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boyanbonev.bsky.social
Boyan Bonev
@boyanbonev.bsky.social
370 followers 200 following 24 posts
Group Leader at Helmholtz Center Munich * Brain Epigenomics
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
Can a stem cell change its epigenome while proliferating? In collaboration with the lab of Amos Tanay, we demonstrate that yes, the epigenome of neural stem cells (NSCs) is continuously remodeled, across multiple layers, during mouse corticogenesis. 1/14
www.biorxiv.org/content/10.1...
Neural stem cell epigenomes and fate bias are temporally coordinated during corticogenesis
The cerebral cortex orchestrates complex cognitive functions, yet how its distinct temporal lineages are molecularly patterned during development remains unresolved. Here, we integrate single-cell tra...
www.biorxiv.org
1 14 42
Reposted by Boyan Bonev
hamperllab.bsky.social
Hamperl Lab @hamperllab.bsky.social · Aug 4
Our latest research is online in the @biorxivpreprint.bsky.social! 🧬🎉

🔎 We have developed a novel, single-cell real-time approach to monitor R-loop generated TRCs, and we have shown R-loop-mediated, replisome-controlled transcription repression.

www.biorxiv.org/cgi/content/...
Replisome progression regulates R-loop mediated transcriptional repression
Maintaining cellular proliferation necessitates the synchronized activity of diverse molecular machineries operating in parallel on the genome. Wide-spread transcription and R-loop formation can inter...
www.biorxiv.org
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Reposted by Boyan Bonev
metorrespadilla.bsky.social
ME Torres-Padilla @metorrespadilla.bsky.social · Jul 15
🎤 Apply to speak @our TALENT FORUM by July 31!
Showcase YOUR research in Epigenetics & NucleicAcids @www.helmholtz-munich.de & connect with leading scientists

🧳Travel+accommodation covered if selected!
📝 Info+how to apply: lnkd.in/drkRvz7N

#postdoc #career #groupleader #HelmholtzMunich #research
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Reposted by Boyan Bonev
chr-mayer.bsky.social
Christian Mayer @chr-mayer.bsky.social · Jul 8
Now out in @natneuro.nature.com: Temporal control of progenitor competence shapes maturation in GABAergic neuron development in mice. Congrats to first authors @annrosebright.bsky.social, Yana Kotlyarenko, @flo-neuhaus.bsky.social, and thanks to all collaborators!
www.nature.com/articles/s41...
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Temporal control of progenitor competence shapes maturation in GABAergic neuron development in mice - Nature Neuroscience
Unlike cortical progenitors, ventral telencephalic progenitors retain the ability to generate diverse neuron types during neurogenesis. Here, the authors show that ventral telencephalic progenitor mat...
www.nature.com
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Reposted by Boyan Bonev
metorrespadilla.bsky.social
ME Torres-Padilla @metorrespadilla.bsky.social · Jun 12
Are you @ the late stages of your postdoc ? Want to pursue a PI career ?

Then this 👇👇 is for you ! Apply for a spot @ our Talent Forum
www.helmholtz-munich.de/en/stem-cell...

Peer-networking / Career orientation and more !!!

Please distribute :) 🙂
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · May 15
Looking forward to it!
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Reposted by Boyan Bonev
larsplus.bsky.social
Lars Velten @larsplus.bsky.social · May 8
Out in Cell @cp-cell.bsky.social: Design principles of cell-state-specific enhancers in hematopoiesis
🧬🩸 screen of fully synthetic enhancers in blood progenitors
🤖 AI that creates new cell state specific enhancers
🔍 negative synergies between TFs lead to specificity!
www.cell.com/cell/fulltex...
🧵
Design principles of cell-state-specific enhancers in hematopoiesis
Screen of minimalistic enhancers in blood progenitor cells demonstrates widespread dual activator-repressor function of transcription factors (TFs) and enables the model-guided design of cell-state-sp...
www.cell.com
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Reposted by Boyan Bonev
arnausebe.bsky.social
Arnau Sebé-Pedrós @arnausebe.bsky.social · May 7
Check out our latest work on the evolution of animal genome regulation out today in @nature.com. Nicely summarized below by @ianakim.bsky.social.
www.nature.com/articles/s41...

