Genomic Imprinting in Human Placenta
نویسندگان
چکیده
Luca Lambertini1,2, Men-Jean Lee3, Carmen J. Marsit4 and Jia Chen1,5,6 1Department of Preventive Medicine, Mount Sinai School of Medicine, New York, 2Department of Obstetrics, Gynecology and Reproductive Science, Mount Sinai School of Medicine, New York, 3Department of Obstetrics and Gynecology, Indiana University-Purdue University, Indianapolis, 4Department of Pharmacology and Toxicology, Dartmouth Medical School, Hanover, 5Department of Pediatrics, Mount Sinai School of Medicine, New York, 6Department of Oncological Sciences, Mount Sinai School of Medicine, New York, USA
منابع مشابه
The Importance of Imprinting in the Human Placenta
As a field of study, genomic imprinting has grown rapidly in the last 20 years, with a growing figure of around 100 imprinted genes known in the mouse and approximately 50 in the human. The imprinted expression of genes may be transient and highly tissue-specific, and there are potentially hundreds of other, as yet undiscovered, imprinted transcripts. The placenta is notable amongst mammalian o...
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The epigenetic phenomenon of genomic imprinting provides an additional level of gene regulation that is confined to a limited number of genes, frequently, but not exclusively, important for embryonic development. The evolution and maintenance of imprinting has been linked to the balance between the allocation of maternal resources to the developing fetus and the mother's well being. Genes that ...
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BACKGROUND Genomic imprinting of the largest known cluster, the Kcnq1/KCNQ1 domain on mChr7/hChr11, displays significant differences between mouse and man. Of the fourteen transcripts in this cluster, imprinting of six is ubiquitous in mice and humans, however, imprinted expression of the other eight transcripts is only found in the mouse placenta. The human orthologues of the latter eight tran...
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Within the vertebrate groups, only mammals are subject to a specialized epigenetic process termed genomic imprinting in which genes are preferentially expressed from one parental allele. Imprinted expression has been reported for >100 mouse genes and, for approximately one-quarter of these genes, the imprinted expression is specific to the placenta (or extraembryonic tissues). This seemingly pl...
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Genomic imprinting is the phenomenon whereby mono-allelic expression of certain genes occurs depending on their parental origin. The observation that imprinting only occurs in placental mammals has led to the suggestion that it may play a role in this form of reproduction. In the present study we have investigated the pattern of expression of the human PEG3 gene in the early to term placenta, a...
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Genomic imprinting is widespread in eutherian mammals. Marsupial mammals also have genomic imprinting, but in fewer loci. It has long been thought that genomic imprinting is somehow related to placentation and/or viviparity in mammals, although neither is restricted to mammals. Most imprinted genes are expressed in the placenta. There is no evidence for genomic imprinting in the egg-laying mono...
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