Bacteriophages inhibit and evade cGAS-like immune function in bacteria

E Huiting, X Cao, J Ren, JS Athukoralage, Z Luo… - Cell, 2023 - cell.com
A fundamental strategy of eukaryotic antiviral immunity involves the cGAS enzyme, which
synthesizes 2′, 3′-cGAMP and activates the effector STING. Diverse bacteria contain …

Bacterial cGAS senses a viral RNA to initiate immunity

DV Banh, CG Roberts, A Morales-Amador, BA Berryhill… - Nature, 2023 - nature.com
Cyclic oligonucleotide-based antiphage signalling systems (CBASS) protect prokaryotes
from viral (phage) attack through the production of cyclic oligonucleotides, which activate …

[HTML][HTML] Cyclic GMP–AMP signalling protects bacteria against viral infection

D Cohen, S Melamed, A Millman, G Shulman… - Nature, 2019 - nature.com
The cyclic GMP–AMP synthase (cGAS)–STING pathway is a central component of the cell-
autonomous innate immune system in animals,. The cGAS protein is a sensor of cytosolic …

[HTML][HTML] CBASS phage defense and evolution of antiviral nucleotide signaling

B Duncan-Lowey, PJ Kranzusch - Current opinion in immunology, 2022 - Elsevier
Cyclic oligonucleotide-based antiphage signaling system (CBASS) immunity is a
widespread form of antiphage defense in bacteria and archaea. Each CBASS operon …

CBASS to cGAS-STING: the origins and mechanisms of nucleotide second messenger immune signaling

KM Slavik, PJ Kranzusch - Annual Review of Virology, 2023 - annualreviews.org
Host defense against viral pathogens is an essential function for all living organisms. In cell-
intrinsic innate immunity, dedicated sensor proteins recognize molecular signatures of …

Ubiquitin-like conjugation by bacterial cGAS enhances anti-phage defence

JM Jenson, T Li, F Du, CK Ea, ZJ Chen - Nature, 2023 - nature.com
Abstract cGAS is an evolutionarily conserved enzyme that has a pivotal role in immune
defence against infection,–. In vertebrate animals, cGAS is activated by DNA to produce …

cGAMP-activated cGAS–STING signaling: its bacterial origins and evolutionary adaptation by metazoans

DJ Patel, Y Yu, W Xie - Nature Structural & Molecular Biology, 2023 - nature.com
The metazoan cGAMP-activated cGAS–STING innate immunity pathway is triggered in
response to genomic instability and DNA damage, thereby providing host defense against …

Diversity and classification of cyclic-oligonucleotide-based anti-phage signalling systems

A Millman, S Melamed, G Amitai, R Sorek - Nature microbiology, 2020 - nature.com
Cyclic-oligonucleotide-based anti-phage signalling systems (CBASS) are a family of
defence systems against bacteriophages (hereafter phages) that share ancestry with the …

Molecular mechanisms of the CdnG-Cap5 antiphage defense system employing 3′, 2′-cGAMP as the second messenger

S Fatma, A Chakravarti, X Zeng, RH Huang - Nature communications, 2021 - nature.com
Cyclic-oligonucleotide-based antiphage signaling systems (CBASS) are diverse and
abundant in bacteria. Here, we present the biochemical and structural characterization of …

Evolutionary origins of cGAS-STING signaling

SR Margolis, SC Wilson, RE Vance - Trends in immunology, 2017 - cell.com
Detection of foreign nucleic acids is an important strategy for innate immune recognition of
pathogens. In vertebrates, pathogen-derived DNA is sensed in the cytosol by cGAS, which …