This is a major output from our ERC-StG project Evocellmap @erc.europa.eu at @crg.eu
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Reposted by Boyan Bonev
epigeneticspod.bsky.social
Epigenetics Podcast @epigeneticspod.bsky.social · Apr 14
In the most recent episode we talked with @boyanbonev.bsky.social from @bonevlab.bsky.social at @epihmgu.bsky.social about his work on neuroepigenetics, focusing on gene regulation, chromatin architecture, and primate epigenome evolution. #epigenetics

Listen here: activemotif.com/podcasts-boy...
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
This was a great collaboration between the @bonevlab.bsky.social and the lab of Amos Tanay, led by Yonatan and Florian with substantial contribution from @silviavangelisti.bsky.social, Faye and Aviezer. If you found this study of interest, please RT, comment and share! All feedback is welcome. 14/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
Code and data to reproduce all figures, or browse and reanalyze, is available at github.com/tanaylab/mmcortex, either separately or in a standalone docker container. You can also explore the data interactively at apps.tanaylab.com/MCV/mmcortex/. 13/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
Finally, we assayed the activity of thousands of CREs isolated from their genomic context across multiple timepoints in vivo using a cell-type-specific massively parallel reporter assay. We showed that cell type-specificity is encoded in the sequence, in agreement with our quantitative model. 12/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
We also show explicitly that NSC methylation has a repressive effect on IPC accessibility, and that cooperativity between proximal CREs is correlated with accessibility both in terms of sequence content and total proximal activation. 11/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
We developed a machine-learning model that integrates sequence (putative TF motifs, dinucleotide content) and epigenomic features (ATAC, methylation, proximal activity) to predict NSC<->IPC specificity of CREs, that yields R^2 = 0.62 on held-out data. 10/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
Moreover, temporally activating CREs in NSCs get compacted significantly closer over time to astrocyte- or NSC-specific TSSs, an effect not observed with IPC TSSs. 9/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
Our Hi-C analysis shows that while overall chromatin topology is conserved across time in NSCs, there are specific hotspots whose differential insulation across time is correlated with the presence or depletion of proximal CREs. 8/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
Temporally activating CREs are significant: they are enriched with astrocyte-specific CREs, and astro CREs undergo extensive demethylation within NSCs across time, in contrast to other cell type-specific CREs. 7/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
We found that ATAC-activating CREs are tightly concomitant with methylation decrease. But the opposite was not true! Deactivating CREs in NSCs stay unmethylated across our time series, and this is not due to absence of DNMTs. 6/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
Furthermore, we were able to identify CREs with dynamic accessibility within cell types, across time. We focused on CREs that either activate/increase accessibility, or deactivate over time in NSCs. 5/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
Our metacell model of ATAC states provides a high-resolution timeline of cis-regulatory element (CRE) accessibility in corticogenesis. We use it to show that CREs specific to corticofugal neurons are activated late in maturation, in stark contrast to callosal projection neuron-specific CREs. 4/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
We show that astrocyte genes in NSCs are upregulated gradually over time, not suddenly, along with erosion of NSC proliferative capacity. This erosion is also correlated with lengthening of the cell cycle, suggesting that NSC fate bias is coupled to the cell cycle. 3/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
We have generated one of the most comprehensive multiome datasets in the context of brain development, integrating time-series measurements of scRNA-seq, scATAC-seq, 5mC methylation and Hi-C of mouse somatosensory cortex across 6 developmental timepoints. 2/14
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boyanbonev.bsky.social
Boyan Bonev @boyanbonev.bsky.social · Apr 4
Can a stem cell change its epigenome while proliferating? In collaboration with the lab of Amos Tanay, we demonstrate that yes, the epigenome of neural stem cells (NSCs) is continuously remodeled, across multiple layers, during mouse corticogenesis. 1/14
www.biorxiv.org/content/10.1...
Neural stem cell epigenomes and fate bias are temporally coordinated during corticogenesis
The cerebral cortex orchestrates complex cognitive functions, yet how its distinct temporal lineages are molecularly patterned during development remains unresolved. Here, we integrate single-cell tra...
www.biorxiv.org
1 14 42
Reposted by Boyan Bonev
ludoritz.bsky.social
Ludovico Rizzuti @ludoritz.bsky.social · Apr 3
I'm happy to share our work on the neurodevelopmental impact of ADNP mutations in ASD and beyond. It has been an exciting ride to share with @alessandrovitriolo.bsky.social, Mariana, and the people of the Testa and Poot Labs.
Full paper here:
www.biorxiv.org/content/10.1...
Thread below 🧵
www.biorxiv.org
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Reposted by Boyan Bonev
kaessmannlab.bsky.social
Kaessmann Lab @kaessmannlab.bsky.social · Mar 16
How does gene regulation shape brain evolution? Our new preprint dives into this question in the context of mammalian cerebellum development! rb.gy/dbcxjz
Led by @ioansarr.bsky.social, @marisepp.bsky.social and @tyamadat.bsky.social, in collaboration with @steinaerts.bsky.social
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Reposted by Boyan Bonev
mareikealbert.bsky.social
mareikealbert.bsky.social @mareikealbert.bsky.social · Mar 13
💫 New preprint from the lab: Comparing great ape cerebral organoids, we found that human-specific morphoregulatory signatures in basal radial glia characterise neocortex evolution. Fantastic work from super-talented PhD student Theresa Schütze!

www.biorxiv.org/content/10.1...
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