Lucien Weiss
@weisslab.bsky.social
430 followers 340 following 2 posts
Assoc. Prof @polymtl @transmedtech Cell biophysics, superres microscopy, & curious-methods enthusiast. We have open positions www.WeissLab.ca
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Reposted by Lucien Weiss
clicjf.bsky.social
Intéressant, ça : les critères de sélection du prochain Scientifique en chef du Québec ont été publiés cette semaine. Des volontaires ? 😉
publicationsduquebec.gouv.qc.ca/fileadmin/ga...
publicationsduquebec.gouv.qc.ca
Reposted by Lucien Weiss
kjverhey1.bsky.social
I never thought watching microtubules break could be so interesting! I learned so much about mechanics and modeling in this work and am extremely grateful to Archie Geng for leading the way. Also huge thanks to François Nédélec for creating Cytosim and providing advice along the way.
jcb.org
Geng, @kjverhey1.bsky.social et al find that KIF1C forms condensates where the exposed #kinesin motor domains entangle nearby #microtubules, causing them to bend & break in a process dependent on motor processivity, cluster properties, cytoplasmic viscosity, & MT anchors rupress.org/jcb/article/...
weisslab.bsky.social
"Large-scale visualization of α-synuclein oligomers in Parkinson’s disease brain tissue," NatBME doi.org/10.1038/s41551-025-01496-4
A culmination of wild brainstorms, imaging marathons, analysis breakthroughs and setbacks, around the clock work before conferences, and new friends along the way! 🧠🎆
Reposted by Lucien Weiss
amsikking.bsky.social
The culmination of many years work. One of the most advanced light-sheet microscopes in the world!

-> A large field of view Snouty light-sheet microscope, with any immersion remote refocus and real-time multi-angle projections!

For details see previous posts and here: github.com/amsikking/HT...
Reposted by Lucien Weiss
ncorley.bsky.social
RFdiffusion3 is here! We train a general network that explicitly models every atom and use it to design active enzymes and DNA binders.

Tremendous team effort with Jasper, Rohith, Raktim, Rafi, Yanjing, Paul, Jonathan, and many others!

Check it out: lnkd.in/eiUFfJaM.
Reposted by Lucien Weiss
scienceofpd.bsky.social
Examining measures of executive function & MRI brain data from 497 252 UK Biobank cases, researchers find that pre-diagnosis MRI grey matter volume was lower in #Parkinsons (vs controls), in addition to curious trends in other disease indications
academic.oup.com/braincomms/a...
Reposted by Lucien Weiss
elife.bsky.social
Reconstructing long-range axons from dense brain images is tough.

This study introduces a novel method that separates axon identification from global statistical rules, showing big improvements over existing tools for mapping neuronal projections.
buff.ly/OBKr9cM
Reposted by Lucien Weiss
jonatanalvelid.bsky.social
Excited to share my postdoc work from the Eggeling lab in Jena (@leibnizipht.bsky.social, #FSUJena, #KTHuniversity) on bringing smart microscopy to super-resolution MINFLUX: event-triggered MINFLUX microscopy.
Demonstrative schematics and example timeline of event-triggered MINFLUX microscopy.
Reposted by Lucien Weiss
anhhle2702.bsky.social
YO, what's up with all these almost-witchcraft techniques?? In this paper, they develop a way to freeze cells so quickly that it preserves Calcium waves midway!! WHAT??? HELLO??? So now you can do 3D reconstruction of calcium waves with just a normal confocal. www.nature.com/articles/s41...
Reposted by Lucien Weiss
loicaroyer.bsky.social
🧬🔬🧪 🎉 Our team at @czbiohub is thrilled to share TWO companion papers out today in @NatureMethods!
📦 Ultrack — robust, scalable nD cell tracking
🌐 inTRACKtive — a beautiful, open-source web viewer for lineage exploration
Let’s dive in! 👇
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Lucien Weiss
Reposted by Lucien Weiss
labpresse.bsky.social
Can we learn motion models from post-processed tracks? 🧐
Not really 😢

Emission noise accounts for ~99% of the likelihood.

