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Chapter 7: Monogenic Forms of Diabetes
CHAPTER 7 MONOGENIC FORMS OF DIABETES Mark A. Sperling, MD, and Abhimanyu Garg, MD Dr. Mark A. Sperling is Emeritus Professor and Chair, University of Pittsburgh, Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, PA. Dr. Abhimanyu Garg is Professor of Internal Medicine and Chief of the Division of Nutrition and Metabolic Diseases at University of Texas Southwestern Medical Center, Dallas, TX. SUMMARY Types 1 and 2 diabetes have multiple and complex genetic influences that interact with environmental triggers, such as viral infections or nutritional excesses, to result in their respective phenotypes: young, lean, and insulin-dependence for type 1 diabetes patients or older, overweight, and often manageable by lifestyle interventions and oral medications for type 2 diabetes patients. A small subset of patients, comprising ~2%–3% of all those diagnosed with diabetes, may have characteristics of either type 1 or type 2 diabetes but have single gene defects that interfere with insulin production, secretion, or action, resulting in clinical diabetes. These types of diabetes are known as MODY, originally defined as maturity-onset diabetes of youth, and severe early-onset forms, such as neonatal diabetes mellitus (NDM). Defects in genes involved in adipocyte development, differentiation, and death pathways cause lipodystrophy syndromes, which are also associated with insulin resistance and diabetes. Although these syndromes are considered rare, more awareness of these disorders and increased availability of genetic testing in clinical and research laboratories, as well as growing use of next generation, whole genome, or exome sequencing for clinically challenging phenotypes, are resulting in increased recognition. A correct diagnosis of MODY, NDM, or lipodystrophy syndromes has profound implications for treatment, genetic counseling, and prognosis. -
Prostaglandin E2 Deficiency Uncovers a Dominant Role for Thromboxane A2
Prostaglandin E2 deficiency uncovers a dominant role for thromboxane A2 in house dust mite-induced allergic pulmonary inflammation Tao Liua,b, Tanya M. Laidlawa,b,c, Chunli Fenga,b, Wei Xinga,b, Shiliang Shena,b, Ginger L. Milned, and Joshua A. Boycea,b,c,1 Departments of aMedicine and cPediatrics, Harvard Medical School, Boston, MA 02115; bDivision of Rheumatology, Immunology, and Allergy, Jeff and Penny Vinik Center for Allergic Disease Research, Brigham and Women’s Hospital, Boston, MA 02115; and dDepartment of Pharmacology, Vanderbilt University, Nashville, TN 37232 Edited* by K. Frank Austen, Brigham and Women’s Hospital, Boston, MA, and approved June 20, 2012 (received for review May 10, 2012) fl – Prostaglandin E2 (PGE2) is an abundant lipid in ammatory media- PGE2 production (16 19) and reduced expression of the EP2 re- tor with potent but incompletely understood anti-inflammatory ceptor (20, 21), as well as marked tissue eosinophilia and bron- actions in the lung. Deficient PGE2 generation in the lung predis- choconstrictive responses to the administration of nonselective poses to airway hyperresponsiveness and aspirin intolerance in COX inhibitors. These findings suggest potential therapeutic fi −/− asthmatic individuals. PGE2-de cient ptges mice develop exag- applications of PGE2 in asthma and AERD if the mechanisms gerated pulmonary eosinophilia and pulmonary arteriolar smooth- responsible for the homeostatic functions of PGE2 in asthma can fi muscle hyperplasia compared with PGE2-suf cient controls when be fully defined. challenged intranasally with a house dust mite extract. We now An extract (Df) of the house dust mite Dermatophagoides demonstrate that both pulmonary eosinophilia and vascular farinae contains clinically relevant protease allergens, as well as fi remodeling in the setting of PGE2 de ciency depend on thrombox- adjuvants (glycans, endotoxin) that elicit sensitization through ane A2 and signaling through the T prostanoid (TP) receptor. -
