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Yousf S, Batra HS, Jha RM, Sardesai DM, Ananthamohan K, Chugh J, Sharma S. Identification of potential serum biomarkers associated with HbA1c levels in Indian type 2 diabetic subjects using NMR-based metabolomics. Clin Chim Acta 2024; 557:117857. [PMID: 38484908 DOI: 10.1016/j.cca.2024.117857] [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: 11/30/2023] [Revised: 02/29/2024] [Accepted: 03/02/2024] [Indexed: 03/25/2024]
Abstract
BACKGROUND The prevalence of type 2 diabetes mellitus (T2DM), a progressive metabolic disorder characterized by chronic hyperglycemia and the development of insulin resistance, has increased globally, with worrying statistics coming from children, adolescents, and young adults from developing countries like India. Here, we investigated unique circulating metabolic signatures associated with prediabetes and T2DM in an Indian cohort using NMR-based metabolomics. MATERIALS AND METHODS The study subjects included healthy volunteers (N = 101), prediabetic subjects (N = 75), and T2DM patients (N = 108). Serum metabolic profiling was performed using 1H NMR spectroscopy and major perturbed metabolites were identified by multivariate analysis and receiver operating characteristic (ROC) modules. RESULTS Of the 36 aqueous abundant metabolites, 24 showed a statistically significant difference between healthy volunteers, prediabetics, and established T2DM subjects. On performing multivariate ROC curve analysis with 5 commonly dysregulated metabolites (namely, glucose, pyroglutamate, o-phosphocholine, serine, and methionine) in prediabetes and T2DM, AUC values obtained were 0.96 (95 % confidence interval (CI) = 0.93, 0.98) for T2DM; and 0.88 (95 % CI = 0.81, 0.93) for prediabetic subjects, respectively. CONCLUSION We propose that the identified metabolite panel can be used in the future as a biomarker for clinical diagnosis, patient surveillance, and for predicting individuals at risk for developing diabetes.
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Affiliation(s)
- Saleem Yousf
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune 411008, India; Division of Cancer Imaging Research, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Hitender S Batra
- Department of Biochemistry, Armed Forces Medical College (AFMC), Wanowrie, Pune 411040, India; Department of Biochemistry, Symbiosis Medical College for Women, Pune 412115, India.
| | - Rakesh M Jha
- Department of Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune 411007, India
| | - Devika M Sardesai
- Department of Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune 411007, India
| | - Kalyani Ananthamohan
- Department of Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune 411007, India
| | - Jeetender Chugh
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Shilpy Sharma
- Department of Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune 411007, India.
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2
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Zhu Q, Yuan C, Dong X, Wang Y, Li B, Tu B, Chen W, Xu X, Gong W, Xiao W, Ding Y, Hu L, Li W, Lu G. Bile acid metabolomics identifies chenodeoxycholic acid as a therapeutic agent for pancreatic necrosis. Cell Rep Med 2023; 4:101304. [PMID: 38035885 PMCID: PMC10772342 DOI: 10.1016/j.xcrm.2023.101304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/15/2023] [Accepted: 11/02/2023] [Indexed: 12/02/2023]
Abstract
Bile acids are altered and associated with prognosis in patients with acute pancreatitis (AP). Here, we conduct targeted metabolomic analyses to detect bile acids changes in patients during the acute (n = 326) and the recovery (n = 133) phases of AP, as well as in healthy controls (n = 60). Chenodeoxycholic acid (CDCA) decreases in the acute phase, increases in the recovery phase, and is associated with pancreatic necrosis. CDCA and its derivative obeticholic acid exhibit a protective effect against acinar cell injury in vitro and pancreatic necrosis in murine models, and RNA sequencing reveals that the oxidative phosphorylation pathway is mainly involved. Moreover, we find that overexpression of farnesoid X receptor (FXR, CDCA receptor) inhibits pancreatic necrosis, and interfering expression of FXR exhibits an opposite phenotype in mice. Our results possibly suggest that targeting CDCA is a potential strategy for the treatment of acinar cell necrosis in AP, but further verification is needed.
