Abstract:
:Spastic paraplegia 35 (SPG35) (OMIM: 612319) or fatty acid hydroxylase-associated neurodegeneration (FAHN) is caused by deficiency of fatty acid 2-hydroxylase (FA2H). This enzyme synthesizes sphingolipids containing 2-hydroxylated fatty acids, which are particularly abundant in myelin. Fa2h-deficient (Fa2h-/-) mice develop symptoms reminiscent of the human disease and therefore serve as animal model of SPG35. In order to understand further the pathogenesis of SPG35, we compared the proteome of purified CNS myelin isolated from wild type and Fa2h-/- mice at different time points of disease progression using tandem mass tag labeling. Data analysis with a focus on myelin membrane proteins revealed a significant increase of the oligodendrocytic myelin paranodal and inner loop protein (Opalin) in Fa2h-/- mice, whereas the concentration of other major myelin proteins was not significantly changed. Western blot analysis revealed an almost 6-fold increase of Opalin in myelin of Fa2h-/- mice aged 21-23 months. A concurrent unaltered Opalin gene expression suggested a decreased turnover of the Opalin protein in Fa2h-/- mice. Supporting this hypothesis, Opalin protein half-life was reduced significantly when expressed in CHO cells synthesizing 2-hydroxylated sulfatide, compared to cells synthesizing only non-hydroxylated sulfatide. Degradation of Opalin was inhibited by inhibitors of lysosomal degradation but unaffected by proteasome inhibitors. Taken together, these results reveal a new function of 2-hydroxylated sphingolipids namely affecting the turnover of a myelin membrane protein. This may play a role in the pathogenesis of SPG35.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Hardt R,Jordans S,Winter D,Gieselmann V,Wang-Eckhardt L,Eckhardt Mdoi
10.1093/hmg/ddaa246subject
Has Abstractpub_date
2021-01-21 00:00:00pages
3616-3630issue
22eissn
0964-6906issn
1460-2083pii
5994970journal_volume
29pub_type
杂志文章abstract::Chromosomal common fragile sites (CFSs) are genetically unstable regions of the genome that are induced by conditions that impair DNA replication. In this report, we show that treatment with the DNA polymerase inhibitor, aphidicolin (APH), slows the replication rate throughout S phase. To investigate the unusual sensi...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddp470
更新日期:2010-01-01 00:00:00
abstract::The Taiwan Biobank (TWB) aims to build a nationwide research database that integrates genomic/epigenomic profiles, lifestyle patterns, dietary habits, environmental exposure history and long-term health outcomes of 300,000 residents of Taiwan. We describe here an investigation of the population structure of Han Chines...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddw346
更新日期:2016-12-15 00:00:00
abstract::The tumour suppressor gene PTEN, localized to 10q23.3, is the susceptibility gene for Cowden syndrome (CS) and Bannayan-Riley-Ruvalcaba (BRR) syndrome, two hamartoma syndromes with an increased risk of breast and thyroid tumours. Somatic mutations have been found in a variety of human tumours. Functional studies have ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/9.11.1633
更新日期:2000-07-01 00:00:00
abstract::A recurrent t(9;22) (q22;q12) chromosome translocation has been described in extraskeletal myxoid chondrosarcoma (EMC). Fluorescent in situ hybridization experiments performed on one EMC tumour indicated that the chromosome 22 breakpoint occurred in the EWS gene. Northern blot analysis revealed an aberrant EWS transcr...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/4.12.2219
更新日期:1995-12-01 00:00:00
abstract::An association between the 19q13.2 chromosomal region and Alzheimer's disease (AD) has been reported in AD families and for sporadic AD. Recent observations provide evidence that the epsilon 4 allele of the apolipoprotein E gene (APOE), located in this region, is a risk factor for late-onset AD. Within this region, ot...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/3.4.569
更新日期:1994-04-01 00:00:00
abstract::Huntingtin interacting protein 14 (HIP14, ZDHHC17) is a huntingtin (HTT) interacting protein with palmitoyl transferase activity. In order to interrogate the function of Hip14, we generated mice with disruption in their Hip14 gene. Hip14-/- mice displayed behavioral, biochemical and neuropathological defects that are ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddr308
更新日期:2011-10-15 00:00:00
abstract::Duchenne muscular dystrophy (DMD) is a lethal muscle wasting disorder caused by mutations in the DMD gene that leads to the absence or severe reduction of dystrophin protein in muscle. The mdx mouse, also dystrophin deficient, is the model most widely used to study the pathology and test potential therapies, but the p...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddz266
