Abstract:
:We studied a consanguineous Palestinian Arab family segregating an autosomal recessive progressive myoclonus epilepsy (PME) with early ataxia. PME is a rare, often fatal syndrome, initially responsive to antiepileptic drugs which over time becomes refractory and can be associated with cognitive decline. Linkage analysis was performed and the disease locus narrowed to chromosome 19p13.3. Fourteen candidate genes were screened by conventional Sanger sequencing and in one, LMNB2, a novel homozygous missense mutation was identified that segregated with the PME in the family. Whole exome sequencing excluded other likely pathogenic coding variants in the linked interval. The p.His157Tyr mutation is located in an evolutionarily highly conserved region of the alpha-helical rod of the lamin B2 protein. In vitro assembly analysis of mutant lamin B2 protein revealed a distinct defect in the assembly of the highly ordered fibrous arrays typically formed by wild-type lamin B2. Our data suggests that disruption of the organisation of the nuclear lamina in neurons, perhaps through abnormal neuronal migration, causes the epilepsy and early ataxia syndrome and extends the aetiology of PMEs to include dysfunction in nuclear lamin proteins.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Damiano JA,Afawi Z,Bahlo M,Mauermann M,Misk A,Arsov T,Oliver KL,Dahl HH,Shearer AE,Smith RJ,Hall NE,Mahmood K,Leventer RJ,Scheffer IE,Muona M,Lehesjoki AE,Korczyn AD,Herrmann H,Berkovic SF,Hildebrand MSdoi
10.1093/hmg/ddv171subject
Has Abstractpub_date
2015-08-15 00:00:00pages
4483-90issue
16eissn
0964-6906issn
1460-2083pii
ddv171journal_volume
24pub_type
杂志文章abstract::X-linked myotubular myopathy (MTM) is a severe neuromuscular disease of infancy caused by mutations of MTM1, which encodes the phosphoinositide lipid phosphatase, myotubularin. The Mtm1 knockout (KO) mouse has a severe phenotype and its short lifespan (8 weeks) makes it a challenge to use as a model in the testing of ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddr512
更新日期:2012-02-15 00:00:00
abstract::Histamine (HA) acts as a neurotransmitter in the brain, which participates in the regulation of many biological processes including inflammation, gastric acid secretion and neuromodulation. The enzyme histamine N-methyltransferase (HNMT) inactivates HA by transferring a methyl group from S-adenosyl-l-methionine to HA,...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv286
更新日期:2015-10-15 00:00:00
abstract::An improved understanding of the expression of the cystic fibrosis gene (CFTR) will assist our approach to preventing the organ damage caused by cystic fibrosis (CF). We have studied the expression of CFTR in human fetal tissues at different gestational ages using in situ hybridization to detect CFTR mRNA. CFTR was pr...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/2.3.219
更新日期:1993-03-01 00:00:00
abstract::Peroxisome proliferator-activated receptors (PPARs) are ligand-mediated transcription factors, which control both lipid and energy metabolism and inflammation pathways. PPARγ agonists are effective in the treatment of metabolic diseases and, more recently, neurodegenerative diseases, in which they show promising neuro...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/dds355
更新日期:2012-12-01 00:00:00
abstract::Usher syndrome (USH) is a genetically heterogeneous group of autosomal recessive deaf-blinding disorders. Pathophysiology leading to the blinding retinal degeneration in USH is uncertain. There is evidence for involvement of the photoreceptor cilium, photoreceptor synapse, the adjacent retinal pigment epithelium (RPE)...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn140
更新日期:2008-08-01 00:00:00
abstract::Nuclear Factor-kappaB (NF-kappaB) is a major transcription regulator of immune response, apoptosis and cell-growth control genes, and is upregulated in inflammatory bowel disease (IBD), both ulcerative colitis (UC) and Crohn's disease. The NFKB1 gene encodes the NF-kappaB p105/p50 isoforms. Genome-wide screens in IBD ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddh008
更新日期:2004-01-01 00:00:00
abstract::To investigate the putative role of BRCA1, a gene involved in hereditary breast and ovarian cancer, in sporadic ovarian tumors among Japanese women, we examined 76 unselected primary ovarian cancers for mutations in the coding region of BRCA1 using the single-strand conformation polymorphism technique. Although no som...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/4.10.1953
更新日期:1995-10-01 00:00:00
