Autosomal recessive lissencephaly with cerebellar hypoplasia is associated with human RELN mutations.
Identifieur interne : 00A280 ( Main/Exploration ); précédent : 00A279; suivant : 00A281Autosomal recessive lissencephaly with cerebellar hypoplasia is associated with human RELN mutations.
Auteurs : S E Hong [États-Unis] ; Y Y Shugart ; D T Huang ; S A Shahwan ; P E Grant ; J O Hourihane ; N D Martin ; C A WalshSource :
- Nature genetics [ 1061-4036 ] ; 2000.
Descripteurs français
- KwdFr :
- ADN complémentaire (métabolisme), Animaux, Cartographie chromosomique, Cervelet (anatomopathologie), Cervelet (malformations), Chromosomes humains de la paire 7, Cortex cérébral (anatomopathologie), Cortex cérébral (malformations), Femelle, Gènes récessifs (génétique), Hippocampe (anatomopathologie), Hippocampe (malformations), Humains, Imagerie par résonance magnétique, Liaison génétique, Lod score, Modèles génétiques, Molécules d'adhérence cellulaire neuronale (génétique), Molécules d'adhérence cellulaire neuronale (métabolisme), Molécules d'adhérence cellulaire neuronale (sang), Mutation, Mutation avec décalage du cadre de lecture, Mâle, Pedigree, Phénotype, Protéines de la matrice extracellulaire (génétique), Protéines de la matrice extracellulaire (métabolisme), Protéines de la matrice extracellulaire (sang), Protéines de tissu nerveux, RT-PCR, Répétitions microsatellites, Santé de la famille, Serine endopeptidases, Souris, Technique de Western, Tronc cérébral (anatomopathologie), Tronc cérébral (malformations), Épissage des ARN.
- MESH :
- anatomopathologie : Cervelet, Cortex cérébral, Hippocampe, Tronc cérébral.
- génétique : Gènes récessifs, Molécules d'adhérence cellulaire neuronale, Protéines de la matrice extracellulaire.
- malformations : Cervelet, Cortex cérébral, Hippocampe, Tronc cérébral.
- métabolisme : ADN complémentaire, Molécules d'adhérence cellulaire neuronale, Protéines de la matrice extracellulaire.
- sang : Molécules d'adhérence cellulaire neuronale, Protéines de la matrice extracellulaire.
- Animaux, Cartographie chromosomique, Chromosomes humains de la paire 7, Femelle, Humains, Imagerie par résonance magnétique, Liaison génétique, Lod score, Modèles génétiques, Mutation, Mutation avec décalage du cadre de lecture, Mâle, Pedigree, Phénotype, Protéines de tissu nerveux, RT-PCR, Répétitions microsatellites, Santé de la famille, Serine endopeptidases, Souris, Technique de Western, Épissage des ARN.
English descriptors
- KwdEn :
- Animals, Blotting, Western, Brain Stem (abnormalities), Brain Stem (pathology), Cell Adhesion Molecules, Neuronal (blood), Cell Adhesion Molecules, Neuronal (genetics), Cell Adhesion Molecules, Neuronal (metabolism), Cerebellum (abnormalities), Cerebellum (pathology), Cerebral Cortex (abnormalities), Cerebral Cortex (pathology), Chromosome Mapping, Chromosomes, Human, Pair 7, DNA, Complementary (metabolism), Extracellular Matrix Proteins (blood), Extracellular Matrix Proteins (genetics), Extracellular Matrix Proteins (metabolism), Family Health, Female, Frameshift Mutation, Genes, Recessive (genetics), Genetic Linkage, Hippocampus (abnormalities), Hippocampus (pathology), Humans, Lod Score, Magnetic Resonance Imaging, Male, Mice, Microsatellite Repeats, Models, Genetic, Mutation, Nerve Tissue Proteins, Pedigree, Phenotype, RNA Splicing, Reverse Transcriptase Polymerase Chain Reaction, Serine Endopeptidases.
- MESH :
- chemical , blood : Cell Adhesion Molecules, Neuronal, Extracellular Matrix Proteins.
