Journal article
Targeted elimination of zygotic messages in Xenopus laevis embryos by modified oligonucleotides possessing terminal cationic linkages
Nucleic acids research, Vol.28(10), pp.2153-2157
05/15/2000
DOI: 10.1093/nar/28.10.2153
PMCID: PMC105372
PMID: 10773085
Abstract
We have designed a new class of modified antisense oligodeoxyribonucleotides (ODN) consisting of a central contiguous stretch of 6–8 unmodified nucleotides flanked by 3′- and 5′-regions containing several nucleotides joined by cationic internucleoside linkages. The positive charge results from modification of the internucleoside linkages as
N
,
N
-diethylethylenediamine phosphoramidates. These zwitterionic compounds show improved antisense activity in both
Xenopus
oocytes and embryos compared to our previously described chimeric oligonucleotides possessing neutral terminal internucleoside linkages. Using the localized maternal mRNA An2 as a target, we have shown that chimeric oligonucleotides with terminal positive charges are very effective in the sequence-specific elimination of maternal messages present in both oocytes and embryos. In addition, using the embryonic mRNA GS17 as a target, we have shown that these oligonucleotides can direct RNase H-mediated cleavage of messages produced at the onset of zygotic transcription, after the mid-blastula stage. These new compounds should be useful in attenuating embryonic gene expression to study the role of specific proteins in early vertebrate development.
Details
- Title: Subtitle
- Targeted elimination of zygotic messages in Xenopus laevis embryos by modified oligonucleotides possessing terminal cationic linkages
- Creators
- John M Dagle - Department of Pediatrics andJennifer L Littig - Department of Pediatrics andLillian B Sutherland - Department of Pediatrics andDaniel L Weeks - Department of Pediatrics and
- Resource Type
- Journal article
- Publication Details
- Nucleic acids research, Vol.28(10), pp.2153-2157
- Publisher
- Oxford University Press; Oxford, UK
- DOI
- 10.1093/nar/28.10.2153
- PMID
- 10773085
- PMCID
- PMC105372
- ISSN
- 0305-1048
- eISSN
- 1362-4962
- Language
- English
- Date published
- 05/15/2000
- Academic Unit
- Stead Family Department of Pediatrics; Epidemiology; Biochemistry and Molecular Biology; Neonatology
- Record Identifier
- 9984025399802771
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