@edenchang.bsky.social
RA Kuo lab https://www.hsia-laboratory.com/
PhD Coyle lab https://www.coylelab.org/
Postdoc Rosen lab
PhD Coyle lab https://www.coylelab.org/
Postdoc Rosen lab
Reposted
Our new paper is out now in Nature Communications! We uncovered the function of XBP1 in beta cells of a preclinical model of T1D and identified unique and shared gene regulatory networks driven by IRE1 and XBP1.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Defining the role of β-cell IRE1α/XBP1 pathway and its gene regulatory network components in non-obese diabetic mice - Nature Communications
Modulating the unfolded protein response (UPR) can induce protective dedifferentiation of β-cells in non-obese diabetic mice. Here, the authors show that β-cell deletion of UPR transcription factor XB...
www.nature.com
November 26, 2025 at 2:28 PM
Our new paper is out now in Nature Communications! We uncovered the function of XBP1 in beta cells of a preclinical model of T1D and identified unique and shared gene regulatory networks driven by IRE1 and XBP1.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted
Still posting cytoskeleton videos, it seems. Actin this time.
Sample: Lifeact-eGFP in HeLa cells.
Modality: Airyscan confocal
Timestamp is mm:ss and the scale bar is 5 µm.
Sample: Lifeact-eGFP in HeLa cells.
Modality: Airyscan confocal
Timestamp is mm:ss and the scale bar is 5 µm.
November 23, 2025 at 3:21 AM
Still posting cytoskeleton videos, it seems. Actin this time.
Sample: Lifeact-eGFP in HeLa cells.
Modality: Airyscan confocal
Timestamp is mm:ss and the scale bar is 5 µm.
Sample: Lifeact-eGFP in HeLa cells.
Modality: Airyscan confocal
Timestamp is mm:ss and the scale bar is 5 µm.
Reposted
Key transcripts encoded centrin-like proteins, a frequent component of sensory/contractile structures in protists. We visualized tentacle ultrastructure by U-ExM with @dudinlab.bsky.social lab, discovering stunning tip and collar structures 🤯that add structural complexity to new tentacle formation.
November 18, 2025 at 4:15 PM
Key transcripts encoded centrin-like proteins, a frequent component of sensory/contractile structures in protists. We visualized tentacle ultrastructure by U-ExM with @dudinlab.bsky.social lab, discovering stunning tip and collar structures 🤯that add structural complexity to new tentacle formation.
Reposted
Cellular structure self-organizes through an interplay between internal mechanisms and external cues. The single-celled suctorian P. collini builds a trap structure to capture large prey using microtubule feeding tentacles, creating feedback between cell morphology and prey availability.
November 18, 2025 at 4:15 PM
Cellular structure self-organizes through an interplay between internal mechanisms and external cues. The single-celled suctorian P. collini builds a trap structure to capture large prey using microtubule feeding tentacles, creating feedback between cell morphology and prey availability.
Reposted
Finally – there are many mysteries to still resolve for these cells. From dramatic metamorphic capabilities🤯 to prey preference and detection mechanisms 🕵️. For anyone interested in collaborating or getting their hands on these cells, these fantastic beasts culture well and we’re happy to share!
November 18, 2025 at 4:15 PM
Finally – there are many mysteries to still resolve for these cells. From dramatic metamorphic capabilities🤯 to prey preference and detection mechanisms 🕵️. For anyone interested in collaborating or getting their hands on these cells, these fantastic beasts culture well and we’re happy to share!
