincial Hospital of Traditional Chinese Medicine, Taiyuan, P. R. China
| | - AiPing Li
- Modern Research Center for Traditional Chinese Medicine of Shanxi University, Taiyuan, P. R. China
| | - Ke Li
- Modern Research Center for Traditional Chinese Medicine of Shanxi University, Taiyuan, P. R. China
| | - QingXia Zheng
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P. R. China
| | - XueMei Qin
- Modern Research Center for Traditional Chinese Medicine of Shanxi University, Taiyuan, P. R. China
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14
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Suzuki S, Tanaka A, Nakamura H, Murayama T. Knockout of Ceramide Kinase Aggravates Pathological and Lethal Responses in Mice with Experimental Colitis. Biol Pharm Bull 2018; 41:797-805. [DOI: 10.1248/bpb.b18-00051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Satomi Suzuki
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University
| | - Ai Tanaka
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University
| | - Hiroyuki Nakamura
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University
| | - Toshihiko Murayama
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University
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15
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Zhang ZY, Qian LL, Wang RX. Molecular Mechanisms Underlying Renin-Angiotensin-Aldosterone System Mediated Regulation of BK Channels. Front Physiol 2017; 8:698. [PMID: 28955251 PMCID: PMC5601423 DOI: 10.3389/fphys.2017.00698] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 08/30/2017] [Indexed: 12/21/2022] Open
Abstract
Large-conductance calcium-activated potassium channels (BK channels) belong to a family of Ca2+-sensitive voltage-dependent potassium channels and play a vital role in various physiological activities in the human body. The renin-angiotensin-aldosterone system is acknowledged as being vital in the body's hormone system and plays a fundamental role in the maintenance of water and electrolyte balance and blood pressure regulation. There is growing evidence that the renin-angiotensin-aldosterone system has profound influences on the expression and bioactivity of BK channels. In this review, we focus on the molecular mechanisms underlying the regulation of BK channels mediated by the renin-angiotensin-aldosterone system and its potential as a target for clinical drugs.
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Affiliation(s)
- Zhen-Ye Zhang
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical UniversityWuxi, China
| | - Ling-Ling Qian
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical UniversityWuxi, China
| | - Ru-Xing Wang
- Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical UniversityWuxi, China
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16
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Wang S, Bao YR, Li TJ, Yu T, Chang X, Yang GL, Meng XS. Mechanism of Fructus Aurantii Flavonoids Promoting Gastrointestinal Motility: From Organic and Inorganic Endogenous Substances Combination Point of View. Pharmacogn Mag 2017; 13:372-377. [PMID: 28839359 PMCID: PMC5551352 DOI: 10.4103/pm.pm_179_16] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 06/17/2016] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Fructus Aurantii (FA) derived from the dried, and unripe fruit of Citrus aurantium L. is one of the commonly used traditional Chinese medicines to treat gastrointestinal motility dysfunction diseases. According to the literature research, FA flavonoids (FAF) are important active ingredients of FA promoting gastrointestinal motility, but the exact material basis and mechanism of action are still not very clear. OBJECTIVE This experiment was designed to illustrate the material basis of FAF promoting gastrointestinal motility and explore the mechanism of action from an organic and inorganic combination point of view. MATERIALS AND METHODS In this experiment, high-performance liquid chromatography (HPLC) method was used to analyze the composition and content of FAF. Based on the prominent prokinetic effect of FAF on mice, the mechanism of action was speculated through a combination of HPLC coupled with quadrupole time-of-flight mass spectrometry (HPLC-QTOF-MS) and inductively coupled plasma mass spectrometry (ICP-MS). RESULTS With the method of HPLC, ten dominating components of FAF including neoeriocitrin, narirutin, rhoifolin, naringin, hesperidin, neohesperidin, neoponcirin, naringenin, hesperetin, and nobiletin accounting for more than 86% of FAF were identified. Combined HPLC-QTOF-MS with ICP-MS, the endogenous substances with difference in the blood of mice were analyzed, in which 4-dimethylallyltryptophan, corticosterone, phytosphingosine, sphinganine, LysoPC (20:4(5Z, 8Z, 11Z, 14Z)), LysoPC(18:2 (9Z, 12Z)), and Ca2+, Mg2+, Zn2+ metal ions had significant changes, involving tryptophan metabolism, corticosterone metabolism, sphingolipid metabolism, and other pathways. CONCLUSION The results preliminarily elaborated the