Abstract:
:Gene amplification is a common phenomenon in malignant neoplasms of all types. One mechanism behind increased gene copy number is the formation of ring chromosomes. Such structures are mitotically unstable and during tumor progression they accumulate material from many different parts of the genome. Hence, their content varies considerably between and within tumors. Partly due to this extensive variation, the genetic content of many ring-containing tumors remains poorly characterized. Ring chromosomes are particularly prevalent in specific subtypes of sarcoma. Here, we have combined fluorescence in situ hybridization (FISH), global genomic copy number and gene expression data on ring-containing soft tissue sarcomas and show that they harbor two fundamentally different types of ring chromosome: MDM2-positive and MDM2-negative rings. While the former are often found in an otherwise normal chromosome complement, the latter seem to arise in the context of general chromosomal instability. In line with this, sarcomas with MDM2-negative rings commonly show complete loss of either CDKN2A or RB1 -both known to be important for genome integrity. Sarcomas with MDM2-positive rings instead show co-amplification of a variety of potential driver oncogenes. More than 100 different genes were found to be involved, many of which are known to induce cell growth, promote proliferation or inhibit apoptosis. Several of the amplified and overexpressed genes constitute potential drug targets.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Nord KH,Macchia G,Tayebwa J,Nilsson J,Vult von Steyern F,Brosjö O,Mandahl N,Mertens Fdoi
10.1093/hmg/ddt479subject
Has Abstractpub_date
2014-02-15 00:00:00pages
878-88issue
4eissn
0964-6906issn
1460-2083pii
ddt479journal_volume
23pub_type
杂志文章abstract::Uncontrolled cell cycle entry, resulting from deregulated CDK-RB1-E2F pathway activity, is a crucial determinant of neuroblastoma cell malignancy. Here we identify neuroblastoma-suppressive functions of the p19-INK4d CDK inhibitor and uncover mechanisms of its repression in high-risk neuroblastomas. Reduced p19-INK4d ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddu406
更新日期:2014-12-20 00:00:00
abstract::Hidrotic ectodermal dysplasia (HED), Clouston type, is an autosomal dominant skin disorder which is most common in the French-Canadian population and is characterized by hair defects, nail dystrophy and palmoplantar hyperkeratosis. Biophysical and biochemical studies conducted in HED suggested a molecular abnormality ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/5.4.543
更新日期:1996-04-01 00:00:00
abstract::Genomic data offer a goldmine of information for understanding the contribution of genetic variation makes to health and disease. The potential of genomic medicine, to predict, diagnose, manage and treat genetic disease, is underpinned by accurate variant interpretation. This in itself hinges on the ability to access ...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddy084
更新日期:2018-05-01 00:00:00
abstract::The role of BRCA1 in breast and ovarian tumor suppression has been primarily ascribed to the maintenance of genome integrity. BRCA1 interacts with components of the non-homologous end-joining pathway previously shown to play a role in telomere maintenance in yeast. Here, we provide evidence that links Brca1 with telom...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl002
更新日期:2006-03-15 00:00:00
abstract::Niemann-Pick type C (NPC) disease is a fatal recessively inherited lysosomal cholesterol-sphingolipidosis. Mutations in the NPC1 gene cause approximately 95% of the cases, the rest being caused by NPC2 mutations. Here the molecular basis of a severe infantile form of the disease was dissected. The level of NPC1 protei...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg025
更新日期:2003-02-01 00:00:00
abstract::Homozygosity for Cst6 null alleles causes the phenotype of the ichq mouse, which is a model for human harlequin ichthyosis (OMIM 242500), a genetically heterogeneous group of keratinization disorders. Here we report evidence for the mechanism by which deficiency of the cysteine protease inhibitor cystatin M/E (the Cst...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddh115
更新日期:2004-05-15 00:00:00
abstract::PLEC, the gene encoding the cytolinker protein plectin, has eight tissue-specific isoforms in humans, arising by alternate splicing of the first exon. To date, all PLEC mutations that cause epidermolysis bullosa simplex (EBS) were found in exons common to all isoforms. Due to the ubiquitous presence of plectin in mamm...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv066
更新日期:2015-06-01 00:00:00
