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Arivazhagan L, Popp CJ, Ruiz HH, Wilson RA, Manigrasso MB, Shekhtman A, Ramasamy R, Sevick MA, Schmidt AM. The RAGE/DIAPH1 axis: mediator of obesity and proposed biomarker of human cardiometabolic disease. Cardiovasc Res 2024; 119:2813-2824. [PMID: 36448548 DOI: 10.1093/cvr/cvac175] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 12/07/2023] Open
Abstract
Overweight and obesity are leading causes of cardiometabolic dysfunction. Despite extensive investigation, the mechanisms mediating the increase in these conditions are yet to be fully understood. Beyond the endogenous formation of advanced glycation endproducts (AGEs) in overweight and obesity, exogenous sources of AGEs accrue through the heating, production, and consumption of highly processed foods. Evidence from cellular and mouse model systems indicates that the interaction of AGEs with their central cell surface receptor for AGE (RAGE) in adipocytes suppresses energy expenditure and that AGE/RAGE contributes to increased adipose inflammation and processes linked to insulin resistance. In human subjects, the circulating soluble forms of RAGE, which are mutable, may serve as biomarkers of obesity and weight loss. Antagonists of RAGE signalling, through blockade of the interaction of the RAGE cytoplasmic domain with the formin, Diaphanous-1 (DIAPH1), target aberrant RAGE activities in metabolic tissues. This review focuses on the potential roles for AGEs and other RAGE ligands and RAGE/DIAPH1 in the pathogenesis of overweight and obesity and their metabolic consequences.
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Affiliation(s)
- Lakshmi Arivazhagan
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Collin J Popp
- Center for Healthful Behavior Change, Department of Population Health, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Henry H Ruiz
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Robin A Wilson
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Michaele B Manigrasso
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Alexander Shekhtman
- Department of Chemistry, The State University of New York at Albany, Albany, NY 12222, USA
| | - Ravichandran Ramasamy
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
| | - Mary Ann Sevick
- Center for Healthful Behavior Change, Department of Population Health, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Ann Marie Schmidt
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, Science Building, 435 E. 30th Street, New York, NY 10016, USA
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Perkins RK, Miranda ER, Varshney P, Farabi SS, Quinn LT, Haus JM. Effects of acute aerobic exercise on circulating sTLR and sRAGE profiles in normal- and abnormal-glucose-tolerant individuals. Physiol Rep 2023; 11:e15859. [PMID: 37985201 PMCID: PMC10659941 DOI: 10.14814/phy2.15859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 10/11/2023] [Accepted: 10/29/2023] [Indexed: 11/22/2023] Open
Abstract
BMI-matched normal- (NGT, n = 10, 41 ± 4y, 35.6 ± 3.0 kg/m2 ) and abnormal-glucose-tolerant (AGT, n = 16, 51 ± 3y, 34.3 ± 1.5 kg/m2 ) participants were evaluated for body composition, metabolic health (oral glucose tolerance test [OGTT]), and VO2 max. Participants also completed a treadmill walking test at 65% VO2 max for 30 min. Total sRAGE, esRAGE, sTLR2, and sTLR4 were assessed via ELISA, and cRAGE was calculated. AGT exhibited greater (p < 0.05) body fat % (+24%), fasting plasma glucose (+37%), OGTT AUC (+59%), and HOMA-IR (+55%) and lower (p < 0.05) VO2 max (-24%). sTLR2 was 33% lower in AGT than NGT (main effect, p = 0.034). However, sTLR2 did not change (p > 0.05) following AE. sTLR4 tended to be 36% lower in AGT than NGT (main effect, p = 0.096) and did not change following AE (p > 0.05). Total sRAGE and isoforms were similar (p > 0.05) between groups and did not change following AE (p > 0.05). sTLR2 was correlated with (p < 0.05) basal BG (r = -0.505) and OGTT AUC (r = -0.687). sTLR4 was correlated with basal BG (p < 0.10, r = -0.374) and OGTT AUC (p < 0.05, r = -0.402). Linear regressions were predictive of sTLRs in the basal state (sTLR2: R2 = 0.641, p = 0.01; sTLR4: R2 = 0.566, p = 0.037) and after acute exercise state (sTLR2: R2 = 0.681, p = 0.004, sTLR4: R2 = 0.568, p = 0.036).These findings show circulating sTLR profiles are disrupted in AGT and acute AE minimally modulates their levels.
