Abstract:
:Genomic imprinting is a phenomenon whereby monoallelic gene expression occurs in a parent-of-origin-specific manner. A subset of imprinted genes acquires a tissue-specific imprinted status during the course of tissue development, and this process can be analyzed by means of an in vitro differentiation system utilizing embryonic stem (ES) cells. In neurons, the gene Ube3a is expressed from the maternal allele only, and a paternally expressed non-coding, antisense RNA has been implicated in the imprinting process in mice and humans. Here, to study the genomic imprinting mechanism, we established F1 hybrid ES cells derived from two sub-species of Mus musculus and established an in vitro neuronal differentiation system in which neuron-specific imprinting of Ube3a was recapitulated. With this system, we revealed that the switch from biallelic expression to maternal, monoallelic expression of Ube3a occurs late in neuronal development, during the neurite outgrowth period, and that the expression of endogenous antisense transcript from the Ube3a locus is up-regulated several hundred-fold during the same period. Our results suggest that evaluation of the quality of ES cells by studying their differentiation in vitro should include evaluation of epigenetic aspects, such as a comparison with the genomic imprinting status found in tissues in vivo, in addition to the evaluation of differentiation gene markers and morphology. Our F1 hybrid ES cells and in vitro differentiation system will allow researchers to investigate complex end-points such as neuron-specific genomic imprinting, and our F1 hybrid ES cells are a useful resource for other tissue-specific genomic imprinting and epigenetic analyses.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Kohama C,Kato H,Numata K,Hirose M,Takemasa T,Ogura A,Kiyosawa Hdoi
10.1093/hmg/ddr577subject
Has Abstractpub_date
2012-03-15 00:00:00pages
1391-401issue
6eissn
0964-6906issn
1460-2083pii
ddr577journal_volume
21pub_type
杂志文章abstract::Skin color is a highly heritable human trait, and global variation in skin pigmentation has been shaped by natural selection, migration, and admixture. Ethnically diverse African populations harbor extremely high levels of genetic and phenotypic diversity, and skin pigmentation varies widely across Africa. Recent geno...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddab007
更新日期:2021-01-12 00:00:00
abstract::Protein-protein interactions are fundamental to all biological processes, and a comprehensive determination of all protein-protein interactions that can take place in an organism provides a framework for understanding biology as an integrated system. The availability of genome-scale sets of cloned open reading frames ...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddi335
更新日期:2005-10-15 00:00:00
abstract::Lysosomes, melanosomes and platelet-dense granules are abnormal in the mouse hypopigmentation mutant pearl. The beta3A subunit of the AP-3 adaptor complex, which likely regulates protein trafficking in the trans - Golgi network/endosomal compartments, was identified as a candidate for the pearl gene by a positional/ca...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/8.2.323
更新日期:1999-02-01 00:00:00
abstract::Glycogen storage disease type 1a (GSD Ia) is an inborn error of metabolism caused by mutations in the G6PC gene, encoding the catalytic subunit of glucose-6-phosphatase. Early symptoms include severe fasting intolerance, failure to thrive and hepatomegaly, biochemically associated with nonketotic hypoglycemia, fasting...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddz283
更新日期:2020-01-15 00:00:00
abstract::Mammalian sex chromosomes are thought to be descended from a homologous pair of autosomes: a testis-determining allele which defined the Y chromosome arose, recombination between the nascent X and Y chromosomes became restricted and the Y chromosome gradually lost its non-essential genetic functions. This model was or...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/7.3.429
更新日期:1998-03-01 00:00:00
abstract::Mucopolysaccharidosis type VI (MPS-VI), caused by mutational inactivation of the glycosaminoglycan-degrading enzyme arylsulfatase B (Arsb), is a lysosomal storage disorder primarily affecting the skeleton. We have previously reported that Arsb-deficient mice display high trabecular bone mass and impaired skeletal grow...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddaa006
更新日期:2020-03-27 00:00:00
abstract::We describe a new Type II congenital disorder of glycosylation (CDG-II) caused by mutations in the conserved oligomeric Golgi (COG) complex gene, COG8. The patient has severe psychomotor retardation, seizures, failure to thrive and intolerance to wheat and dairy products. Analysis of serum transferrin and total serum ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddm028
