#microsky #phagesky #phage defence academic.oup.com/nar/article/...

Excited to share our discovery of a new programmable RNA-guided DNA-targeting system hiding inside bacteriophages that predates CRISPR. We call it VIPR (Viral Interference Programmable Repeat), and it uses an entirely new logic to find its targets. Thread + link below.

We found that TIR domains in animal immune proteins, including the human TLR4, are enzymes that cleave NAD+ to produce the signaling molecule cADPR Read our new preprint by talented Bohdana Hurieva: “Conserved catalytic activity of immune TIR domains in animals” www.biorxiv.org/content/10.6...

Huge effort to systematically characterize TIR domains🔬 revealing conserved catalytic activities, including surprising human TIR! Beautiful work by @bhurieva.bsky.social and coauthors, congrats!!✨👏🏻

How diverse is bacterial immunity ? We report in @science.org how language models allowed us to predict 2.4M antiphage proteins spanning >23K novel potential systems. 👏 @emordret.bsky.social, @alexhv.bsky.social & al doi.org/10.1126/scie... Explore them here defensefinder.mdmlab.fr/wiki/refseq_...

We are excited to share our new paper in Molecular Cell uncovering how the viral lncRNA RNA2.7 reshapes host cell biology! sciencedirect.com/science/authShare/S1097276526001565/20260324T143400Z/1?md5=16c84051c2f253c4665427f837a529d3&dgcid=author A thread 🧵

Excited to share the first preprint from the lab! We show that ApeA defends against RNA phage infection by cleaving the phage genome: www.biorxiv.org/content/10.6...

New preprint: Cyclic tri-adenylate signalling by a Panoptes anti-phage guard system with a CARF-TM effector. Great work led by Sabine Grüschow www.biorxiv.org/content/10.6...

Our work on bacterial Schlafens in phage defense is out today @natmicrobiol.nature.com! Check out the final version here: rdcu.be/e7Bmz We are looking for postdocs and students to expand our team! Official postings are coming soon. Please reach out if you're interested! #phage #phagesky #microsky

Very excited to see this work out today! Discovering viral immune antagonists directly from predicted protein structures. 🤩 www.science.org/doi/10.1126/... Huge thanks to the amazing collaborators! 🤗

CBASS is a cyclic nucleotide-based antiviral system in bacteria that is related to cGAS-STING signaling in animals. One of the big questions is how CBASS is activated during phage infection? We made some progress on this during my final year in the Kranzusch lab. www.biorxiv.org/content/10.6...

After >10 years of our lab studying bacterial cGAS-like enzymes, @hobbslabutah.bsky.social finally reconstitutes viral sensing in vitro and discovers how these ancient receptors sense phage protease enzymes to detect virion assembly and activate antiviral immunity www.biorxiv.org/content/10.6...

@nitzantal.bsky.social @romihadary.bsky.social @soreklab.bsky.social use structure prediction and in silico binding site analysis to discover viral immune evasion proteins! Exciting for our lab @reneechang.bsky.social @riveralopz.bsky.social to help with this project. www.science.org/doi/10.1126/...

Excited to see our paper out in @science.org 🧽✨ Congrats @nitzantal.bsky.social !

Congratulations to Sonomi Yamaguchi for her paper at @nature.com. Sonomi discovered Clover defense and explained how nucleotide signals control each step of viral sensing, immune regulation, and viral restriction – named for her beautiful "four-leaf" structures 🍀 www.nature.com/articles/s41...

Excited to share our new paper led by a wonderful Jing Liu on designing de novo IDRs🧪🖥️

Chemical inhibition of a bacterial immune system Small molecules inhibit type II Thoeris anti-phage systems from diverse bacteria. One compound, IP6C, improves phage-therapy against P. aeruginosa & is effective against Thoeris in polymicrobial communities www.cell.com/cell-host-mi...

Another amazing work by @ostermanilya.bsky.social! A new NAD⁺-depleting defense system and its phage antagonists, revealing an exciting bacterial–phage arms race. 🛡️⚔️ Congrats Ilya and coauthors!