Coexpression of Microsomal Prostaglandin E Synthase With
Coexpression of Microsomal Prostaglandin E Synthase with Cyclooxygenase-2 in Human Rheumatoid Synovial Cells FUMIAKI KOJIMA, HIROAKI NARABA, YASUHARU SASAKI, RENZO OKAMOTO, TOMIHISA KOSHINO, and SHINICHI KAWAI ABSTRACT. Objective. Recently, microsomal prostaglandin (PG) E synthase (mPGES) was cloned as a terminal enzyme catalyzing PGH2 to PGE2. We investigated mPGES as well as cyclooxygenase (COX)-2, catalyzing arachidonic acid to PGH2, in synovial cells from patients with rheumatoid arthritis (RA). The effect of dexamethasone on mPGES expression was also studied. Methods. Synovial cells were treated with interleukin 1ß (IL-1ß) and dexamethasone under various conditions, and expression of mPGES mRNA and protein was analyzed by Northern blot and Western blot, respectively. Conversions of arachidonic acid or PGH2 to PGE2 were measured by ELISA. Subcellular localization of mPGES and COX-2 was determined by immunofluorescent microscopic analysis. Results. mPGES mRNA and protein expression were significantly upregulated by IL-1ß in synovial cells. COX-2 mRNA and protein were also upregulated by IL-1ß, but with a different time course from that of mPGES. Conversion of PGH2 to PGE2 was increased by IL-1ß and was correlated with mPGES expression. Increased conversion of arachidonic acid to PGE2 was maintained when mPGES and COX-2 were coexpressed. Subcellular localization of mPGES and COX-2 overlapped in the perinuclear region in IL-1ß stimulated synovial cells. Dexamethasone inhibited mRNA and protein expression for mPGES and increased conversion of arachidonic acid to PGE2, but inhibition of mPGES was weaker compared with that of COX-2 in IL-1ß stimulated cells. Conclusion. The results suggest that abundant PGE2 production at inflammation sites such as rheumatoid synovia is caused by the coordinated upregulation of mPGES and COX-2. -
Expression and Regulation of Microsomal Prostaglandin E Synthase
Expression and Regulation of Microsomal Prostaglandin E Synthase-1 in Human Osteoarthritic Cartilage and Chondrocytes XINFANG LI, HASSAN AFIF, SARANETTE CHENG, JOHANNE MARTEL-PELLETIER, JEAN-PIERRE PELLETIER, PIERRE RANGER, and HASSAN FAHMI ABSTRACT. Objective. Elevated production of prostaglandin E2 (PGE2) plays an important role in the pathogen- esis of arthritis. Recently, an inducible microsomal prostaglandin E synthase-1 (mPGES-1) was identified. This enzyme is functionally coupled with cyclooxygenase-2 (COX-2) and converts the COX product PGH2 to PGE2. We analyzed expression of mPGES-1 in human normal and osteoarthritic (OA) cartilage and determined the effect of different inflammatory agonists on the expression of mPGES-1 in OA chondrocytes. Methods. Expression of mPGES-1 mRNA and protein in cartilage was determined by quantitative real-time reverse transcriptase-polymerase chain reaction and immunohistochemistry, respectively. OA chondrocytes were treated with different inflammatory agents, and mPGES-1 protein expression was evaluated by Western blot. Activation of the mPGES-1 promoter was assessed in transient trans- fection experiments. Results. Levels of mPGES-1 mRNA and protein were markedly elevated in OA versus normal car- tilage. Treatment of chondrocytes with interleukin 1ß (IL-1ß) induced expression of mPGES-1 pro- tein in a dose- and time-dependent manner. This appears to occur at the transcriptional level, as IL- 1ß induced expression of mPGES-1 mRNA and the activity of this gene promoter. Tumor necrosis factor-α (TNF-α) and IL-17 also upregulated expression of mPGES-1 protein and displayed a syn- ergistic effect with IL-1ß. Peroxisome proliferator-activated receptor-γ ligands, 15-deoxy-∆12,14- prostaglandin J2 and troglitazone, inhibited IL-1ß-induced mPGES-1 protein expression, an effect that was reversed by exogenous PGE2. -