TLDR: What you think is anomalous diffusion… might just be noise. 🤷‍♂️🤷‍♂️🤷‍♂️🤷‍♂️

🔗 Read more in our latest preprint: arxiv.org/abs/2507.05599

#Biophysics
How Easy Is It to Learn Motion Models from Widefield Fluorescence Single Particle Tracks?
Motion models (i.e., transition probability densities) are often deduced from fluorescence widefield tracking experiments by analyzing single-particle trajectories post-processed from data. This analy...
arxiv.org
weisslab.bsky.social
Our resident mischief engineer/entrepreneur, Khatuli!
Khatuli.
Cat, engineer, entrepreneur.
Reposted by Lucien Weiss
falkoschmidt.bsky.social
It's out & hot 🔥 Not only because it just went online but since we show that engineered heat patterns are super effective in manipulating fluid flows & particles.
If you work in microfluidics, or need reconfigurable environments in your experiments, give it a read!
www.nature.com/articles/s41...
🧪💡
Three-dimensional optofluidic control using reconfigurable thermal barriers - Nature Photonics
A fluidic system with spatially reconfigurable hot spots generated by optical pumping of plasmonic nanorods is demonstrated, creating virtual barriers by generating local heating via photothermal conv...
www.nature.com
Reposted by Lucien Weiss
natphoton.nature.com
New open access article online: Microscale generation and control of nanosecond light by light in a liquid crystal.

go.nature.com/3H0mT5a
Reposted by Lucien Weiss
biorxiv-biophys.bsky.social
Super-resolution live-cell mapping of protein-protein interactions using chemogenetic split reporters and STED microscopy https://www.biorxiv.org/content/10.1101/2025.08.05.668682v1
Reposted by Lucien Weiss
mwnautilus.bsky.social
#PALH: How to convert a #3Dprinter to a personal #automated #OpenSource #liquid #handler for life #science workflows:

- based on #Ender3
- cost: US $400
- #PCR setup, #DNA purification using #magnetic beads

doi.org/10.1016/j.sl...
#DIYbio #DIYchem #chemistry #lab #instruments #pipet #automation
Reposted by Lucien Weiss
wyssinstitute.bsky.social
Wyss scientists have invented a novel metabolic labeling technology that enables the “tagging” of the surface of T cells with immune-enhancing cytokine molecules, which could help expand adoptive T cell therapies to the treatment of solid tumors.
Metabolically Labeled CAR-T Cells Against Cancer
Through a simple and effective metabolic labeling approach, patient-derived T cells engineered to carry immune-enhancing cytokines on their surfaces could help expand adoptive T cell therapies to…
buff.ly
Reposted by Lucien Weiss
lumasullo.bsky.social
Ångström-resolution imaging of cell-surface glycans

Now published in Nature Nanotechnology! 🤩
@natnano.nature.com

www.nature.com/articles/s41...
Reposted by Lucien Weiss
scienceofpd.bsky.social
Pieces of the puzzle coming together: Researchers report #Parkinsons-associated GBA1 mutations impair Sonic Hedgehog signaling & Hedgehog-dependent neuroprotective factor production by a distinct mechanism
www.pnas.org/doi/10.1073/...
Reposted by Lucien Weiss
dpshepherd.bsky.social
Tensorstore is much faster for read/write than vanilla zarr. Tools are here: github.com/QI2lab/opm-p...

Currently we only support our custom pymmcore-plus OPM format and ASI’s OPM format. Happy to work with you to support CZI LLSM files if you open an issue and provide some example data.
GitHub - QI2lab/opm-processing-v2: Code for fast deconvolution, deskewing, registration, and fusion of OPM/diSPIM/LLSM data.
Code for fast deconvolution, deskewing, registration, and fusion of OPM/diSPIM/LLSM data. - QI2lab/opm-processing-v2
github.com
Reposted by Lucien Weiss