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Karousis Lab

@karousislab.bsky.social
189 followers 148 following 40 posts

Group leader in Bern, Cell-free translation enthusiast enjoying teaching, once upon @RNAKook on x-Twitter scholar.google.com/citations?user=2… www.ekarousis.net

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Karousis Lab @karousislab.bsky.social · 24/09/2026
This paper is especially meaningful to me, as it represents one of the final projects from my group at the University of Bern.
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Karousis Lab @karousislab.bsky.social · 24/09/2026
We report a human cell-free translation screen that identified NT-2, a Fusarium mycotoxin that blocks human ribosomes. The surprise: NT-2 does binds the ribosome and pushes them into a dormant state. www.nature.com/articles/s42...
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Karousis Lab @karousislab.bsky.social · 24/02/2026
A very exciting NMD story 🤩Congratulations to the team!
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Korostelev Lab @korostelevlab.bsky.social · 30/11/2025
Using "in extracto cryo-EM", we visualize ribosomes in mammalian lysates, including RRL. "Hibernating" ribosomes carry an extended set of proteins that protect functional centers. These include elongation factor eEF2, LARP1 implicated in mTOR signaling, eIF5A etc. www.biorxiv.org/content/10.1...
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Green Lab JHMI @greenlab.bsky.social · 24/11/2025
Check out our latest work on how collided ribosomes activate the MAP3K ZAK! 💫 www.nature.com/articles/s41... A fun collaboration with @beckmannlab.bsky.social @doubleshuang.bsky.social
nature.com
ZAK activation at the collided ribosome - Nature
The kinase ZAK is activated at collided ribosomes to mediate the ribotoxic stress response.
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Karousis Lab @karousislab.bsky.social · 03/12/2025
Great work! It fits with our observations of a mycotoxin engaging ribosomes with SERBP1, apparently in a similar dormant state to the one that you observed. www.biorxiv.org/content/10.1...
biorxiv.org
A human cell-free translation screen identifies the NT-2 mycotoxin as a ribosomal peptidyl transferase inhibitor
Translation inhibitors are invaluable for probing ribosome function and therapeutic applications, but systematic discovery in human systems is limited by the lack of scalable, screening-compatible cel...
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Dan 🐟 C @zebrafish007.bsky.social · 02/12/2025
Exciting new #Zebrafish research from the #WeinsteinLab, led by Jong Park! “Specialized gas-exchange endothelium of the zebrafish gill” — www.biorxiv.org/content/10.6... Amazing to see red blood cells moving through the gills! Don’t forget to check out the supplemental movies ;-)
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Karousis Lab @karousislab.bsky.social · 02/11/2025
Before a job interview 😅
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Karousis Lab @karousislab.bsky.social · 29/10/2025
First time it happened to my lecture I thought it's an earthquake (Greek in Switzerland)
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Karousis Lab @karousislab.bsky.social · 13/10/2025
#RNASky #BiologySky #CryoEM
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Karousis Lab @karousislab.bsky.social · 13/10/2025
This work was possible thanks with the Cryo-EM hub at the @ethz.ch and the BSF screening facility at the EPFL. @nccr-rna-disease.bsky.social @mcid-unibe.bsky.social
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Karousis Lab @karousislab.bsky.social · 13/10/2025
🧬 NT-2 binds at 60S PTC where peptide bonds form and stabilizes an inactive SERBP1-bound state only when living cells are treated, establishing a direct structural link between a small-molecule inhibitor and ribosome dormancy. #translation #cryoEM #biochemistry
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Karousis Lab @karousislab.bsky.social · 13/10/2025
💡 We built a quantitative human-based cell-free translation platform that tests thousands of reactions in parallel, directly measuring protein synthesis while bypassing cellular toxicity. #quantitativebiology #RNA #ribosome #cellfree #drugdiscovery
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Karousis Lab @karousislab.bsky.social · 13/10/2025
🚀 New preprint! We used a human cell-free translation screen (~28 000 compounds) to discover NT-2, a #Fusarium -derived #mycotoxin that blocks human ribosomes. #Cryo-EM at 1.72 Å reveals a link between chemical inhibition and ribosome dormancy. www.biorxiv.org/content/10.1...
biorxiv.org
A human cell-free translation screen identifies the NT-2 mycotoxin as a ribosomal peptidyl transferase inhibitor
Translation inhibitors are invaluable for probing ribosome function and therapeutic applications, but systematic discovery in human systems is limited by the lack of scalable, screening-compatible cel...