Abstracts from the 9Th Biennial Scientific Meeting of The
International Journal of Pediatric Endocrinology 2017, 2017(Suppl 1):15 DOI 10.1186/s13633-017-0054-x MEETING ABSTRACTS Open Access Abstracts from the 9th Biennial Scientific Meeting of the Asia Pacific Paediatric Endocrine Society (APPES) and the 50th Annual Meeting of the Japanese Society for Pediatric Endocrinology (JSPE) Tokyo, Japan. 17-20 November 2016 Published: 28 Dec 2017 PS1 Heritable forms of primary bone fragility in children typically lead to Fat fate and disease - from science to global policy a clinical diagnosis of either osteogenesis imperfecta (OI) or juvenile Peter Gluckman osteoporosis (JO). OI is usually caused by dominant mutations affect- Office of Chief Science Advsor to the Prime Minister ing one of the two genes that code for two collagen type I, but a re- International Journal of Pediatric Endocrinology 2017, 2017(Suppl 1):PS1 cessive form of OI is present in 5-10% of individuals with a clinical diagnosis of OI. Most of the involved genes code for proteins that Attempts to deal with the obesity epidemic based solely on adult be- play a role in the processing of collagen type I protein (BMP1, havioural change have been rather disappointing. Indeed the evidence CREB3L1, CRTAP, LEPRE1, P4HB, PPIB, FKBP10, PLOD2, SERPINF1, that biological, developmental and contextual factors are operating SERPINH1, SEC24D, SPARC, from the earliest stages in development and indeed across generations TMEM38B), or interfere with osteoblast function (SP7, WNT1). Specific is compelling. The marked individual differences in the sensitivity to the phenotypes are caused by mutations in SERPINF1 (recessive OI type obesogenic environment need to be understood at both the individual VI), P4HB (Cole-Carpenter syndrome) and SEC24D (‘Cole-Carpenter and population level. -
A Computational Approach for Defining a Signature of Β-Cell Golgi Stress in Diabetes Mellitus
Page 1 of 781 Diabetes A Computational Approach for Defining a Signature of β-Cell Golgi Stress in Diabetes Mellitus Robert N. Bone1,6,7, Olufunmilola Oyebamiji2, Sayali Talware2, Sharmila Selvaraj2, Preethi Krishnan3,6, Farooq Syed1,6,7, Huanmei Wu2, Carmella Evans-Molina 1,3,4,5,6,7,8* Departments of 1Pediatrics, 3Medicine, 4Anatomy, Cell Biology & Physiology, 5Biochemistry & Molecular Biology, the 6Center for Diabetes & Metabolic Diseases, and the 7Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202; 2Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202; 8Roudebush VA Medical Center, Indianapolis, IN 46202. *Corresponding Author(s): Carmella Evans-Molina, MD, PhD ([email protected]) Indiana University School of Medicine, 635 Barnhill Drive, MS 2031A, Indianapolis, IN 46202, Telephone: (317) 274-4145, Fax (317) 274-4107 Running Title: Golgi Stress Response in Diabetes Word Count: 4358 Number of Figures: 6 Keywords: Golgi apparatus stress, Islets, β cell, Type 1 diabetes, Type 2 diabetes 1 Diabetes Publish Ahead of Print, published online August 20, 2020 Diabetes Page 2 of 781 ABSTRACT The Golgi apparatus (GA) is an important site of insulin processing and granule maturation, but whether GA organelle dysfunction and GA stress are present in the diabetic β-cell has not been tested. We utilized an informatics-based approach to develop a transcriptional signature of β-cell GA stress using existing RNA sequencing and microarray datasets generated using human islets from donors with diabetes and islets where type 1(T1D) and type 2 diabetes (T2D) had been modeled ex vivo. To narrow our results to GA-specific genes, we applied a filter set of 1,030 genes accepted as GA associated. -
