N-Ethyl-N-nitrosourea (ENU) Increased Brain Mutations in Prenatal and Neonatal Mice but Not in the Adults
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چکیده
منابع مشابه
Induced by N-ethyl-N-nitrosourea
Phenotypic reversion of the rubber-band, muscledefective phenotype conferred by unc-93(e1500) was used to determine the utility of Nethyl-Nnitrosourea (ENU) as a mutagen for genetic research in Cuenmhabditis ekguns. In this system, ENU produces revertants at a frequency of 3 X equivalent to that of the commonly used mutagen, EMS. The gene identity of 154 ENU-induced revertants shows that the di...
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The mammalian epigenetic phenomena of X inactivation and genomic imprinting are incompletely understood. X inactivation equalizes X-linked expression between males and females by silencing genes on one X chromosome during female embryogenesis. Genomic imprinting functionally distinguishes the parental genomes, resulting in parent-specific monoallelic expression of particular genes. N-ethyl-N-ni...
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Metazoan introns contain a polypyrimidine tract immediately upstream of the AG dinucleotide that defines the 3' splice site. In the nematode Caenorhabditis elegans, 3' splice sites are characterized by a highly conserved UUUUCAG/R octamer motif. While the conservation of pyrimidines in this motif is strongly suggestive of their importance in pre-mRNA splicing, in vivo evidence in support of thi...
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The mutational specificity of N-ethyl-N-nitrosourea (ENU) was determined in Drosophila melanogaster using the vermilion locus as a target gene. 25 mutants (16 F1 and 9 F2 mutants) were cloned and sequenced. Only base-pair changes were observed; three of the mutants represented double base substitutions. Transition mutations were the most prominent sequence change: 61% were GC----AT and 18% AT--...
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ژورنال
عنوان ژورنال: Toxicological Sciences
سال: 2004
ISSN: 1096-0929
DOI: 10.1093/toxsci/kfh177