Article ; Online: The transgenic IG-DMR sequence of the mouse Dlk1-Dio3 domain acquired imprinted DNA methylation during the post-fertilization period.
2023 Volume 16, Issue 1, Page(s) 7
Abstract: Background: Allele-specific methylation of the imprinting control region (ICR) is the molecular basis for the genomic imprinting phenomenon that is unique to placental mammals. We previously showed that the ICR at the mouse H19 gene locus (H19 ICR) was ... ...
Abstract | Background: Allele-specific methylation of the imprinting control region (ICR) is the molecular basis for the genomic imprinting phenomenon that is unique to placental mammals. We previously showed that the ICR at the mouse H19 gene locus (H19 ICR) was unexpectedly established after fertilization and not during spermatogenesis in transgenic mice (TgM), and that the same activity was essential for the maintenance of paternal methylation of the H19 ICR at the endogenous locus in pre-implantation embryos. To examine the universality of post-fertilization imprinted methylation across animal species or imprinted loci, we generated TgM with two additional sequences. Results: The rat H19 ICR, which is very similar in structure to the mouse H19 ICR, unexpectedly did not acquire imprinted methylation even after fertilization, suggesting a lack of essential sequences in the transgene fragment. In contrast, the mouse IG-DMR, the methylation of which is acquired during spermatogenesis at the endogenous locus, did not acquire methylation in the sperm of TgM, yet became highly methylated in blastocysts after fertilization, but only when the transgene was paternally inherited. Since these two sequences were evaluated at the same genomic site by employing the transgene co-placement strategy, it is likely that the phenotype reflects the intrinsic activity of these fragments rather than position-effect variegation. Conclusions: Our results suggested that post-fertilization imprinted methylation is a versatile mechanism for protecting paternal imprinted methylation from reprogramming during the pre-implantation period. |
---|---|
MeSH term(s) | Animals ; Female ; Male ; Mice ; Pregnancy ; Rats ; Calcium-Binding Proteins ; DNA Methylation ; Fertilization ; Genomic Imprinting ; Intercellular Signaling Peptides and Proteins ; Membrane Proteins ; Mice, Transgenic ; Placenta ; RNA, Long Noncoding/genetics ; Semen |
Chemical Substances | Calcium-Binding Proteins ; Dlk1 protein, mouse ; Dlk1 protein, rat ; Intercellular Signaling Peptides and Proteins ; Membrane Proteins ; RNA, Long Noncoding |
Language | English |
Publishing date | 2023-02-17 |
Publishing country | England |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2462129-8 |
ISSN | 1756-8935 ; 1756-8935 |
ISSN (online) | 1756-8935 |
ISSN | 1756-8935 |
DOI | 10.1186/s13072-023-00482-x |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
More links
Kategorien
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.