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Supplementary Figure S1. Results of flow cytometry analysis, performed to estimate CD34 positivity, after immunomagnetic separation in two different experiments. As monoclonal antibody for labeling the sample, the fluorescein isothiocyanate (FITC)- conjugated mouse anti-human CD34 MoAb (Mylteni) was used. Briefly, cell samples were incubated in the presence of the indicated MoAbs, at the proper dilution, in PBS containing 5% FCS and 1% Fc receptor (FcR) blocking reagent (Miltenyi) for 30 min at 4 C. Cells were then washed twice, resuspended with PBS and analyzed by a Coulter Epics XL (Coulter Electronics Inc., Hialeah, FL, USA) flow cytometer. only use Non-commercial 1 Supplementary Table S1. Complete list of the datasets used in this study and their sources. GEO Total samples Geo selected GEO accession of used Platform Reference series in series samples samples GSM142565 GSM142566 GSM142567 GSM142568 GSE6146 HG-U133A 14 8 - GSM142569 GSM142571 GSM142572 GSM142574 GSM51391 GSM51392 GSE2666 HG-U133A 36 4 1 GSM51393 GSM51394 only GSM321583 GSE12803 HG-U133A 20 3 GSM321584 2 GSM321585 use Promyelocytes_1 Promyelocytes_2 Promyelocytes_3 Promyelocytes_4 HG-U133A 8 8 3 GSE64282 Promyelocytes_5 Promyelocytes_6 Promyelocytes_7 Promyelocytes_8 Non-commercial 2 Supplementary Table S2. Chromosomal regions up-regulated in CD34+ samples as identified by the LAP procedure with the two-class statistics coded in the PREDA R package and an FDR threshold of 0.5. Functional enrichment analysis has been performed using DAVID (http://david.abcc.ncifcrf.gov/) -
Myopathy Genes (HGNC) Neuropathy (HGNC) Neuromuscular Disease
Myopathy Genes Neuropathy Neuromuscular Disease (HGNC) (HGNC) (HGNC) ABHD5 ABCA1 ADCK3 ACTG2 ACO2 AGRN AGK AGXT ALS2 ALDOA AIFM1 ANG AMER1 ALAD AP4B1 ANO5 AMACR AP4E1 AR AP1S1 AP4M1 AUH APTX AP4S1 B4GALT1 AR AP5Z1 CACNA1S ATL3 ATM CASQ1 B4GALNT1 ATXN10 CCDC78 BAG3 ATXN7 CHCHD10 BRP44L BEAN1 CHRNA1 C12orf65 C9orf72 CHRNB1 C19orf12 CACNB4 CHRND C1NH CAPN3 CHRNE CECR1 CHAT CLPB CISD2 CHKB COL6A1 CLCF1 CHMP2B COL6A2 CLCN2 CHRNG COL6A3 CLP1 CLCN1 COLQ CMT2G COL9A3 CTNS CMT2H COQ2 DGUOK CMTDIA COQ6 DNA2 CMTX2 COQ9 DNAJB6 CMTX3 COX15 DNAJC19 COASY CPT1A DNM2 COX6A1 CYP7B1 DPM2 CPOX DAG1 DYSF CYP27A1 DDHD2 EMD CYP2U1 DOK7 EPG5 DARS2 DPAGT1 FAM111B DCAF8 DPM3 FBXL4 DDHD1 DUX4 FKBP14 DFNX5 ECEL1 FKRP DHTKD1 ERBB3 FLH1 DIAPH3 ERLIN2 FLNC DNAJB2 FA2H HNRNPA1 DNAJC3 FKTN HNRNPDL ELOVL5 FUS HNRPA2B1 ERCC8 G6PC KLHL40 FAH GFPT1 KLHL41 FAM126A GLE1 LAMA2 FBN1 GYS2 LDB3 FMR1 HSPD1 LMOD3 FXN IFRD1 MEGF10 GALC INF2 MGME1 GBE1 ISPD MTAP GJC2 ITGA7 MTMR14 GP1BA ITPR1 MYF6 HADHA KCNA1 MYH14 HADHB KCNC3 MYLK2 HFE KCNE3 NARS2 HINT1 KCNJ18 NEB HK1 KCNJ2 ORAI1 HMBS KIAA0196 PRKAG2 HSD17B4 KIF21A PTEN HSN1B L1CAM RBCK1 IARS2 LAMB2 RET IGHMBP2 LARGE RMND1 KCNJ10 MCCC2 SCN4A KIF5A MRE11A SERAC1 LRSAM1 MRPL3 SGCA LYST MTO1 SIL1 MANBA MTPAP SPEG MARS MTTP STAC3 MTATP6 MUSK STIM1 MYH14 MYBPC3 SYNE1 MYOT MYH3 SYNE2 NAMSD MYH8 TAZ NF2 NF1 TIA1 NGLY1 NIPA1 TMEM43 NMSR NOP56 TNPO3 NOTCH3 OPTN TNXB OPA1 PDSS2 TPM2 OPA3 PDYN TRPV4 OTOF PFN1 UBA1 PDK3 PHKA2 VCP PDSS1 PHKG2 XDH PEX10 PHOX2A ACADS PEX2 PIP5K1C ACADVL PMM2 PLEC ACTA1 PNPLA6 PLP1 AGL PPOX POMGNT1 AMPD1 PRICKLE1 -
Effect of Prostanoids on Human Platelet Function: an Overview