Reposted
How do cells adapt morphology to function? In a 🔥 preprint by @zjmaggiexu.bsky.social , with @dudinlab.bsky.social and @amyweeks.bsky.social , we identify a self-organizing single-cell morphology circuit that optimizes the feeding trap structure of the suctorian P. collini. 🧵 tinyurl.com/4k8nv926
November 18, 2025 at 4:15 PM
How do cells adapt morphology to function? In a 🔥 preprint by @zjmaggiexu.bsky.social , with @dudinlab.bsky.social and @amyweeks.bsky.social , we identify a self-organizing single-cell morphology circuit that optimizes the feeding trap structure of the suctorian P. collini. 🧵 tinyurl.com/4k8nv926
Reposted
Thrilled to share our work on the 🔥 single-celled predator Podophrya collini, which rewires its cell morphology to hunt more efficiently. Huge thanks to our amazing team—Amy, Lauren, Omaya, Marine, Mari, and especially Scott—for making this shine! ✨
How do cells adapt morphology to function? In a 🔥 preprint by @zjmaggiexu.bsky.social , with @dudinlab.bsky.social and @amyweeks.bsky.social , we identify a self-organizing single-cell morphology circuit that optimizes the feeding trap structure of the suctorian P. collini. 🧵 tinyurl.com/4k8nv926
November 18, 2025 at 5:12 PM
Thrilled to share our work on the 🔥 single-celled predator Podophrya collini, which rewires its cell morphology to hunt more efficiently. Huge thanks to our amazing team—Amy, Lauren, Omaya, Marine, Mari, and especially Scott—for making this shine! ✨
Reposted
Very excited to present OpenCGChromatin🔥🔥🔥
A new coarse-grained model that probes full chromatin condensates at near-atomistic resolution to reveal the molecular regulation of chromatin structure and phase separation
Brilliantly led by @kieran-russell.bsky.social, with the Rosen and Orozco groups
A new coarse-grained model that probes full chromatin condensates at near-atomistic resolution to reveal the molecular regulation of chromatin structure and phase separation
Brilliantly led by @kieran-russell.bsky.social, with the Rosen and Orozco groups
November 18, 2025 at 3:07 PM
Very excited to present OpenCGChromatin🔥🔥🔥
A new coarse-grained model that probes full chromatin condensates at near-atomistic resolution to reveal the molecular regulation of chromatin structure and phase separation
Brilliantly led by @kieran-russell.bsky.social, with the Rosen and Orozco groups
A new coarse-grained model that probes full chromatin condensates at near-atomistic resolution to reveal the molecular regulation of chromatin structure and phase separation
Brilliantly led by @kieran-russell.bsky.social, with the Rosen and Orozco groups
Reposted
Congratulations to all authors! Happy to have contributed to the cryo-EM side. It was a lot of fun learning more about the herpesvirus DNA replication process and how clinical drugs inhibit it 🦠💊. Big thanks to @cijilim.bsky.social and Tahir for the support!
New work from Tahirov x Lim collaboration! @qixianghe.bsky.social from my lab contributed the cryo-EM structures for this work. We are excited to help explain how anti-HSV drugs work and to guide their future development.
www.science.org/doi/10.1126/...
@unmc.bsky.social @uwbiochem.bsky.social
www.science.org/doi/10.1126/...
@unmc.bsky.social @uwbiochem.bsky.social
Structural basis of herpesvirus helicase-primase inhibition by pritelivir and amenamevir
Structural studies of HSV-1 helicase-primase revealed how pritelivir and amenamevir bind and block its helicase activity.
www.science.org
November 10, 2025 at 2:49 AM
Congratulations to all authors! Happy to have contributed to the cryo-EM side. It was a lot of fun learning more about the herpesvirus DNA replication process and how clinical drugs inhibit it 🦠💊. Big thanks to @cijilim.bsky.social and Tahir for the support!
Reposted
Our paper in Science is out! @souravagrawal.bsky.social, @rlynn.bsky.social, @susvirkar.bsky.social, and the rest of the team show human RPA is a telomerase processivity factor essential for telomere maintenance. This reshapes our thinking about telomerase regulation. www.science.org/doi/10.1126/...
Human RPA is an essential telomerase processivity factor for maintaining telomeres
Telomerase counteracts telomere shortening by repeatedly adding DNA repeats to chromosome ends. We identified the replication protein A (RPA) heterotrimer as a telomerase processivity factor critical ...
www.science.org
October 30, 2025 at 10:07 PM
Our paper in Science is out! @souravagrawal.bsky.social, @rlynn.bsky.social, @susvirkar.bsky.social, and the rest of the team show human RPA is a telomerase processivity factor essential for telomere maintenance. This reshapes our thinking about telomerase regulation. www.science.org/doi/10.1126/...