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Affiliation(s)
- Ryan K. Perkins
- Department of KinesiologyCalifornia State University, ChicoChicoCaliforniaUSA
| | | | | | - Sarah S. Farabi
- Center for Human NutritionWashington University School of MedicineSt. LouisMissouriUSA
- Goldfarb School of Nursing at Barnes‐Jewish CollegeSt. LouisMissouriUSA
| | - Lauretta T. Quinn
- Department of Behavioral Health SciencesUniversity of Illinois at ChicagoChicagoIllinoisUSA
| | - Jacob M. Haus
- School of KinesiologyUniversity of MichiganAnn ArborMichiganUSA
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Miranda ER, Mey JT, Blackburn BK, Chaves AB, Fuller KNZ, Perkins RK, Ludlow AT, Haus JM. Soluble RAGE and skeletal muscle tissue RAGE expression profiles in lean and obese young adults across differential aerobic exercise intensities. J Appl Physiol (1985) 2023; 135:849-862. [PMID: 37675469 PMCID: PMC10642519 DOI: 10.1152/japplphysiol.00748.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/08/2023] Open
Abstract
Nearly 40% of Americans have obesity and are at increased risk for developing type 2 diabetes. Skeletal muscle is responsible for >80% of insulin-stimulated glucose uptake that is attenuated by the inflammatory milieu of obesity and augmented by aerobic exercise. The receptor for advanced glycation endproducts (RAGE) is an inflammatory receptor directly linking metabolic dysfunction with inflammation. Circulating soluble isoforms of RAGE (sRAGE) formed either by proteolytic cleavage (cRAGE) or alternative splicing (esRAGE) act as decoys for RAGE ligands, thereby counteracting RAGE-mediated inflammation. We aimed to determine if RAGE expression or alternative splicing of RAGE is altered by obesity in muscle, and whether acute aerobic exercise (AE) modifies RAGE and sRAGE. Young (20-34 yr) participants without [n = 17; body mass index (BMI): 22.6 ± 2.6 kg/m2] and with obesity (n = 7; BMI: 32.8 ± 2.9 kg/m2) performed acute aerobic exercise (AE) at 40%, 65%, or 80% of maximal aerobic capacity (V̇o2max; mL/kg/min) on separate visits. Blood was taken before and 30 min after each AE bout. Muscle biopsy samples were taken before, 30 min, and 3 h after the 80% V̇o2max AE bout. Individuals with obesity had higher total RAGE and esRAGE mRNA and RAGE protein (P < 0.0001). In addition, RAGE and esRAGE transcripts correlated to transcripts of the NF-κB subunit P65 (P < 0.05). There was no effect of AE on total RAGE or esRAGE transcripts, or RAGE protein (P > 0.05), and AE tended to decrease circulating sRAGE in particular at lower intensities of exercise. RAGE expression is exacerbated in skeletal muscle with obesity, which may contribute to muscle inflammation via NF-κB. Future work should investigate the consequences of increased skeletal muscle RAGE on the development of obesity-related metabolic dysfunction and potential mitigating strategies.NEW & NOTEWORTHY This study is the first to investigate the effects of aerobic exercise intensity on circulating sRAGE isoforms, muscle RAGE protein, and muscle RAGE splicing. sRAGE isoforms tended to diminish with exercise, although this effect was attenuated with increasing exercise intensity. Muscle RAGE protein and gene expression were unaffected by exercise. However, individuals with obesity displayed nearly twofold higher muscle RAGE protein and gene expression, which positively correlated with expression of the P65 subunit of NF-κB.
