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Gottschalk A, Sczakiel HL, Hülsemann W, Schwartzmann S, Abad-Perez AT, Grünhagen J, Ott CE, Spielmann M, Horn D, Mundlos S, Jamsheer A, Mensah MA. HOXD13-associated synpolydactyly: Extending and validating the genotypic and phenotypic spectrum with 38 new and 49 published families. Genet Med 2023; 25:100928. [PMID: 37427568 DOI: 10.1016/j.gim.2023.100928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 07/02/2023] [Accepted: 07/02/2023] [Indexed: 07/11/2023] Open
Abstract
PURPOSE HOXD13 is an important regulator of limb development. Pathogenic variants in HOXD13 cause synpolydactyly type 1 (SPD1). How different types and positions of HOXD13 variants contribute to genotype-phenotype correlations, penetrance, and expressivity of SPD1 remains elusive. Here, we present a novel cohort and a literature review to elucidate HOXD13 phenotype-genotype correlations. METHODS Patients with limb anomalies suggestive of SPD1 were selected for analysis of HOXD13 by Sanger sequencing, repeat length analysis, and next-generation sequencing. Literature was reviewed for HOXD13 heterozygotes. Variants were annotated for phenotypic data. Severity was calculated, and cluster and decision-tree analyses were performed. RESULTS We identified 98 affected members of 38 families featuring 11 different (likely) causative variants and 4 variants of uncertain significance. The most frequent (25/38) were alanine repeat expansions. Phenotypes ranged from unaffected heterozygotes to severe osseous synpolydactyly, with intra- and inter-familial heterogeneity and asymmetry. A literature review provided 160 evaluable affected members of 49 families with SPD1. Computer-aided analysis only corroborated a positive correlation between alanine repeat length and phenotype severity. CONCLUSION Our findings support that HOXD13-protein condensation in addition to haploinsufficiency is the molecular pathomechanism of SPD1. Our data may, also, facilitate the interpretation of synpolydactyly radiographs by future automated tools.
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Affiliation(s)
- Annika Gottschalk
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Medizinische Genetik und Humangenetik, Berlin, Germany
| | - Henrike L Sczakiel
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Medizinische Genetik und Humangenetik, Berlin, Germany; Max Planck Institute for Molecular Genetics, RG Development & Disease, Berlin, Germany; Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Junior Clinician Scientist Program, Berlin, Germany
| | - Wiebke Hülsemann
- Handsurgery Department, Children's Hospital Wilhelmstift, Hamburg, Germany
| | - Sarina Schwartzmann
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Medizinische Genetik und Humangenetik, Berlin, Germany
| | - Angela T Abad-Perez
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Medizinische Genetik und Humangenetik, Berlin, Germany
| | - Johannes Grünhagen
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Medizinische Genetik und Humangenetik, Berlin, Germany; Labor Berlin Charité Vivantes GmbH, Department of Human Genetics, Berlin, Germany
| | - Claus-Eric Ott
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Medizinische Genetik und Humangenetik, Berlin, Germany
| | - Malte Spielmann
- Max Planck Institute for Molecular Genetics, Human Molecular Genomics Group, Berlin, Germany; Institut für Humangenetik Lübeck, Universität zu Lübeck, Lübeck, Germany
| | - Denise Horn
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Medizinische Genetik und Humangenetik, Berlin, Germany
| | - Stefan Mundlos
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Medizinische Genetik und Humangenetik, Berlin, Germany; Max Planck Institute for Molecular Genetics, RG Development & Disease, Berlin, Germany
| | - Aleksander Jamsheer
- Department of Medical Genetics, Poznan University of Medical Sciences, Poznan, Poland; Centers for Medical Genetics, GENESIS, Poznan, Poland
| | - Martin A Mensah
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Medizinische Genetik und Humangenetik, Berlin, Germany; Max Planck Institute for Molecular Genetics, RG Development & Disease, Berlin, Germany; Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Digital Clinician Scientist Program, Berlin, Germany.
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Boschann F, Kosmehl S, Bloching M, Grünhagen J, Hildebrand G, Horn D, Lyutenski S. Novel noncanonical splice site variant causes mild CHD7-related disorder with variable intrafamilial expressivity. Am J Med Genet A 2023; 191:1128-1132. [PMID: 36708132 DOI: 10.1002/ajmg.a.63122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 01/29/2023]
Abstract
The clinical diagnosis criteria for CHARGE syndrome have been revised several times in the last 25 years. Variable expressivity and reduced penetrance are known, particularly in mild and familial cases. Therefore, it has been proposed to include the detection of a pathogenic CHD7 variant as a major diagnostic criterion. However, intronic variants not located at the canonical splice site are still underrepresented in mutation databases, often because functional analysis is not performed in the diagnostic setting. Here, we report a two-generation family that did not meet the criteria for CHARGE syndrome, until the molecular findings were taken into account. By exome sequencing, we detected an intronic variant in a male individual, who presented with unilateral external ear malformation, bilateral semicircular canal aplasia, polydactyly, vertebral body fusion and a heart defect. The variant was inherited by his mother, who also had bilateral semicircular canal aplasia additionally to unilateral sensorineural hearing impairment, unilateral mandibular palpebral synkinesia, orofacial cleft, and dysphagia. Using RNA studies, we were able to demonstrate that aberrant splicing occurs at an upstream cryptic splice acceptor site, resulting in a frameshift and premature stop of translation. Our data show causality of the noncanonical intronic CHD7 variant and end the diagnostic odyssey of this unsolved phenotype of the family.