mechanism of FAF promoting gastrointestinal motility from an organic and inorganic point of view, which provide valuable information for researching and developing new multi-component Chinese medicine curing gastrointestinal underpower associated diseases. SUMMARY Fructus Aurantii flavonoids are one of the main components of Fructus Aurantii that possess prominent gastrointestinal motility promoting efficacyThe mainly material basis of Fructus Aurantii flavonoids promoting gastrointestinal motility were neoeriocitrin, narirutin, rhoifolin, naringin, hesperidin, neohesperidin, neoponcirin, naringenin, hesperetin, and nobiletinFructus Aurantii flavonoids can regulate the content of 4-dimethylallyltryptophan, corticosterone, phytosphingosine, sphinganine, LysoPC (20:4(5Z, 8Z, 11Z, 14Z)), LysoPC.(18:2(9Z, 12Z)) and Ca2+, Mg2+, Zn2+-metal ions, through tryptophan metabolism, corticosterone metabolism, sphingolipid metabolism, and other pathways to present its gastrointestinal motility promoting efficacy. Abbreviations used: FA: Fructus Aurantii; FAF: Fructus Aurantii flavonoids; HPLC: High performance liquid chromatography; HPLC-QTOF-MS: High performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry; ICP-MS: Inductively coupled plasma mass spectrometry; PCA: Principal components analysis; CG: Control group; FAFLG: Low-dosage group of Fructus Aurantii flavonoids; FAFMG: Middle-dosage group of Fructus Aurantii flavonoids; FAFHG: High-dosage group of Fructus Aurantii flavonoids; DPG: Domperidone group.
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Affiliation(s)
- Shuai Wang
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China.,Component Medicine Engineering Research Center of Liaoning Province, Dalian 116600, China.,Liaoning Province Modern Chinese Medicine Research Engineering Laboratory, Dalian 116600, China.,Liaoning University of Traditional Chinese Medicine-Agilent Technologies Modern TCM and Multi-Omics Research Collaboration Lab, Dalian 116600, China
| | - Yong-Rui Bao
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China.,Component Medicine Engineering Research Center of Liaoning Province, Dalian 116600, China.,Liaoning Province Modern Chinese Medicine Research Engineering Laboratory, Dalian 116600, China.,Liaoning University of Traditional Chinese Medicine-Agilent Technologies Modern TCM and Multi-Omics Research Collaboration Lab, Dalian 116600, China
| | - Tian-Jiao Li
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China.,Component Medicine Engineering Research Center of Liaoning Province, Dalian 116600, China.,Liaoning Province Modern Chinese Medicine Research Engineering Laboratory, Dalian 116600, China.,Liaoning University of Traditional Chinese Medicine-Agilent Technologies Modern TCM and Multi-Omics Research Collaboration Lab, Dalian 116600, China
| | - Ting Yu
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Xin Chang
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Guan-Lin Yang
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Xian-Sheng Meng
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China.,Component Medicine Engineering Research Center of Liaoning Province, Dalian 116600, China.,Liaoning Province Modern Chinese Medicine Research Engineering Laboratory, Dalian 116600, China.,Liaoning University of Traditional Chinese Medicine-Agilent Technologies Modern TCM and Multi-Omics Research Collaboration Lab, Dalian 116600, China
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17
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Rieck M, Kremser C, Jobin K, Mettke E, Kurts C, Gräler M, Willecke K, Kolanus W. Ceramide synthase 2 facilitates S1P-dependent egress of thymocytes into the circulation in mice. Eur J Immunol 2017; 47:677-684. [PMID: 28198542 DOI: 10.1002/eji.201646623] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 01/17/2017] [Accepted: 02/06/2017] [Indexed: 12/28/2022]
Abstract
Well-defined gradients of the lipid mediator sphingosine-1-phosphate (S1P) direct chemotactic egress of mature thymocytes from the thymus into the circulation. Although it is known that these gradients result from low S1P levels in the thymic parenchyma and high S1P concentrations at the exit sites and in the plasma, the biochemical mechanisms that regulate these differential S1P levels remain unclear. Several studies demonstrated that ceramide synthase 2 (Cers2) regulates the levels of the S1P precursor sphingosine. We, therefore, investigated whether Cers2 is involved in the regulation of S1P gradients and S1P-dependent egress into the circulation. By analyzing Cers2-deficient mice, we demonstrate that Cers2 limits the levels of S1P in thymus and blood to maintain functional S1P gradients that mediate thymocyte emigration into the circulation. This function is specific for Cers2, as we also show that Cers4 is not involved in the regulation of thymic egress. Our study identified Cers2 as an important regulator of S1P-dependent thymic egress, and thus contributes to the understanding of how S1P gradients are maintained in vivo.