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Affiliation(s)
- Edwin R Miranda
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, United States
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah, United States
| | - Jacob T Mey
- Integrated Physiology and Molecular Metabolism, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
| | - Brian K Blackburn
- Applied Health Sciences and Kinesiology, Humboldt State University, Arcata, California, United States
| | - Alec B Chaves
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University, Durham, North Carolina, United States
| | - Kelly N Z Fuller
- Division of Endocrinology, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Ryan K Perkins
- Department of Kinesiology, California State University Chico, Chico, California, United States
| | - Andrew T Ludlow
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, United States
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, United States
- Applied Health Sciences, University of Illinois at Chicago, Chicago, Illinois, United States
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Smith PK, Venter C, O’Mahony L, Canani RB, Lesslar OJL. Do advanced glycation end products contribute to food allergy? FRONTIERS IN ALLERGY 2023; 4:1148181. [PMID: 37081999 PMCID: PMC10111965 DOI: 10.3389/falgy.2023.1148181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 03/06/2023] [Indexed: 04/07/2023] Open
Abstract
Sugars can bind non-enzymatically to proteins, nucleic acids or lipids and form compounds called Advanced Glycation End Products (AGEs). Although AGEs can form in vivo, factors in the Western diet such as high amounts of added sugars, processing methods such as dehydration of proteins, high temperature sterilisation to extend shelf life, and cooking methods such as frying and microwaving (and reheating), can lead to inordinate levels of dietary AGEs. Dietary AGEs (dAGEs) have the capacity to bind to the Receptor for Advanced Glycation End Products (RAGE) which is part of the endogenous threat detection network. There are persuasive epidemiological and biochemical arguments that correlate the rise in food allergy in several Western countries with increases in dAGEs. The increased consumption of dAGEs is enmeshed in current theories of the aetiology of food allergy which will be discussed.
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Affiliation(s)
- P. K. Smith
- Clinical Medicine and Menzies School of Research, Griffith University, Gold Coast, QLD, Australia
- Correspondence: P. K. Smith
| | - C. Venter
- Children’s Hospital Colorado, University of Colorado, Aurora, CO, United States
| | - L. O’Mahony
- Department of Medicine, School of Microbiology, APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - R. Berni Canani
- Department of Translational Medical Science and ImmunoNutritionLab at CEINGE-Advanced Biotechnologies, University of Naples “Federico II”, Naples, Italy
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Perkins RK, van Vliet S, Miranda ER, Fuller KNZ, Beisswenger PJ, Wilund KR, Paluska SA, Burd NA, Haus JM. Advanced Glycation End Products and Inflammatory Cytokine Profiles in Maintenance Hemodialysis Patients After the Ingestion of a Protein-Dense Meal. J Ren Nutr 2023; 33:181-192. [PMID: 34923111 PMCID: PMC10580815 DOI: 10.1053/j.jrn.2021.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/11/2021] [Accepted: 11/28/2021] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE The goal of this investigation was to evaluate circulating and skeletal muscle inflammatory biomarkers between maintenance hemodialysis (MHD) and demographic-matched control subjects (CON) before and after ingestion of a protein-rich meal. DESIGN AND METHODS CON (n = 8; 50 ± 2 years; 31 ± 1 kg/m2) and MHD patients (n = 8; 56 ± 5 years; 32 ± 2 kg/m2) underwent a basal blood draw and muscle biopsy and serial blood draws after the ingestion of a mixed meal on a nondialysis day. Plasma advanced glycation end products (AGEs) and markers of oxidation were assessed via liquid chromatography-tandem mass spectrometry before and after the meal (+240 min). Circulating inflammatory cytokines and soluble receptors for AGE (sRAGE) isoforms (endogenous secretory RAGEs and cleaved RAGEs) were determined before and after the meal (+240 min). Basal muscle was probed for inflammatory cytokines and protein expression of related signaling components (RAGE, Toll-like receptor 4, oligosaccharyltransferase subunit 48, TIR-domain-containing adapter-inducing interferon-β, total IκBα, and pIκBα). RESULTS Basal circulating AGEs were 7- to 343-fold higher (P < .001) in MHD than those in CON, but only MG-H1 increased in CON after the meal (P < .001). There was a group effect (MHD > CON) for total sRAGEs (P = .02) and endogenous secretory RAGEs (P < .001) and a trend for cleaved RAGEs (P=.09), with no meal effect. In addition, there was a group effect (MHD < CON; P < .05) for circulating fractalkine, interleukin (IL)10, IL17A, and IL1β and a trend (P < .10) for IL6 and macrophage inflammatory protein 1 alpha, whereas tumor necrosis factor alpha was higher in MHD (P < .001). In muscle, Toll-like receptor 4 (P = .03), TIR-domain-containing adapter-inducing interferon-β (P = .002), and oligosaccharyltransferase subunit 48 (P = .02) expression was lower in MHD than that in CON, whereas IL6 was higher (P = .01) and IL8 (P = .08) tended to be higher in MHD. CONCLUSION Overall, MHD exhibited an exaggerated, circulating, and skeletal muscle inflammatory biomarker environment, and the meal did not appreciably affect the inflammatory status.