International Journal of Molecular Sciences Review Effect of Prostanoids on Human Platelet Function: An Overview Steffen Braune, Jan-Heiner Küpper and Friedrich Jung * Institute of Biotechnology, Molecular Cell Biology, Brandenburg University of Technology, 01968 Senftenberg, Germany; steff[email protected] (S.B.); [email protected] (J.-H.K.) * Correspondence: [email protected] Received: 23 October 2020; Accepted: 23 November 2020; Published: 27 November 2020 Abstract: Prostanoids are bioactive lipid mediators and take part in many physiological and pathophysiological processes in practically every organ, tissue and cell, including the vascular, renal, gastrointestinal and reproductive systems. In this review, we focus on their influence on platelets, which are key elements in thrombosis and hemostasis. The function of platelets is influenced by mediators in the blood and the vascular wall. Activated platelets aggregate and release bioactive substances, thereby activating further neighbored platelets, which finally can lead to the formation of thrombi. Prostanoids regulate the function of blood platelets by both activating or inhibiting and so are involved in hemostasis. Each prostanoid has a unique activity profile and, thus, a specific profile of action. This article reviews the effects of the following prostanoids: prostaglandin-D2 (PGD2), prostaglandin-E1, -E2 and E3 (PGE1, PGE2, PGE3), prostaglandin F2α (PGF2α), prostacyclin (PGI2) and thromboxane-A2 (TXA2) on platelet activation and aggregation via their respective receptors. Keywords: prostacyclin; thromboxane; prostaglandin; platelets 1. Introduction Hemostasis is a complex process that requires the interplay of multiple physiological pathways. Cellular and molecular mechanisms interact to stop bleedings of injured blood vessels or to seal denuded sub-endothelium with localized clot formation (Figure1). -
Prostaglandin Signaling Regulates Nephron Segment Patterning Of
RESEARCH ARTICLE Prostaglandin signaling regulates nephron segment patterning of renal progenitors during zebrafish kidney development Shahram Jevin Poureetezadi1,2, Christina N Cheng1,2, Joseph M Chambers1,2, Bridgette E Drummond1,2, Rebecca A Wingert1,2* 1Department of Biological Sciences, University of Notre Dame, Notre Dame, United States; 2Center for Stem Cells and Regenerative Medicine, Center for Zebrafish Research, University of Notre Dame, Notre Dame, United States Abstract Kidney formation involves patterning events that induce renal progenitors to form nephrons with an intricate composition of multiple segments. Here, we performed a chemical genetic screen using zebrafish and discovered that prostaglandins, lipid mediators involved in many physiological functions, influenced pronephros segmentation. Modulating levels of prostaglandin E2 (PGE2) or PGB2 restricted distal segment formation and expanded a proximal segment lineage. Perturbation of prostaglandin synthesis by manipulating Cox1 or Cox2 activity altered distal segment formation and was rescued by exogenous PGE2. Disruption of the PGE2 receptors Ptger2a and Ptger4a similarly affected the distal segments. Further, changes in Cox activity or irx3b sim1a PGE2 levels affected expression of the transcription factors and that mitigate pronephros segment patterning. These findings show for the first time that PGE2 is a regulator of nephron formation in the zebrafish embryonic kidney, thus revealing that prostaglandin signaling may have implications for renal birth defects and other diseases. DOI: 10.7554/eLife.17551.001 *For correspondence: rwingert@ nd.edu Introduction Competing interests: The The kidney serves central functions in metabolic waste excretion, osmoregulation, and electrolyte authors declare that no homeostasis. Vertebrate kidney organogenesis is a dynamic process involving the generation of up competing interests exist. -
