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Sascha Martens

@martenslab.bsky.social
589 followers 128 following 4 posts

Biochemist and cell biologist working on autophagy at the Max Perutz Labs, University of Vienna

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Reposted by Sascha Martens
Jim Hurley @jimhurley.bsky.social · 06/09/2026
The ULK1 complex triggers autophagy on membranes, but with no typical membrane binding domains, how does it get there? See the answer in a brilliant collective effort out now in Science Advances: www.science.org/doi/10.1126/....
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Sascha Martens @martenslab.bsky.social · 03/09/2026
So well deserved Elias!!! Congrats!
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Max Perutz Labs Vienna @maxperutzlabs.ac.at · 02/09/2026
🚨 Out now! Special delivery for autophagy: A new @natcomms.nature.com study from the Martens lab, led by first author Elisabeth Holzer, reveals how ATG2A and ATG8-like proteins deliver key lipids to build and expand autophagosomes ➡️ tinyurl.com/ycx9v759 @univie.ac.at @meduniwien.ac.at
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Nature Reviews Molecular Cell Biology @natrevmcb.nature.com · 14/08/2026
New Online! Regulation and roles of mammalian mitophagy
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Regulation and roles of mammalian mitophagy
Nature Reviews Molecular Cell Biology, Published online: 14 August 2026; doi:10.1038/s41580-026-01012-9Mitophagy contributes to cellular homeostasis through the recycling of damaged mitochondria and precise control of mitochondrial numbers. In this Review, Martens and Ganley summarize the molecular mechanisms involved in mitophagy pathways, mitophagy regulation and roles in disease.
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Biomed News @biomednews.bsky.social · 14/07/2026
Read our latest testimonial from @gzaffagnini.bsky.social from the @unicologne.bsky.social. He has been curating his report on cell biology of #oocytes since June 2024 and recently released his 100th issue. You can subscribe to his report by going to biomed.news/bims-cebooc
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Florey Lab @floreylab.bsky.social · 10/07/2026
Please check out our new preprint! We find an unexpected role for #CASM in regulating p62 mediated activation of the KEAP1/NRF2 pathway to initiate a cytoprotective antioxidant transcriptional response. More functions for #CASM in responding to lysosome stress. www.biorxiv.org/content/10.6... 1/2
biorxiv.org
CASM regulates p62/KEAP1/NRF2 antioxidant responses to lysosome damage
Effective lysosome function is essential for health, and declines with ageing and disease. Upon lysosome damage, cells mount a complex stress response to restore homeostasis. Membrane ATG8ylation play...
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Claudine Kraft's Lab @kraftlabfr.bsky.social · 29/06/2026
First ERC Synergy meeting with @martenslab.bsky.social and @jimhurley.bsky.social in Vienna, great start! Thanks Sascha for hosting 🙏 @erc.europa.eu
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Jim Hurley @jimhurley.bsky.social · 29/06/2026
There is so much inspiring work going on in the Kraft and Martens labs. It was wonderful spending time with and getting to know the talented students and postdocs in your groups.
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Stella Hurtley @smhsci.bsky.social · 26/06/2026
Take a look at this new paper in @science.org Reversible suppression of autophagy in a mouse model reveals neuronal resilience | Science www.science.org/doi/10.1126/...
science.org
Reversible suppression of autophagy in a mouse model reveals neuronal resilience
Impairments in intracellular quality-control mechanisms, including autophagy, affect neuronal integrity and function. Despite numerous studies aimed at slowing neuronal deterioration, it remains uncle...
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bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 10/06/2026
Structural Mechanism and Cellular Restriction of Tau Seeding from Endolysosomes www.biorxiv.org/content/10.64898/20…
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Reese Richardson @reeserichardson.bsky.social · 05/06/2026
The Thermo Fisher situation keeps getting worse. We've now collected 450+ problematic images presented as verification data in TF's antibody catalog. This includes: 🖌️ Dozens more images with duplications or painting 🖨️ Hundreds of blots that all share the same background (behold slideshow below)
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Reese Richardson @reeserichardson.bsky.social · 28/05/2026
TL;DR: We've identified more than 100 cases of apparent manipulation in Thermo Fisher Scientific's antibody verification data. @sholtodavid.bsky.social @johanduchene.bsky.social reeserichardson.blog/2026/05/28/h...
reeserichardson.blog
How much of Thermo Fisher’s antibody data has been manipulated?