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Affiliation(s)
- Qingtian Zhu
- Pancreatic Center, Department of Gastroenterology, Yangzhou Key Laboratory of Pancreatic Disease, Institute of Digestive Diseases, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Chenchen Yuan
- Pancreatic Center, Department of Gastroenterology, Yangzhou Key Laboratory of Pancreatic Disease, Institute of Digestive Diseases, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Xiaowu Dong
- Pancreatic Center, Department of Gastroenterology, Yangzhou Key Laboratory of Pancreatic Disease, Institute of Digestive Diseases, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Yaodong Wang
- Department of Gastroenterology, Kunshan Hospital of Traditional Chinese Medicine, Kunshan Affiliated Hospital of Nanjing University of Chinese Medicine, Kunshan, China
| | - Baiqiang Li
- Department of Critical Care Medicine, Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Bo Tu
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Weiwei Chen
- Department of Gastroenterology, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Xingmeng Xu
- Pancreatic Center, Department of Gastroenterology, Yangzhou Key Laboratory of Pancreatic Disease, Institute of Digestive Diseases, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Weijuan Gong
- Pancreatic Center, Department of Gastroenterology, Yangzhou Key Laboratory of Pancreatic Disease, Institute of Digestive Diseases, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Weiming Xiao
- Pancreatic Center, Department of Gastroenterology, Yangzhou Key Laboratory of Pancreatic Disease, Institute of Digestive Diseases, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Yanbing Ding
- Pancreatic Center, Department of Gastroenterology, Yangzhou Key Laboratory of Pancreatic Disease, Institute of Digestive Diseases, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Lianghao Hu
- Department of Gastroenterology, Changhai Hospital, The Second Military Medical University, Shanghai, China.
| | - Weiqin Li
- Department of Critical Care Medicine, Research Institute of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China.
| | - Guotao Lu
- Pancreatic Center, Department of Gastroenterology, Yangzhou Key Laboratory of Pancreatic Disease, Institute of Digestive Diseases, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China.
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3
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Abstract
Amino acid dysregulation has emerged as an important driver of disease progression in various contexts. l-Serine lies at a central node of metabolism, linking carbohydrate metabolism, transamination, glycine, and folate-mediated one-carbon metabolism to protein synthesis and various downstream bioenergetic and biosynthetic pathways. l-Serine is produced locally in the brain but is sourced predominantly from glycine and one-carbon metabolism in peripheral tissues via liver and kidney metabolism. Compromised regulation or activity of l-serine synthesis and disposal occurs in the context of genetic diseases as well as chronic disease states, leading to low circulating l-serine levels and pathogenesis in the nervous system, retina, heart, and aging muscle. Dietary interventions in preclinical models modulate sensory neuropathy, retinopathy, tumor growth, and muscle regeneration. A serine tolerance test may provide a quantitative readout of l-serine homeostasis that identifies patients who may be susceptible to neuropathy or responsive to therapy.
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Affiliation(s)
- Michal K Handzlik
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California, USA; ,
| | - Christian M Metallo
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California, USA; ,
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4
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Rosarda JD, Giles S, Harkins-Perry S, Mills EA, Friedlander M, Wiseman RL, Eade KT. Imbalanced unfolded protein response signaling contributes to 1-deoxysphingolipid retinal toxicity. Nat Commun 2023; 14:4119. [PMID: 37433773 DOI: 10.1038/s41467-023-39775-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 06/23/2023] [Indexed: 07/13/2023] Open
Abstract
The accumulation of atypical, cytotoxic 1-deoxysphingolipids (1-dSLs) has been linked to retinal diseases such as diabetic retinopathy and Macular Telangiectasia Type 2. However, the molecular mechanisms by which 1-dSLs induce toxicity in retinal cells remain poorly understood. Here, we integrate bulk and single-nucleus RNA-sequencing to define biological pathways that modulate 1-dSL toxicity in human retinal organoids. Our results demonstrate that 1-dSLs differentially activate signaling arms of the unfolded protein response (UPR) in photoreceptor cells and Müller glia. Using a combination of pharmacologic activators and inhibitors, we show that sustained PERK signaling through the integrated stress response (ISR) and deficiencies in signaling through the protective ATF6 arm of the UPR are implicated in 1-dSL-induced photoreceptor toxicity. Further, we demonstrate that pharmacologic activation of ATF6 mitigates 1-dSL toxicity without impacting PERK/ISR signaling. Collectively, our results identify new opportunities to intervene in 1-dSL linked diseases through targeting different arms of the UPR.