Reposted
Lab’s first paper is out!! We show the first structures of #Asgard #chromatin by #cryo-EM 🧬❄️
Asgard histones form closed and open hypernucleosomes. Closed are conserved across #Archaea, while open resemble eukaryotic H3–H4 octasomes and are Asgard-specific. More here: www.cell.com/molecular-ce...
Asgard histones form closed and open hypernucleosomes. Closed are conserved across #Archaea, while open resemble eukaryotic H3–H4 octasomes and are Asgard-specific. More here: www.cell.com/molecular-ce...
October 28, 2025 at 3:07 PM
Lab’s first paper is out!! We show the first structures of #Asgard #chromatin by #cryo-EM 🧬❄️
Asgard histones form closed and open hypernucleosomes. Closed are conserved across #Archaea, while open resemble eukaryotic H3–H4 octasomes and are Asgard-specific. More here: www.cell.com/molecular-ce...
Asgard histones form closed and open hypernucleosomes. Closed are conserved across #Archaea, while open resemble eukaryotic H3–H4 octasomes and are Asgard-specific. More here: www.cell.com/molecular-ce...
Reposted
Check out our new work, led by talented @janhuemar.bsky.social, where we uncover that pioneer factor Oct4 remodels chromatin for DNA access not by opening it but by exploiting nucleosome breathing and forming clusters 🔥🔥🔥
🚨 🚨 🚨 New preprint alert!!! 🚨 🚨 🚨
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
October 22, 2025 at 5:10 AM
Check out our new work, led by talented @janhuemar.bsky.social, where we uncover that pioneer factor Oct4 remodels chromatin for DNA access not by opening it but by exploiting nucleosome breathing and forming clusters 🔥🔥🔥
Reposted
We propose that the reshaping of chromatin and the binding in a cluster-like manner can be one of the solutions to the so-called search problem. We hypothesize that this binding in high concentrations of Oct4 might be key to explaining how silenced genes are activated in cellular reprogramming.
October 21, 2025 at 9:59 AM
We propose that the reshaping of chromatin and the binding in a cluster-like manner can be one of the solutions to the so-called search problem. We hypothesize that this binding in high concentrations of Oct4 might be key to explaining how silenced genes are activated in cellular reprogramming.
Reposted
🚨 🚨 🚨 New preprint alert!!! 🚨 🚨 🚨
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
October 21, 2025 at 9:59 AM
🚨 🚨 🚨 New preprint alert!!! 🚨 🚨 🚨
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
In the past, we have learnt that Oct4 can induce nucleosome breathing on the mono-nucleosome level.
But what happens when you have a fibre of multiple nucleosomes?
www.biorxiv.org/content/10.1...
@rcollepardo.bsky.social @juliamaristany.bsky.social
Reposted
1/ New preprint alert!
In collaboration between the Rosen, Redding, Collepardo-Guevara & Gerlich labs, we uncover a surprising principle of chromosome organisation: electrostatic repulsion positions centromeres at the chromosome surface during mitosis.
🔗 doi.org/10.1101/2025...
In collaboration between the Rosen, Redding, Collepardo-Guevara & Gerlich labs, we uncover a surprising principle of chromosome organisation: electrostatic repulsion positions centromeres at the chromosome surface during mitosis.
🔗 doi.org/10.1101/2025...
An electrostatic repulsion model of centromere organisation
During cell division, chromosomes reorganise into compact bodies in which centromeres localise precisely at the chromatin surface to enable kinetochore-microtubule interactions essential for genome se...
doi.org
September 3, 2025 at 8:12 AM
1/ New preprint alert!
In collaboration between the Rosen, Redding, Collepardo-Guevara & Gerlich labs, we uncover a surprising principle of chromosome organisation: electrostatic repulsion positions centromeres at the chromosome surface during mitosis.