We’ve documented more than 100 instances of apparent data manipulation in Thermo’s catalog
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Gregor Mendel Institute of Molecular Plant Biology @gmivienna.bsky.social · 28/05/2026
New study published in Science! Led by @thevirusmc.bsky.social and @plantophagy.bsky.social, former group leader at the GMI of the @oeaw.bsky.social, the researchers set out to understand how autophagy – the cell’s clean-up and recycling system – mediates plant immune response to viral infection.
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Victoria Deneke @vdeneke.bsky.social · 22/05/2026
We hope this work SPARKs your curiosity (and your feedback)! ✨ www.biorxiv.org/content/10.6...
biorxiv.org
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Reese Richardson @reeserichardson.bsky.social · 21/05/2026
@johanduchene.bsky.social @sholtodavid.bsky.social Spent the last hour looking, found ten more apparently manipulated Western blots in Thermo Fisher's antibody verification data (across eight different catalogued products). Thread below. www.thermofisher.com/antibody/pro...
Apparent manipulation in the antibody verification data in Thermo Fisher's online catalog
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Sascha Martens @martenslab.bsky.social · 18/05/2026
A new preprint from the lab showing how Atg1 regulates the BLTP Atg2. This study was spearheaded by Sonja Achleitner and Susanna Tulli, involving a fantastic collaboration with @ainaraclaveras.bsky.social and Gerhard Hummer. @maxperutzlabs.ac.at @viennabiocenter.bsky.social @maxplanck.bsky.social
biorxiv.org
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Claudine Kraft's Lab @kraftlabfr.bsky.social · 14/04/2026
🚨 Paper Alert! In this new work published in @jcellsci.bsky.social we shift our focus on MTFR1L and the feedback loop linking mitochondrial fission, mitophagy and apoptosis. MTFR1L emerges as a critical coordinator of the fission and autophagy machinery. 🔗Find the paper here: doi.org/10.1242/jcs....
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Vienna BioCenter Scientific Training @vbcscitraining.bsky.social · 30/03/2026
Exciting job offer: PhD Program Manager. Lead recruitment, support PhD candidates, and shape doctoral training at a top international life sciences campus. ow.ly/3YkN50YAuGM Institute of Molecular Biotechnology, Max Perutz Labs Vienna, IMP, Gregor Mendel Institute of Molecular Plant Biology
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Journal of Cell Biology @jcb.org · 15/03/2026
In this Perspective, North, @doroteaartscience.bsky.social, Shoemaker et al. highlight the rapidly expanding role of LC3-interacting regions in autophagy. rupress.org/jcb/article/... 📕 Part of #Autophagy 2026 👉 rupress.org/jcb/collecti... #GRC
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Aligning Science Across Parkinson's @asapresearch.parkinsonsroadmap.org · 12/03/2026
📢 New #preprint from CRN Team Hurley! The team uncovers the mechanism of ATG2A-mediated lipid transport 🧬 Structural modeling and simulations show that N-terminal helices gate lipid transfer, and a designed mutant transfers lipids three times faster in vitro. 🔗 bit.ly/4rHuWpr
Rearrangement of amphipathic helices enables lipid uptake at ATG2A N-terminus.
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Aligning Science Across Parkinson's @asapresearch.parkinsonsroadmap.org · 05/03/2026
📢 New #preprint from CRN Team Hurley! The team uncovers the mechanism of ATG2A-mediated lipid transport 🧪 Structural modeling and simulations show that N-terminal helices gate lipid transfer, and a designed mutant transfers lipids three times faster in vitro. 🔗 bit.ly/3ZVAxw6
Rearrangement of amphipathic helices enables lipid uptake at ATG2A N-terminus.