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Affiliation(s)
- Jessica D Rosarda
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Sarah Giles
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
- Lowy Medical Research Institute, La Jolla, CA, 92037, USA
| | - Sarah Harkins-Perry
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
- Lowy Medical Research Institute, La Jolla, CA, 92037, USA
| | - Elizabeth A Mills
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
- Lowy Medical Research Institute, La Jolla, CA, 92037, USA
| | - Martin Friedlander
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
- Lowy Medical Research Institute, La Jolla, CA, 92037, USA
| | - R Luke Wiseman
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Kevin T Eade
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA.
- Lowy Medical Research Institute, La Jolla, CA, 92037, USA.
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5
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Zarini S, Zemski Berry KA, Kahn DE, Garfield A, Perreault L, Kerege A, Bergman BC. Deoxysphingolipids: Atypical Skeletal Muscle Lipids Related to Insulin Resistance in Humans That Decrease Insulin Sensitivity In Vitro. Diabetes 2023; 72:884-897. [PMID: 37186949 PMCID: PMC10281238 DOI: 10.2337/db22-1018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 04/19/2023] [Indexed: 05/17/2023]
Abstract
Sphingolipids are thought to promote skeletal muscle insulin resistance. Deoxysphingolipids (dSLs) are atypical sphingolipids that are increased in the plasma of individuals with type 2 diabetes and cause β-cell dysfunction in vitro. However, their role in human skeletal muscle is unknown. We found that dSL species are significantly elevated in muscle of individuals with obesity and type 2 diabetes compared with athletes and lean individuals and are inversely related to insulin sensitivity. Furthermore, we observed a significant reduction in muscle dSL content in individuals with obesity who completed a combined weight loss and exercise intervention. Increased dSL content in primary human myotubes caused a decrease in insulin sensitivity associated with increased inflammation, decreased AMPK phosphorylation, and altered insulin signaling. Our findings reveal a central role for dSL in human muscle insulin resistance and suggest dSLs as therapeutic targets for the treatment and prevention of type 2 diabetes. ARTICLE HIGHLIGHTS Deoxysphingolipids (dSLs) are atypical sphingolipids elevated in the plasma of individuals with type 2 diabetes, and their role in muscle insulin resistance has not been investigated. We evaluated dSL in vivo in skeletal muscle from cross-sectional and longitudinal insulin-sensitizing intervention studies and in vitro in myotubes manipulated to synthesize higher dSLs. dSLs were increased in the muscle of people with insulin resistance, inversely correlated to insulin sensitivity, and significantly decreased after an insulin-sensitizing intervention; increased intracellular dSL concentrations cause myotubes to become more insulin resistant. Reduction of muscle dSL levels is a potential novel therapeutic target to prevent/treat skeletal muscle insulin resistance.
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Affiliation(s)
- Simona Zarini
- Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Karin A. Zemski Berry
- Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Darcy E. Kahn
- Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Amanda Garfield
- Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Leigh Perreault
- Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Anna Kerege
- Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Bryan C. Bergman
- Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
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6
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He L, Ding Y, Zhou X, Li T, Yin Y. Serine signaling governs metabolic homeostasis and health. Trends Endocrinol Metab 2023; 34:361-372. [PMID: 36967366 DOI: 10.1016/j.tem.2023.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/02/2023] [Accepted: 03/02/2023] [Indexed: 05/12/2023]
Abstract
Serine has functions that are involved in metabolic homeostasis and health in pathological or stressful situations. Notably, the de novo serine synthesis pathway (SSP) plays a vital role in targeted regulation of immune responses, cell proliferation, and lipid/protein metabolism. The presentation of serine residues derived from SSP may be a signal of stress and provide novel insights into the relationship between metabolic homeostasis and diseases. Here, we summarize the current trends in understanding the regulatory mechanisms of serine metabolism, discuss how serine signaling governs metabolic and antistress processes, including oxidative stress, immunity, energy and lipid metabolism, intestinal microbiota, and the neurological system. We present a possible framework by which serine metabolism maintains metabolic homeostasis and treats human diseases.