🔗 doi.org/10.1101/2025...
In collaboration between the Rosen, Redding, Collepardo-Guevara & Gerlich labs, we uncover a surprising principle of chromosome organisation: electrostatic repulsion positions centromeres at the chromosome surface during mitosis.
🔗 doi.org/10.1101/2025...
Reposted
Andrea A. Putnam, a UW School of Medicine and Public Health assistant professor of biomolecular chemistry, has been named a 2025 Packard Foundation Fellow in Science and Engineering. Congratulations, Dr. Putnam!
Andrea Putnam awarded 2025 Packard Fellowship - School of Medicine and Public Health
www.med.wisc.edu
October 16, 2025 at 7:12 PM
Andrea A. Putnam, a UW School of Medicine and Public Health assistant professor of biomolecular chemistry, has been named a 2025 Packard Foundation Fellow in Science and Engineering. Congratulations, Dr. Putnam!
Reposted
Some (+)ve news to lighten another heavy weekend: our latest preprint (c/o Mattiroli + Ramani labs) is up!
www.biorxiv.org/content/10.1...
A tour-de-force by 1st authors Bruna Eckhardt & @palindromephd.bsky.social, focusing on chromatin replication. RTs welcome; tweetorial in 3,2...(1/n)
www.biorxiv.org/content/10.1...
A tour-de-force by 1st authors Bruna Eckhardt & @palindromephd.bsky.social, focusing on chromatin replication. RTs welcome; tweetorial in 3,2...(1/n)
The eukaryotic replisome intrinsically generates asymmetric daughter chromatin fibers
DNA replication is molecularly asymmetric, due to distinct mechanisms for lagging and leading strand DNA synthesis. Whether chromatin assembly on newly replicated strands is also asymmetric remains un...
www.biorxiv.org
September 20, 2025 at 4:10 PM
Some (+)ve news to lighten another heavy weekend: our latest preprint (c/o Mattiroli + Ramani labs) is up!
www.biorxiv.org/content/10.1...
A tour-de-force by 1st authors Bruna Eckhardt & @palindromephd.bsky.social, focusing on chromatin replication. RTs welcome; tweetorial in 3,2...(1/n)
www.biorxiv.org/content/10.1...
A tour-de-force by 1st authors Bruna Eckhardt & @palindromephd.bsky.social, focusing on chromatin replication. RTs welcome; tweetorial in 3,2...(1/n)
Reposted
Today I am so pleased to present our work on how chromatin remodelers affect mesoscale chromatin organization.
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
ATP-dependent remodeling of chromatin condensates reveals distinct mesoscale outcomes
Adenosine triphosphate (ATP)–dependent chromatin remodeling enzymes mobilize nucleosomes, but how such mobilization affects chromatin condensation is unclear. We investigate effects of two major remod...
www.science.org
October 2, 2025 at 10:55 PM
Today I am so pleased to present our work on how chromatin remodelers affect mesoscale chromatin organization.
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
Reposted
Anthony Hyman @mpi-cbg.de @hymanlab.bsky.social recognized as a Clarivate @clarivateag.bsky.social Citation Laureate 2025. He is one of the 2025 Laureates in the field of chemistry, together with Clifford Brangwynne @brangwynnelab.bsky.social and Michael K. Rosen. www.mpi-cbg.de/news-outreac...
Anthony Hyman recognized as a Citation Laureate 2025
Clarivate unveils Citation Laureates 2025 - a distinguished group of 22 researchers
www.mpi-cbg.de
September 25, 2025 at 10:00 AM
Anthony Hyman @mpi-cbg.de @hymanlab.bsky.social recognized as a Clarivate @clarivateag.bsky.social Citation Laureate 2025. He is one of the 2025 Laureates in the field of chemistry, together with Clifford Brangwynne @brangwynnelab.bsky.social and Michael K. Rosen. www.mpi-cbg.de/news-outreac...
Reposted
A beautiful example of how spatiotemporal dynamics can enable multiplexed measurements.