更新日期:2007-04-01 00:00:00
abstract::Epidermolytic hyperkeratosis (EHK), (bullous congenital ichthyosiform erythroderma), is an autosomal dominant human skin disorder. Recently, we and others have described mutations in keratins 1 and 10 (K1 and K10) in patients with this disease. Structure-function models predict that these mutations would impair normal...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/2.12.2147
更新日期:1993-12-01 00:00:00
abstract::Nicotine is thought to act on brain monoamine systems that normally mediate diverse motivational behaviors. How monoamine-related genes contribute to behavioral traits (e.g. responses to novel stimuli) comorbid with the susceptibility to nicotine addiction is still poorly understood. We examined the impact of constitu...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl206
更新日期:2006-09-15 00:00:00
abstract::alpha2-Macroglobulin (A2M) is a proteinase inhibitor found in association with senile plaques (SP) in Alzheimer's disease (AD). A2M has been implicated biochemically in binding and degradation of the amyloid beta (Abeta) protein which accumulates in SP. We studied the relationship between Alzheimer's disease and a com...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/7.12.1953
更新日期:1998-11-01 00:00:00
abstract::Immunoglobulins play an essential part in the immune system, and immunoglobulin deficiencies can have profound medical consequences. The genetic control and regulation of the immunoglobulin response is therefore of interest. Previous investigations have identified a number of loci influencing total and specific IgE le...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/7.1.27
更新日期:1998-01-01 00:00:00
abstract::We isolated peroxisome biogenesis mutants ZP128 and ZP150 from rat PEX2 -transformed Chinese hamster ovary (CHO) cells, by the 9-(1'-pyrene)nonanol/ultraviolet method. The mutants lacked morphologically recognizable peroxisomes and showed a typical peroxisome assembly-defective phenotype such as a high sensitivity to ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/8.9.1673
更新日期:1999-09-01 00:00:00
abstract::Missense mutations and extra copies of the alpha-Synuclein gene result in Parkinson disease (PD). Human stem and progenitor cells can be expanded from embryonic tissues and provide a source of non-transformed neural cells to explore the effects of these pathogenic mutations specifically in human nervous tissue. We ove...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddm008
更新日期:2007-03-15 00:00:00
abstract::Beside the well-known polyglutamine expansions involved in several neurodegenerative disorders, convergent recent findings pointed to the expansion of polyalanine stretches as a disease mechanism in congenital malformations, skeletal dysplasia and nervous system anomalies. Polyalanine stretches have been predicted in ...
journal_title:Human molecular genetics
pub_type: 杂志文章,评审
doi:10.1093/hmg/ddh251
更新日期:2004-10-01 00:00:00
abstract::Tuberous sclerosis complex (TSC) is an autosomal dominant genetic disorder caused by mutations in either of two genes, TSC1 or TSC2, resulting in the constitutive activation of the mammalian target of rapamycin complex 1 (mTORC1). mTOR inhibitors are now considered the treatment of choice for TSC disease. A major path...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddx214
更新日期:2017-09-01 00:00:00
abstract::Increasing evidence suggests that the accumulation of amyloid beta (Aβ) in synapses and synaptic mitochondria causes synaptic mitochondrial failure and synaptic degeneration in Alzheimer's disease (AD). The purpose of this study was to better understand the effects of Aβ in mitochondrial activity and synaptic alterati...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddr381
更新日期:2011-12-01 00:00:00
abstract::Hirschsprung disease (HSCR, aganglionic megacolon) is a frequent congenital malformation regarded as a multigenic neurocristopathy. Two susceptibility genes have been recently identified in HSCR, namely the RET proto-oncogene and the endothelin B receptor (EDNRB) gene. Hitherto however, homozygosity for EDNRB mutation...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/5.3.355
更新日期:1996-03-01 00:00:00
abstract::In humans, poor nutrition, malabsorption and variation in cobalamin (vitamin B12) metabolic genes are associated with hematological, neurological and developmental pathologies. Cobalamin is transported from blood into tissues via the transcobalamin (TC) receptor encoded by the CD320 gene. We created mice carrying a ta...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddy267
