DOI: 10.1101/479188Nov 27, 2018Paper

Induction of Interferon-Stimulated Genes and Cellular Stress Pathways by Morpholinos

BioRxiv : the Preprint Server for Biology
Jason Kuan Han LaiDidier Y R Stainier


The phenotypes caused by morpholino-mediated interference of gene function in zebrafish are often not observed in the corresponding mutant(s). We took advantage of the availability of a relatively large collection of transcriptomic datasets to identify common signatures that characterize morpholino-injected animals (morphants). In addition to the previously reported activation of tp53 expression, we observed increased expression of the interferon-stimulated genes (ISGs), isg15 and isg20 , an extrinsic cell death pathway gene, casp8 , and other cellular stress response genes including phlda3 , mdm2 and gadd45aa . Studies involving segmentation stage embryos were more likely to show upregulation of these genes. We also found that these genes could be upregulated by an increasing dose of egfl7 morpholino, or high doses of standard control morpholino. Thus, these data suggest that morpholinos can stimulate the innate immune response in zebrafish, as was recently reported in Xenopus.

Related Concepts

Cessation of Life
Up-Regulation (Physiology)
Xenopus laevis
TP53 gene
Mdm2 protein
Gene Function

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