Westermann Lab
@westermannlab.bsky.social
200 followers 150 following 10 posts
Microbiota RNA Lab at the University of Würzburg and the Helmholtz Institute for RNA-based Infection Research. https://www.helmholtz-hiri.de/en/research/associated-scientists-alumni/teams/team/host-pathogen-microbiota-interactions/
Posts Media Videos Starter Packs
Reposted by Westermann Lab
cyanolab.bsky.social
How to search for unknown RNA-binding proteins? We did GradR in the cyanobacterium Synechocystis 6803. And now our paper „RAPDOR: Using Jensen-Shannon Distance for the computational analysis of complex proteomics dataset“ is finally out in Nature Communications, here: rdcu.be/eImcr .
RAPDOR: Using Jensen-Shannon Distance for the computational analysis of complex proteomics datasets
Nature Communications - RNA-binding proteins play key roles in post-transcriptional gene regulation. Here, Hemm et al. developed RAPDOR, a widely applicable tool based on Jensen-Shannon Distance...
rdcu.be
westermannlab.bsky.social
Congrats to Ann-Sophie Rüttiger who successfully defended her PhD this week! 🎓
She focused on global RNA-binding proteins in Bacteroides—bacteria lacking Hfq, ProQ, CsrA, Khp—culminating in the discovery of a post-transcriptional network governed by RbpB (www.nature.com/articles/s41467-024-55383-8).
Reposted by Westermann Lab
jorg-vogel-lab.bsky.social
Looking for a new approach to studying or eliminating phages? Check out our study introducing anti-phage ASOs (antisense oligos) out in @Nature today. nature.com/articles/s4158…
westermannlab.bsky.social
New preprint from the lab, in collaboration with Wenhan Zhu (U Vanderbilt): using dual RNA-seq during B. theta colonization of the host mucous layer, we identify IroR--an iron-response sRNA that tunes capsule expression and facilitates adaptation to iron limitation.
doi.org/10.1101/2025.09.08.672848
An RNA regulates iron homeostasis and host mucus colonization in Bacteroides thetaiotaomicron
Symbiotic bacteria in the human intestinal microbiota provide many pivotal functions to human health and occupy distinct biogeographic niches within the gut. Yet the molecular basis underlying niche-s...
doi.org
Reposted by Westermann Lab
Starting the meeting microbes and RNA- Gerhart on stage - lifetime achievement Lecture - congrats Gerhart!
Reposted by Westermann Lab
abaumler.bsky.social
A Salmonella T3SS-2 mutant grows fine in spleen macrophages, contradicting tissue culture dogma (PMID: 23236281). This observation was largely ignored, but adding certain carbon sources rescues growth in cultured macrophages, hinting that T3SS-2 may be doing something entirely different in vivo.
pescoll.bsky.social
New pre-print in the lab! Beautiful work by Francisco Garcia-Rodriguez in collab with @kamovalenz.bsky.social
and @joaquinbernal.bsky.social : when macrophages are provided with specific nutrients, Salmonella can bypass its requirement of the T3SS to replicate, a process that occurs within the SCV
biorxiv-microbiol.bsky.social
Provision of Preferred Nutrients to Macrophages Enables Salmonella to Replicate Intracellularly Without Relying on Type III Secretion Systems https://www.biorxiv.org/content/10.1101/2025.05.15.653970v1
Reposted by Westermann Lab
plosbiology.org
How are bacterial transport machineries regulated by external cues? @brochadolab.bsky.social &co identify environmental chemicals that regulate #transporter transcription, identifying the TF Rob as a key modulator of #EffluxPump expression in #Ecoli #AMR @plosbiology.org 🧪 plos.io/46pUM9Q
Left: Compound-promoter interaction network. Fifty-three significant compound-promoter interactions are shown as edges in a Sankey diagram connecting the compounds (left, source nodes) to the promoters (right, target nodes). Edge thickness represents mean Z-scores (n = 8), while node size represents the total number of interactions. Right: Proposed model for the molecular mechanism of caffeine-ciprofloxacin antagonism. Caffeine triggers expression of MicF small RNA in a Rob-dependent manner, which then binds to the 5′-UTR of ompF mRNA to inhibit and decrease OmpF protein levels. This ultimately prevents ciprofloxacin from entering the cell, resulting in caffeine-ciprofloxacin antagonism
Reposted by Westermann Lab
kroegerlab.bsky.social
New preprint! We characterise the small, regulatory RNA Arp which controls DNA uptake and twitching motilty in A. baumannii. Led by our Dr Fergal Hamrock @hamrockfergal.bsky.social and in collaboration with @westermannlab.bsky.social and Mike Gebhardt's lab!
biorxiv-microbiol.bsky.social
DNA uptake and twitching motility are controlled by the small RNA Arp through repression of pilin translation in Acinetobacter baumannii https://www.biorxiv.org/content/10.1101/2025.07.19.665661v1
westermannlab.bsky.social
Congrats to Gianluca Prezza (@gprezza.bsky.social) for reveiving the 2025 PhD Award from the Friends of the Helmholtz Centre for Infection Research (HZI)!👏 The award honours excellent PhD theses from the field of life sciences at HZI partner universities. His thesis focused Bacteroides' RNA biology.
helmholtzhzi.bsky.social
Beim gestrigen Festakt wurden zudem die HZI-Promotionspreise an Wenchao Li @ciim-hannover.bsky.social und @gprezza.bsky.social aus der Gruppe von @westermannlab.bsky.social @helmholtz-hiri.bsky.social verliehen. Wir gratulieren den beiden zu ihren ausgezeichneten Doktorarbeiten!
westermannlab.bsky.social
Thank you to all students and to the GSLS for this award! It means a lot to me! (-AW)
gslsuniwue.bsky.social
We proudly present the first-ever #GSLS Supervisor of the Year Award! 🏆
From 40 nominations, four top PIs were selected:
🥇 Gabriele Büchel
🥈 Alexander Westermann @westermannlab.bsky.social
🥉 Carmen Villmann & Matthias Gamer @gamerlab.bsky.social
Proud to have the best supervisors! @uni-wuerzburg.de
Reposted by Westermann Lab
nizet.bsky.social
𝔟α𝐜𝐓𝕖Ř𝒾ⒶĹ SHⓐ𝓹Ẹ 丂ħ𝓲ƒ𝓉ⒺⓇร 🦠

