Dominant-negative ALK2 allele associates with congenital heart defects
| Autor: | Joeroen Bakkers, Barbara J.M. Mulder, Kelly A. Smith, Manon C. Verhoeven, Pieter A. Doevendans, Victor Guryev, Holger Rehmann, Irene C. Joziasse, Peter ten Dijke, Edwin Cuppen, Sonja Chocron, Jasper J. van der Smagt, Maarten van Dinther |
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| Přispěvatelé: | Stem Cell Aging Leukemia and Lymphoma (SALL), Groningen Research Institute for Asthma and COPD (GRIAC), ACS - Amsterdam Cardiovascular Sciences, Cardiology, Hubrecht Institute for Developmental Biology and Stem Cell Research |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Male
Activin Receptors Type I Mutation Missense Biology medicine.disease_cause Polymorphism Single Nucleotide Cercopithecus aethiops Physiology (medical) Chlorocebus aethiops medicine Missense mutation Animals Humans Bone morphogenetic protein receptor Dominant Allele Polymorphism Zebrafish Alleles Genes Dominant Netherlands Genetics Mutation Heart development Heart Septal Defects Myocardium Heart Single Nucleotide biology.organism_classification Atrioventricular septum Genes Amino Acid Substitution COS Cells Atrioventricular canal Cattle Female Missense Cardiology and Cardiovascular Medicine Activin Receptors Type I |
| Zdroj: | Circulation, 119(24), 3062-9. LIPPINCOTT WILLIAMS & WILKINS Circulation, 119(24), 3062-3069. Lippincott Williams and Wilkins Circulation, 119(24), 3062-3069. Lippincott Williams & Wilkins |
| ISSN: | 0009-7322 |
| Popis: | Background— Serious congenital heart defects occur as a result of improper atrioventricular septum (AVS) development during embryogenesis. Despite extensive knowledge of the genetic control of AVS development, few genetic lesions have been identified that are responsible for AVS-associated congenital heart defects. Methods and Results— We sequenced 32 genes known to be important in AVS development in patients with AVS defects and identified 11 novel coding single-nucleotide polymorphisms that are predicted to impair protein function. We focused on variants identified in the bone morphogenetic protein receptor, ALK2 , and subjected 2 identified variants to functional analysis. The coding single-nucleotide polymorphisms R307L and L343P are heterozygous missense substitutions and were each identified in single individuals. The L343P allele had impaired functional activity as measured by in vitro kinase and bone morphogenetic protein-specific transcriptional response assays and dominant-interfering activity in vivo. In vivo analysis of zebrafish embryos injected with ALK2 L343P RNA revealed improper atrioventricular canal formation. Conclusion— These data identify the dominant-negative allele ALK2 L343P in a patient with AVS defects. |
| Databáze: | OpenAIRE |
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