Sascha Martens
@martenslab.bsky.social
📤 579
📥 122
📝 3
Biochemist and cell biologist working on autophagy at the Max Perutz Labs, University of Vienna
reposted by
Sascha Martens
Florey Lab
2 days ago
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
loading . . .
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...
https://www.biorxiv.org/cgi/content/short/2026.07.08.736046v1
1
8
6
reposted by
Sascha Martens
Claudine Kraft's Lab
13 days ago
First ERC Synergy meeting with
@martenslab.bsky.social
and
@jimhurley.bsky.social
in Vienna, great start! Thanks Sascha for hosting 🙏
@erc.europa.eu
1
21
6
reposted by
Sascha Martens
Jim Hurley
13 days ago
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.
0
4
1
reposted by
Sascha Martens
Stella Hurtley
16 days ago
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/...
loading . . .
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...
https://www.science.org/doi/10.1126/science.ady3911
1
24
10
reposted by
Sascha Martens
bioRxiv Cell Biology
about 1 month ago
Structural Mechanism and Cellular Restriction of Tau Seeding from Endolysosomes
https://www.biorxiv.org/content/10.64898/2026.06.08.731026v1
0
5
5
reposted by
Sascha Martens
Reese Richardson
about 1 month ago
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)
loading . . .
18
589
443
reposted by
Sascha Martens
Reese Richardson
about 1 month ago
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...
loading . . .
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
https://reeserichardson.blog/2026/05/28/how-much-of-thermo-fishers-antibody-data-has-been-manipulated/
23
585
370
reposted by
Sascha Martens
Gregor Mendel Institute of Molecular Plant Biology
about 1 month ago
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.
3
23
8
reposted by
Sascha Martens
Victoria Deneke
about 2 months ago
We hope this work SPARKs your curiosity (and your feedback)! ✨
www.biorxiv.org/content/10.6...
loading . . .
https://www.biorxiv.org/content/10.64898/2026.05.13.724128v1.full.pdf+html
1
16
3
reposted by
Sascha Martens
Reese Richardson
about 2 months ago
@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...
15
174
114
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
loading . . .
https://www.biorxiv.org/content/10.64898/2026.05.15.725374v1
about 2 months ago
0
25
13
reposted by
Sascha Martens
Claudine Kraft's Lab
3 months ago
🚨 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....
2
32
16
reposted by
Sascha Martens
Vienna BioCenter Scientific Training
3 months ago
Exciting job offer: PhD Program Manager. Lead recruitment, support PhD candidates, and shape doctoral training at a top international life sciences campus. https://ow.ly/3YkN50YAuGM
Institute of Molecular Biotechnology
,
Max Perutz Labs Vienna
,
IMP
,
Gregor Mendel Institute of Molecular Plant Biology
0
1
4
reposted by
Sascha Martens
Journal of Cell Biology
4 months ago
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
0
10
7
reposted by
Sascha Martens
Aligning Science Across Parkinson's
4 months ago
📢 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
0
5
3
reposted by
Sascha Martens
Aligning Science Across Parkinson's
4 months ago
📢 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
0
10
5
reposted by
Sascha Martens
Yasin Dagdas
5 months ago
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 🧵
6
121
60
reposted by
Sascha Martens
Bernd Bauer
5 months ago
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...
loading . . .
https://www.biorxiv.org/content/10.64898/2026.02.12.705532v1
2
39
16
reposted by
Sascha Martens
IMP
6 months ago
More:
www.imp.ac.at/news/article...
loading . . .
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...
https://www.imp.ac.at/news/article/from-one-complex-to-many-rethinking-the-bloc-borc-system
0
1
2
reposted by
Sascha Martens
Wilfling Lab
6 months ago
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
3
116
43
reposted by
Sascha Martens
Wilfling Lab
6 months ago
We are excited to share our new preprint which is now available to read on biorXiv:
doi.org/10.64898/202...
🎉🎉🎉
loading . . .
2
119
43
reposted by
Sascha Martens
Yasin Dagdas
6 months ago
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!
add a skeleton here at some point
0
19
4
reposted by
Sascha Martens
SFB Targeted Protein Degradation
6 months ago
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
1
35
24
reposted by
Sascha Martens
Aligning Science Across Parkinson's
6 months ago
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
0
4
3
reposted by
Sascha Martens
The EMBO Journal
6 months ago
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...
loading . . .
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...
https://link.springer.com/article/10.1038/s44318-025-00672-1
1
13
7
reposted by
Sascha Martens
Sam Lewis, Ph.D.
7 months ago
⚡️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...
loading . . .