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Yasin Dagdas @plantophagy.bsky.social · 23/02/2026
Really happy to see this one out: www.sciencedirect.com/science/arti... Alibek's drive & great coll w/ friends @gekaragoz.bsky.social & E. Hallacli resulted in a cool story that starts with our beloved #Marchantia and ends with iPSC-derived neurons 🤩🤪 A short 🧵
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Bernd Bauer @berndbauer.bsky.social · 14/02/2026
Why do pathological protein aggregates persist in cells and how can we overcome this? In our new preprint, we show that Tau aggregates fail to initiate selective autophagy and that their autophagic degradation can be restored. #Autophagy #Tau #Proteostasis Out now 👇 www.biorxiv.org/content/10.6...
biorxiv.org
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IMP @impvienna.bsky.social · 21/01/2026
More: www.imp.ac.at/news/article...
imp.ac.at
From one complex to many: Rethinking the BLOC/BORC system
Two protein complexes that regulate intracellular transport and lysosome positioning were long thought to exist as single, well-defined entities. New structural insights now come from the groups of Da...
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Wilfling Lab @wilflinglab.bsky.social · 20/01/2026
LLOMe has long been used to study lysosomal damage, yet how it works has remained a mystery. Using cryo-electron tomography, we show it forms amyloid structures inside lysosomes that mechanically rupture membranes – revealing a new paradigm for lysosomal failure. 🔗 doi.org/10.64898/202... #CryoET
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Wilfling Lab @wilflinglab.bsky.social · 13/01/2026
We are excited to share our new preprint which is now available to read on biorXiv: doi.org/10.64898/202... 🎉🎉🎉
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Yasin Dagdas @plantophagy.bsky.social · 10/01/2026
If you are interested in #ubiquitin related topics (Who isn’t???) & looking for a friendly and collegial meeting where you can talk to anyone & everyone, this is your meeting!
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SFB Targeted Protein Degradation @sfb-tpd-vienna.bsky.social · 10/01/2026
Join us for the #Ubiquitin & Friends Symposium 2026, April 29-30, in Vienna! Fantastic guest speakers👇 & many slots for talks from abstracts, flash-talks & posters. Lots of opportunities to network. Register now to save your spot! ➡️ www.protein-degradation.org/symposium/ #ubfriends2026
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Aligning Science Across Parkinson's @asapresearch.parkinsonsroadmap.org · 09/01/2026
CRN Team Hurley developed AI-directed voxel extraction (AIVE), a segmentation strategy that refines AI-based organelle boundary predictions. Using AIVE, they identified a previously unknown mitochondrial contact termed the mitochondrial intrusion 🧪 🔗 Read the #publication: bit.ly/4qeZiOY
The compositional analysis of membranes in bulk cellular volumes via AIVE. (A–D)
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The EMBO Journal @embojournal.org · 05/01/2026
The ATG8 E3-like ligases sense lysosomal damage and initiate ESCRT-mediated membrane repair Dale Corkery, Yao-Wen Wu et al link.springer.com/article/10.1...
link.springer.com
The ATG8 E3-like ligases sense lysosomal damage and initiate ESCRT-mediated membrane repair - The EMBO Journal
After damage from pathogenic, chemical or physical stress, endolysosomal membranes are repaired and resealed by the endosomal sorting complex required for transport (ESCRT) machinery, but how this mem...
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Sam Lewis, Ph.D. @samlewis.bsky.social · 18/12/2025
⚡️Mitochondria make ATP, the energy that powers life. But in neurons, with axons up to a meter long, how do these tiny power plants stay functional in the right places? We went looking. 1/n www.biorxiv.org/content/10.6...
biorxiv.org
Self-renewal of neuronal mitochondria through asymmetric division
Mitochondrial ATP production is essential for life. Mitochondrial function depends on the spatio-temporal coordination of nuclear and mitochondrial genome expression, yet how this coordination occurs ...