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Affiliation(s)
- Ryan K Perkins
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan
| | - Stephan van Vliet
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Edwin R Miranda
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan
| | | | | | - Kenneth R Wilund
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Scott A Paluska
- Department of Family Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Nicholas A Burd
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan.
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Barnes JN, Burns JM, Bamman MM, Billinger SA, Bodine SC, Booth FW, Brassard P, Clemons TA, Fadel PJ, Geiger PC, Gujral S, Haus JM, Kanoski SE, Miller BF, Morris JK, O’Connell KM, Poole DC, Sandoval DA, Smith JC, Swerdlow RH, Whitehead SN, Vidoni ED, van Praag H. Proceedings from the Albert Charitable Trust Inaugural Workshop on 'Understanding the Acute Effects of Exercise on the Brain'. Brain Plast 2022; 8:153-168. [PMID: 36721393 PMCID: PMC9837736 DOI: 10.3233/bpl-220146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2022] [Indexed: 12/12/2022] Open
Abstract
An inaugural workshop supported by "The Leo and Anne Albert Charitable Trust," was held October 4-7, 2019 in Scottsdale, Arizona, to focus on the effects of exercise on the brain and to discuss how physical activity may prevent or delay the onset of aging-related neurodegenerative conditions. The Scientific Program Committee (led by Dr. Jeff Burns) assembled translational, clinical, and basic scientists who research various aspects of the effects of exercise on the body and brain, with the overall goal of gaining a better understanding as to how to delay or prevent neurodegenerative diseases. In particular, research topics included the links between cardiorespiratory fitness, the cerebrovasculature, energy metabolism, peripheral organs, and cognitive function, which are all highly relevant to understanding the effects of acute and chronic exercise on the brain. The Albert Trust workshop participants addressed these and related topics, as well as how other lifestyle interventions, such as diet, affect age-related cognitive decline associated with Alzheimer's and other neurodegenerative diseases. This report provides a synopsis of the presentations and discussions by the participants, and a delineation of the next steps towards advancing our understanding of the effects of exercise on the aging brain.
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Affiliation(s)
- Jill N. Barnes
- Department of Kinesiology, University of Wisconsin-Madison, Madison, WI, USA
| | - Jeffrey M. Burns
- University of Kansas Alzheimer’s Disease Research Center, Fairway, KS, USA
| | - Marcas M. Bamman
- UAB Center for Exercise Medicine, University of Alabama, Birmingham, AL, USA
| | | | - Sue C. Bodine
- Department of Internal Medicine, Division of Endocrinology and Metabolism, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Frank W. Booth
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - Patrice Brassard
- Department of Kinesiology, Faculty of Medicine, Université Laval, and Research center of the Institut universitaire de cardiologie et de pneumologie de Québec, Québec city, QC, Canada
| | - Tameka A. Clemons
- Department of Professional and Medical Education, Meharry Medical College, Nashville, TN, USA
| | - Paul J. Fadel
- Department of Kinesiology, University of Texas at Arlington, Arlington, Texas, USA
| | - Paige C. Geiger
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Swathi Gujral
- University of Pittsburgh School of Medicine, Department of Psychiatry, Pittsburgh, PA, USA
| | - Jacob M. Haus
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA
| | - Scott E. Kanoski
- Human and Evolutionary Biology Section, Department of Biological Sciences, Dornsrife College of Letters, Arts and Sciences, University of Southern California, Los Angeles, CA, USA
| | - Benjamin F. Miller
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Jill K. Morris
- University of Kansas Alzheimer’s Disease Research Center, Fairway, KS, USA
| | | | - David C. Poole
- Departments of Kinesiology, Anatomy and Physiology, Kansas State University, Manhattan, KS, USA
| | | | - J. Carson Smith
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, MD, USA
| | | | - Shawn N. Whitehead
- Vulnerable Brain Laboratory, Department Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, Western University, London, N6A 5C1, Canada