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Affiliation(s)
- Felix Boschann
- Institute of Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Clinician Scientist Program, Berlin, Germany
| | - Sabine Kosmehl
- Department of Otorhinolaryngology, Helios Hospital Berlin-Buch, Berlin, Germany
| | - Marc Bloching
- Department of Otorhinolaryngology, Helios Hospital Berlin-Buch, Berlin, Germany
| | - Johannes Grünhagen
- Labor Berlin Charité Vivantes GmbH-Corporate Member of Institute for Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Gabriele Hildebrand
- Institute of Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Denise Horn
- Institute of Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Stefan Lyutenski
- Department of Otorhinolaryngology, Helios Hospital Berlin-Buch, Berlin, Germany
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3
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Dame C, Horn D, Schomburg L, Grünhagen J, Chillon TS, Tietze A, Vogt A, Bührer C. Fatal congenital copper transport defect caused by a homozygous likely pathogenic variant of SLC31A1. Clin Genet 2022; 103:585-589. [PMID: 36562171 DOI: 10.1111/cge.14289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/14/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
Known hereditary human diseases featuring impaired copper trafficking across cellular membranes involve ATP7A (Menkes disease, occipital horn disease, X-linked spinal muscular atrophy type 3) and ATP7B (Wilson disease). Herein, we report a newborn infant of consanguineous parents with a homozygous pathogenic variant in a highly conserved sequence of SLC31A1, coding for the copper influx transporter 1, CTR1. This missense variant, c.236T > C, was detected by whole exome sequencing. The infant was born with pulmonary hypoplasia and suffered from severe respiratory distress immediately after birth, necessitating aggressive mechanical ventilation. At 2 weeks of age, multifocal brain hemorrhages were diagnosed by cerebral ultrasound and magnetic resonance imaging, together with increased tortuosity of cerebral arteries. Ensuing seizures were only partly controlled by antiepileptic drugs, and the infant became progressively comatose. Laboratory investigations revealed very low serum concentrations of copper and ceruloplasmin. No hair shaft abnormalities were detected by dermatoscopy or light microscopic analyses of embedded hair shafts obtained at 4 weeks of life. The infant died after redirection of care and elective cessation of invasive mechanical ventilation at 1 month of age. This case adds SLC31A1 to the genes implicated in severe hereditary disorders of copper transport in humans.
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Affiliation(s)
- Christof Dame
- Department of Neonatology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Denise Horn
- Department of Human Genetics, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Lutz Schomburg
- Department of Experimental Endocrinology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Johannes Grünhagen
- Department of Human Genetics, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Human Genetics, Labor Berlin Charité Vivantes, Berlin, Germany
| | - Thilo Samson Chillon
- Department of Experimental Endocrinology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Anna Tietze
- Department of Neuroradiology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Annika Vogt
- Department of Dermatology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph Bührer
- Department of Neonatology, Charité Universitätsmedizin Berlin, Berlin, Germany
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Stürznickel J, Heider F, Delsmann A, Gödel M, Grünhagen J, Huber TB, Kornak U, Amling M, Oheim R. Clinical Spectrum of Hereditary Hypophosphatemic Rickets With Hypercalciuria (HHRH). J Bone Miner Res 2022; 37:1580-1591. [PMID: 35689455 DOI: 10.1002/jbmr.4630] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 05/19/2022] [Accepted: 06/04/2022] [Indexed: 11/11/2022]
Abstract
Hereditary hypophosphatemic rickets with hypercalciuria (HHRH) represents an FGF23-independent disease caused by biallelic variants in the solute carrier family 34-member 3 (SLC34A3) gene. HHRH is characterized by chronic hypophosphatemia and an increased risk for nephrocalcinosis and rickets/osteomalacia, muscular weakness, and secondary limb deformity. Biochemical changes, but no relevant skeletal changes, have been reported for heterozygous SLC34A3 carriers. Therefore, we assessed the characteristics of individuals with biallelic and monoallelic SLC34A3 variants. In 8 index patients and 5 family members, genetic analysis was performed using a custom gene panel. The skeletal assessment comprised biochemical parameters, areal bone mineral density (aBMD), and bone microarchitecture. Pathogenic SLC34A3 variants were revealed in 7 of 13 individuals (2 homozygous, 5 heterozygous), whereas 3 of 13 carried monoallelic variants of unknown significance. Whereas both homozygous individuals had nephrocalcinosis, only one displayed a skeletal phenotype consistent with HHRH. Reduced to low-normal phosphate levels, decreased tubular reabsorption of phosphate (TRP), and high-normal to elevated values of 1,25-OH2 -D3 accompanied by normal cFGF23 levels were revealed independently of mutational status. Interestingly, individuals with nephrocalcinosis showed significantly increased calcium excretion and 1,25-OH2 -D3 levels but normal phosphate reabsorption. Furthermore, aBMD Z-score <-2.0 was revealed in 4 of 8 heterozygous carriers, and HR-pQCT analysis showed a moderate decrease in structural parameters. Our findings highlight the clinical relevance also of monoallelic SLC34A3 variants, including their potential skeletal impairment. Calcium excretion and 1,25-OH2 -D3 levels, but not TRP, were associated with nephrocalcinosis. Future studies should investigate the effects of distinct SLC34A3 variants and optimize treatment and monitoring regimens to prevent nephrocalcinosis and skeletal deterioration. © 2022 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Julian Stürznickel
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Fiona Heider
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alena Delsmann
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Gödel
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Johannes Grünhagen
- Labor Berlin Charité Vivantes GmbH-corporate member of Institute for Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Tobias B Huber
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Uwe Kornak
- Institute for Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany.,BIH Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany.,Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ralf Oheim
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Martin Zeitz Center for Rare Diseases, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Abstract
We report about a 28-year-old woman with an anaphylactic reaction to falafel. The diagnosis of type 1 allergy to peas was made based on the detailed medical history, the sensitization profile and an oral food challenge. Pea (Pisum sativum) is a legume that is increasing used, for example, as protein flour in vegetarian and vegan food products. In addition to the case report, we discuss the anaphylaxis risk of food used in the vegan diet.