abstract::X-Linked adrenoleukodystrophy (X-ALD) is a neurodegenerative disorder characterized by reduced peroxisomal very long chain fatty acid (VLCFA) beta-oxidation. The X - ALD gene product (ALDP) is a peroxisomal transmembrane protein with an ATP binding cassette (ABC). ALDP and three other ABC proteins (PMP70, ALDR, P70R) ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/7.2.239
更新日期:1998-02-01 00:00:00
abstract::The success of the human genome sequencing project has created wide-spread interest in exploring the human epigenome in order to elucidate how the genome executes the information it holds. Although all (nucleated) human cells effectively contain the same genome, they contain very different epigenomes depending upon ce...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddi110
更新日期:2005-04-15 00:00:00
abstract::The expansion of CAG.CTG trinucleotide repeats has been associated with an increasing number of human diseases. Once into the expanded disease-associated range, the repeats become dramatically unstable in the germline and also throughout the soma. Instability is expansion-biased, contributing towards the unusual genet...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/10.8.845
更新日期:2001-04-01 00:00:00
abstract::Ciliary trafficking defects are the underlying cause of many ciliopathies, including Retinitis Pigmentosa (RP). Anterograde intraflagellar transport (IFT) is mediated by kinesin motor proteins; however, the function of the homodimeric Kif17 motor in cilia is poorly understood, whereas Kif7 is known to play an importan...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddx143
更新日期:2017-07-01 00:00:00
abstract::A large number of mutations in the gene encoding the catalytic subunit of mitochondrial DNA polymerase γ (POLγA) cause human disease. The Y955C mutation is common and leads to a dominant disease with progressive external ophthalmoplegia and other symptoms. The biochemical effect of the Y955C mutation has been extensiv...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddq565
更新日期:2011-03-15 00:00:00
abstract::The TRPS1 gene codes for a 1281 amino acids nuclear transcription factor with an unusual combination of different types of zinc finger motifs, including GATA-type DNA-binding and IKAROS-like zinc fingers. TRPS1 is a repressor of GATA-regulated genes and implicated in the human tricho-rhino-phalangeal syndromes. We fou...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg145
更新日期:2003-06-01 00:00:00
abstract::Genome-wide association studies have identified susceptibility loci for esophageal squamous cell carcinoma (ESCC). We conducted a meta-analysis of all single-nucleotide polymorphisms (SNPs) that showed nominally significant P-values in two previously published genome-wide scans that included a total of 2961 ESCC cases...
journal_title:Human molecular genetics
pub_type: 杂志文章,meta分析
doi:10.1093/hmg/dds029
更新日期:2012-05-01 00:00:00
abstract::Parental genetic relatedness may lead to adverse health and fitness outcomes in the offspring. However, the degree to which it affects human delivery timing is unknown. We use genotype data from ≃25 000 parent-offspring trios from the Norwegian Mother, Father and Child Cohort Study to optimize runs of homozygosity (RO...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddaa255
更新日期:2020-12-08 00:00:00
abstract::Myotonic dystrophy type I (DM1) is an RNA-mediated disease caused by a non-coding CTG repeat expansion. A key feature of the RNA-mediated pathogenesis model for DM is the disrupted splicing of specific pre-mRNA targets. A link has been established between splicing regulation by CUG-BP1, a member of the CELF family of ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddi162
更新日期:2005-06-01 00:00:00
abstract::Cell pathology in lysosomal storage diseases is characterized by the formation of distended vacuoles with characteristics of lysosomes. Our previous studies in mucopolysaccharidosis type IIIB (MPSIIIB), a disease in which a genetic defect induces the accumulation of undigested heparan sulfate (HS) fragments, led to th...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddr584
更新日期:2012-04-01 00:00:00
abstract::Cornelia de Lange syndrome (CdLS), which is reported to affect ∼1 in 10 000 to 30 000 newborns, is a multisystem organ developmental disorder with relatively mild to severe effects. Among others, intellectual disability represents an important feature of this condition. CdLS can result from mutations in at least five ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddy329
更新日期:2019-01-01 00:00:00
abstract::Accumulating data suggest a link between alterations/deficiencies in cytoskeletal proteins and the progression of cardiomyopathy and heart failure, although the molecular basis for this link remains unclear. Cypher/ZASP is a cytoskeletal protein localized in the sarcomeric Z-line. Mutations in its encoding gene have b...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn400
