Laura Álvaro-Llorente
@lauralvllo.bsky.social
71 followers 120 following 3 posts
PhD student at Evodynamics lab (Hospital Ramón y Cajal). New strategies against antibiotic resistant bacteria and AMR evolution in bacteria.
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Reposted by Laura Álvaro-Llorente
zaminiqbal.bsky.social
Delighted to see our paper studying the evolution of plasmids over the last 100 years, now out! Years of work by Adrian Cazares, also Nick Thomson @sangerinstitute.bsky.social - this version much improved over the preprint. Final version should be open access, apols.
Thread 1/n
Reposted by Laura Álvaro-Llorente
paularamiro.bsky.social
New paper alert! 🚨

Plasmids promote bacterial evolution through a copy number-driven increase in mutation rate.

We combine theory, simulations, experimental evolution, and bioinformatics to demonstrate that mutation rates scale with plasmid copy number.

Let's dive in! 🧵👇
Plasmids promote bacterial evolution through a copy number-driven increase in mutation rate
Plasmids are autonomously replicating DNA molecules that stably coexist with chromosomes in bacterial cells. These genetic elements drive horizontal gene transfer and play a fundamental role in bacter...
www.biorxiv.org
Reposted by Laura Álvaro-Llorente
aliciapcv.bsky.social
First of all, we recommend reading a complementary study led by Yannick Baffert and @sbigot.bsky.social, in which they use Tn-seq to study the genetic determinants of pOXA-48 in plasmid maintenance and conjugation. Really cool piece of work that reaches similar conclusions to ours!
2/14
Genetic determinants of pOXA-48 plasmid maintenance and propagation in Escherichia coli - Nature Communications
pOXA-48 plasmids have emerged as key vectors of carbapenem resistance within Enterobacteriaceae. In this study, the authors use a transposon sequencing (Tn-seq) approach to identify genetic determinan...
www.nature.com
Reposted by Laura Álvaro-Llorente
Reposted by Laura Álvaro-Llorente
fnobrega.bsky.social
Thrilled to see our Kiwa story out today! A membrane-associated supercomplex that senses infection and blocks replication and transcription.

www.cell.com/cell/fulltex...

Huge congratulations to Yi and Zhiying for bringing it home, to Thomas for starting us off, and to all the collaborators.
Kiwa is a membrane-embedded defense supercomplex activated at phage attachment sites
Zhang, Todeschini, and Wu et al. show that the bacterial defense system Kiwa senses phage attachment at the membrane and assembles a transmembrane complex that halts infection by blocking phage DNA re...
www.cell.com
Reposted by Laura Álvaro-Llorente
eugenpfeifer.bsky.social
Excited 🥳 to share our latest work on gut phages!
Big thanks to @epcrocha.bsky.social, Erick D, Camille d'H, @fplazaonate.bsky.social, Quentin LB, and all others involved for support and contributions! 🙌
Out in Cell Reports @cp-cellreports.bsky.social
doi.org/10.1016/j.ce...
Here's what we found 🤓
Reposted by Laura Álvaro-Llorente
zeynepbaharoglu.bsky.social
tRNA modification profiling reveals epitranscriptome regulatory networks in Pseudomonas aeruginosa 🦠👏High-throughput tRNA epitranscriptome profiling using mass spec on P. aeruginosa transposon insertion library and links with metabolic networks #microsky #rnasky doi.org/10.1093/nar/...
tRNA modification profiling reveals epitranscriptome regulatory networks in Pseudomonas aeruginosa
Abstract. Transfer RNA (tRNA) modifications have emerged as critical post-transcriptional regulators of gene expression affecting diverse biological and di
doi.org
Reposted by Laura Álvaro-Llorente
epcrocha.bsky.social
Here's our new broad review on the extended mobility of plasmids, about all mechanisms driving and limiting their transfer. From conjugation to conduction, phage-plasmids to hitchers, molecular to evolutionary dynamics, ecology to biotech. The state of affairs. 1/9 academic.oup.com/nar/article/...
graphical abstract of the article the extended mobility of plasmids
lauralvllo.bsky.social
Had an amazing time at #FEMS2025 last week, where I presented our latest findings on collateral sensitivity mediated by beta-lactamases ☯️ Big thanks to everyone who came by! So proud of my colleagues for their brilliant talks and posters ✨
lauralvllo.bsky.social
The perfect summer read is here! 👇🏽
paularamiro.bsky.social
New paper alert! 🚨

Plasmids promote bacterial evolution through a copy number-driven increase in mutation rate.

We combine theory, simulations, experimental evolution, and bioinformatics to demonstrate that mutation rates scale with plasmid copy number.

Let's dive in! 🧵👇
Plasmids promote bacterial evolution through a copy number-driven increase in mutation rate
Plasmids are autonomously replicating DNA molecules that stably coexist with chromosomes in bacterial cells. These genetic elements drive horizontal gene transfer and play a fundamental role in bacter...
www.biorxiv.org
lauralvllo.bsky.social
A must read paper! 👇
paularamiro.bsky.social
Curious about plasmid biology? Our latest paper is out now in Nature Communications! 🚨

doi.org/10.1038/s414...

We analyzed thousands of diverse bacterial plasmids to shed light for the first time on a key aspect of plasmid biology: plasmid copy number. 1/7 👇
Universal rules govern plasmid copy number - Nature Communications
Plasmids exhibit a broad range of sizes and copies per cell, and these two parameters appear to be negatively correlated. Here, Ramiro-Martínez et al. analyse the copy number of thousands of diverse b...
doi.org
Reposted by Laura Álvaro-Llorente
rafalmostowy.bsky.social
What determines who a phage can infect?

We tackled this question for temperate phages of Klebsiella — a bacterial pathogen — using a genome-wide association study (GWAS) and a massive protein testing effort.

👇 A thread!
Reposted by Laura Álvaro-Llorente
dbikard.bsky.social
The Eligo team did it again! We just shared on biorxiv the work we did towards the development of a CRISPR-Cas therapy targeting Shiga Toxin producing E. coli (STEC). www.biorxiv.org/content/10.1...
www.biorxiv.org