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Affiliation(s)
- S Dölle-Bierke
- Klinik für Dermatologie, Venerologie und Allergologie Abteilung Allergologie und Immunologie, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland.
| | - J Grünhagen
- Klinik für Dermatologie, Venerologie und Allergologie Abteilung Allergologie und Immunologie, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland
| | - M Worm
- Klinik für Dermatologie, Venerologie und Allergologie Abteilung Allergologie und Immunologie, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland
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6
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Maris I, Dölle‐Bierke S, Renaudin J, Lange L, Koehli A, Spindler T, Hourihane J, Scherer K, Nemat K, Kemen C, Neustädter I, Vogelberg C, Reese T, Yildiz I, Szepfalusi Z, Ott H, Straube H, Papadopoulos NG, Hämmerling S, Staden U, Polz M, Mustakov T, Cichocka‐Jarosz E, Cocco R, Fiocchi AG, Fernandez‐Rivas M, Worm M, Grünhagen J, Wittenberg M, Beyer K, Henschel A, Küper S, Möser A, Fuchs T, Ruëff F, Wedi B, Hansen G, Buck T, Büsselberg J, Drägerdt R, Pfeffer L, Dickel H, Körner‐Rettberg C, Merk H, Lehmann S, Bauer A, Nordwig A, Zeil S, Hannapp C, Wagner N, Rietschel E, Hunzelmann N, Huseynow I, Treudler R, Aurich S, Prenzel F, Klimek L, Pfaar O, Reider N, Aberer W, Varga E, Bogatu B, Schmid‐Grendelmeier P, Guggenheim R, Riffelmann F, Kreft B, Kinaciyan K, Hartl L, Ebner C, Horak F, Brehler R, Witte J, Buss M, Hompes S, Bieber T, Gernert S, Bücheler M, Rabe U, Brosi W, Nestoris S, Hawranek T, Lang R, Bruns R, Pföhler C, Eng P, Schweitzer‐Krantz S, Meller S, Rebmann H, Fischer J, Stichtenoth G, Thies S, Gerstlauer M, Utz P, Neustädter I, Klinge J, Volkmuth S, Plank‐Habibi S, Schilling B, Kleinheinz A, Brückner A, Schäkel K, Manolaraki I, Kowalski M, Solarewicz‐Madajek K, Tscheiller S, Seidenberg J, Cardona V, Garcia B, Bilo M, Cabañes Higuero N, Vega Castro A, Poziomkowska‐Gęsicka I, Büsing S, Virchow C, Christoff G, Jappe U, Müller S, Knöpfel F, Correard A, Rogala B, Montoro A, Brandes A, Muraro A, Zimmermann N, Hernandez D, Minale P, Niederwimmer J, Zahel B, Dahdah L, Arasi S, Reissig A, Eitelberger F, Asero R, Hermann F, Zeidler S, Pistauer S, Geißler M, Ensina L, Plaza Martin A, Meister J, Stieglitz S, Hamelmann E. Peanut-induced anaphylaxis in children and adolescents: Data from the European Anaphylaxis Registry. Allergy 2021; 76:1517-1527. [PMID: 33274436 DOI: 10.1111/all.14683] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/26/2020] [Accepted: 11/10/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Peanut allergy has a rising prevalence in high-income countries, affecting 0.5%-1.4% of children. This study aimed to better understand peanut anaphylaxis in comparison to anaphylaxis to other food triggers in European children and adolescents. METHODS Data was sourced from the European Anaphylaxis Registry via an online questionnaire, after in-depth review of food-induced anaphylaxis cases in a tertiary paediatric allergy centre. RESULTS 3514 cases of food anaphylaxis were reported between July 2007 - March 2018, 56% in patients younger than 18 years. Peanut anaphylaxis was recorded in 459 children and adolescents (85% of all peanut anaphylaxis cases). Previous reactions (42% vs. 38%; p = .001), asthma comorbidity (47% vs. 35%; p < .001), relevant cofactors (29% vs. 22%; p = .004) and biphasic reactions (10% vs. 4%; p = .001) were more commonly reported in peanut anaphylaxis. Most cases were labelled as severe anaphylaxis (Ring&Messmer grade III 65% vs. 56% and grade IV 1.1% vs. 0.9%; p = .001). Self-administration of intramuscular adrenaline was low (17% vs. 15%), professional adrenaline administration was higher in non-peanut food anaphylaxis (34% vs. 26%; p = .003). Hospitalization was higher for peanut anaphylaxis (67% vs. 54%; p = .004). CONCLUSIONS The European Anaphylaxis Registry data confirmed peanut as one of the major causes of severe, potentially life-threatening allergic reactions in European children, with some characteristic features e.g., presence of asthma comorbidity and increased rate of biphasic reactions. Usage of intramuscular adrenaline as first-line treatment is low and needs to be improved. The Registry, designed as the largest database on anaphylaxis, allows continuous assessment of this condition.