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Affiliation(s)
- Liuqin He
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, College of Life Sciences, Hunan Normal University, Changsha 410081, China; CAS Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Processes, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha 410125, China.
| | - Yaqiong Ding
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, College of Life Sciences, Hunan Normal University, Changsha 410081, China; CAS Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Processes, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha 410125, China
| | - Xihong Zhou
- CAS Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Processes, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha 410125, China
| | - Tiejun Li
- CAS Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Processes, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha 410125, China.
| | - Yulong Yin
- CAS Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Processes, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha 410125, China.
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7
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Casu A, Grippo PJ, Wasserfall C, Sun Z, Linsley PS, Hamerman JA, Fife BT, Lacy-Hulbert A, Toledo FGS, Hart PA, Papachristou GI, Bellin MD, Yadav D, Laughlin MR, Goodarzi MO, Speake C. Evaluating the Immunopathogenesis of Diabetes After Acute Pancreatitis in the Diabetes RElated to Acute Pancreatitis and Its Mechanisms Study: From the Type 1 Diabetes in Acute Pancreatitis Consortium. Pancreas 2022; 51:580-585. [PMID: 36206462 PMCID: PMC9555855 DOI: 10.1097/mpa.0000000000002076] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
ABSTRACT The association between acute pancreatitis (AP) and diabetes mellitus (DM) has long been established, with the initial descriptions of AP patients presenting with DM after a bout of AP published in the 1940s and 50s. However, the potential mechanisms involved, particularly those components related to the immune system, have not been well defined. The Diabetes RElated to Acute pancreatitis and its Mechanisms (DREAM) study is a multicenter clinical study designed to understand the frequency and phenotype of DM developing after AP. This article describes one objective of the DREAM study: to determine the immunologic mechanisms of DM after AP, including the contribution of β-cell autoimmunity. This component of the study will assess the presence of islet autoimmunity, as well as the magnitude and kinetics of the innate and adaptive immune response at enrollment and during longitudinal follow-up after 1 or more episodes of AP. Finally, DREAM will evaluate the relationship between immune features, DM development, and pancreatitis etiology and severity.
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Affiliation(s)
- Anna Casu
- From the Translational Research Institute, AdventHealth Orlando, Orlando, FL
| | - Paul J Grippo
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Illinois-Chicago, Chicago, IL
| | - Clive Wasserfall
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida Diabetes Institute, Gainesville, FL
| | - Zhaoli Sun
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Peter S Linsley
- Center for Systems Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA
| | - Jessica A Hamerman
- Center for Fundamental Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA
| | - Brian T Fife
- Department of Medicine, Center for Immunology, University of Minnesota, Minneapolis, MN
| | - Adam Lacy-Hulbert
- Center for Fundamental Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA
| | - Frederico G S Toledo
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Phil A Hart
- Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Georgios I Papachristou
- Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, OH
| | | | - Dhiraj Yadav
- Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Maren R Laughlin
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD
| | - Mark O Goodarzi
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Cate Speake
- Diabetes Clinical Research Program, Center for Interventional Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA
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8
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Holeček M. Serine Metabolism in Health and Disease and as a Conditionally Essential Amino Acid. Nutrients 2022; 14:nu14091987. [PMID: 35565953 PMCID: PMC9105362 DOI: 10.3390/nu14091987] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/02/2022] [Accepted: 05/06/2022] [Indexed: 02/04/2023] Open
Abstract
L-serine plays an essential role in a broad range of cellular functions including protein synthesis, neurotransmission, and folate and methionine cycles and synthesis of sphingolipids, phospholipids, and sulphur containing amino acids. A hydroxyl side-chain of L-serine contributes to polarity of proteins, and serves as a primary site for binding a phosphate group to regulate protein function. D-serine, its D-isoform, has a unique role. Recent studies indicate increased requirements for L-serine and its potential therapeutic use in some diseases. L-serine deficiency is associated with impaired function of the nervous system, primarily due to abnormal metabolism of phospholipids and sphingolipids, particularly increased synthesis of deoxysphingolipids. Therapeutic benefits of L-serine have been reported in primary disorders of serine metabolism, diabetic neuropathy, hyperhomocysteinemia, and amyotrophic lateral sclerosis. Use of L-serine and its metabolic products, specifically D-serine and phosphatidylserine, has been investigated for the therapy of renal diseases, central nervous system injury, and in a wide range of neurological and psychiatric disorders. It is concluded that there are disorders in which humans cannot synthesize L-serine in sufficient quantities, that L-serine is effective in therapy of disorders associated with its deficiency, and that L-serine should be classified as a “conditionally essential” amino acid.
