Bacterial origins of cyclic nucleotide-activated antiviral immune signaling Review
| Authors: | Patel, D. J.; Yu, Y.; Jia, N. |
| Review Title: | Bacterial origins of cyclic nucleotide-activated antiviral immune signaling |
| Abstract: | Second-messenger-mediated signaling by cyclic oligonucleotides (cOs) composed of distinct base, ring size, and 3′-5′/2′-5′ linkage combinations constitutes the initial trigger resulting in activation of signaling pathways that have an impact on immune-mediated antiviral defense against invading viruses and phages. Bacteria and archaea have evolved CRISPR, CBASS, Pycsar, and Thoeris surveillance complexes that involve cO-mediated activation of effectors resulting in antiviral defense through either targeted nuclease activity, effector oligomerization-mediated depletion of essential cellular metabolites or disruption of host cell membrane functions. Notably, antiviral defense capitalizes on an abortive infection mechanism, whereby infected cells die prior to completion of the phage replication cycle. In turn, phages have evolved small proteins that target and degrade/sequester cOs, thereby suppressing host immunity. This review presents a structure-based mechanistic perspective of recent advances in the field of cO-mediated antiviral defense, in particular highlighting the ancient evolutionary adaptation by metazoans of bacterial cell-autonomous innate immune mechanisms. © 2022 Elsevier Inc. |
| Keywords: | genetics; metabolism; innate immunity; immunity, innate; antivirus agent; archaea; antiviral agents; signaling pathways; bacteriophage; cyclic nucleotides; bacteriophages; antiviral defense; archaeon; nucleotides, cyclic; crispr; clustered regularly interspaced short palindromic repeat; crispr cas system; crispr-cas systems; cyclic nucleotide; clustered regularly interspaced short palindromic repeats; cbass; pycsar; thoeris |
| Journal Title: | Molecular Cell |
| Volume: | 82 |
| Issue: | 24 |
| ISSN: | 1097-2765 |
| Publisher: | Cell Press |
| Date Published: | 2022-12-15 |
| Start Page: | 4591 |
| End Page: | 4610 |
| Language: | English |
| DOI: | 10.1016/j.molcel.2022.11.006 |
| PUBMED: | 36460008 |
| PROVIDER: | scopus |
| PMCID: | PMC9772257 |
| DOI/URL: | |
| Notes: | Review -- Export Date: 3 January 2023 -- Source: Scopus |
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