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Affiliation(s)
- Ioana Maris
- Bon Secours Hospital Cork/Paediatrics and Child HealthUniversity College Cork Cork Ireland
| | - Sabine Dölle‐Bierke
- Division of Allergy and Immunology Department of Dermatology, Venereology and Allergology Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
| | | | - Lars Lange
- Department of Paediatrics St. Marien‐Hospital Bonn Germany
| | - Alice Koehli
- Division of Allergology University Children’s Hospital Zurich Zürich Switzerland
| | - Thomas Spindler
- Department of Paediatrics Medical Campus Hochgebirgsklinik Davos Davos Switzerland
| | - Jonathan Hourihane
- Paediatrics and Child Health Royal College of Surgeons in Ireland Dublin Ireland
- Children’s Health Ireland Dublin Ireland
| | | | - Katja Nemat
- Practice for paediatric pneumology and allergology Kinderzentrum Dresden‐Friedrichstadt Dresden Germany
| | - C. Kemen
- Department of Paediatrics Children’s Hospital WILHELMSTIFT Hamburg Germany
| | - Irena Neustädter
- Department of Paediatrics Hallerwiese Cnopfsche Kinderklinik Nuremberg Germany
| | - Christian Vogelberg
- Department of Paediatrics Universitätsklinikum Carl Gustav CarusTechnical University Dresden Germany
| | - Thomas Reese
- Department of Paediatrics Mathias‐Spital Rheine Rheine Germany
| | - Ismail Yildiz
- Department of Paediatrics Friedrich‐Ebert‐Krankenhaus Neumuenster Germany
| | - Zsolt Szepfalusi
- Division of Paediatric Pulmonology, Allergology and Endocrinology Department of Paediatrics and Adolescent Medicine Competence Center Paediatrics Medical University of Vienna Vienna Austria
| | - Hagen Ott
- Division of Paediatric Dermatology and Allergology Epidermolysis bullosa‐Centre HannoverChildren’s Hospital AUF DER BULT Hanover Germany
| | - Helen Straube
- Division of Allergology Darmstädter Kinderkliniken Prinzessin Margaret Darmstadt Germany
| | - Nikolaos G. Papadopoulos
- Allergy Department 2nd Paediatric Clinic National and Kapodistrian University of Athens Athens Greece
- Division of Infection Immunity& Respiratory Medicine University of Manchester Manchester UK
| | - Susanne Hämmerling
- Division of Paediatric Pulmonology and Allergology University Children`s Hospital Heidelberg Heidelberg Germany
| | - Ute Staden
- Paediatric Pneumology & Allergology Medical practice Klettke/Staden Berlin Germany
| | - Michael Polz
- Department of Paediatrics GPR Klinikum Rüsselsheim Germany
| | - Tihomir Mustakov
- Chair of Allergy University Hospital Alexandrovska Sofia Bulgaria
| | - Ewa Cichocka‐Jarosz
- Department of Paediatrics Jagiellonian University Medical College Krakow Poland
| | - Renata Cocco
- Division of Allergy Clinical Immunology and Rheumatology Department of Paediatrics Federal University of São Paulo São Paulo Brazil
| | | | | | - Margitta Worm
- Division of Allergy and Immunology Department of Dermatology, Venereology and Allergology Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
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Khayal LA, Grünhagen J, Provazník I, Mundlos S, Kornak U, Robinson PN, Ott CE. Transcriptional profiling of murine osteoblast differentiation based on RNA-seq expression analyses. Bone 2018; 113:29-40. [PMID: 29653293 DOI: 10.1016/j.bone.2018.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/03/2018] [Accepted: 04/09/2018] [Indexed: 12/19/2022]
Abstract
Osteoblastic differentiation is a multistep process characterized by osteogenic induction of mesenchymal stem cells, which then differentiate into proliferative pre-osteoblasts that produce copious amounts of extracellular matrix, followed by stiffening of the extracellular matrix, and matrix mineralization by hydroxylapatite deposition. Although these processes have been well characterized biologically, a detailed transcriptional analysis of murine primary calvaria osteoblast differentiation based on RNA sequencing (RNA-seq) analyses has not previously been reported. Here, we used RNA-seq to obtain expression values of 29,148 genes at four time points as murine primary calvaria osteoblasts differentiate in vitro until onset of mineralization was clearly detectable by microscopic inspection. Expression of marker genes confirmed osteogenic differentiation. We explored differential expression of 1386 protein-coding genes using unsupervised clustering and GO analyses. 100 differentially expressed lncRNAs were investigated by co-expression with protein-coding genes that are localized within the same topologically associated domain. Additionally, we monitored expression of 237 genes that are silent or active at distinct time points and compared differential exon usage. Our data represent an in-depth profiling of murine primary calvaria osteoblast differentiation by RNA-seq and contribute to our understanding of genetic regulation of this key process in osteoblast biology.
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Affiliation(s)
- Layal Abo Khayal
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Department of Biomedical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic
| | - Johannes Grünhagen
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Ivo Provazník
- Department of Biomedical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic; International Clinical Research Center, Center of Biomedical Engineering, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Stefan Mundlos
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Research Group Development and Disease, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Uwe Kornak
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Research Group Development and Disease, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Peter N Robinson
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; The Jackson Laboratory for Genomic Medicine, 10 Discovery Drive, Farmington, CT 06032, USA
| | - Claus-Eric Ott
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Research Group Development and Disease, Max Planck Institute for Molecular Genetics, Berlin, Germany.