| | - Eric D. Vidoni
- University of Kansas Alzheimer’s Disease Research Center, Fairway, KS, USA
| | - Henriette van Praag
- Stiles-Nicholson Brain Institute, Charles E. Schmidt College of Medicine, Florida Atlantic University, Jupiter FL, USA
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Nara H, Watanabe R. Anti-Inflammatory Effect of Muscle-Derived Interleukin-6 and Its Involvement in Lipid Metabolism. Int J Mol Sci 2021; 22:ijms22189889. [PMID: 34576053 PMCID: PMC8471880 DOI: 10.3390/ijms22189889] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 12/11/2022] Open
Abstract
Interleukin (IL)-6 has been studied since its discovery for its role in health and diseases. It is one of the most important pro-inflammatory cytokines. IL-6 was reported as an exacerbating factor in coronavirus disease. In recent years, it has become clear that the function of muscle-derived IL-6 is different from what has been reported so far. Exercise is accompanied by skeletal muscle contraction, during which, several bioactive substances, collectively named myokines, are secreted from the muscles. Many reports have shown that IL-6 is the most abundant myokine. Interestingly, it was indicated that IL-6 plays opposing roles as a myokine and as a pro-inflammatory cytokine. In this review, we discuss why IL-6 has different functions, the signaling mode of hyper-IL-6 via soluble IL-6 receptor (sIL-6R), and the involvement of soluble glycoprotein 130 in the suppressive effect of hyper-IL-6. Furthermore, the involvement of a disintegrin and metalloprotease family molecules in the secretion of sIL-6R is described. One of the functions of muscle-derived IL-6 is lipid metabolism in the liver. However, the differences between the functions of IL-6 as a pro-inflammatory cytokine and the functions of muscle-derived IL-6 are unclear. Although the involvement of myokines in lipid metabolism in adipocytes was previously discussed, little is known about the direct relationship between nonalcoholic fatty liver disease and muscle-derived IL-6. This review is the first to discuss the relationship between the function of IL-6 in diseases and the function of muscle-derived IL-6, focusing on IL-6 signaling and lipid metabolism in the liver.
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Jeong D, Lim S, Lee S, Oh M, Cho C, Seong H, Jung W, Kim S. Construction of Condition-Specific Gene Regulatory Network Using Kernel Canonical Correlation Analysis. Front Genet 2021; 12:652623. [PMID: 34093651 PMCID: PMC8172963 DOI: 10.3389/fgene.2021.652623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/26/2021] [Indexed: 01/01/2023] Open
Abstract
Gene expression profile or transcriptome can represent cellular states, thus understanding gene regulation mechanisms can help understand how cells respond to external stress. Interaction between transcription factor (TF) and target gene (TG) is one of the representative regulatory mechanisms in cells. In this paper, we present a novel computational method to construct condition-specific transcriptional networks from transcriptome data. Regulatory interaction between TFs and TGs is very complex, specifically multiple-to-multiple relations. Experimental data from TF Chromatin Immunoprecipitation sequencing is useful but produces one-to-multiple relations between TF and TGs. On the other hand, co-expression networks of genes can be useful for constructing condition transcriptional networks, but there are many false positive relations in co-expression networks. In this paper, we propose a novel method to construct a condition-specific and combinatorial transcriptional network, applying kernel canonical correlation analysis (kernel CCA) to identify multiple-to-multiple TF-TG relations in certain biological condition. Kernel CCA is a well-established statistical method for computing the correlation of a group of features vs. another group of features. We, therefore, employed kernel CCA to embed TFs and TGs into a new space where the correlation of TFs and TGs are reflected. To demonstrate the usefulness of our network construction method, we used the blood transcriptome data for the investigation on the response to high fat diet in a human and an arabidopsis data set for the investigation on the response to cold/heat stress. Our method detected not only important regulatory interactions reported in previous studies but also novel TF-TG relations where a module of TF is regulating a module of TGs upon specific stress.