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Affiliation(s)
- Michael Rieck
- Molecular Immunology and Cell Biology, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Christiane Kremser
- Molecular Genetics & Cell Biology, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Katarzyna Jobin
- Institute of Experimental Immunology, University Hospital of Bonn, Bonn, Germany
| | - Elisabeth Mettke
- Institute of Experimental Immunology, University Hospital of Bonn, Bonn, Germany
| | - Christian Kurts
- Institute of Experimental Immunology, University Hospital of Bonn, Bonn, Germany
| | - Markus Gräler
- Department of Anesthesiology and Intensive Care Medicine, Center for Sepsis Control and Care (CSCC), and the Center for Molecular Biomedicine (CMB), Jena University Hospital, Jena, Germany
| | - Klaus Willecke
- Molecular Genetics & Cell Biology, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Waldemar Kolanus
- Molecular Immunology and Cell Biology, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
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18
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Yu T, Zheng Y, Wang Y, Xiong W, Lin L. Advanced glycation end products interfere with gastric smooth muscle contractile marker expression via the AGE/RAGE/NF-κB pathway. Exp Mol Pathol 2017; 102:7-14. [PMID: 27939576 DOI: 10.1016/j.yexmp.2016.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/25/2016] [Accepted: 12/05/2016] [Indexed: 11/23/2022]
Abstract
Excessive production of advanced glycation end products (AGE) has been implicated in the pathogenesis of diabetic complications. Smooth muscle (SM) phenotype transition is involved in diabetes-associated gastric motility dysfunction. We investigated whether AGE interfere with gastric antral SM contractile marker expression. Sixteen Sprague-Dawley rats were randomly divided into control and streptozotocin-induced diabetic groups. Sixteen weeks after streptozotocin administration, gastric antral SM strip contractility in the groups were measured. The gastric tissue expression of AGE was tested. Primary cultured gastric smooth muscle cells (SMCs) were used in complementary in vitro studies. In the presence and absence of AGE, SMCs were transfected with myocardin plasmid or treated with nuclear factor-κB (NF-κB) inhibitor or anti-RAGE antibody. Diabetic rats showed weakness of SM strip contractility and decreased expression of SM contractile marker genes (myosin heavy chains [MHC], α-actin, calponin) as compared with the control group. Gastric antral SM layer Nε-(carboxymethyl) lysine (CML) level, the major AGE compound, were increased in the diabetic rats. AGE downregulated SM contractile markers and myocardin expression in a concentration-dependent manner. Myocardin overexpression prevented these results. AGE treatment activated NF-κB in SMCs. The NF-κB inhibitor BAY 11-7082 and anti-RAGE antibody blocked the effects of AGE on myocardin downregulation. AGE may induce the development of gastric dysmotility by downregulating SM contractile proteins and myocardin expression via the AGE/RAGE/NF-κB pathway.
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MESH Headings
- Actins/genetics
- Actins/metabolism
- Animals
- Biomarkers/metabolism
- Blotting, Western
- Calcium-Binding Proteins/genetics
- Calcium-Binding Proteins/metabolism
- Cells, Cultured
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/physiopathology
- Dose-Response Relationship, Drug
- Gastric Emptying
- Gene Expression/drug effects
- Glycation End Products, Advanced/pharmacology
- Male
- Microfilament Proteins/genetics
- Microfilament Proteins/metabolism
- Muscle Contraction
- Muscle, Smooth/drug effects
- Muscle, Smooth/metabolism
- Muscle, Smooth/physiopathology
- Myocytes, Smooth Muscle/metabolism
- Myosin Heavy Chains/genetics
- Myosin Heavy Chains/metabolism
- NF-kappa B/metabolism
- Nuclear Proteins/genetics
- Nuclear Proteins/metabolism
- Pyloric Antrum/metabolism
- Pyloric Antrum/physiopathology
- Random Allocation
- Rats, Sprague-Dawley
- Receptor for Advanced Glycation End Products/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Signal Transduction/drug effects
- Trans-Activators/genetics
- Trans-Activators/metabolism
- Calponins
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Affiliation(s)
- Ting Yu
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, China
| | - Yongping Zheng
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, China
| | - Yun Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, China
| | - Wenjie Xiong
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, China
| | - Lin Lin
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, No. 300 of Guangzhou Road, Nanjing, China.
