Genome-wide CRISPR activation screen identifies JADE3 as an antiviral activator of NF-kB

Munir, M.; Embry, A.; Doench, J. G.; Heaton, N.; Wilen, C. B.; Orchard, R.

doi:10.1101/2023.09.29.560128

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bioRxiv · 10.1101/2023.09.29.560128

Genome-wide CRISPR activation screen identifies JADE3 as an antiviral activator of NF-kB

Munir, M.·Embry, A.·Doench, J. G.·Heaton, N.·Wilen, C. B.·Orchard, R.

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Abstract

The innate immune system features a web of interacting pathways that require exquisite regulation. To identify novel nodes in this immune landscape we conducted a gain of function, genome-wide CRISPR activation screen with influenza A virus. We identified both appreciated and novel antiviral genes, including JADE3 a protein involved in directing the histone acetyltransferase HBO1 complex to modify chromatin and regulate transcription. JADE3 is both necessary and sufficient to restrict influenza A virus infection. Interestingly, expression of the closely related paralogues JADE1 and JADE2 are unable to restrict influenza A virus infection, suggesting a distinct function of JADE3. We identify both shared and unique transcriptional signatures between uninfected cells expressing JADE3 and JADE2. These data provide a framework for understanding the overlapping and distinct functions of the JADE family of paralogues. Specifically, we find that JADE3 expression activates the NF-kB signaling pathway, consistent with an antiviral function. Therefore, we propose JADE3, but not JADE1 or JADE2, activates an antiviral genetic program involving the NF-kB pathway to restrict influenza A virus infection.

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Munir, M., Embry, A., Doench, J. G., Heaton, N., Wilen, C. B., Orchard, R.. 2023-09-29. Genome-wide CRISPR activation screen identifies JADE3 as an antiviral activator of NF-kB. https://doi.org/10.1101/2023.09.29.560128

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