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Grünhagen J, Bhushan R, Degenkolbe E, Jäger M, Knaus P, Mundlos S, Robinson PN, Ott CE. MiR-497∼195 cluster microRNAs regulate osteoblast differentiation by targeting BMP signaling. J Bone Miner Res 2015; 30:796-808. [PMID: 25407900 DOI: 10.1002/jbmr.2412] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 11/07/2014] [Accepted: 11/13/2014] [Indexed: 12/27/2022]
Abstract
MicroRNAs play important roles during cell reprogramming and differentiation. In this study, we identified the miR-497∼195 cluster, a member of the miR-15 family, as strongly upregulated with age of postnatal bone development in vivo and late differentiation stages of primary osteoblasts cultured in vitro. Early expression of miR-195-5p inhibits differentiation and mineralization. Microarray analyses along with quantitative PCR demonstrate that miR-195-5p alters the gene regulatory network of osteoblast differentiation and impairs the induction of bone morphogenetic protein (BMP) responsive genes. Applying reporter gene and Western blot assays, we show that miR-195-5p interferes with the BMP/Smad-pathway in a dose-dependent manner. Systematically comparing the changes in mRNA levels in response to miR-195-5p overexpression with the changes observed in the natural course of osteoblast differentiation, we demonstrate that microRNAs of the miR-15 family affect several target genes involved in BMP signaling. Predicted targets including Furin, a protease that cleaves pro-forms, genes encoding receptors such as Acvr2a, Bmp1a, Dies1, and Tgfbr3, molecules within the cascade like Smad5, transcriptional regulators like Ski and Zfp423 as well as Mapk3 and Smurf1 were validated by quantitative PCR. Taken together, our data strongly suggest that miR-497∼195 cluster microRNAs act as intracellular antagonists of BMP signaling in bone cells.
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Affiliation(s)
- Johannes Grünhagen
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, Berlin, Germany; Research Group Development and Disease, Max Planck Institute for Molecular Genetics, Berlin, Germany
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Affiliation(s)
- Johannes Grünhagen
- Institute for Medical Genetics and Human Genetics, Charité - Universitaetsmedizin Berlin, Berlin, Germany
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Schwill S, Seppelt P, Grünhagen J, Ott CE, Jugold M, Ruhparwar A, Robinson PN, Karck M, Kallenbach K. The fibrillin-1 hypomorphic mgR/mgR murine model of Marfan syndrome shows severe elastolysis in all segments of the aorta. J Vasc Surg 2013; 57:1628-36, 1636.e1-3. [DOI: 10.1016/j.jvs.2012.10.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 09/26/2012] [Accepted: 10/01/2012] [Indexed: 10/27/2022]
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Guo G, Ott CE, Grünhagen J, Muñoz-García B, Pletschacher A, Kallenbach K, von Kodolitsch Y, Robinson PN. Indomethacin Prevents the Progression of Thoracic Aortic Aneurysm in Marfan Syndrome Mice. Aorta (Stamford) 2013; 1:5-12. [PMID: 26798667 DOI: 10.12945/j.aorta.2013.13.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Accepted: 03/14/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND Marfan syndrome (MFS), an inherited disorder of connective tissue characterized by abnormalities in the skeletal, ocular, and cardiovascular systems, is caused by mutations in the gene for fibrillin-1 (FBN1). The high mortality in untreated patients is primarily due to aneurysm and dissection of the ascending aorta. The complex pathogenesis of MFS involves changes in transforming growth factor β (TGF-β) signaling, increased matrix metalloproteinase (MMP) expression, and fragmentation of the extracellular matrix. A number of studies have demonstrated increased counts of macrophages and T cells in the ascending aorta of persons or mouse models of MFS, but the efficacy of anti-inflammatory therapy in mouse models of MFS has not yet been assessed. METHODS FBN1 underexpressing mgR/mgR Marfan mice were treated with oral indomethacin. Treatment was begun at the age of three weeks and continued for 8 weeks, following which the aorta of wild type as well as treated and untreated mgR/mgR mice was compared. RESULTS Indomethacin treatment led to a statistically significant reduction of aortic elastin degeneration and macrophage infiltration, as well as a lessening of MMP-2, MMP-9, and MMP-12 upregulation. Additionally, indomethacin decreased both cyclooxygenases 2 (COX-2) expression and activity in the aorta of mgR/mgR mice. COX-2-mediated inflammatory infiltrate contributes to the progression of aortic aneurysm in mgR/mgR mice, providing evidence that COX-2 is a relevant therapeutic target in MFS-associated aortic aneurysmal disease. CONCLUSIONS COX-2 mediated inflammatory infiltration plays an important role in the pathogenesis of aortic aneurysm disease in MFS.