ASAH1 Variant Causing a Mild SMA Phenotype with No Myoclonic Epilepsy: a Clinical, Biochemical and Molecular Study
European Journal of Human Genetics (2016) 24, 1578–1583 & 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved 1018-4813/16 www.nature.com/ejhg ARTICLE ASAH1 variant causing a mild SMA phenotype with no myoclonic epilepsy: a clinical, biochemical and molecular study Massimiliano Filosto*,1, Massimo Aureli2, Barbara Castellotti3, Fabrizio Rinaldi1, Domitilla Schiumarini2, Manuela Valsecchi2, Susanna Lualdi4, Raffaella Mazzotti4, Viviana Pensato3, Silvia Rota1, Cinzia Gellera3, Mirella Filocamo4 and Alessandro Padovani1 ASAH1 gene encodes for acid ceramidase that is involved in the degradation of ceramide into sphingosine and free fatty acids within lysosomes. ASAH1 variants cause both the severe and early-onset Farber disease and rare cases of spinal muscular atrophy (SMA) with progressive myoclonic epilepsy (SMA-PME), phenotypically characterized by childhood onset of proximal muscle weakness and atrophy due to spinal motor neuron degeneration followed by occurrence of severe and intractable myoclonic seizures and death in the teenage years. We studied two subjects, a 30-year-old pregnant woman and her 17-year-old sister, affected with a very slowly progressive non-5q SMA since childhood. No history of seizures or myoclonus has been reported and EEG was unremarkable. The molecular study of ASAH1 gene showed the presence of the homozygote nucleotide variation c.124A4G (r.124a4g) that causes the amino acid substitution p.Thr42Ala. Biochemical evaluation of cultured fibroblasts showed both reduction in ceramidase activity and accumulation of ceramide compared with the normal control. This study describes for the first time the association between ASAH1 variants and an adult SMA phenotype with no myoclonic epilepsy nor death in early age, thus expanding the phenotypic spectrum of ASAH1-related SMA. -
Burden of Rare Variants in ALS and Axonal Hereditary Neuropathy Genes Influence Survival In
International Journal of Molecular Sciences Article Burden of Rare Variants in ALS and Axonal Hereditary Neuropathy Genes Influence Survival in ALS: Insights from a Next Generation Sequencing Study of an Italian ALS Cohort Stefania Scarlino 1, Teuta Domi 1, Laura Pozzi 1 , Alessandro Romano 1, Giovanni Battista Pipitone 2, Yuri Matteo Falzone 1,3, Lorena Mosca 4, Silvana Penco 4, Christian Lunetta 5, Valeria Sansone 5,6, Lucio Tremolizzo 7, Raffaella Fazio 3, Federica Agosta 8, 3,8,9,10 2 1,3, , 1, Massimo Filippi , Paola Carrera , Nilo Riva * y and Angelo Quattrini y 1 Experimental Neuropathology Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, San Raffaele Scientific Institute, 20132 Milan, Italy; [email protected] (S.S.); [email protected] (T.D.); [email protected] (L.P.); [email protected] (A.R.); [email protected] (Y.M.F.); [email protected] (A.Q.) 2 Laboratory of Clinical Molecular Biology, Unit of Genomics for Human Disease Diagnosis, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, 20132 Milan, Italy; [email protected] (G.B.P.); [email protected] (P.C.) 3 Neurology Unit, San Raffaele Scientific Institute, 20132 Milan, Italy; fazio.raff[email protected] (R.F.); fi[email protected] (M.F.) 4 Medical Genetic Unit, Department of Laboratory Medicine, Niguarda Hospital, 20132 Milan, Italy; [email protected] (L.M.); [email protected] (S.P.) 5 NEuroMuscular Omnicentre (NEMO), Fondazione Serena Onlus, Milan 20132, Italy; [email protected]