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19
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Singh P. Budding Yeast: An Ideal Backdrop for In vivo Lipid Biochemistry. Front Cell Dev Biol 2017; 4:156. [PMID: 28119915 PMCID: PMC5222803 DOI: 10.3389/fcell.2016.00156] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 12/27/2016] [Indexed: 12/29/2022] Open
Abstract
Biological membranes are non-covalent assembly of lipids and proteins. Lipids play critical role in determining membrane physical properties and regulate the function of membrane associated proteins. Budding yeast Saccharomyces cerevisiae offers an exceptional advantage to understand the lipid-protein interactions since lipid metabolism and homeostasis are relatively simple and well characterized as compared to other eukaryotes. In addition, a vast array of genetic and cell biological tools are available to determine and understand the role of a particular lipid in various lipid metabolic disorders. Budding yeast has been instrumental in delineating mechanisms related to lipid metabolism, trafficking and their localization in different subcellular compartments at various cell cycle stages. Further, availability of tools and enormous potential for the development of useful reagents and novel technologies to localize a particular lipid in different subcellular compartments in yeast makes it a formidable system to carry out lipid biology. Taken together, yeast provides an outstanding backdrop to characterize lipid metabolic changes under various physiological conditions.
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Affiliation(s)
- Pushpendra Singh
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of MedicineBaltimore, MD, USA; Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins UniversityBaltimore, MD, USA
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20
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Kim MH, Ahn HK, Lee EJ, Kim SJ, Kim YR, Park JW, Park WJ. Hepatic inflammatory cytokine production can be regulated by modulating sphingomyelinase and ceramide synthase 6. Int J Mol Med 2016; 39:453-462. [PMID: 28035360 DOI: 10.3892/ijmm.2016.2835] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 12/19/2016] [Indexed: 11/06/2022] Open
Abstract
Chronic inflammation is associated with the pathogenesis of type 2 diabetes and diabetic complications, and palmitate has been nominated as a candidate for the molecular link between these disorders. Recently, a crucial role of ceramide in inflammation and metabolic diseases has been reported. Therefore, in this study, we investigated whether ceramide formation is involved in palmitate‑induced hepatic inflammation in vitro and in vivo. Ceramide can be generated either by the de novo pathway or by sphingomyelin degradation, and six different ceramide synthases (CerS) determine the specific acyl chain length of ceramide in mammals. We examined the roles of CerS and sphingomyelinases (SMases) in the secretion of inflammatory cytokines, such as tumour necrosis factor (TNF)‑α, interleukin (IL)‑1β, and IL‑6 in Hep3B cells. Among the six CerS, CerS6 overexpression uniquely elevated TNF‑α secretion via p38 mitogen‑activated protein kinase (MAPK) activation. In addition, the treatment of CerS6 overexpressing cells with palmitate synergistically increased cytokine secretion. However, neither palmitate treatment nor CerS6 overexpression altered lipopolysaccharide (LPS)-induced cytokine secretion. Instead, the activation of acidic (A)‑SMase was involved in LPS‑induced cytokine secretion via the MAPK/NF‑κB pathway. Finally, the suppression of ceramide generation via A‑SMase inhibition or de novo ceramide synthesis decreased high‑fat diet‑induced hepatic cytokine production in vivo. On the whole, our results revealed that CerS6 played a role in TNF‑α secretion, and palmitate augmented inflammatory responses in pathophysiological conditions in which CerS6 is overexpressed. In addition, A‑SMase activation was shown to be involved in LPS‑induced inflammatory processes, suggesting that the modulation of CerS6 and A‑SMase may be a therapeutic target for controlling hepatic inflammation.
