Our ms on re-sampling 4 years apart vibrio phage in natural environments is now out with some improvements. First, clearer evidence of cryptic population dynamics between phage and vibrio, presumably because of genetic diversity. www.nature.com/articles/s41...

My team at @cbitoulouse.bsky.social is recruiting a postdoc #bioinformatics with solid experience in metagenomic analyses. Interest in evolution, ecology & MGEs is important. The offer stands until the perfect candidate is found, and it could be you 🫵 🔁 🙏 #microSky #phagesky #UTIsky @cnrs.fr

Our new paper is out in @narjournal.bsky.social We show that natural transformation enables bacteria to shuffle integron cassettes, boosting their phenotypic diversity. academic.oup.com/nar/article/... 1/5

Bacterial natural transformation drives cassette shuffling and simplifies recombination in chromosomal integrons

Abstract. Integrons act as biobanks of gene cassettes conferring functions crucial for bacterial defense, including protection against phages and antibioti

academic.oup.com

Exciting news!! Our latest paper is out in Nat. Microbiol. @natmicrobiol.nature.com We show that a sub-lineage of 7th pandemic V. cholerae has acquired mobile genetic elements packed with phage defense systems—rendering it multi-phage resistant 😳 ..... 1/3 www.nature.com/articles/s41...

West African–South American pandemic Vibrio cholerae encodes multiple distinct phage defence systems - Nature Microbiology

The West African–South American lineage of Vibrio cholerae contains multiple distinct anti-phage defence systems that provide resistance to various phage families, including vibriophage ICP1, a key pr...

nature.com

www.pasteur.fr/fr/journal-r...

Les bactéries utilisent les mêmes outils pour résister aux antibiotiques et aux virus

La résistance des bactéries aux antibiotiques est un phénomène qui s’accentue, créant un problème de santé publique majeur. Parmi les possibles alternatives aux antibiotiques, l’utilisation de virus i...

pasteur.fr

🧫🦠🔬🧬 @science.org Sedentary chromosomal integrons as biobanks of bacterial antiphage defense systems | Science www.science.org/doi/10.1126/... @baptistedarracq.bsky.social @eloilittner.bsky.social @celineloot.bsky.social @epcrocha.bsky.social et al. #microbiology #phage #immunity #phagesky #MicroSky

Sedentary chromosomal integrons as biobanks of bacterial antiphage defense systems

Integrons are genetic systems that drive bacterial adaptation by acquiring, expressing, and shuffling gene cassettes. While mobile integrons are well known for spreading antibiotic resistance genes, t...

science.org

WARNING: We have a postdoc position to work on the follow-up of this work. If you're interested, the deadline is tomorrow !!! (but I'll wait a few more days for interested candidates). research.pasteur.fr/fr/job/postd...

At least 10% of the V. cholerae integron cassettes have novel antiphage activities (see below). Considering that there are 25,000 distinct cassettes of unknown function, integrons constitute an extraordinary and almost inexhaustible reservoir of antiphage functions!

Sedentary chromosomal integrons as biobanks of bacterial antiphage defense systems

Integrons are genetic systems that drive bacterial adaptation by acquiring, expressing, and shuffling gene cassettes. While mobile integrons are well known for spreading antibiotic resistance genes, t...

science.org

🧪 Finally out after peer review, our work showing that "Mobile #Integrons carry Phage Defense Systems" is now published in Science 🎉 Short 🧵 www.science.org/doi/10.1126/...

Mobile integrons encode phage defense systems

Integrons are bacterial genetic elements that capture, stockpile, and modulate the expression of genes encoded in integron cassettes. Mobile integrons (MIs) are borne on plasmids, acting as a vehicle ...

science.org

White smoke, we have a new pope and also 16 new anti-phages systems in sedentary integrons (SCIs) ! In collaboration with the Rocha lab, we show in our new paper that cassettes of these large platforms encode many known anti-phage defenses, and uncovered 16 new ones. www.science.org/doi/10.1126/...

Sedentary chromosomal integrons as biobanks of bacterial antiphage defense systems

Integrons are genetic systems that drive bacterial adaptation by acquiring, expressing, and shuffling gene cassettes. While mobile integrons are well known for spreading antibiotic resistance genes, t...

science.org

And its out! Last work of the lab: "Evolutionary Constraints on RNA Polymerase Gene Positioning in the Genome of Fast-Growing Bacteria." We show how the genomic location of RNA polymerase impacts cell physiology. www.biorxiv.org/cgi/content/...

Evolutionary Constraints on RNA Polymerase Gene Positioning in the Genome of Fast-Growing Bacteria..

The influence of gene order within the chromosome on cellular homeostasis and genome evolution remains unclear. Bacterial chromosomes are structured along the replication origin ( oriC )-terminus ( te...

biorxiv.org

👋 Hi antiphage defense community, we are soon releasing an update of DefenseFinder. We are doing our best to include all the great discoveries from the community, but with so much going on we might miss things. Please answer wt preprints/papers with new systems or mail/git them to us. 🙏

Very happy to see Institut Pasteur on Bluesky !!!

Institut Pasteur | 130 years of biomedical research@pasteur.fr · 2y ago

Welcome to the official Bluesky page of the Institut Pasteur! 🔬 Explore with us the frontiers of biomedical research 🧪 Follow us to uncover groundbreaking discoveries 💡 Share knowledge for global health 🌍 Join a community passionate about progress and open science.

Welcome to the official Bluesky page of the Institut Pasteur! 🔬 Explore with us the frontiers of biomedical research 🧪 Follow us to uncover groundbreaking discoveries 💡 Share knowledge for global health 🌍 Join a community passionate about progress and open science.

nature.com/articles/s41... a collaborative success of CelineLoot (+ the rest of the PGB lab) with @epcrocha.bsky.social and the Biomics hub from the Pasteur

Check out our last work with Celine Loot, Ole Skovgaard, @amazeld.bsky.social and @sanmillan.bsky.social. We have deleted the Superintegron from V. cholerae! A long-awaited feat in the field!! Despite losing 3% of the genome, the strain remains phenotipically identical across Manu conditions!! 😵

Chromosomal Integrons are Genetically and Functionally Isolated Units of Genomes

bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution

biorxiv.org