Zechner Lab
@zechnerlab.bsky.social
510 followers 270 following 8 posts
Research group at SISSA / Trieste. Interested in stochastic processes in biology & biophysics. Posts by C. Zechner.
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lucagiorgetti.bsky.social
Really excited to share our latest work led by @mattiaubertini.bsky.social and @nesslfy.bsky.social: we report that cohesin loop extrusion creates rare but long-lived encounters between genomic sequences which underlie efficient enhancer-promoter communication.
www.biorxiv.org/content/10.1...
A🧵👇
Reposted by Zechner Lab
anaisbailles.bsky.social
Thanks a lot to @elisecutts.bsky.social for nicely highlighting and putting in context our article! It was very interesting to discuss together, notably about the analogies between the emergence of order in Hydra and other physical phenomena.
elisecutts.bsky.social
Hydra are ~basically~ immortal.

Shred 50 of the lil guys to bits and pack their cells in a blob, and that blob will grow into a new Hydra... albeit with a few extra heads!

This week's post is a Q&A @anaisbailles.bsky.social @mpi-cbg.de about the physics of how Hydra coax order from chaos.🧪⚛️
Hydra are a cosmos in a cuvette
Anaïs Bailles on astrophysics and immortal animals
www.reviewertoo.com
Reposted by Zechner Lab
nadlerlab.bsky.social
Out today in @nature.com: Together with the Honigmann, Shevchenko, Drobot and Hof labs, we present a general workflow for imaging the localization and transport of individual lipids in cells and mapping their metabolism.
www.nature.com/articles/s41...
Reposted by Zechner Lab
anaisbailles.bsky.social
Our beautiful Hydra made the cover!!! 😍😍😍
An experiment performed by Pavel Mejstrik with a HCR protocol by @giuliaserafini.bsky.social, @paveltomancak.bsky.social lab @mpi-cbg.de
Actin fibers in blue, nuclei in orange.
Reposted by Zechner Lab
paveltomancak.bsky.social
Our first #Hydra paper. @anaisbailles.bsky.social all the way, with crucial theory contributions from Carl Modes and @zechnerlab.bsky.social Hydra maintenance by Heino Andreas and HCR by Giulia Serafini. Teamwork. Many thanks to the generous Hydra research community.
anaisbailles.bsky.social
Very happy that the first article from my postdoc work in the Tomancak lab is now published @PNAS! www.pnas.org/doi/10.1073/.... We studied the self-organization of actin in aggregates made from Hydra cells. Thread below (1/9)
Reposted by Zechner Lab
Reposted by Zechner Lab
haharrington.bsky.social
We are searching for an AI researcher in lab automation, statistical ML and (theoretical) physics AI for bio/med. Expression of interest and nominations welcome!!!
Reposted by Zechner Lab
lucagiorgetti.bsky.social
We are looking for a research assistant to join our lab and support ongoing projects with genome engineering in mouse embryonic stem cells! Please get in touch if you are interested.
www.fmi.ch/education-ca...
Friedrich Miescher Institute, open position
Friedrich Miescher Institute, open position
www.fmi.ch
Reposted by Zechner Lab
andersshansen.bsky.social
(1/n) Thread @matteomazzocca.bsky.social @domenicnarducci.bsky.social Simon Grosse-Holz @jessematthias.bsky.social preprint

Q: how does chromatin move?

Using MINFLUX, SPT & SRLCI, we track chromatin dynamics across 7 orders of magnitude in time to provide answers www.biorxiv.org/content/10.1...
zechnerlab.bsky.social
Many congratulations to Anne for defending her PhD this week…excellent results and presentation! We wish you all the best for your future career!
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bussigio.bsky.social
We are finalizing the program of the @cecamevents.bsky.social RNA modelling across scales www.cecam.org/workshop-det... at SISSA, Trieste, Italy, May 19-22. Please note that we still have a few slots for in person attendance. We will accept applications for the next few weeks, until fully booked!
Reposted by Zechner Lab
paveltomancak.bsky.social
Come to #Prague for #Woodstock2025. What is it? A scientific conference unlike any other. Think #BurningMan or #MusicFestival but #science themed. It'll have two parts - decentralised sessions spread in #Prague (sightsee as you move around) & #campsite event to wrap it up (1/7)
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mpipks.bsky.social
"Cacio e pepe" physics: In arxiv.org/abs/2501.00536v1, eight Italian scientists from the Max Planck Institute for the Physics of Complex Systems explain the physics behind a perfect dish of "cacio e pepe" and how to eschew the dreaded "mozzarella phase" - work featured @nytimes.com.
zechnerlab.bsky.social
Congratulations Tommaso for an excellent PhD defense! Very well done!
zechnerlab.bsky.social
3. Even "simple" systems with purely homotypic interactions lack a fixed c_sat in non-equilibrium conditions (e.g., cells)

4. Inferring solute interactions (homotypic vs. heterotypic) from changes of c_sat / partition coefficient is problematic in cells because of point 3.
zechnerlab.bsky.social
Key conclusions:

1. Noise reduction and concentration buffering are different concepts

2. Noise reduction does not depend on a fixed saturation concentration (c_sat)
zechnerlab.bsky.social
Excited to share our new work with Frank Jülicher on noise control & concentration buffering in intracellular condensates! There has been confusion about these concepts, which we aim to address in this paper.

www.cell.com/cell-systems...
Reposted by Zechner Lab
bussigio.bsky.social
Starting the new season of seminars in Molecular and Statistical Biophysics at SISSA! Gareth Tribello today gave a talk with title “Reconnaissance Metadynamics Rides Again”
zechnerlab.bsky.social
Please share! There are two postdoc opportunities at the Molecular and Statistical Biophysics group at SISSA. Join us in beautiful Trieste! More information at msb.sissa.it/join-us/
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andersshansen.bsky.social
Excited to share James Jusuf's preprint:

By integrating Micro-C with SuperRes Live-Imaging we can calibrate genomics&imaging to perform absolute quantification of looping (e.g. this loop is present 3%)

We quantify mESC 36k loops: are generally rare (2.3%)

www.biorxiv.org/content/10.1...
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bussilab.org
📢 Post-doc opportunity alert! Join the Molecular and Statistical Biophysics group at SISSA. Choose your mentor from Giovanni Bussi, Cristian Micheletti, or Angelo Rosa, or collaborate across these groups. www.bussilab.org/joinus#postd... #joinus Please reshare!
Join Us
RNA, molecular dynamics, and more
www.bussilab.org
zechnerlab.bsky.social
Exciting news! As of today, our group is part of SISSA in Trieste. Time to say THANK YOU to all current and past group members, collaborators and mentors and to @mpicbg.bsky.social for hosting us for 8 amazing years! If you are interested in working with us in Trieste, please get in touch!