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Posts by Ufuk Günesdogan

🚨The abstract submission deadline is this Friday 17 April 2026.

1 week ago 7 5 0 0
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De novo formation of cis-regulatory contacts in the absence of NIPBL-driven chromatin loop extrusion - Nature Genetics The authors deplete the cohesin activator NIPBL during the mitosis-to-G1-phase transition. They observe that structural loop formation is impaired proportionally to loop length, while gene activation ...

De novo formation of cis-regulatory contacts in the absence of NIPBL-driven chromatin loop extrusion
www.nature.com/articles/s41...

1 week ago 5 2 0 0
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We are hiring POSTDOC now!🚨please repost! Fully-funded 5-year position 👩🏻‍🔬👨‍🔬🧬Looking forward to your application!✉️

4 weeks ago 53 49 0 0
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Friends Davor Solter and Azim Surani receiving the wonderful Paul Ehrlich and Ludwig Darmstaedter Prize for Genomic Imprinting👏 👍 @Frankfurt Germany. With official talks from politicians using words like Education, Knowledge, Democracy 🙏 @maxplanck.de @gurdoninstitute.bsky.social

1 month ago 27 10 0 0
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Enhancer-gene specificity in development and disease Summary: This Review discusses recent insights into the factors controlling enhancer specificity and how this might help us understand the genetic basis of human disease.

Enhancers are genetic regions that promote the activation of neighbouring genes. @radaiglesiaslab.bsky.social asks how long-range enhancers maintain specificity by constructing synthetic gene landscapes and exploring how they affect gene activity. #gfe2026

Alvaro's @dev-journal.bsky.social Review⤵

1 month ago 7 6 1 0

Great to see this work out from our neighbours @mrc-lms.bsky.social driven by Noura Maziak @vaquerizasjm.bsky.social!

With Pico-C they reveal a modular regulatory logic driving genome establishment - congrats to all authors!

1 month ago 5 1 0 0
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📢Magda Koziol @epigenome.bsky.social will be speaking at the DPZ @primatenzentrum.bsky.social in Göttingen this Wednesday.
🗓️11 March ⏰13:00
Join us for an exciting seminar! 👇👇

1 month ago 2 1 0 1
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Figure 1.(A) Classical gel electrophoresis experiments showing mono-, di-, tri-, tetra-, and further multinucleosome bands upon chromatin digestion. (B) The nucleosome repeat length (NRL) is defined as the genomic distance between the centres of two neighbouring nucleosomes.

Figure 1.(A) Classical gel electrophoresis experiments showing mono-, di-, tri-, tetra-, and further multinucleosome bands upon chromatin digestion. (B) The nucleosome repeat length (NRL) is defined as the genomic distance between the centres of two neighbouring nucleosomes.

Figure 2.Nucleosome mapping using MNase-seq versus ATAC-seq. (A) In MNase-seq, nucleosomes in both open and tightly packed genomic regions are accessible to digestion. MNase preferentially cleaves DNA between nucleosomes and digests DNA until it encounters a histone octamer, which provides a footprint of nucleosome-protected DNA regions. (B) Bulk MNase-seq results in averaged maps across millions of cells, effectively capturing all possible nucleosome positioning configurations. (C) Single-cell MNase-seq (scMNase-seq) results in a noisier and sparser signal. The resulting footprints still represent nucleosome-protected regions, but not all nucleosomes are represented. (D) In ATAC-seq, open regions can be accessed by the enzyme Tn5 transposase, which can insert primers in regions free from the binding of nucleosomes and transcription factors (TFs). (E) For open chromatin regions, nucleosome maps can be obtained from ATAC-seq similar to MNase-seq. (F) Closed, tightly packed chromatin regions may be less represented in ATAC-seq nucleosome maps.

Figure 2.Nucleosome mapping using MNase-seq versus ATAC-seq. (A) In MNase-seq, nucleosomes in both open and tightly packed genomic regions are accessible to digestion. MNase preferentially cleaves DNA between nucleosomes and digests DNA until it encounters a histone octamer, which provides a footprint of nucleosome-protected DNA regions. (B) Bulk MNase-seq results in averaged maps across millions of cells, effectively capturing all possible nucleosome positioning configurations. (C) Single-cell MNase-seq (scMNase-seq) results in a noisier and sparser signal. The resulting footprints still represent nucleosome-protected regions, but not all nucleosomes are represented. (D) In ATAC-seq, open regions can be accessed by the enzyme Tn5 transposase, which can insert primers in regions free from the binding of nucleosomes and transcription factors (TFs). (E) For open chromatin regions, nucleosome maps can be obtained from ATAC-seq similar to MNase-seq. (F) Closed, tightly packed chromatin regions may be less represented in ATAC-seq nucleosome maps.

