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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 establishment of the left–right (LR) axis in zebrafish embryos relies on signals from the dorsal forerunner cells (DFC) and the Kupffer's vesicle (KV). While the Wnt signaling network influences many aspects of embryonic development, its precise role in LR patterning is still unclear. One branch of the Wnt network leads to stabilization of β-catenin and activation of downstream target genes. Other...
The ability to manipulate gene expression in Xenopus oocytes and then generate fertilized embryos by transfer into host females has made it possible to rapidly characterize maternal signaling pathways in vertebrate development. Maternal mRNAs in particular can be efficiently depleted using antisense deoxyoligonucleotides (oligos), mediated by endogenous RNase-H activity. Since the microinjection of...
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