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Affiliation(s)
- Milan Holeček
- Department of Physiology, Faculty of Medicine in Hradec Králové, Charles University, Šimkova 870, 500 03 Hradec Králové, Czech Republic
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9
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Stereoselective Synthesis of Novel Sphingoid Bases Utilized for Exploring the Secrets of Sphinx. Int J Mol Sci 2021; 22:ijms22158171. [PMID: 34360937 PMCID: PMC8347175 DOI: 10.3390/ijms22158171] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/11/2022] Open
Abstract
Sphingolipids are ubiquitous in eukaryotic plasma membranes and play major roles in human and animal physiology and disease. This class of lipids is usually defined as being derivatives of sphingosine, a long-chain 1,3-dihydroxy-2-amino alcohol. Various pathological conditions such as diabetes or neuropathy have been associated with changes in the sphingolipidome and an increased biosynthesis of structurally altered non-canonical sphingolipid derivatives. These unusual or non-canonical sphingolipids hold great promise as potential diagnostic markers. However, due to their low concentrations and the unavailability of suitable standards, the research to explore the secret of this class of 'Sphinx' lipids is ultimately hampered. Therefore, the development of efficient and facile syntheses of standard compounds is a key endeavor. Here, we present various chemical approaches for stereoselective synthesis and in-depth chemical characterization of a set of novel sphingoid bases which were recently utilized as valuable tools to explore the metabolism and biophysical properties of sphingolipids, but also to develop efficient analytical methods for their detection and quantification.
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10
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Hannich JT, Loizides‐Mangold U, Sinturel F, Harayama T, Vandereycken B, Saini C, Gosselin P, Brulhart‐Meynet M, Robert M, Chanon S, Durand C, Paz Montoya J, David FPA, Guessous I, Pataky Z, Golay A, Jornayvaz FR, Philippe J, Dermitzakis ET, Brown SA, Lefai E, Riezman H, Dibner C. Ether lipids, sphingolipids and toxic 1-deoxyceramides as hallmarks for lean and obese type 2 diabetic patients. Acta Physiol (Oxf) 2021; 232:e13610. [PMID: 33351229 DOI: 10.1111/apha.13610] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/08/2020] [Accepted: 12/21/2020] [Indexed: 12/12/2022]
Abstract
AIM The worldwide increase in obesity and type 2 diabetes (T2D) represents a major health challenge. Chronically altered lipids induced by obesity further promote the development of T2D, and the accumulation of toxic lipid metabolites in serum and peripheral organs may contribute to the diabetic phenotype. METHODS To better understand the complex metabolic pattern of lean and obese T2D and non-T2D individuals, we analysed the lipid profile of human serum, skeletal muscle and visceral adipose tissue of two cohorts by systematic mass spectrometry-based lipid analysis. RESULTS Lipid homeostasis was strongly altered in a disease- and tissue-specific manner, allowing us to define T2D signatures associated with obesity from those that were obesity independent. Lipid changes encompassed lyso-, diacyl- and ether-phospholipids. Moreover, strong changes in sphingolipids included cytotoxic 1-deoxyceramide accumulation in a disease-specific manner in serum and visceral adipose tissue. The high amounts of non-canonical 1-deoxyceramide present in human adipose tissue most likely come from cell-autonomous synthesis because 1-deoxyceramide production increased upon differentiation to adipocytes in mouse cell culture experiments. CONCLUSION Taken together, the observed lipidome changes in obesity and T2D will facilitate the identification of T2D patient subgroups and represent an important step towards personalized medicine in diabetes.