abstract::Colobomatous macrophthalmia with microcornea syndrome (MACOM, Online Mendelian Inheritance in Man (OMIM) 602499) is an autosomal dominantly inherited malformation of the eye, which is characterized by microcornea with increased axial length, coloboma of the iris and of the optic disc, and severe myopia. We performed w...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddu744
更新日期:2015-04-15 00:00:00
abstract::We performed a molecular study with 21 microsatellites on a sample of 82 trisomy 13 conceptuses, the largest number of cases studied to date. The parental origin was determined in every case and in 89% the extra chromosome 13 was of maternal origin with an almost equal number of maternal MI and MII errors. The latter ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddm148
更新日期:2007-08-15 00:00:00
abstract::A candidate gene for X-linked adrenoleukodystrophy (ALD) has been identified via positional cloning strategies. We now report messenger RNA expression in fibroblasts from 6 unrelated ALD patients. Four patients lacked the normal 4.2 kb transcript, three of them having deletions of the ALD gene. A fifth patient with a ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/2.11.1949
更新日期:1993-11-01 00:00:00
abstract::Deficiency of thymidine kinase 2 (TK2) is a frequent cause of isolated myopathy or encephalomyopathy in children with mitochondrial DNA (mtDNA) depletion. To determine the bases of disease onset, organ specificity and severity of TK2 deficiency, we have carefully characterized Tk2 H126N knockin mice (Tk2-/-). Although...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddq453
更新日期:2011-01-01 00:00:00
abstract::Tuberous sclerosis complex (TSC) is a genetic disorder caused by mutations in TSC1 or TSC2 resulting in hyperactivity of the mammalian target of rapamycin and disabling brain lesions. These lesions contain misplaced neurons enriched in hypoxia-inducible factor 1a (HIF1a). However, the relationship between TSC1/2 and H...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddt018
更新日期:2013-05-01 00:00:00
abstract::Retinitis pigmentosa (RP), a genetically heterogeneous group of retinopathies that occur in both non-syndromic and syndromic forms, is caused by mutations in ∼100 genes. Although recent advances in next-generation sequencing have aided in the discovery of novel RP genes, a number of the underlying contributing genes a...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddu291
更新日期:2014-11-01 00:00:00
abstract::Biallelic loss-of-function mutations in the RNA-binding protein EIF4A3 cause Richieri-Costa-Pereira syndrome (RCPS), an autosomal recessive condition mainly characterized by craniofacial and limb malformations. However, the pathogenic cellular mechanisms responsible for this syndrome are entirely unknown. Here, we use...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddx078
更新日期:2017-06-15 00:00:00
abstract::We have used inbred and congenic rat strains in F(2) segregation studies to discover epistasis in a polygenic model of hypertension. Previously, we have found evidence that the presence of a blood pressure quantitative trait locus (QTL) on chromosome 1 is conditional upon the allele status of chromosome 10. To prove t...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg041
更新日期:2003-02-15 00:00:00
abstract::Twist1 is a basic helix-loop-helix transcription factor, essential during early development in mammals. While Twist1 induces epithelial-to-mesenchymal transition (EMT), here we show that Twist1 overexpression enhances nuclear and mitotic aberrations. This is accompanied by an increase in whole chromosomal copy number ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddaa076
更新日期:2020-06-27 00:00:00
abstract::Osteoarthritis (OA) is a common, painful and debilitating disease of articulating joints resulting from the age-associated loss of cartilage. Well-powered genetic studies have identified a number of DNA polymorphisms that are associated with OA susceptibility. Like most complex trait loci, these OA loci are thought to...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv433
更新日期:2015-12-20 00:00:00
abstract::OPA1 mutations are the major cause of dominant optic atrophy (DOA) and the syndromic form DOA plus, pathologies for which there is no established cure. We used a 'drug repurposing' approach to identify FDA-approved molecules able to rescue the mitochondrial dysfunctions induced by OPA1 mutations. We screened two diffe...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddaa244
更新日期:2021-01-21 00:00:00
abstract::Inherited retinal dystrophies are a group of genetically heterogeneous conditions with broad phenotypic heterogeneity. We analyzed a large five-generation pedigree with early-onset recessive retinal degeneration to identify the causative mutation. Linkage analysis and homozygosity mapping combined with exome sequencin...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddw113
