RGD Reference Report - Effects of cerebral ischemia in mice lacking DNA methyltransferase 1 in post-mitotic neurons. - Rat Genome Database
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Effects of cerebral ischemia in mice lacking DNA methyltransferase 1 in post-mitotic neurons.

Authors: Endres, M  Fan, G  Meisel, A  Dirnagl, U  Jaenisch, R 
Citation: Endres M, etal., Neuroreport. 2001 Dec 4;12(17):3763-6.
RGD ID: 9588643
Pubmed: (View Article at PubMed) PMID:11726790

DNA methylation is important for controlling gene expression and is catalyzed by DNA methyltransferase (Dnmt1) an enzyme abundant in brain. We recently demonstrated that mice expressing reduced levels of Dnmt1 are protected from cerebral ischemia. Here, we used the cre/loxP system to produce conditional mutants that lack Dnmt 1 in postmitotic neurons of the postnatal brain. We demonstrate that animals heterozygous for the conditional allele (Dnmt11lox/+) have significantly smaller infarcts following 1 h middle cerebral artery occlusion/reperfusion compared to their wildtype litters. Surprisingly, mice with a deletion of Dnmt1 in post-mitotic neurons (Dnmt11lox/c) were not protected. In conclusion, we demonstrate that reduced levels of Dnmt1, but not its absence, in post-mitotic neurons protect from ischemic brain injury.

Annotation

Disease Annotations    

Objects Annotated

Genes (Rattus norvegicus)
Dnmt1  (DNA methyltransferase 1)

Genes (Mus musculus)
Dnmt1  (DNA methyltransferase (cytosine-5) 1)

Genes (Homo sapiens)
DNMT1  (DNA methyltransferase 1)


Additional Information