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Use of fully modified 2'-O-methyl antisense oligos for loss-of-function studies in vertebrate embryos
Journal article   Open access   Peer reviewed

Use of fully modified 2'-O-methyl antisense oligos for loss-of-function studies in vertebrate embryos

Patricia N Schneider, John T Olthoff, Abby J Matthews and Douglas W Houston
Genesis (New York, N.Y. : 2000), Vol.49(3), pp.117-123
03/2011
DOI: 10.1002/dvg.20689
PMCID: PMC3121920
PMID: 21442720

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Abstract

Antisense oligonucleotides are commonly employed to study the roles of genes in development. Although morpholino phosphorodiamidate oligonucleotides (morpholinos) are widely used to block translation or splicing of target gene products' the usefulness of other modifications in mediating RNase-H independent inhibition of gene activity in embryos has not been investigated. In this study, we investigated the extent that fully modified 2'-O-methyl oligonucleotides (2'-OMe oligos) that can function as translation inhibiting reagents in vivo, using Xenopus and zebrafish embryos. We find that oligos against Xenopus β-catenin, wnt11, and bmp4 and against zebrafish chordin (chd), which can efficiently and specifically generate embryonic loss-of-function phenotypes comparable with morpholino injection and other methods. These results show that fully modified 2'-OMe oligos can function as RNase-H independent antisense reagents in vertebrate embryos and can thus serve as an alternative modification to morpholinos in some cases.
Xenopus Proteins - genetics Bone Morphogenetic Protein 4 - genetics Glycoproteins - metabolism Oligoribonucleotides, Antisense - pharmacology Wnt Proteins - metabolism Zebrafish - embryology Bone Morphogenetic Protein 4 - metabolism Intercellular Signaling Peptides and Proteins - metabolism RNA Splicing Wnt Proteins - genetics Xenopus laevis - genetics Glycoproteins - genetics Xenopus laevis - embryology Gene Expression Regulation, Developmental - drug effects Intercellular Signaling Peptides and Proteins - genetics Morpholines beta Catenin - metabolism Zebrafish - genetics beta Catenin - genetics Phenotype Animals Xenopus laevis - metabolism Oligoribonucleotides, Antisense - genetics Zebrafish - metabolism Xenopus Proteins - metabolism Morpholinos RNA, Messenger

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