更新日期:2016-06-15 00:00:00
abstract::In order to identify genes in the Prader-Willi/Angelman syndrome critical region, radiolabeled cDNA probes from poly(A)+ RNA from mouse tissues were used to identify potential exon-containing genomic DNA fragments in cosmid or phage clones from appropriate yeast artificial chromosomes, and these fragments were subsequ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/3.2.309
更新日期:1994-02-01 00:00:00
abstract::Human GM1-gangliosidosis is caused by a genetic deficiency of lysosomal acid beta-galactosidase (beta-gal). The disease manifests itself either as an infantile, juvenile or adult form and is primarily a neurological disorder with progressive brain dysfunction. A mouse model lacking a functional beta-gal gene has been ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/6.2.205
更新日期:1997-02-01 00:00:00
abstract::Serum total immunoglobulin E (IgE) is a critical intermediate phenotype of allergic diseases. Although total IgE exhibits sexual dimorphism in humans (with males demonstrating higher IgE than females), the molecular basis of this difference is unknown. A genome-wide scan of 380 short-tandem repeat (STR) markers was pe...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl447
更新日期:2007-02-01 00:00:00
abstract::The maintenance of mitochondrial DNA (mtDNA) is critically dependent upon polymerase-gamma (pol-gamma), encoded by the nuclear gene POLG. Over the last 5 years, it has become clear that mutations of POLG are a major cause of human disease. Secondary mtDNA defects characterize these disorders, with mtDNA depletion, mul...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddl233
更新日期:2006-10-15 00:00:00
abstract::Friedreich ataxia is commonly caused by large expansions of a GAA triplet-repeat (GAA-TR) sequence in the first intron of the FRDA gene. We used small-pool PCR to analyze somatic variability among 7190 individual FRDA molecules from peripheral blood DNA of subjects carrying 12 different expanded alleles, ranging in si...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/11.18.2175
更新日期:2002-09-01 00:00:00
abstract::DNA methylation (DNAm) has been linked to changes in chromatin structure, gene expression and disease. The DNAm level can be affected by genetic variation; although, how this differs by CpG dinucleotide density and genic location of the DNAm site is not well understood. Moreover, the effect of disease causing variants...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddw072
更新日期:2016-06-15 00:00:00
abstract::Mitochondrial dysfunction plays an important role in the etiology of neurodegenerative diseases. However, the progressive nature of neuronal loss in genetic models of mitochondrial dysfunction suggests the presence of compensatory mechanisms promoting neuronal survival under these conditions. Here, we identified the e...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/dds500
更新日期:2013-03-01 00:00:00
abstract::The DNA mismatch repair genes MSH2 and MLH1 have been shown to account for a major share of hereditary non-polyposis colorectal cancer (HNPCC). We searched for germline mutations in these genes in 35 HNPCC kindreds fulfilling the Amsterdam diagnostic criteria and in a further 20 kindreds with an average of four affect...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/5.6.763
更新日期:1996-06-01 00:00:00
abstract::Human homologues of mouse cancer modifier genes may play a role in cancer risk and prognosis. A proportion of the familial risk of common cancers may be attributable to variants in such genes, each contributing to a small effect. The protein tyrosine phosphatase receptor type J (PTPRJ) has been recently identified as ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddi237
更新日期:2005-08-15 00:00:00
abstract::Ciliary trafficking defects underlie the pathogenesis of severe human ciliopathies, including Joubert Syndrome (JBTS), Bardet-Biedl Syndrome, and some forms of retinitis pigmentosa (RP). Mutations in the ciliary protein RPGR (retinitis pigmentosa GTPase regulator) are common causes of RP-associated photoreceptor degen...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddw281
更新日期:2016-10-15 00:00:00
abstract::We have constructed a long-range restriction map of the region on chromosome 4q that contains the gene for facioscapulohumeral muscular dystrophy (FSHD). This region contains the linkage group cen ... D4S163-D4S139-D4F35S1-D4F104S1-FSHD ... 4qter, which spans a genetic distance of about 5 cM. Pulse field gel electroph...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/2.10.1667
更新日期:1993-10-01 00:00:00