更新日期:2018-10-15 00:00:00
abstract::Reduced activity of beta4-galactosyltransferase 7 (beta4GalT-7), an enzyme involved in synthesizing the glycosaminoglycan linkage region of proteoglycans, is associated with the progeroid form of Ehlers-Danlos syndrome (EDS). In the invertebrates Drosophila melanogaster and Caenorhabditis elegans, mutations in beta4Ga...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddm372
更新日期:2008-04-01 00:00:00
abstract::Recent studies have made great strides towards identifying putative genetic events underlying the evolution of the human brain and its emergent cognitive capacities. One of the most intriguing findings is the recurrent identification of adaptive evolution in genes associated with primary microcephaly, a developmental ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddl487
更新日期:2007-03-15 00:00:00
abstract::The autosomal dominant myopathy facioscapulohumeral muscular dystrophy (FSHD) is causally related to a short Eco RI fragment detected by probe p13E-11. This remnant fragment is the result of a deletion of an integral number of tandemly arrayed 3.3 kb repeat units (D4Z4) on 4q35. Despite intensive efforts, no transcrib...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/7.8.1207
更新日期:1998-08-01 00:00:00
abstract::To further identify novel susceptibility loci of nasopharyngeal carcinoma (NPC), we here extended our previous genome-wide association study (GWAS) by boosting statistical power with larger sample size and validating more SNPs in the ranking list based on the GWAS P-values. The discovery stage consisting of 463,250 SN...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddw200
更新日期:2016-08-15 00:00:00
abstract::Cone photoreceptors (cones) are essential for high-resolution daylight vision and colour perception. Loss of cones in hereditary retinal diseases has a dramatic impact on human vision. The mechanisms underlying cone death are poorly understood, and consequently, there are no treatments available. Previous studies sugg...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddw219
更新日期:2016-09-01 00:00:00
abstract::Chronic obstructive pulmonary disease (COPD) is characterized by airway epithelial damage, bronchoconstriction, parenchymal destruction and mucus hypersecretion. Upon activation by a broad range of stimuli, transient receptor potential vanilloid 4 (TRPV4) functions to control airway epithelial cell volume and epitheli...
journal_title:Human molecular genetics
pub_type: 杂志文章,多中心研究
doi:10.1093/hmg/ddp111
更新日期:2009-06-01 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::Deletions within the neurexin 1 gene (NRXN1; 2p16.3) are associated with autism and have also been reported in two families with schizophrenia. We examined NRXN1, and the closely related NRXN2 and NRXN3 genes, for copy number variants (CNVs) in 2977 schizophrenia patients and 33 746 controls from seven European popula...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn351
更新日期:2009-03-01 00:00:00
abstract::Costello syndrome (CS) is a developmental disorder characterized by postnatal reduced growth, facial dysmorphism, cardiac defects, mental retardation and skin and musculo-skeletal defects. CS is caused by HRAS germline mutations. In the majority of cases, mutations affect Gly(12) and Gly(13) and are associated with a ...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddp548
更新日期:2010-03-01 00:00:00
abstract::The apolipoprotein A5 gene (APOA5 ) has been shown to play an important role in determining plasma triglyceride concentrations in humans. We describe here a novel variant, c.553G>T, in the apolipoprotein A5 gene that is associated with hypertriglyceridemia. In contrast to some other polymorphisms, which occur in non-c...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddg255
更新日期:2003-10-01 00:00:00
abstract::Mitochondrial DNA (mtDNA) depletion syndrome (MDS), an autosomal recessive condition, is characterized by variable organ involvement with decreased mtDNA copy number and activities of respiratory chain enzymes in affected tissues. MtDNA depletion has been associated with mutations in nine autosomal genes, including th...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddn143
更新日期:2008-08-15 00:00:00
abstract::Duchenne muscular dystrophy (DMD) is a neuromuscular disease caused by mutations in the dystrophin gene. The subcellular mechanisms of DMD remain poorly understood and there is currently no curative treatment available. Using a Caenorhabditis elegans model for DMD as a pharmacologic and genetic tool, we found that cyc...
journal_title:Human molecular genetics
pub_type: 杂志文章
doi:10.1093/hmg/ddt302
更新日期:2013-11-15 00:00:00