Our new paper is out in Nature 🎉. We show that m1Ψ in mRNA vaccines doesn’t just quiet immunity, it also directly enhance translation by reshaping ribosome dynamics in a sequence-dependent way 🧬 Full paper : rdcu.be/eY5gx

“Up ’till now, we couldn’t detect it, because we didn’t look at the garbage cans of cells.” Yifat Merbl found a new trick of the immune system, and is part of Nature’s 10, a list of people who shaped science in 2025 go.nature.com/3XZQdgY

Bacterial genomes encode a rich repertoire of antiphage systems, but we still know surprisingly little about when these systems are actually expressed. In this preprint, Lucas Paoli et al, ask what shapes antiphage systems expression in native contexts. www.biorxiv.org/content/10.6...

Incredible to learn how far-reaching and diverse Thoeris really is! TIRs play key roles across kingdoms, and this work beautifully highlights their bacterial origins. Congrats @erezyirmiya.bsky.social & Azita! 👏🌟

🧬🛡️How are new immune mechanisms created? We show how Lamassu antiphage system, originated from a DNA-repair complex and evolved into a compact and modular immune machine, wt Dinshaw Patel lab in @pnas.org. 👏 @matthieu-haudiquet.bsky.social, Arpita Chakravarti & all authors! doi.org/10.1073/pnas...

Our nuclease-protease story is out! We explored a fascinating case of coevolution and modularity in prokaryotic immune systems: www.science.org/doi/10.1126/... Thanks to wonderful coauthors/collaborators/friends, the whole @doudna-lab.bsky.social and everyone at @innovativegenomics.bsky.social

So proud of @nitzantal.bsky.social 👏🏻such an inspiring and brilliant scientist!

An incredible story revealing a novel defense system that senses DNA shredding during phage infection — beautifully solved by @ostermanilya.bsky.social ! 🧬✨

Today in @nature.com , we highlight how a cousin of CRISPR-Cas10, mCpol, establishes an evolutionary trap in anti-phage immune systems. Check out @erinedoherty.bsky.social and my work from @doudna-lab.bsky.social lab here: www.nature.com/articles/s41...

Our story describing the Panoptes bacterial immune defense system is now finally peer-reviewed and published today! www.nature.com/articles/s41...

Effector-triggered immunity (ETI) indirectly detects pathogen effector activity on the host cell. Kevin Barthes,Tanita Wein and I examine how prokaryotic and eukaryotic viruses deploy similar effectors that activate ETI, underscoring its central role across the tree of life. tinyurl.com/mr3a3xh2

📢 New preprint alert! We designed synthetic proteins that can block bacterial immune systems, allowing phages + plasmids to overcome natural defenses. This could transform phage therapy + genetic engineering. Here’s what we found 🧵 Preprint🔗: www.biorxiv.org/content/10.1...

📢 Preprint out! Together with @reneechang.bsky.social @kranzuschlab.bsky.social and the amazing @soreklab.bsky.social, we explored viral sponges to map their diversity and function. Discovered huge diversity, including sponges that inhibit Pycsar & Type IV Thoeris! www.biorxiv.org/content/10.1...

Excited to share my PhD work in the @kranzuschlab.bsky.social, out now in Molecular Cell @cp-molcell.bsky.social We discover Acb4, a new family of viral sponges that sequesters nucleotide immune signals and defines molecular features that enable ligand specificity. www.cell.com/molecular-ce...

The beautiful, ever-expanding universe of viral proteins targeting nucleotide immune signals! Paper by @reneechang.bsky.social in @cp-molcell.bsky.social on a nucleotide sponge www.cell.com/molecular-ce... and preprint by @doudna-lab.bsky.social on viral nucleases www.biorxiv.org/content/10.1...

A beautiful and much-needed review on the role of nucleotides in immunity, congrats Dina!! 💫🧬

Amazing work led by @nitzantal.bsky.social👩🏼‍🔬, identifying new immune inhibitors using structural clues. So excited to see this out! 🧬💫