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Affiliation(s)
- Dabin Jeong
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, South Korea
| | - Sangsoo Lim
- Bioinformatics Institute, Seoul National University, Seoul, South Korea
| | - Sangseon Lee
- BK21 FOUR Intelligence Computing, Seoul National University, Seoul, South Korea
| | - Minsik Oh
- Department of Computer Science and Engineering, Seoul National University, Seoul, South Korea
| | - Changyun Cho
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, South Korea
| | - Hyeju Seong
- Department of Crop Science, Konkuk University, Seoul, South Korea
| | - Woosuk Jung
- Department of Crop Science, Konkuk University, Seoul, South Korea
| | - Sun Kim
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, South Korea
- Bioinformatics Institute, Seoul National University, Seoul, South Korea
- Department of Computer Science and Engineering, Institute of Engineering Research, Seoul National University, Seoul, South Korea
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Tavares JF, Ribeiro PVM, Coelho OGL, Silva LED, Alfenas RCG. Reply to letter to the editor: "Advanced glycation end-products and their receptors: Exercise effects". Obes Rev 2020; 21:e13031. [PMID: 32266772 DOI: 10.1111/obr.13031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Juliana F Tavares
- Department of Population Health Sciences, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Priscila V M Ribeiro
- Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Olívia G L Coelho
- Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Laís E da Silva
- Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Rita C G Alfenas
- Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Viçosa, Brazil
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Perkins RK, Miranda ER, Karstoft K, Beisswenger PJ, Solomon TPJ, Haus JM. Experimental Hyperglycemia Alters Circulating Concentrations and Renal Clearance of Oxidative and Advanced Glycation End Products in Healthy Obese Humans. Nutrients 2019; 11:nu11030532. [PMID: 30823632 PMCID: PMC6471142 DOI: 10.3390/nu11030532] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 02/20/2019] [Accepted: 02/21/2019] [Indexed: 02/07/2023] Open
Abstract
The purpose of this investigation was to evaluate the effects of experimental hyperglycemia on oxidative damage (OX), advanced glycation end products (AGEs), and the receptor for AGEs (RAGE) through an in vivo approach. Obese subjects (n = 10; 31.2 ± 1.2 kg·m−2; 56 ± 3 years) underwent 24 h of hyperglycemic clamp (+5.4 mM above basal), where plasma at basal and after 2 h and 24 h of hyperglycemic challenge were assayed for OX (methionine sulfoxide, MetSO, and aminoadipic acid, AAA) and AGE-free adducts (Ne-carboxymethyllysine, CML; Ne-carboxyethyllysine, CEL; glyoxal hydroimidazolone-1, GH-1; methylglyoxal hydroimidazolone-1, MG-H1; and 3-deoxyglucosone hydroimidazolone, 3DG-H) via liquid chromatography–tandem mass spectrometry (LC–MS/MS). Urine was also analyzed at basal and after 24 h for OX and AGE-free adducts and plasma soluble RAGE (sRAGE) isoforms (endogenous secretory RAGE, esRAGE, and cleaved RAGE, cRAGE), and inflammatory markers were determined via enzyme-linked immunosorbent assay (ELISA). Skeletal muscle tissue collected via biopsy was probed at basal, 2 h, and 24 h for RAGE and OST48 protein expression. Plasma MetSO, AAA, CEL, MG-H1, and G-H1 decreased (−18% to −47%; p < 0.05), while CML increased (72% at 24 h; p < 0.05) and 3DG-H remained unchanged (p > 0.05) with the hyperglycemic challenge. Renal clearance of MetSO, AAA, and G-H1 increased (599% to 1077%; p < 0.05), CML decreased (−30%; p < 0.05), and 3DG-H, CEL, and MG-H1 remained unchanged (p > 0.05). Fractional excretion of MetSO, AAA, CEL, G-H1, and MG-H1 increased (5.8% to 532%; p < 0.05) and CML and 3DG-H remained unchanged (p > 0.05). Muscle RAGE and OST48 expression, plasma sRAGE, IL-1β, IL-1Ra, and TNFα remained unchanged (p > 0.05), while IL-6 increased (159% vs. basal; p > 0.05). These findings suggest that individuals who are obese but otherwise healthy have the capacity to prevent accumulation of OX and AGEs during metabolic stress by increasing fractional excretion and renal clearance.