更新日期:2009-02-15 00:00:00
abstract::Huntington's disease (HD) is caused by the expansion mutation above a length threshold of a polyglutamine (polyQ) stretch in the huntingtin (Htt) protein. Mutant Htt (mHtt) pathogenicity is proposed to rely on its malfunction and propensity to misfold and aggregate. Htt has scaffolding properties and has been reported...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddr178
更新日期:2011-07-15 00:00:00
abstract::Deletions of the 22q11.2 region distal to the 22q11.21 microdeletion syndrome region have recently been described in individuals with mental retardation and congenital anomalies. Because these deletions are mediated by low-copy repeats (LCRs), located distal to the 22q11.21 DiGeorge/velocardiofacial microdeletion regi...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddp042
更新日期:2009-04-15 00:00:00
abstract::Marfan syndrome is an autosomal dominant disorder mainly caused by mutations within FBN1 gene. The disease displays large variability in age of onset or severity and very poor phenotype/genotype correlations have been demonstrated. We investigated the hypothesis that phenotype severity could be related to the variable...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddv037
更新日期:2015-05-15 00:00:00
abstract::Circletail is one of only two mouse mutants that exhibit the most severe form of neural tube defect (NTD), termed craniorachischisis. In this disorder, almost the entire brain and spinal cord is affected, owing to a failure to initiate neural tube closure. Craniorachischisis is a significant cause of lethality in huma...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg014
更新日期:2003-01-15 00:00:00
abstract::Lysosomal storage diseases are due to inherited deficiencies in various enzymes involved in basic metabolic processes. As with other genetic diseases, accurate structure data for these enzymatic proteins should help in better understanding the molecular effects of mutations identified in patients with the correspondin...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/9.6.967
更新日期:2000-04-12 00:00:00
abstract::Mitochondrial dysfunction is implicated in aging and degenerative disorders such as Parkinson's disease (PD). Continuous fission and fusion of mitochondria shapes their morphology and is essential to maintain oxidative phosphorylation. Loss-of-function mutations in PTEN-induced kinase1 (PINK1) or Parkin cause a recess...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/dds352
更新日期:2012-11-15 00:00:00
abstract::Dominant mutations in the gene encoding the ubiquitously-expressed splicing factor PRPF31 cause retinitis pigmentosa, a form of hereditary retinal degeneration, with reduced penetrance. We and others have previously shown that penetrance is tightly correlated with PRPF31 expression, as lymphoblastoid cell lines (LCLs)...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn212
更新日期:2008-10-15 00:00:00
abstract::We recently reported that mutations in the widely expressed nuclear protein TOPORS (topoisomerase I-binding arginine/serine rich) are associated with autosomal dominant retinal degeneration. However, the precise localization and a functional role of TOPORS in the retina remain unknown. Here, we demonstrate that TOPORS...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddq543
更新日期:2011-03-01 00:00:00
abstract::The near completeness of human chromosome sequences is facilitating accurate characterization and assessment of all classes of genomic variation. Particularly, using the DNA reference sequence as a guide, genome scanning technologies, such as microarray-based comparative genomic hybridization (array CGH) and genome-wi...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddl057
更新日期:2006-04-15 00:00:00
abstract::Neurodevelopmental disorders frequently share common clinical features and appear high rate of comorbidity, such as those present in patients with attention-deficit hyperactivity disorder (ADHD) and autism spectrum disorders (ASD). While characterizing behavioral phenotypes in the mouse model of cyclin-dependent kinas...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddx279
更新日期:2017-10-15 00:00:00
abstract::To identify genes that affect body mass index (BMI) in American Indians who are predominately of Pima Indian heritage, we previously completed a genome-wide association study in 1120 American Indians. That study also included follow-up genotyping for 9 SNPs in 2133 additional subjects. A comprehensive follow-up study ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddt291
更新日期:2013-11-01 00:00:00