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Affiliation(s)
- J. Thomas Hannich
- Department of Biochemistry Faculty of Science NCCR Chemical Biology University of Geneva Geneva Switzerland
| | - Ursula Loizides‐Mangold
- Division of Endocrinology Diabetes, Nutrition and Patient Education Department of Medicine University Hospital of Geneva Geneva Switzerland
- Department of Cell Physiology and Metabolism Faculty of Medicine University of Geneva Geneva Switzerland
- Diabetes Center Faculty of Medicine University of Geneva Geneva Switzerland
- Institute of Genetics and Genomics in Geneva (iGE3) University of Geneva Geneva Switzerland
| | - Flore Sinturel
- Division of Endocrinology Diabetes, Nutrition and Patient Education Department of Medicine University Hospital of Geneva Geneva Switzerland
- Department of Cell Physiology and Metabolism Faculty of Medicine University of Geneva Geneva Switzerland
- Diabetes Center Faculty of Medicine University of Geneva Geneva Switzerland
- Institute of Genetics and Genomics in Geneva (iGE3) University of Geneva Geneva Switzerland
| | - Takeshi Harayama
- Department of Biochemistry Faculty of Science NCCR Chemical Biology University of Geneva Geneva Switzerland
| | | | - Camille Saini
- Department and Division of Primary Care Medicine University Hospital of Geneva Geneva Switzerland
| | - Pauline Gosselin
- Division of Endocrinology Diabetes, Nutrition and Patient Education Department of Medicine University Hospital of Geneva Geneva Switzerland
- Department of Cell Physiology and Metabolism Faculty of Medicine University of Geneva Geneva Switzerland
- Diabetes Center Faculty of Medicine University of Geneva Geneva Switzerland
- Institute of Genetics and Genomics in Geneva (iGE3) University of Geneva Geneva Switzerland
- Department and Division of Primary Care Medicine University Hospital of Geneva Geneva Switzerland
| | - Marie‐Claude Brulhart‐Meynet
- Division of Endocrinology Diabetes, Nutrition and Patient Education Department of Medicine University Hospital of Geneva Geneva Switzerland
| | - Maud Robert
- Department of Digestive and Bariatric Surgery Edouard Herriot University HospitalUniversity Lyon France
| | - Stephanie Chanon
- CarMeN Laboratory INSERM U1060 INRA 1397 University Lyon 1 Oullins France
| | - Christine Durand
- CarMeN Laboratory INSERM U1060 INRA 1397 University Lyon 1 Oullins France
| | - Jonathan Paz Montoya
- Proteomics Core Facility Ecole Polytechnique Fédérale de Lausanne Lausanne Switzerland
| | - Fabrice P. A. David
- Gene Expression Core Facility Ecole Polytechnique Fédérale de Lausanne Lausanne Switzerland
| | - Idris Guessous
- Department and Division of Primary Care Medicine University Hospital of Geneva Geneva Switzerland
| | - Zoltan Pataky
- Division of Endocrinology Diabetes, Nutrition and Patient Education Department of Medicine WHO Collaborating Centre University Hospital of GenevaUniversity of Geneva Geneva Switzerland
| | - Alain Golay
- Division of Endocrinology Diabetes, Nutrition and Patient Education Department of Medicine WHO Collaborating Centre University Hospital of GenevaUniversity of Geneva Geneva Switzerland
| | - François R. Jornayvaz
- Division of Endocrinology Diabetes, Nutrition and Patient Education Department of Medicine University Hospital of Geneva Geneva Switzerland
- Diabetes Center Faculty of Medicine University of Geneva Geneva Switzerland
| | - Jacques Philippe
- Division of Endocrinology Diabetes, Nutrition and Patient Education Department of Medicine University Hospital of Geneva Geneva Switzerland
- Diabetes Center Faculty of Medicine University of Geneva Geneva Switzerland
| | - Emmanouil T. Dermitzakis
- Diabetes Center Faculty of Medicine University of Geneva Geneva Switzerland
- Institute of Genetics and Genomics in Geneva (iGE3) University of Geneva Geneva Switzerland
- Department of Genetic Medicine and Development Faculty of Medicine University of Geneva Geneva Switzerland
| | - Steven A. Brown
