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Picotti Lab

@picottilab.bsky.social
119 followers 74 following 19 posts

The official Bluesky account of the Picotti lab at the IMSB at ETH Zürich

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Reposted by Picotti Lab
vivireber.bsky.social @vivireber.bsky.social · 03/07/2026
Out now: ATP-competitive inhibitors lock kinases in a pseudo-active conformation and modulate their non-catalytic functions. We show that these on-target, off-machanism effects can cause unexpected phenotypes and how to screen for these effects. Read more at link.springer.com/article/10.1...
link.springer.com
Paradoxical non-catalytic kinase functions are driven by inhibitor-induced displacement of autoinhibitory domains - Molecular Systems Biology
ATP-competitive kinase inhibitors represent one of the largest classes of targeted anti-cancer drugs. While their primary mechanism is to block catalytic activity, they can also trigger paradoxical ph...
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Reposted by Picotti Lab
Pedro Beltrao @pedrobeltrao.bsky.social · 25/05/2026
new lab preprint - Protein function prediction is a well established problem but proteins exist in different post-translationally modified forms. Here, @julianvangerwen.bsky.social built a ML model to predict the biological process regulated by individual phosphosites www.biorxiv.org/content/10.6...
biorxiv.org
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Picotti Lab @picottilab.bsky.social · 07/04/2026
Paola is deeply grateful to the Otto Naegeli Foundation, to her former and current lab members whose talent, curiosity, and dedication made this possible, to her collaborators, her current and past colleagues and administrative team @imsb-eth.bsky.social, and to @ethz.ch for the long-term support.
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Picotti Lab @picottilab.bsky.social · 07/04/2026
We are delighted to announce that Paola Picotti has been awarded the Otto Naegeli prize for biomedical research! otto-naegeli-preis.ch
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Picotti Lab @picottilab.bsky.social · 07/04/2026
The good news: @Thorben Schramm, postdoc who led this work, developed an open-source algorithm that allows you to detect and remove in-source fragments from your data, making ISF correction straightforward to implement. See our preprint here: doi.org/10.64898/202...
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Picotti Lab @picottilab.bsky.social · 07/04/2026
Our findings highlight the importance of detecting in-source fragments as part of standard data analysis workflows to avoid misinterpretation. With increasingly sensitive mass spectrometers detecting ever more m/z features, ISF is likely to become a growing concern.
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Picotti Lab @picottilab.bsky.social · 07/04/2026
The extent of ISF varied substantially between datasets, influenced by factors such as sample complexity, instrumentation, peptide sequence, and method parameters. In some cases, ISF accounted for more than 30% of peptide identifications.
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Picotti Lab @picottilab.bsky.social · 07/04/2026
In our latest study, we assessed the prevalence and impact of ISF on protein- and peptide-centric proteomics approaches, including immunopeptidomics, phosphoproteomics, and structural proteomics. Our analysis covered 38 datasets, both newly generated and previously published.
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Picotti Lab @picottilab.bsky.social · 07/04/2026
In mass spectrometry-based proteomics, peptides can fragment after chromatographic separation and before MS analysis. This phenomenon is called in-source fragmentation (ISF), and the resulting fragment peptides can be misinterpreted as biologically meaningful.
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Picotti Lab @picottilab.bsky.social · 17/03/2026
In collaboration with Virginie Redeker and Ronald Melki @cnrs-paris-saclay.bsky.social First author Tetiana Serdiuk is on the job market, please reach out if interested, any department would be lucky to have her!
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Picotti Lab @picottilab.bsky.social · 17/03/2026
Our study supports the notion that structural differences between alpha-synuclein fibrils play a role in the differences between PD, DLB and MSA. Also, differential interaction with the ubiquitin-proteasomal system may explain differential fibril accumulation in these diseases.
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Picotti Lab @picottilab.bsky.social · 17/03/2026
Finally, we monitored the cellular consequences of alpha-synuclein uptake. We again found strain-specific hits and validated a few of them using CRISPR-based overexpression with Adriano Aguzzi @UZH. These included three E3 ligases, which may be interesting potential drug targets for follow up work.
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Picotti Lab @picottilab.bsky.social · 17/03/2026
Next, we saw that each disease strain of alpha-synuclein fibrils had different sets of cellular proteins as potential interactors, including several associated with protein turnover.
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Picotti Lab @picottilab.bsky.social · 17/03/2026
In our three-part study, we first found that alpha-synuclein fibrils amplified from PD, DLB and MSA patient samples had different structures. This was true in vitro, within cell lysates, and within patient brain homogenates.
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Picotti Lab @picottilab.bsky.social · 17/03/2026
We studied the structural and cellular mechanisms of three synucleinopathies – Parkinson’s disease, Dementia with Lewy Bodies and Multiple Systems Atrophy. DOI: 10.1038/s44320-026-00199-5
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Picotti Lab @picottilab.bsky.social · 17/03/2026
Our paper on disease mechanisms in synucleinopathies, led by Tetiana Serdiuk, is out at Molecular Systems Biology. #proteomics #structuralproteomics #neurodegeneration #Parkinsons #alphasynuclein #structuralbiology #ethz @imsb-eth.bsky.social @molsystbiol.org
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Reposted by Picotti Lab
Microbiome Research Lab, ETH Zürich @microbiomeresearch.bsky.social · 23/01/2026
🚨We are hiring a Bioinformatician who will be embedded in our lab and work with members of the NCCR Microbiomes at ETH Zurich, as well as the Institute of Microbiology.🚨 nccr-microbiomes.ch jobs.ethz.ch/job/view/JOP...
jobs.ethz.ch
Bioinformatician in Microbiome Research
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Picotti Lab @picottilab.bsky.social · 13/01/2026
We hope this method and data will be useful to many. An excellent collaboration with the Karsten Weis, Tatjana Kleele and Robbie Loewith labs. @tatjanakleele.bsky.social
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Picotti Lab @picottilab.bsky.social · 13/01/2026
We profiled structural dynamics of hundreds of proteins from biomolecular condensates in stressed human cells, monitored structural changes in #RNA-binding sites and #intrinsically-disordered regions, and showed that we can identify a known #drug-target interaction, all inside of live cells.
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Picotti Lab @picottilab.bsky.social · 13/01/2026
We've developed in-cell LiP-MS to identify protein structural changes in live cells proteome-wide It captures changes in labile structures, like #biomolecular condensates
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Picotti Lab @picottilab.bsky.social · 13/01/2026
We’re delighted to report a global structural proteome analysis within living cells! doi.org/10.1038/s443... #proteomics #structuralproteomics #massspectrometry #structuralbiology #ethz @imsb-eth.bsky.social
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Picotti Lab @picottilab.bsky.social · 13/01/2026
We’ve taken a break, but @picottilab.bsky.social is now back on social media. Stay tuned for several new studies from the lab. #proteomics #massspectrometry #LiP-MS @imsb-eth.bsky.social, @ethzurich.bsky.social
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