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Affiliation(s)
- Min Hee Kim
- Department of Biochemistry, School of Medicine, Gachon University, Incheon 406‑799, Republic of Korea
| | - Hee Kyung Ahn
- Division of Haematology and Oncology, Department of Internal Medicine, Gachon University Gil Medical Centre, Incheon 405‑760, Republic of Korea
| | - Eun-Ji Lee
- Department of Biochemistry, School of Medicine, Gachon University, Incheon 406‑799, Republic of Korea
| | - Su-Jeong Kim
- Department of Biochemistry, School of Medicine, Gachon University, Incheon 406‑799, Republic of Korea
| | - Ye-Ryung Kim
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul 158‑710, Republic of Korea
| | - Joo-Won Park
- Department of Biochemistry, School of Medicine, Ewha Womans University, Seoul 158‑710, Republic of Korea
| | - Woo-Jae Park
- Department of Biochemistry, School of Medicine, Gachon University, Incheon 406‑799, Republic of Korea
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21
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Choi S, Kim JA, Li H, Shin K, Oh GT, Lee Y, Oh S, Pewzner‐Jung Y, Futerman AH, Suh SH. KCa 3.1 upregulation preserves endothelium-dependent vasorelaxation during aging and oxidative stress. Aging Cell 2016; 15:801-10. [PMID: 27363720 PMCID: PMC5013018 DOI: 10.1111/acel.12502] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2016] [Indexed: 01/24/2023] Open
Abstract
Endothelial oxidative stress develops with aging and reactive oxygen species impair endothelium-dependent relaxation (EDR) by decreasing nitric oxide (NO) availability. Endothelial KCa 3.1, which contributes to EDR, is upregulated by H2 O2 . We investigated whether KCa 3.1 upregulation compensates for diminished EDR to NO during aging-related oxidative stress. Previous studies identified that the levels of ceramide synthase 5 (CerS5), sphingosine, and sphingosine 1-phosphate were increased in aged wild-type and CerS2 mice. In primary mouse aortic endothelial cells (MAECs) from aged wild-type and CerS2 null mice, superoxide dismutase (SOD) was upregulated, and catalase and glutathione peroxidase 1 (GPX1) were downregulated, when compared to MAECs from young and age-matched wild-type mice. Increased H2 O2 levels induced Fyn and extracellular signal-regulated kinases (ERKs) phosphorylation and KCa 3.1 upregulation. Catalase/GPX1 double knockout (catalase(-/-) /GPX1(-/-) ) upregulated KCa 3.1 in MAECs. NO production was decreased in aged wild-type, CerS2 null, and catalase(-/-) /GPX1(-/-) MAECs. However, KCa 3.1 activation-induced, N(G) -nitro-l-arginine-, and indomethacin-resistant EDR was increased without a change in acetylcholine-induced EDR in aortic rings from aged wild-type, CerS2 null, and catalase(-/-) /GPX1(-/-) mice. CerS5 transfection or exogenous application of sphingosine or sphingosine 1-phosphate induced similar changes in levels of the antioxidant enzymes and upregulated KCa 3.1. Our findings suggest that, during aging-related oxidative stress, SOD upregulation and downregulation of catalase and GPX1, which occur upon altering the sphingolipid composition or acyl chain length, generate H2 O2 and thereby upregulate KCa 3.1 expression and function via a H2 O2 /Fyn-mediated pathway. Altogether, enhanced KCa 3.1 activity may compensate for decreased NO signaling during vascular aging.
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Affiliation(s)
- Shinkyu Choi
- Department of Physiology Medical School Ewha Womans University Seoul South Korea
| | - Ji Aee Kim
- Department of Physiology Medical School Ewha Womans University Seoul South Korea
| | - Hai‐yan Li
- Department of Physiology Medical School Ewha Womans University Seoul South Korea
| | - Kyong‐Oh Shin
- College of Pharmacy and MRC Chungbuk National University Chongju South Korea
| | - Goo Taeg Oh
- Department of Life Sciences Ewha Womans University Seoul South Korea
| | - Yong‐Moon Lee
- College of Pharmacy and MRC Chungbuk National University Chongju South Korea
| | - Seikwan Oh
- Department of Molecular Medicine Medical School Ewha Womans University Seoul South Korea
| | - Yael Pewzner‐Jung
- Department of Biological Chemistry Weizmann Institute of Science Rehovot Israel
| | - Anthony H. Futerman
- Department of Biological Chemistry Weizmann Institute of Science Rehovot Israel
| | - Suk Hyo Suh
- Department of Physiology Medical School Ewha Womans University Seoul South Korea
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