Ultra-sensitive RNA-seq and FISH show 𝘉𝘢𝘤𝘵𝘦𝘳𝘰𝘪𝘥𝘦𝘴 𝘵𝘩𝘦𝘵𝘢𝘪𝘰𝘵𝘢𝘰𝘮𝘪𝘤𝘳𝘰𝘯 cells adopt different shapes reflecting distinct gene expression profiles and metabolic specializations

A deliberate survival strategy for the ever-changing gut environment?

www.cell.com/cell-reports...
Reposted by Westermann Lab
uni-wuerzburg.de
Erfolg auf ganzer Linie: zwei Exzellenzcluster für Würzburg! 🥂🚀
Im Rahmen der #ExStra wird nicht nur der Quantenphysik-Cluster ctd.qmat weiterhin gefördert. Mit NUCLEATE, einem Forschungsprojekt zu Nukleinsäuren, kommt noch ein zweiter Cluster hinzu!
➡️ go.uniwue.de/xstra25
Freude über den Doppelerfolg: Zwei Würzburger Forschungsvorhaben haben sich im Exzellenzwettbewerb durchgesetzt und erhalten Mittel aus der begehrten Millionenförderung. Von links: Caroline Kisker (Würzburger Koordinatorin von NUCLEATE und Vizepräsidentin), Cynthia Sharma (Würzburger Speakerin von NUCLEATE), Ralph Claessen (Würzburger Speaker von ctd.qmat) und Universitätspräsident Paul Pauli (Bild: Jonas Blank / JMU)
Reposted by Westermann Lab
jorg-vogel-lab.bsky.social
And this only the beginning! I’m glad we did that collaboration with the Maric lab. ASOs for the people!
Reposted by Westermann Lab
jenshoer.bsky.social
I'm happy to share the first publication from my lab @hoerlab.bsky.social, now out in @narjournal.bsky.social! I take a look at the biology of RNA phages, focusing on how meta-omics methods are discovering new RNA phage families and bacterial defense strategies.

#PhageSky

doi.org/10.1093/nar/...
Advancing RNA phage biology through meta-omics
Abstract. Bacteriophages with RNA genomes are among the simplest biological entities on Earth. Since their discovery in the 1960s, they have been used as i
doi.org