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Karousis Lab @karousislab.bsky.social · 30/09/2025
It was a joy hosting @mandymuller.bsky.social in Bern!
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Paradisi Research @paradisireslab.bsky.social · 20/09/2025
Nature Reviews Methods Primers (2025): "Flow biocatalysis" paradisiresearch.com/research-highl…
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Karousis Lab @karousislab.bsky.social · 20/09/2025
Very exciting and nicely illustrated! Congratulations!
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Cell Reports @cp-cellreports.bsky.social · 07/09/2025
Polysomes and mRNA control the biophysical properties of the eukaryotic cytoplasm
dlvr.it
Polysomes and mRNA control the biophysical properties of the eukaryotic cytoplasm
Gade et al. report that polysomes and mRNA levels impact the biophysical properties of the cytoplasm. Using passive rheology probes and single-particle tracking, they demonstrate that intracellular diffusion is enhanced when polysomes are disassembled or when mRNA levels are reduced in eukaryotic cells.
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Karousis Lab @karousislab.bsky.social · 11/09/2025
*️⃣ Step-by-step STAR protocol for Cell-free translation and mRNA decay *️⃣ What to do (and what not to do 😅) guide based on our work on Nsp1 published in @cp-cellreports.bsky.social. www.sciencedirect.com/science/arti... @unibe.ch @mcid-unibe.bsky.social @nccr-rna-disease.bsky.social @snf-fns.ch
sciencedirect.com
Protocol for monitoring mRNA translation and degradation in human cell-free lysates
Cell-free translation is a powerful tool for studying protein synthesis. Here, we present a protocol for monitoring mRNA translation and degradation u…
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Karousis Lab @karousislab.bsky.social · 30/08/2025
Excellent science, impeccable organisation and breathtaking views in and out the #RNA turnover #BiochemEvent in Brighton, UK 🌊🧬 @biochemsoc.bsky.social
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Vikram Agarwal @vagar.bsky.social · 25/07/2025
Very excited that our most significant work, a collaboration w/ Dr. Can Cenik at UT Austin on translational gene regulation, was finally published in Nature Biotechnology in a dual set of studies: Paper 1 -- an AI model trained to predict translation rates from mRNA sequences: rdcu.be/exN1l
url.de.m.mimecastprotect.com
Predicting the translation efficiency of messenger RNA in mammalian cells
Nature Biotechnology - A deep convolutional neural network model predicts the influence of the full-length mRNA sequence on translation efficiency.
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Nature Biotechnology @natbiotech.nature.com · 25/07/2025
Translation efficiency covariation identifies conserved coordination patterns across cell types go.nature.com/3TXvmZy
go.nature.com
Translation efficiency covariation identifies conserved coordination patterns across cell types - Nature Biotechnology
Matched ribosome profiling and RNA sequencing data quantify translation efficiency patterns across 140 human and mouse cell lines.
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Karousis Lab @karousislab.bsky.social · 24/07/2025
🌊 Potential lab logo 🌊
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The BanLab @thebanlab.bsky.social · 12/07/2025
New paper out in Mol Cell, where we show how N-myristolytransferases lipidate proteins on the translating ribosome! Continuing our successful collaboration with DeuerlingLab @uni-konstanz.de & Shu-ou Chan @caltech.edu @snsf.ch @ethz.ch www.cell.com/molecular-ce...
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Eugene Valkov @eugenevalkov.bsky.social · 13/07/2025
Happy to share the latest work on a bacterial protein that inhibits human mRNA decay machinery, in collaboration with @smlea.bsky.social #RNAsky www.nature.com/articles/s41... Intracellular pathogen effector reprograms host gene expression by inhibiting mRNA decay | Nature Communications
nature.com
Intracellular pathogen effector reprograms host gene expression by inhibiting mRNA decay - Nature Communications
Intracellular pathogens hijack host gene expression to subvert cellular processes. Here, the authors show that Legionella pneumophila’s PieF effector inhibits the human CCR4-NOT deadenylation machiner...