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Yasin Dagdas @plantophagy.bsky.social · 01/12/2025
Glad to have this finally published: www.sciencedirect.com/science/arti... lots of new data since the #preprint. If you are into selective #autophagy, #evolution, #proteostasis Please have a look!
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Silvia Ramundo @sramundo.bsky.social · 29/11/2025
There are a couple of empty chairs at our table — want to sit with us? Reach out to me or any lab member www.oeaw.ac.at/gmi/research... We’ll be hiring two postdocs in 2026. We’re excited about ambitious and creative ideas and are committed to supporting future group leaders 1/2
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Max Perutz Labs Vienna @maxperutzlabs.ac.at · 12/11/2025
✨ Passionate about cell biology or biochemistry? Join the Martens Lab as a postdoc to uncover why autophagy stalls at disease-linked protein aggregates - and how to restart it 🧠 Apply here ➡️ tinyurl.com/24dcrcke
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Elias Adriaenssens @elias-adriaenssens.bsky.social · 12/11/2025
Join us later today 👇
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IMP @impvienna.bsky.social · 10/11/2025
🌍Open call: Junior Group Leader positions! Join a world-class biomedical research institute at the heart of the Vienna BioCenter, where curiosity drives discovery. Lead your own lab, pursue bold ideas, and shape the future of science at the IMP: www.imp.ac.at/career/open-...
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Dorotea - Art&Science @doroteaartscience.bsky.social · 10/11/2025
New pre-print out on the stepwise recruitment to membrane of the #autophagy ULK1 complex from the @mito911.bsky.social from @martenslab.bsky.social Ian Ganley @hummerlab.bsky.social @jimhurley.bsky.social labs with the generous support of @asapresearch.parkinsonsroadmap.org doi.org/10.1101/2025...
doi.org
Reconstitution of multistep recruitment of ULK1 to membranes in autophagy
The ULK1 complex (ULK1C) and the class III phosphatidylinositol 3-kinase complex I (PI3KC3-C1) act together to initiate autophagy. Human ULK1C consists of ULK1 itself, FIP200, and the HORMA domain het...
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CIBSS – Centre for Integrative Biological Signalling Studies @cibss.bsky.social · 06/11/2025
Congratulations! Claudine Kraft @kraftlabfr.bsky.social receives a prestigious ERC Synergy Grant – to find out why some protein #aggregates can be cleared by #autophagy and others not. She and her partners will harness this knowledge to improve autophagy in #ageing & #disease. 🔗  kurzlinks.de/50j8
kurzlinks.de
ERC Synergy Grant for Prof. Dr. Claudine Kraft
CIBSS speaker Prof. Dr. Claudine Kraft is part of a team receiving an ERC Synergy Grant of ten million euros for her research on how autophagy degrades large protein aggregates in health and disease.
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Jim Hurley @jimhurley.bsky.social · 06/11/2025
Thrilled to join you and Claudine to study the cell's own version of Banksy's self-shredding artwork!
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Sascha Martens @martenslab.bsky.social · 06/11/2025
Fantastic teamwork with @kraftlabfr.bsky.social and @jimhurley.bsky.social! Looking forward to exciting discoveries ahead. Many thanks to @erc.europa.eu for funding our proposal. @univie.ac.at @maxperutzlabs.ac.at @viennabiocenter.bsky.social
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Shotaro Otsuka @shotarootsuka.bsky.social · 04/11/2025
Another opportunity to join @maxperutzlabs.ac.at ! If you're looking to start your own lab in a collaborative and supportive environment, I highly recommend it! www.nature.com/naturecareer...
nature.com
Tenure-Track Professorship in Genome Biology - Vienna BioCenter, Austria job with Max Perutz Labs, University of Vienna | 12848567
Launch your lab at the Max Perutz Labs and join us in our mission to analyze and reconstitute complex biological systems across scales.