- Institute of Pharmacology and Toxicology University of Zurich Zurich Switzerland
| | - Etienne Lefai
- INRA Unité de Nutrition Humaine Université Clermont Auvergne Paris France
| | - Howard Riezman
- Department of Biochemistry Faculty of Science NCCR Chemical Biology University of Geneva Geneva Switzerland
| | - Charna Dibner
- Division of Endocrinology Diabetes, Nutrition and Patient Education Department of Medicine University Hospital of Geneva Geneva Switzerland
- Department of Cell Physiology and Metabolism Faculty of Medicine University of Geneva Geneva Switzerland
- Diabetes Center Faculty of Medicine University of Geneva Geneva Switzerland
- Institute of Genetics and Genomics in Geneva (iGE3) University of Geneva Geneva Switzerland
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Tran D, Myers S, McGowan C, Henstridge D, Eri R, Sonda S, Caruso V. 1-Deoxysphingolipids, Early Predictors of Type 2 Diabetes, Compromise the Functionality of Skeletal Myoblasts. Front Endocrinol (Lausanne) 2021; 12:772925. [PMID: 35002962 PMCID: PMC8739520 DOI: 10.3389/fendo.2021.772925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/03/2021] [Indexed: 01/18/2023] Open
Abstract
Metabolic dysfunction, dysregulated differentiation, and atrophy of skeletal muscle occur as part of a cluster of abnormalities associated with the development of Type 2 diabetes mellitus (T2DM). Recent interest has turned to the attention of the role of 1-deoxysphingolipids (1-DSL), atypical class of sphingolipids which are found significantly elevated in patients diagnosed with T2DM but also in the asymptomatic population who later develop T2DM. In vitro studies demonstrated that 1-DSL have cytotoxic properties and compromise the secretion of insulin from pancreatic beta cells. However, the role of 1-DSL on the functionality of skeletal muscle cells in the pathophysiology of T2DM still remains unclear. This study aimed to investigate whether 1-DSL are cytotoxic and disrupt the cellular processes of skeletal muscle precursors (myoblasts) and differentiated cells (myotubes) by performing a battery of in vitro assays including cell viability adenosine triphosphate assay, migration assay, myoblast fusion assay, glucose uptake assay, and immunocytochemistry. Our results demonstrated that 1-DSL significantly reduced the viability of myoblasts in a concentration and time-dependent manner, and induced apoptosis as well as cellular necrosis. Importantly, myoblasts were more sensitive to the cytotoxic effects induced by 1-DSL rather than by saturated fatty acids, such as palmitate, which are critical mediators of skeletal muscle dysfunction in T2DM. Additionally, 1-DSL significantly reduced the migration ability of myoblasts and the differentiation process of myoblasts into myotubes. 1-DSL also triggered autophagy in myoblasts and significantly reduced insulin-stimulated glucose uptake in myotubes. These findings demonstrate that 1-DSL directly compromise the functionality of skeletal muscle cells and suggest that increased levels of 1-DSL observed during the development of T2DM are likely to contribute to the pathophysiology of muscle dysfunction detected in this disease.
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Affiliation(s)
- Duyen Tran
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Stephen Myers
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Courtney McGowan
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
- Sport Performance Optimization Research Team, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Darren Henstridge
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Rajaraman Eri
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Sabrina Sonda
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Vanni Caruso
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
- Institute for Research on Pain, Istituto di Formazione e Ricerca in Scienze Algologiche (ISAL) Foundation, Rimini, Italy
- *Correspondence: Vanni Caruso,
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