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Karousis Lab @karousislab.bsky.social · 04/07/2025
What if I told you, there is a way to pause the time?
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Karousis Lab @karousislab.bsky.social · 19/06/2025
Great read from Akis and colleagues! @akispapantonis.bsky.social
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Science Magazine @science.org · 19/06/2025
A protein produced by the pathogenic bacteria Helicobacter pylori can block amyloid proteins from clustering, new #ScienceAdvances research finds.
scim.ag
Helicobacter pylori CagA protein is a potent and broad-spectrum amyloid inhibitor
Helicobacter pylori CagA protein strongly inhibits functional and pathogenic amyloid fibril formation in both bacteria and humans.
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Karousis Lab @karousislab.bsky.social · 28/05/2025
Our method paper to produce efficient cell-free translation lysates from diverse human cell types is out 🎉 www.jbc.org/article/S002... @unibe.ch @mcid-unibe.bsky.social @muehlemann.bsky.social @nickkouvelas.bsky.social
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Karousis Lab @karousislab.bsky.social · 23/05/2025
Thanks a lot, Jonathan!
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Karousis Lab @karousislab.bsky.social · 23/05/2025
Winning the lecturer of the year award from the #Biology department of @unibe.ch definitely made my day 🤩🎉 (after a tough week, otherwise 😅). UniBern has been very supportive and generous in providing excellent teaching courses so KUDOS to them!
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Karousis Lab @karousislab.bsky.social · 08/05/2025
I am very excited and grateful for the opportunity to present our work and exchange ideas with the research community at LMU Munich hosted by Jonathan Bohlen! @jonathanbohlen.bsky.social @jonathanbohlen.bsky.social @unibe.ch @mcid-unibe.bsky.social @nccr-rna-disease.bsky.social
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Karousis Lab @karousislab.bsky.social · 06/04/2025
Lessons on how to breathe 🌳🇨🇭 #Biochemistry #academicteaching @unibe.ch
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Universität Bern @unibe.ch · 01/04/2025
🦠😷 Researchers at the #unibern have gained new insights into an early mechanism of #coronavirus infection. 👉 mediarelations.unibe.ch/media_releas... @karousislab.bsky.social @nccr-rna-disease.bsky.social @mcid-unibe.bsky.social Image: © Adrian Bothe
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Karousis Lab @karousislab.bsky.social · 30/03/2025
I think I study more #Biochemistry on semester weekends than my students 😅 Gluconeogenesis feat. Greek language lessons 🍭
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Cell Reports @cp-cellreports.bsky.social · 29/03/2025
The impact of Coronavirus Nsp1 on host mRNA degradation is independent of its role in translation inhibition
dlvr.it
The impact of Coronavirus Nsp1 on host mRNA degradation is independent of its role in translation inhibition
Bäumlin et al. investigate the roles of coronavirus Nsp1 in translation inhibition and mRNA degradation using a human cell-free translation system. They demonstrate that SARS-CoV-2 Nsp1 mediates mRNA degradation independently of translation, whereas MERS-CoV Nsp1 inhibits translation without degradation, revealing distinct mechanisms and co-evolutionary protection of viral mRNAs.
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Nature Portfolio @natureportfolio.nature.com · 29/03/2025
A Perspective in Nature Reviews Neuroscience focuses on neural resonance theory in music, which summarizes how the dynamics of fundamental neural mechanisms can explain various aspects of music perception and performance. go.nature.com/3DXLLJ2 🔒
This is figure 2, which shows the predictions of neural resonance theory.
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Karousis Lab @karousislab.bsky.social · 28/03/2025
That's amazing, and even more amazing that this gadget actually works 😅
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Karousis Lab @karousislab.bsky.social · 28/03/2025
Our latest research on #Coronavirus Nsp1 found its home (and a new name) at @cp-cellreports.bsky.social www.cell.com/cell-reports... Thankful to the first (dream) team of my lab and funding for making this happen. @nccr-rna-disease.bsky.social @mcid-unibe.bsky.social @unibe.ch
cell.com
The impact of Coronavirus Nsp1 on host mRNA degradation is independent of its role in translation inhibition
Bäumlin et al. investigate the roles of coronavirus Nsp1 in translation inhibition and mRNA degradation using a human cell-free translation system. They demonstrate that SARS-CoV-2 Nsp1 mediates mRNA ...