- abnormalities : Brain Stem, Cerebellum, Cerebral Cortex, Hippocampus.
- chemical , genetics : Cell Adhesion Molecules, Neuronal, Extracellular Matrix Proteins, Genes, Recessive.
- chemical , metabolism : Cell Adhesion Molecules, Neuronal, DNA, Complementary, Extracellular Matrix Proteins.
- pathology : Brain Stem, Cerebellum, Cerebral Cortex, Hippocampus.
- Animals, Blotting, Western, Chromosome Mapping, Chromosomes, Human, Pair 7, Family Health, Female, Frameshift Mutation, Genetic Linkage, Humans, Lod Score, Magnetic Resonance Imaging, Male, Mice, Microsatellite Repeats, Models, Genetic, Mutation, Nerve Tissue Proteins, Pedigree, Phenotype, RNA Splicing, Reverse Transcriptase Polymerase Chain Reaction, Serine Endopeptidases.
Abstract
Normal development of the cerebral cortex requires long-range migration of cortical neurons from proliferative regions deep in the brain. Lissencephaly ("smooth brain," from "lissos," meaning smooth, and "encephalos," meaning brain) is a severe developmental disorder in which neuronal migration is impaired, leading to a thickened cerebral cortex whose normally folded contour is simplified and smooth. Two identified lissencephaly genes do not account for all known cases, and additional lissencephaly syndromes have been described. An autosomal recessive form of lissencephaly (LCH) associated with severe abnormalities of the cerebellum, hippocampus and brainstem maps to chromosome 7q22, and is associated with two independent mutations in the human gene encoding reelin (RELN). The mutations disrupt splicing of RELN cDNA, resulting in low or undetectable amounts of reelin protein. LCH parallels the reeler mouse mutant (Reln(rl)), in which Reln mutations cause cerebellar hypoplasia, abnormal cerebral cortical neuronal migration and abnormal axonal connectivity. RELN encodes a large (388 kD) secreted protein that acts on migrating cortical neurons by binding to the very low density lipoprotein receptor (VLDLR), the apolipoprotein E receptor 2 (ApoER2; refs 9-11 ), alpha3beta1 integrin and protocadherins. Although reelin was previously thought to function exclusively in brain, some humans with RELN mutations show abnormal neuromuscular connectivity and congenital lymphoedema, suggesting previously unsuspected functions for reelin in and outside of the brain.
DOI: 10.1038/79246
PubMed: 10973257
Affiliations:
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Le document en format XML
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<term>Chromosomes humains de la paire 7</term>
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<front><div type="abstract" xml:lang="en">Normal development of the cerebral cortex requires long-range migration of cortical neurons from proliferative regions deep in the brain. Lissencephaly ("smooth brain," from "lissos," meaning smooth, and "encephalos," meaning brain) is a severe developmental disorder in which neuronal migration is impaired, leading to a thickened cerebral cortex whose normally folded contour is simplified and smooth. Two identified lissencephaly genes do not account for all known cases, and additional lissencephaly syndromes have been described. An autosomal recessive form of lissencephaly (LCH) associated with severe abnormalities of the cerebellum, hippocampus and brainstem maps to chromosome 7q22, and is associated with two independent mutations in the human gene encoding reelin (RELN). The mutations disrupt splicing of RELN cDNA, resulting in low or undetectable amounts of reelin protein. LCH parallels the reeler mouse mutant (Reln(rl)), in which Reln mutations cause cerebellar hypoplasia, abnormal cerebral cortical neuronal migration and abnormal axonal connectivity. RELN encodes a large (388 kD) secreted protein that acts on migrating cortical neurons by binding to the very low density lipoprotein receptor (VLDLR), the apolipoprotein E receptor 2 (ApoER2; refs 9-11 ), alpha3beta1 integrin and protocadherins. Although reelin was previously thought to function exclusively in brain, some humans with RELN mutations show abnormal neuromuscular connectivity and congenital lymphoedema, suggesting previously unsuspected functions for reelin in and outside of the brain.</div>
</front>
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<name sortKey="Huang, D T" sort="Huang, D T" uniqKey="Huang D" first="D T" last="Huang">D T Huang</name>
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