更新日期:2020-02-01 00:00:00
abstract::Amyotrophic lateral sclerosis (ALS) is a progressive, fatal, neurodegenerative disease characterized by the loss of motor neurons. Motor neuron degeneration is probably both a cell autonomous and a non-autonomous event. Therefore, manipulating the diseased microenvironment via non-neural cell replacement could be a th...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddq293
更新日期:2010-10-01 00:00:00
abstract::An intronic GGGGCC (G4C2) hexanucleotide repeat expansion inC9orf72 is the most common genetic cause of amyotrophic lateral sclerosis and frontotemporal dementia (C9ALS/FTD). Repeat-associated non-AUG (RAN) translation of G4C2 RNA can result in five different dipeptide repeat proteins (DPR: poly GA, poly GP, poly GR, ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddx350
更新日期:2017-12-15 00:00:00
abstract::Spliceosomal Uridine-rich small ribonucleo protein (U snRNP) assembly is an active process mediated by the macromolecular survival motor neuron (SMN) complex. This complex contains the SMN protein and six additional proteins, named Gemin2-7, according to their localization to nuclear structures termed gems. Here, we p...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddi343
更新日期:2005-10-15 00:00:00
abstract::Peroxisome biogenesis disorders, including Zellweger syndrome (ZS), neonatal adrenoleukodystrophy (NALD) and infantile Refsum disease, are lethal hereditary diseases caused by abnormalities in peroxisomal assembly. To date, 12 genotypes have been identified. We now have evidence that the complete human cDNA encoding P...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/8.6.1077
更新日期:1999-06-01 00:00:00
abstract::Xq28 has been of special interest in human genetics because a large number of diseases map to this region. As a step in the molecular analysis of the as yet uncloned disease genes, and as a test for the detailed analysis of larger regions of the genome, we have constructed YAC clone contigs covering the 7.5 Mb region ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/3.12.2137
更新日期:1994-12-01 00:00:00
abstract::An increased rate of de novo copy number variants (CNVs) has been found in schizophrenia (SZ), autism and developmental delay. An increased rate has also been reported in bipolar affective disorder (BD). Here, in a larger BD sample, we aimed to replicate these findings and compare de novo CNVs between SZ and BD. We us...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddu379
更新日期:2014-12-15 00:00:00
abstract::LKB1 is a serine/threonine kinase which is inactivated by mutation in the Peutz-Jeghers polyposis and cancer predisposition syndrome (PJS). We have identified a novel leucine-rich repeat containing protein, LIP1, that interacts with LKB1. The LIP1 gene consists of 25 exons, maps to human chromosome 2q36 and encodes a ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/10.25.2869
更新日期:2001-12-01 00:00:00
abstract::The rate-limiting step of dietary calcium absorption in the intestine requires the brush border calcium entry channel TRPV6. The TRPV6 gene was completely sequenced in 170 renal calcium stone patients. The frequency of an ancestral TRPV6 haplotype consisting of three non-synonymous polymorphisms (C157R, M378V, M681T) ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn048
更新日期:2008-06-01 00:00:00
abstract::Nineteen Wnt ligands and 10 Frizzled (Fz) receptors mediate multiple distinct cellular events during neuronal development. However, their precise roles in cell-type specification and organogenesis are poorly delineated because of overlapping functions and expression profiles. Here, we have explored the role of two clo...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddr616
更新日期:2012-04-15 00:00:00
abstract::Primary open-angle glaucoma (POAG) is a genetically complex neuropathy that affects retinal ganglion cells and is a leading cause of blindness worldwide. WDR36, a gene of unknown function, was recently identified as causative for POAG at locus GLC1G. Subsequent studies found disease-associated variants in control popu...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn147
更新日期:2008-08-15 00:00:00
abstract::Rheumatoid arthritis (RA) is the commonest chronic, systemic, inflammatory disorder affecting ∼1% of the world population. It has a strong genetic component and a growing number of associated genes have been discovered in genome-wide association studies (GWAS), which nevertheless only account for 23% of the total gene...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddr248