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Max Perutz Labs Vienna @maxperutzlabs.ac.at · 31/10/2025
📢 Open Call! The Max Perutz Labs invite applications for a Full Professorship in Integrative Structure Biology with a focus on in situ structural biology using cryo-electron tomography (cryo-ET) and related methods. More details ➡️ tinyurl.com/brswbymu
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Elias Adriaenssens @elias-adriaenssens.bsky.social · 31/10/2025
Our latest review is now online! 👇 @martenslab.bsky.social Mechanism of autophagy initiation by transmembrane selective autophagy receptors | The EMBO Journal www.embopress.org/doi/full/10....
embopress.org
Mechanism of autophagy initiation by transmembrane selective autophagy receptors | The EMBO Journal
EMBO Press is an editorially independent publishing platform for the development of EMBO scientific publications.
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Jim Hurley @jimhurley.bsky.social · 20/09/2025
Position available! Team @mito911.bsky.social needs a new scientific program manager to take over from legendary super-PM @doroteaartscience.bsky.social, who is moving on to bigger things. This is a Berkeley-based position. Apply at aprecruit.berkeley.edu/JPF05103.
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Zhicheng Cui | 崔志成 @chen3dem.bsky.social · 17/09/2025
Finally in @nature.com 🎉 We uncovered step-wise mTORC1 activation on membrane: RAG–Ragulator recruits, RHEB pushes closer, and direct membrane contacts by RAPTOR + mTOR trigger full kinase activity.👉 The membrane is not just a platform — it’s part of the mechanism. www.nature.com/articles/s41...
nature.com
Structural basis for mTORC1 activation on the lysosomal membrane - Nature
Cryo-electron microscopy was used to study human mechanistic target of rapamycin complex 1 (mTORC1) activation on lysosomal membranes, showing progressive recruitment by RAG–Ragulator, RHEB and R...
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Christa Buecker @chribue.bsky.social · 10/09/2025
Just one more week left to get an application in! Starting my lab at the Perutz and the @viennabiocenter.bsky.social has been a fantastic opportunity that shaped me as a scientist!
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Aligning Science Across Parkinson's @asapresearch.parkinsonsroadmap.org · 02/09/2025
📣 Don't miss out on the upcoming @mito911.bsky.social webinar featuring Katie Drerup, PhD, from the University of Wisconsin. 👇 Reserve your spot using the link below. 📅 September 8 ⏰ 11:00 AM EST RSVP: bit.ly/4mUJeAc
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Martin Loose @nartimsoole.bsky.social · 01/09/2025
We are looking for a Master’s student to join a project on in vitro reconstitution of signaling networks in pathogen–host interactions: combine protein biochemistry, fluorescence microscopy & image analysis. Deadline: September 15. Find out more and apply here: ist.ac.at/en/job/maste...
ist.ac.at
Master Thesis Position – Loose Research Group
Our Group The Loose lab at the Institute of Science and Technology Austria (ISTA) is looking for a highly motivated Master student to join our research on the in vitro reconstitution of signaling n...
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Dan Grabarczyk @dangrabarczyk.bsky.social · 28/08/2025
Glad to share the final version of our story about the UBR4 complex, an E4 ligase protein quality control hub @science.org. Now with more cryo-EM structures and a deeper dive into substrate recognition, especially escaped mitochondrial proteins @clausenlab.bsky.social www.science.org/doi/10.1126/...
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Dan Grabarczyk @dangrabarczyk.bsky.social · 27/08/2025
Happy to share our work on the structure and function of the unusual E3 ligase ZNFX1 @cp-cell.bsky.social. It uses a nucleic acid-activated transthiolation mechanism, ubiquitinating and clustering RNA to protect cells in an immune response. @clausenlab.bsky.social www.cell.com/cell/fulltex...
cell.com
A split-site E3 ligase mechanism enables ZNFX1 to ubiquitinate and cluster single-stranded RNA into ubiquitin-coated nucleoprotein particles
Grabarczyk et al. show the structure and mechanism of a non-canonical ubiquitin ligase, which is activated through nucleic-acid-induced oligomerization and is critical for cell survival during immune ...
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