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 ...
https://www.biorxiv.org/content/10.64898/2025.12.17.694973v1
2
93
47
reposted by
Sascha Martens
Yasin Dagdas
7 months ago
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!
2
116
48
reposted by
Sascha Martens
Silvia Ramundo
7 months ago
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
1
36
24
reposted by
Sascha Martens
Max Perutz Labs Vienna
8 months ago
✨ 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
0
10
10
reposted by
Sascha Martens
Elias Adriaenssens
8 months ago
Join us later today 👇
add a skeleton here at some point
0
1
3
reposted by
Sascha Martens
IMP
8 months ago
🌍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-...
1
96
91
reposted by
Sascha Martens
Dorotea - Art&Science
8 months ago
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...
loading . . .
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...
https://doi.org/10.1101/2025.11.07.687251
0
19
9
reposted by
Sascha Martens
CIBSS – Centre for Integrative Biological Signalling Studies
8 months ago
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
loading . . .
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.
https://kurzlinks.de/50j8
2
30
10
reposted by
Sascha Martens
Jim Hurley
8 months ago
Thrilled to join you and Claudine to study the cell's own version of Banksy's self-shredding artwork!
0
7
3
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
add a skeleton here at some point
8 months ago
2
14
3
reposted by
Sascha Martens
Shotaro Otsuka
8 months ago
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...
loading . . .
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.
https://www.nature.com/naturecareers/job/12848567/tenure-track-professorship-in-genome-biology/?LinkSource=PremiumListing
0
4
2
reposted by
Sascha Martens
Max Perutz Labs Vienna
8 months ago
📢 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
0
27
46
reposted by
Sascha Martens
Elias Adriaenssens
8 months ago
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....
loading . . .
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.
https://www.embopress.org/doi/full/10.1038/s44318-025-00615-w
1
24
15
reposted by
Sascha Martens
Jim Hurley
10 months ago
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
.
0
9
8
reposted by
Sascha Martens
Zhicheng Cui | 崔志成
10 months ago
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...
loading . . .
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...
https://www.nature.com/articles/s41586-025-09545-3
5
35
17
reposted by
Sascha Martens
Christa Buecker
10 months ago
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!
add a skeleton here at some point
0
28
27
reposted by
Sascha Martens
Aligning Science Across Parkinson's
10 months ago
📣 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
loading . . .
0
3
4
reposted by
Sascha Martens
Martin Loose
10 months ago
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...
loading . . .
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...
https://ist.ac.at/en/job/master-thesis-position-loose-research-group/
1
13
6
reposted by
Sascha Martens
Dan Grabarczyk
11 months ago
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/...
loading . . .
7
80
31
reposted by
Sascha Martens
Dan Grabarczyk
11 months ago
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...
loading . . .
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 ...
https://www.cell.com/cell/fulltext/S0092-8674%2825%2900920-1
6
85
40
reposted by
Sascha Martens
bioRxivpreprint
11 months ago
A lipid transfer-dependent feedback loop activates ATG9A compartments in autophagy initiation
https://www.biorxiv.org/content/10.1101/2025.08.16.670665v1
0
10
6
reposted by
Sascha Martens
Jim Hurley
11 months ago
So happy to see
@doroteaartscience.bsky.social
's art on the cover!
add a skeleton here at some point
0
30
6
reposted by
Sascha Martens
Yasin Dagdas
11 months ago
If you’re enjoying some calm while others are on holiday, here’s a
#NEW
#preprint
to dive into — led by the brilliant
@vbcscitraining.bsky.social
student A. Abdrakhmanov: 👇 A quick thread + link:
www.biorxiv.org/content/10.1...
loading . . .
Ancestral P-body proteins rewired for autophagic recycling in the early land plant Marchantia polymorpha
Processing bodies (P-bodies) are conserved ribonucleoprotein (RNP) granules central to RNA metabolism across eukaryotes. Although the mechanisms underlying their assembly are well understood, the path...
https://www.biorxiv.org/content/10.1101/2025.08.09.669463v1
4
55
31
reposted by
Sascha Martens
The Science of Parkinson's
11 months ago
New research reports the identification of a Mitophagic Stress Response ("MitoSR" - mmm, catchy!) activated by mitochondrial damage in neurons & operating in parallel to canonical Pink1/Parkin-dependent mitophagy
www.nature.com/articles/s41...
0
9
4
reposted by
Sascha Martens
Journal of Cell Biology
12 months ago
The rapidly expanding role of LC3-interacting regions in
#autophagy
. New Perspective from Brian North,
@doroteaartscience.bsky.social
, Christopher Shoemaker and colleagues (Geisel School of Medicine, Dartmouth College):
rupress.org/jcb/article/...
0
20
8
Load more
feeds!
log in