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Affiliation(s)
- Gao Guo
- Institute for Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Claus-Eric Ott
- Institute for Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Johannes Grünhagen
- Institute for Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Begoña Muñoz-García
- Institute for Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Angelika Pletschacher
- Institute for Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Klaus Kallenbach
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Yskert von Kodolitsch
- Centre of Cardiology and Cardiovascular Surgery, Department of Cardiology/Angiology, University Hospital, Hamburg-Eppendorf, Hamburg, Germany
| | - Peter N Robinson
- Institute for Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany; ; Max-Planck-Institute for Molecular Genetics, Berlin, Germany; ; Berlin Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, Berlin, Germany
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Keupp K, Beleggia F, Kayserili H, Barnes A, Steiner M, Semler O, Fischer B, Yigit G, Janda C, Becker J, Breer S, Altunoglu U, Grünhagen J, Krawitz P, Hecht J, Schinke T, Makareeva E, Lausch E, Cankaya T, Caparrós-Martín J, Lapunzina P, Temtamy S, Aglan M, Zabel B, Eysel P, Koerber F, Leikin S, Garcia K, Netzer C, Schönau E, Ruiz-Perez V, Mundlos S, Amling M, Kornak U, Marini J, Wollnik B. Mutations in WNT1 cause different forms of bone fragility. Am J Hum Genet 2013; 92:565-74. [PMID: 23499309 PMCID: PMC3617378 DOI: 10.1016/j.ajhg.2013.02.010] [Citation(s) in RCA: 202] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 02/25/2013] [Accepted: 02/27/2013] [Indexed: 12/13/2022] Open
Abstract
We report that hypofunctional alleles of WNT1 cause autosomal-recessive osteogenesis imperfecta, a congenital disorder characterized by reduced bone mass and recurrent fractures. In consanguineous families, we identified five homozygous mutations in WNT1: one frameshift mutation, two missense mutations, one splice-site mutation, and one nonsense mutation. In addition, in a family affected by dominantly inherited early-onset osteoporosis, a heterozygous WNT1 missense mutation was identified in affected individuals. Initial functional analysis revealed that altered WNT1 proteins fail to activate canonical LRP5-mediated WNT-regulated β-catenin signaling. Furthermore, osteoblasts cultured in vitro showed enhanced Wnt1 expression with advancing differentiation, indicating a role of WNT1 in osteoblast function and bone development. Our finding that homozygous and heterozygous variants in WNT1 predispose to low-bone-mass phenotypes might advance the development of more effective therapeutic strategies for congenital forms of bone fragility, as well as for common forms of age-related osteoporosis.
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Affiliation(s)
- Katharina Keupp
- Institute of Human Genetics, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Filippo Beleggia
- Institute of Human Genetics, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Hülya Kayserili
- Medical Genetics Department, Istanbul Medical Faculty, Istanbul University, 34093 Istanbul, Turkey
| | - Aileen M. Barnes
- Bone and Extracellular Matrix Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Magdalena Steiner
- Institute of Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Oliver Semler
- Children’s Hospital, University of Cologne, 50931 Cologne, Germany
| | - Björn Fischer
- Institute of Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Gökhan Yigit
- Institute of Human Genetics, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - Claudia Y. Janda
- Department of Molecular and Cellular Physiology and Department of Structural Biology, Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jutta Becker
- Institute of Human Genetics, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Stefan Breer
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Umut Altunoglu
- Medical Genetics Department, Istanbul Medical Faculty, Istanbul University, 34093 Istanbul, Turkey
| | - Johannes Grünhagen
- Institute of Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Peter Krawitz
- Institute of Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Jochen Hecht
- Berlin-Brandenburg Centre for Regenerative Therapies, 13353 Berlin, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Elena Makareeva
- Section on Physical Biochemistry, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ekkehart Lausch
- Division of Genetics, Children’s Hospital, University of Freiburg, 79106 Freiburg, Germany
| | - Tufan Cankaya
- Department of Medical Genetics, Dokuz Eylul University Medical Faculty, 35210 Izmir, Turkey
| | - José A. Caparrós-Martín
- Instituto de Investigaciones Biomédicas, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, 28029 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Pablo Lapunzina
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Instituto de Genética Médica y Molecular, Instituto de Investigación Hospital Universitario La Paz, Universidad Autónoma de Madrid, 28046 Madrid, Spain
| | - Samia Temtamy
- Human Genetics and Genome Research Division, National Research Centre, El-Buhouth Street, Dokki, 12311 Cairo, Egypt
| | - Mona Aglan
- Human Genetics and Genome Research Division, National Research Centre, El-Buhouth Street, Dokki, 12311 Cairo, Egypt
| | - Bernhard Zabel
- Division of Genetics, Children’s Hospital, University of Freiburg, 79106 Freiburg, Germany
| | - Peer Eysel
- Department of Orthopaedic and Trauma Surgery, University of Cologne, 50931 Cologne, Germany
| | | | - Sergey Leikin
- Section on Physical Biochemistry, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - K. Christopher Garcia
- Department of Molecular and Cellular Physiology and Department of Structural Biology, Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Christian Netzer
- Institute of Human Genetics, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Eckhard Schönau
- Children’s Hospital, University of Cologne, 50931 Cologne, Germany
| | - Victor L. Ruiz-Perez
- Instituto de Investigaciones Biomédicas, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, 28029 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Stefan Mundlos
- Institute of Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
- Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Uwe Kornak
- Institute of Medical Genetics and Human Genetics, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
- Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany
| | - Joan Marini
- Bone and Extracellular Matrix Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Bernd Wollnik
- Institute of Human Genetics, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, 50931 Cologne, Germany
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Bhushan R, Grünhagen J, Becker J, Robinson PN, Ott CE, Knaus P. miR-181a promotes osteoblastic differentiation through repression of TGF-β signaling molecules. Int J Biochem Cell Biol 2012; 45:696-705. [PMID: 23262291 DOI: 10.1016/j.biocel.2012.12.008] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 12/03/2012] [Accepted: 12/07/2012] [Indexed: 12/20/2022]
Abstract
Osteoblastic differentiation is controlled by complex interplay of several signaling pathways and associated key transcription factors, as well as by microRNAs (miRNAs). In our current study, we found miR-181a to be highly upregulated during BMP induced osteoblastic differentiation of C2C12 and MC3T3 cells. Overexpression of miR-181a led to upregulation of key markers of osteoblastic differentiation as well as enhanced ALP levels and Alizarin red staining, indicating the importance of this miRNA for osteoblastic differentiation. Further, we show that miR-181 isoforms (181a, 181b, 181c) are expressed during different stages of mouse calvarial and tibial development, implying their role in both endochondral and intramembranous ossification. We found several direct and indirect targets of miR-181a to be downregulated by global mRNA expression profiling. Our results demonstrate that miR-181a promotes osteoblastic differentiation via repression of TGF-β signaling molecules by targeting the negative regulator of osteoblastic differentiation Tgfbi (Tgf-beta induced) and TβR-I/Alk5 (TGF-β type I receptor). Furthermore, our findings suggest that Rgs4 and Gata6 are direct targets of miR-181a. Taken together, we provide evidence for a crucial functional link between a specific miRNA, miR-181a and osteoblastic differentiation.
