A 5' differentially methylated sequence and the 3'-flanking region are necessary for H19 transgene imprinting

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منابع مشابه

The structural H19 gene is required for transgene imprinting.

The product of the H19 gene is an untranslated RNA that is expressed exclusively from the maternal chromosome during mammalian development. The H19 gene and its 5'-flanking sequence are required for the genomic imprinting of two paternally expressed genes, Ins-2 (encodes insulin-2) and Igf-2 (encodes insulin-like growth factor-2), that lie 90 and 115 kb 5' to the H19 gene, respectively. In this...

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Methylation Status of H19/IGF2 Differentially Methylated Region in in vitro Human Blastocysts Donated by Healthy Couples

Backgrund: Imprinted genes are a unique subset of few genes, which have been differentially methylated region (DMR) in a parental origin-dependent manner during gametogenesis, and these genes are highly protected during pre-implantation epigenetic reprogramming. Several studies heve shown that the particular vulnerability of imprinting genes during suboptimal pre- and peri-conception microenvir...

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Fate of methylated/unmethylated H19 imprinting control region after paternal and maternal pronuclear injection

The paternal-allele-specific methylation of the Igf2/H19 imprinting control region (ICR) is established during gametogenesis and maintained throughout development. To elucidate the requirement of the germline passage in the maintenance of the imprinting methylation, we established a system introducing a methylated or unmethylated ICR-containing DNA fragment (ICR-F) into the paternal or maternal...

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Developmentally regulated functions of the H19 differentially methylated domain.

Igf2 and H19 are physically linked imprinted genes. In embryonic liver, their reciprocal expression (paternal for Igf2 and maternal for H19) is controlled by a paternally methylated region (H19 DMD) located 5' of H19. This region contains a methylation-sensitive insulator that prevents the Igf2 promoters being activated by downstream enhancers on the maternal chromosome. In adult liver, Igf2 is...

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DNAase I hypersensitive during B cell enhancer are differentially methylated and DNA regions flanking the mouse Ig 3 ' alpha

wo B cell-specific enhancer elements are associated with the IgH gene cluster. One enhancer is located within the J-Cp intron (Ep), whereas a second enhancer ( 3 ’ a E ) is approximately 12.5 kb 3 ‘ of the Ca membrane exon. In an attempt to understand the function of 3’aE, we have characterized its surrounding structural milieu during various stages of B cell differentiation through analysis of...

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ژورنال

عنوان ژورنال: Molecular and Cellular Biology

سال: 1997

ISSN: 0270-7306,1098-5549

DOI: 10.1128/mcb.17.1.309