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Affiliation(s)
- Ryan K Perkins
- School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Edwin R Miranda
- School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Kristian Karstoft
- Centre of Inflammation and Metabolism and Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen, Denmark.
| | - Paul J Beisswenger
- Geisel School of Medicine, Dartmouth College, PreventAGE Healthcare, 16 Cavendish Court, Lebanon, NH 03766, USA.
| | - Thomas P J Solomon
- School of Sport, Exercise, and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, West Midlands B15 2TT, UK.
- Institute of Metabolism and Systems Research (IMSR), College of Medical and Dental Sciences, University of Birmingham, Birmingham, West Midlands B15 2TT, UK.
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, USA.
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Miranda ER, Fuller KNZ, Perkins RK, Beisswenger PJ, Farabi SS, Quinn L, Haus JM. Divergent Changes in Plasma AGEs and sRAGE Isoforms Following an Overnight Fast in T1DM. Nutrients 2019; 11:nu11020386. [PMID: 30781793 PMCID: PMC6413006 DOI: 10.3390/nu11020386] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 02/08/2019] [Accepted: 02/08/2019] [Indexed: 12/27/2022] Open
Abstract
Advanced glycation end products (AGEs) promote the development of diabetic complications through activation of their receptor (RAGE). Isoforms of soluble RAGE (sRAGE) sequester AGEs and protect against RAGE-mediated diabetic complications. We investigated the effect of an overnight fast on circulating metabolic substrates, hormones, AGEs, and sRAGE isoforms in 26 individuals with type 1 diabetes (T1DM). Blood was collected from 26 young (18–30 years) T1DM patients on insulin pumps before and after an overnight fast. Circulating AGEs were measured via LC-MS/MS and sRAGE isoforms were analyzed via ELISA. Glucose, insulin, glucagon, and eGFRcystatin-c decreased while cortisol increased following the overnight fast (p < 0.05). AGEs (CML, CEL, 3DG-H, MG-H1, and G-H1) decreased (21–58%, p < 0.0001) while total sRAGE, cleaved RAGE (cRAGE), and endogenous secretory RAGE (esRAGE) increased (22–24%, p < 0.0001) following the overnight fast. The changes in sRAGE isoforms were inversely related to MG-H1 (rho = −0.493 to −0.589, p < 0.05) and the change in esRAGE was inversely related to the change in G-H1 (rho = −0.474, p < 0.05). Multiple regression analyses revealed a 1 pg/mL increase in total sRAGE, cRAGE, or esRAGE independently predicted a 0.42–0.52 nmol/L decrease in MG-H1. Short-term energy restriction via an overnight fast resulted in increased sRAGE isoforms and may be protective against AGE accumulation.
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Affiliation(s)
- Edwin R Miranda
- School of Kinesiology, University of Michigan, 401 Washtenaw Ave., Ann Arbor, MI 48109, USA.
| | - Kelly N Z Fuller
- Department of Molecular and Integrative Physiology, Kansas University Medical Center, 3901 Rainbow Blvd. Kansas City, KS 66160, USA.
| | - Ryan K Perkins
- School of Kinesiology, University of Michigan, 401 Washtenaw Ave., Ann Arbor, MI 48109, USA.
| | - Paul J Beisswenger
- Geisel School of Medicine, Dartmouth College, 1 Rope Ferry Rd., Hanover, NH 03755, USA.
| | - Sarah S Farabi
- Endocrine, Metabolism, & Diabetes, Division of Medicine, University of Colorado Anschutz Medical Campus, 13001 E 17th Pl., Aurora, CO 80045, USA.
| | - Lauretta Quinn
- Department of Biobehavioral Health Science, University of Illinois at Chicago, 845 Damen Ave., Chicago, IL 60612, USA.
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, 401 Washtenaw Ave., Ann Arbor, MI 48109, USA.
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