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Affiliation(s)
- Raghu Bhushan
- Institute for Chemistry and Biochemistry, Freie Universitaet Berlin, Berlin, Germany
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Abstract
Severe allergic reactions are reported to the anaphylaxis registry in German-speaking countries. The data provides knowledge regarding the diagnosis and management of patients suffering from anaphylaxis. The ranking of the most frequent elicitors inducing anaphylaxis is age-dependent and also influenced by the group which is reporting the data. The list of food allergens inducing anaphylaxis also varies with age. In children and adolescents peanuts are common elicitors of food-dependent anaphylaxis: in adults wheat is the most frequent cause. Furthermore, the data from the anaphylaxis registry provides information about rare triggers, as well as alerting us to those causative agents which are increasing in frequency. The relevance of augmentation factors is most likely age-dependent, whereas co-morbidities including atopic diseases like atopic dermatitis and allergic asthma occur frequently in children suffering from food-dependent anaphylaxis. The present manuscript provides data on food allergens such as peas and cauliflower, which have been reported as rare causes of anaphylaxis.
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Affiliation(s)
- S Dölle
- Allergie-Centrum-Charité, Klinik für Dermatologie, Venerologie und Allergologie, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland
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Ott CE, Hein H, Lohan S, Hoogeboom J, Foulds N, Grünhagen J, Stricker S, Villavicencio-Lorini P, Klopocki E, Mundlos S. Microduplications upstream ofMSX2are associated with a phenocopy of cleidocranial dysplasia. J Med Genet 2012; 49:437-41. [DOI: 10.1136/jmedgenet-2012-100825] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Jäger M, Ott CE, Grünhagen J, Hecht J, Schell H, Mundlos S, Duda GN, Robinson PN, Lienau J. Composite transcriptome assembly of RNA-seq data in a sheep model for delayed bone healing. BMC Genomics 2011; 12:158. [PMID: 21435219 PMCID: PMC3074554 DOI: 10.1186/1471-2164-12-158] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Accepted: 03/24/2011] [Indexed: 11/28/2022] Open
Abstract
Background The sheep is an important model organism for many types of medically relevant research, but molecular genetic experiments in the sheep have been limited by the lack of knowledge about ovine gene sequences. Results Prior to our study, mRNA sequences for only 1,556 partial or complete ovine genes were publicly available. Therefore, we developed a composite de novo transcriptome assembly method for next-generation sequence data to combine known ovine mRNA and EST sequences, mRNA sequences from mouse and cow, and sequences assembled de novo from short read RNA-Seq data into a composite reference transcriptome, and identified transcripts from over 12 thousand previously undescribed ovine genes. Gene expression analysis based on these data revealed substantially different expression profiles in standard versus delayed bone healing in an ovine tibial osteotomy model. Hundreds of transcripts were differentially expressed between standard and delayed healing and between the time points of the standard and delayed healing groups. We used the sheep sequences to design quantitative RT-PCR assays with which we validated the differential expression of 26 genes that had been identified by RNA-seq analysis. A number of clusters of characteristic expression profiles could be identified, some of which showed striking differences between the standard and delayed healing groups. Gene Ontology (GO) analysis showed that the differentially expressed genes were enriched in terms including extracellular matrix, cartilage development, contractile fiber, and chemokine activity. Conclusions Our results provide a first atlas of gene expression profiles and differentially expressed genes in standard and delayed bone healing in a large-animal model and provide a number of clues as to the shifts in gene expression that underlie delayed bone healing. In the course of our study, we identified transcripts of 13,987 ovine genes, including 12,431 genes for which no sequence information was previously available. This information will provide a basis for future molecular research involving the sheep as a model organism.
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Affiliation(s)
- Marten Jäger
- Institute for Medical Genetics, Charité-Universitätsmedizin Berlin, Augustenburgerplatz 1, 13353 Berlin, Germany
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Ott CE, Grünhagen J, Jäger M, Horbelt D, Schwill S, Kallenbach K, Guo G, Manke T, Knaus P, Mundlos S, Robinson PN. MicroRNAs differentially expressed in postnatal aortic development downregulate elastin via 3' UTR and coding-sequence binding sites. PLoS One 2011; 6:e16250. [PMID: 21305018 PMCID: PMC3031556 DOI: 10.1371/journal.pone.0016250] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Accepted: 12/11/2010] [Indexed: 01/06/2023] Open
Abstract
Elastin production is characteristically turned off during the maturation of elastin-rich organs such as the aorta. MicroRNAs (miRNAs) are small regulatory RNAs that down-regulate target mRNAs by binding to miRNA regulatory elements (MREs) typically located in the 3′ UTR. Here we show a striking up-regulation of miR-29 and miR-15 family miRNAs during murine aortic development with commensurate down-regulation of targets including elastin and other extracellular matrix (ECM) genes. There were a total of 14 MREs for miR-29 in the coding sequences (CDS) and 3′ UTR of elastin, which was highly significant, and up to 22 miR-29 MREs were found in the CDS of multiple ECM genes including several collagens. This overrepresentation was conserved throughout mammalian evolution. Luciferase reporter assays showed synergistic effects of miR-29 and miR-15 family miRNAs on 3′ UTR and coding-sequence elastin constructs. Our results demonstrate that multiple miR-29 and miR-15 family MREs are characteristic for some ECM genes and suggest that miR-29 and miR-15 family miRNAs are involved in the down-regulation of elastin in the adult aorta.