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Karousis Lab @karousislab.bsky.social · 25/02/2025
www.cell.com/cell-reports...
cell.com
A conserved class of viral RNA structures regulates translation reinitiation through dynamic ribosome interactions
Certain viruses with bicistronic mRNAs use reinitiation to translate the downstream open reading frame. Sherlock et al. use bioinformatics to find new examples of RNA structures that mediate reinitiat...
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erzbergerlab.bsky.social @erzbergerlab.bsky.social · 22/02/2025
Cellular responses to RNA damage: Cell www.cell.com/cell/fulltex...
cell.com
Cellular responses to RNA damage
RNA plays a central role in protein biosynthesis and performs diverse regulatory and catalytic functions, making it essential for all processes of life. Like DNA, RNA is constantly subjected to damage...
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Magdalena Skipper @magdalenaskipper.bsky.social · 17/02/2025
Nature’s guide to the best AI tools for research - some excel at coding, whereas others are better for synthesizing information; a tool for every occasion? 🧪 @nature.com @natureportfolio.nature.com www.nature.com/articles/d41...
nature.com
What are the best AI tools for research? Nature’s guide
There are many large language models to choose from; some excel at coding, whereas others are better for synthesizing information.
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Karousis Lab @karousislab.bsky.social · 07/02/2025
Aren't any protective constitutional mechanisms to stop this dangerous person and his friends from acting up?
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erzbergerlab.bsky.social @erzbergerlab.bsky.social · 04/02/2025
A conserved class of viral RNA structures regulates translation reinitiation through dynamic ribosome interactions: Cell Reports www.cell.com/cell-reports...
cell.com
A conserved class of viral RNA structures regulates translation reinitiation through dynamic ribosome interactions
Certain viruses with bicistronic mRNAs use reinitiation to translate the downstream open reading frame. Sherlock et al. use bioinformatics to find new examples of RNA structures that mediate reinitiat...
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Karousis Lab @karousislab.bsky.social · 02/02/2025
Impressive as always 🙌 @marvintanenbaum.bsky.social
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Megan, PhD @drmeganphd.bsky.social · 28/01/2025
Read my review!
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Nature Reviews Molecular Cell Biology @natrevmcb.nature.com · 30/01/2025
bit.ly
A guide to the biogenesis and functions of endogenous small non-coding RNAs in animals
Nature Reviews Molecular Cell Biology, Published online: 24 January 2025; doi:10.1038/s41580-024-00818-9Many new small RNA species and their derived fragments have been recently identified in animals. This Review discusses the biogenesis and functions of…
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Karousis Lab @karousislab.bsky.social · 29/01/2025
Kandersteg has been the hub for the swiss @nccr-rna-disease.bsky.social RNA for most of the last 9 years of workshops. Collaborations and friendships were made, posters were drugged on ice streets, and plans and dreams were made on frozen slopes. Those #RNA days in Kandersteg have left their mark.
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Altmetric @altmetric.com · 18/11/2024
We strongly suggest that academic publishers and other platforms that host research rapidly implement a Share to Bluesky button for their articles. Here's how: docs.bsky.app/docs/advance... #AcademicSky #HigherEd #Altmetrics
docs.bsky.app
Action Intent Links | Bluesky
Authors, websites, and apps can use action intent links to implement "Share on Bluesky" buttons, or similar in-app actions. Logged-in users will be directed to the corresponding action view in the Blu...
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Sorek Lab @soreklab.bsky.social · 23/01/2025
Our paper out @CellCellPress: Structure guided discovery of viral proteins that inhibit host immunity Congrats Erez Yirmiya, Azita Leavitt, Gil Amitai, our collaborators at the Kranzusch lab, and coauthors A 🧵 1/10 www.cell.com/cell/abstrac...
cell.com
Structure-guided discovery of viral proteins that inhibit host immunity
Large-scale, structure-guided computational pipeline sifts through millions of phage proteins to identify those that bind and antagonize host immune proteins. Detected proteins are shown to inhibit no...
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