September 16, 2025 at 11:36 AM
A beautiful example of how spatiotemporal dynamics can enable multiplexed measurements.
Reposted
New short paper from our lab @currentbiology.bsky.social, in which we discover of a new mode of cell motility for choanoflagellates: flagellar gliding. www.cell.com/current-biol... - A 🧵
Flagellar gliding in choanoflagellates
Freire-Delgado and Brunet discover a new mode of cell motility in choanoflagellates,
the closest relatives of animals. Under mild confinement, choanoflagellate move over
surfaces without cell deformat...
www.cell.com
September 9, 2025 at 6:12 PM
New short paper from our lab @currentbiology.bsky.social, in which we discover of a new mode of cell motility for choanoflagellates: flagellar gliding. www.cell.com/current-biol... - A 🧵
Reposted
Excited to share our new preprint, which was years in the making! chemrxiv.org/engage/chemr...
New reactions are typically developed by trial and error. How can we speed up this process? Read on to learn how we used DNA scaffolding to perform >500,000 parallel reactions on attomole scale.
1/n
New reactions are typically developed by trial and error. How can we speed up this process? Read on to learn how we used DNA scaffolding to perform >500,000 parallel reactions on attomole scale.
1/n
DNA-Scaffolded Ultrahigh-Throughput Reaction Screening
Discovering and optimizing reactions is central to synthetic chemistry. However, chemical reactions are traditionally screened using relatively low-throughput methods, prohibiting exploration of diver...
chemrxiv.org
August 14, 2025 at 5:40 PM
Excited to share our new preprint, which was years in the making! chemrxiv.org/engage/chemr...
New reactions are typically developed by trial and error. How can we speed up this process? Read on to learn how we used DNA scaffolding to perform >500,000 parallel reactions on attomole scale.
1/n
New reactions are typically developed by trial and error. How can we speed up this process? Read on to learn how we used DNA scaffolding to perform >500,000 parallel reactions on attomole scale.
1/n
Reposted
New preprint: we developed a method that uses phosphoproteome-derived peptide libraries (PhosPropels) for deep specificity profiling of phosphatases and phospholyases www.biorxiv.org/content/10.1...
August 13, 2025 at 5:20 PM
New preprint: we developed a method that uses phosphoproteome-derived peptide libraries (PhosPropels) for deep specificity profiling of phosphatases and phospholyases www.biorxiv.org/content/10.1...
Reposted
Excited to share our latest: we engineered the reactivity of a bacterial E1-like enzyme for ATP-driven modification of C termini. Our tool mimics the logic of peptide bond formation in biology for precision modification of proteins in vitro. 🧪https://rdcu.be/ewN7C
Engineered reactivity of a bacterial E1-like enzyme enables ATP-driven modification of protein and peptide C termini
Nature Chemistry - In living systems, ATP provides an energetic driving force for protein synthesis and modification. Now, an engineered enzymatic tool has been developed for high-yield, ATP-driven...
rdcu.be
July 18, 2025 at 2:40 PM
Excited to share our latest: we engineered the reactivity of a bacterial E1-like enzyme for ATP-driven modification of C termini. Our tool mimics the logic of peptide bond formation in biology for precision modification of proteins in vitro. 🧪https://rdcu.be/ewN7C
Reposted
Happy to share my paper investigating how altering translation allows E. Coli to overcome stabilized G-quadruplexes! Feels especially exciting to have this paper come out the day I am submitting my first postdoc fellowship application ☺️ academic.oup.com/nar/article/...
Altering translation allows E. coli to overcome G-quadruplex stabilizers
Abstract. G-quadruplex (G4) structures can form in guanine-rich DNA or RNA and have been found to modulate cellular processes, including replication, trans
academic.oup.com
April 7, 2025 at 7:30 PM
Happy to share my paper investigating how altering translation allows E. Coli to overcome stabilized G-quadruplexes! Feels especially exciting to have this paper come out the day I am submitting my first postdoc fellowship application ☺️ academic.oup.com/nar/article/...