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Affiliation(s)
- Claus Eric Ott
- Institute for Medical Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Johannes Grünhagen
- Institute for Medical Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Marten Jäger
- Institute for Medical Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Daniel Horbelt
- Institute for Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Simon Schwill
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Klaus Kallenbach
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Gao Guo
- Institute for Medical Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Thomas Manke
- Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Petra Knaus
- Institute for Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Stefan Mundlos
- Institute for Medical Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, Berlin, Germany
- Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Peter N. Robinson
- Institute for Medical Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité-Universitätsmedizin Berlin, Berlin, Germany
- Max Planck Institute for Molecular Genetics, Berlin, Germany
- * E-mail:
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Krawitz PM, Schweiger MR, Rödelsperger C, Marcelis C, Kölsch U, Meisel C, Stephani F, Kinoshita T, Murakami Y, Bauer S, Isau M, Fischer A, Dahl A, Kerick M, Hecht J, Köhler S, Jäger M, Grünhagen J, de Condor BJ, Doelken S, Brunner HG, Meinecke P, Passarge E, Thompson MD, Cole DE, Horn D, Roscioli T, Mundlos S, Robinson PN. Identity-by-descent filtering of exome sequence data identifies PIGV mutations in hyperphosphatasia mental retardation syndrome. Nat Genet 2010; 42:827-9. [DOI: 10.1038/ng.653] [Citation(s) in RCA: 250] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 08/03/2010] [Indexed: 11/09/2022]
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Peter D, Grünhagen J, Wenke R, Schäfer FKW, Schreer I. False-negative results after stereotactically guided vacuum biopsy. Eur Radiol 2007; 18:177-82. [PMID: 17637996 DOI: 10.1007/s00330-007-0707-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2006] [Revised: 05/04/2007] [Accepted: 06/04/2007] [Indexed: 10/23/2022]
Abstract
The purpose of this study was to determine the false negative rate of stereotactically guided vacuum biopsy (VB). Data of patients with benign lesions in VB were evaluated retrospectively during a median follow-up period of 21 months. A total of 404 VB were considered benign and representative and were recommended for follow-up. Of these 404 lesions, 195 were completely removed radiologically. Follow-up data were available for 354/404 patients (87.6%), with intervals ranging from 3 to 66 months (median 21, mean 22.4). Reintervention or surgery was necessary in 13/354 (3.7%) cases. Of these cases, 5/354 (1.4%) turned out to be false negatives. Four of these cases showed large areas of microcalcifications or several clusters, and only partial removal was possible due to the size of the lesions. Although VB is an accurate procedure for diagnosing nonpalpable breast lesions with a low cancer miss rate, we consider the exclusion of malignancy in cases of disseminated microcalcifications or several clusters as a limitation. The radiologic-pathologic correlation in these cases is a challenge, particularly in terms of the residuals. Strict follow-up of benign lesions is essential to avoid delayed cancer diagnosis.
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Affiliation(s)
- D Peter
- Breast Center, Department of Radiology, University Schleswig-Holstein, Campus Kiel, Michaelisstr. 16, 24105 Kiel, Germany.
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Grünhagen J, Egbers HJ, Heller M, Reuter M. [Comparison of spine injuries by means of CT and MRI according to the classification of Magerl]. ROFO-FORTSCHR RONTG 2005; 177:828-34. [PMID: 15902632 DOI: 10.1055/s-2005-858198] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE A feasibility study of the classification of spine injuries by CT and MRI data according to the classification of Magerl for spine injuries. MATERIAL AND METHODS In 39 patients, 46 injured vertebrae were evaluated by means of CT and MRI. A single-slice helical CT (Somatom Plus S, Siemens, Erlangen, Germany) was used with a collimation and feed of 2 mm and 3 mm, respectively. Sagittal reformations were reconstructed from these data sets. MR imaging was performed with 1.5T and 1.0T machines (Magnetom Vision and Magnetom Impact, Siemens). Transverse and sagittal T1-w SE- images as well as sagittal T2-w TSE- and STIR-images were generated. Each fractured vertebra was independently categorized two times according to the classification of Magerl on the basis of CT- and MRI-images. The CT- and MRI-classifications were subsequently compared. RESULTS Most fractures were classified as impaction fractures (A1) or burst fractures (A3). Only 5/46 injuries of vertebrae were not given the same classification by means of CT and MRI (r = 0.9). MRI showed more bony lesions than CT (n. s., p > 0.05) and was able to evaluate ruptures of the longitudinal ligaments in 5 patients. CONCLUSION Classification of spine injuries according to the Magerl-classification showed a significant agreement between CT and MRI and therefore a comparable evaluation of stability. MRI was superior in delineating ligamental lesions.
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Affiliation(s)
- J Grünhagen
- Klinik für Diagnostische Radiologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel
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