更新日期:2011-09-01 00:00:00
abstract::The fragile X syndrome is characterized at the molecular level by expansion and methylation of a CGG trinucleotide repeat located within the FMR1 locus. The tissues of most full mutation carriers are mosaic for repeat size, but these mutational patterns tend to be well conserved when comparing multiple tissues within ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/8.12.2293
更新日期:1999-11-01 00:00:00
abstract::Mutations in SOX18, VEGFC and Vascular Endothelial Growth Factor 3 underlie the hereditary lymphatic disorders hypotrichosis-lymphedema-telangiectasia (HLT), Milroy-like lymphedema and Milroy disease, respectively. Genes responsible for hereditary lymphedema are key regulators of lymphatic vascular development in the ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddt518
更新日期:2014-03-01 00:00:00
abstract::Primary open-angle glaucoma (POAG) is a complex disease with unknown causes. However, in the past decade, POAG has been linked to six chromosomal regions, of which the gene MYOC encoding myocilin and the gene OPTN encoding optineurin have been identified to harbor causal mutations (disease-causing variants, DCV). POAG...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddh074
更新日期:2004-04-01 00:00:00
abstract::Mutations in the paired-domain transcription factor PAX9 are associated with non-syndromic tooth agenesis that preferentially affects posterior dentition. Of the 18 mutations identified to date, eight are phenotypically well-characterized missense mutations within the DNA-binding paired domain. We determined the struc...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddp221
更新日期:2009-08-01 00:00:00
abstract::Mandibuloacral dysplasia (MAD; OMIM 248370) is a rare, genetically and phenotypically heterogeneous, autosomal recessive disorder characterized by skeletal abnormalities including hypoplasia of the mandible and clavicles, acro-osteolysis, cutaneous atrophy and lipodystrophy. A homozygous missense mutation, Arg527His, ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg213
更新日期:2003-08-15 00:00:00
abstract::Aberrant tau protein accumulation drives neurofibrillary tangle (NFT) formation in several neurodegenerative diseases. Currently, efforts to elucidate pathogenic mechanisms and assess the efficacy of therapeutic targets are limited by constraints of existing models of tauopathy. In order to generate a more versatile m...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv336
更新日期:2015-11-01 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::Selective loss of dopaminergic neurons is the final common pathway in Parkinson's disease. Expression of Parkin associated endothelin-receptor like receptor (Pael-R) in mouse brain was achieved by injecting adenoviral vectors carrying a modified neuron-specific promoter and Cre recombinase into the striatum. Upregulat...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl439
更新日期:2007-01-01 00:00:00
abstract::The EPM2A gene, encoding the dual-phosphatase laforin, is mutated in a fatal form of progressive myoclonus epilepsy known as Lafora disease (LD). The EPM2A gene, by differential splicing of its transcripts, is known to encode two laforin isoforms having distinct carboxyl termini; a major isoform localized in the cytop...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn199
更新日期:2008-10-01 00:00:00
abstract::Two common inflammatory skin disorders with impaired barrier, atopic dermatitis (AD) and psoriasis, share distinct genetic linkage to the Epidermal Differentiation Complex (EDC) locus on 1q21. The EDC is comprised of tandemly arrayed gene families encoding proteins involved in skin cell differentiation. Discovery of s...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddq019
更新日期:2010-04-15 00:00:00
abstract::The human chr15q11-q13 imprinted cluster is linked to several disorders, including Prader-Willi (PWS) and Angelman (AS) syndromes. Recently, disease modeling approaches based on induced pluripotent stem cells (iPSCs) have been used to study these syndromes. A concern regarding the use of these cells for imprinted dise...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddy274
更新日期:2018-12-01 00:00:00
abstract::Increased age, BMI and HbA1c levels are risk factors for several non-communicable diseases. However, the impact of these factors on the genome-wide DNA methylation pattern in human adipose tissue remains unknown. We analyzed the DNA methylation of ∼480 000 sites in human adipose tissue from 96 males and 94 females and...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv124
更新日期:2015-07-01 00:00:00