Figure 5.Molecular mechanisms affecting nucleosome spacing. (A) Linker histones H1 and nonhistone chromatin proteins which compete with H1s and modulate nucleosome spacing through structural and electrostatic mechanisms. (B) Chromatin remodellers actively reposition nucleosomes following context-dependent rules. (C) Cell state-dependent chromatin boundaries formed by CTCF and other structural proteins, as well as associated recruitment of chromatin remodellers which space nucleosomes. (D) Gene activity associated with remodeller action and RNA polymerases transcribing through the nucleosomes, leading to smaller distances between nucleosomes in regulatory regions and gene bodies. (E) DNA sequence repeats of different types.

Figure 5.Molecular mechanisms affecting nucleosome spacing. (A) Linker histones H1 and nonhistone chromatin proteins which compete with H1s and modulate nucleosome spacing through structural and electrostatic mechanisms. (B) Chromatin remodellers actively reposition nucleosomes following context-dependent rules. (C) Cell state-dependent chromatin boundaries formed by CTCF and other structural proteins, as well as associated recruitment of chromatin remodellers which space nucleosomes. (D) Gene activity associated with remodeller action and RNA polymerases transcribing through the nucleosomes, leading to smaller distances between nucleosomes in regulatory regions and gene bodies. (E) DNA sequence repeats of different types.

Figure 6. Examples of NRL changes in biological systems. (A) Cell differentiation leads to NRL changes between different cell types, e.g. mouse dorsal root ganglia neurons (NRL ∼165 bp) versus cortical astrocytes (NRL ∼183 bp) [175]. Schematic cell shapes are adapted from an image created in BioRender (https://BioRender.com/89trj2t). (B) Paired normal versus tumour breast tissues show NRL shortening in cancer (figure adapted from [36] under the CC BY 4.0 licence (https://creativecommons.org/licenses/by/4.0/)). (C) Nucleosome positioning derived from cfDNA of human volunteers shows NRL increase with age (figure reprinted from [79] under the CC BY 4.0 licence (https://creativecommons.org/licenses/by/4.0/)).

Figure 6. Examples of NRL changes in biological systems. (A) Cell differentiation leads to NRL changes between different cell types, e.g. mouse dorsal root ganglia neurons (NRL ∼165 bp) versus cortical astrocytes (NRL ∼183 bp) [175]. Schematic cell shapes are adapted from an image created in BioRender (https://BioRender.com/89trj2t). (B) Paired normal versus tumour breast tissues show NRL shortening in cancer (figure adapted from [36] under the CC BY 4.0 licence (https://creativecommons.org/licenses/by/4.0/)). (C) Nucleosome positioning derived from cfDNA of human volunteers shows NRL increase with age (figure reprinted from [79] under the CC BY 4.0 licence (https://creativecommons.org/licenses/by/4.0/)).

Nucleosome aficionados! Our new review "Nucleosome spacing across cell types, diseases, and ages" is out in NAR: academic.oup.com/nar/article/...

A huge effort to pull together what we’ve learned about nucleosome spacing in many systems. Enjoy!
@milena-bikova.bsky.social @chrsclrksn.bsky.social

1 month ago 47 19 0 1
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Considerations for the future of in vitro gametogenesis in fertility care - @hannahlandecker.bsky.social @uclacrshe.bsky.social @uclamcdb.bsky.social @uclastemcell.bsky.social go.nature.com/4l2e9en

1 month ago 4 4 0 0
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Institut Pasteur (@pasteur.fr) is recruiting new young PIs to open new groups in the Institute. Deadline is February 9th! Don't miss the opportunity!

2 months ago 34 49 0 0
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Systems Biology: Global Regulation of Gene Expression Cold Spring Harbor Laboratory Meetings & Courses -- a private, non-profit institution with research programs in cancer, neuroscience, plant biology, genomics, bioinformatics.

Deadline TODAY January 23 - please join the Systems Biology: Global Regulation of Gene Expression meeting in beautiful @cshlnews.bsky.social (March 11-14). Register and submit your abstract here: meetings.cshl.edu/meetings.asp.... Please Repost!

2 months ago 2 2 0 0

Do not miss this great symposium in Utrecht! Stellar speakers, free registration and fun audience in a great institute!! 🤩 Registration is open now

4 months ago 7 4 0 0
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An integrated view of the structure and function of the human 4D nucleome - Nature The 4D Nucleome Project demonstrates the use of genomic assays and computational methods to measure genome folding and then predict genomic structure from DNA sequence, facilitatin...

A major output of the 4D Nucleome project appeared today. This is the joint effort of many scientists working together and (publicly) sharing data and results for several years. We hope this is of interest to many genome biologists!

www.nature.com/articles/s41...

4 months ago 109 55 2 5
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Modelling co-development between the somites and neural tube in human trunk-like structures - Nature Cell Biology Makwana, Tilley et al. generate human stem cell-based trunk-like structures approximating Carnegie stage 13–14 of development. They use them to model and study the development of the thoracic and lumbar trunk.

Lovely little pre-Christmas present to see this out @natcellbio.nature.com! Some 🔥 new results in here since the biorvix incl (1) a new RARE-GFP reporter ✳️🙌, (2) additional NMP quantification 🔢, (3) no neural tube patterning on RA inhibition 🙅 etc. Enjoy! 😍 www.nature.com/articles/s41...

4 months ago 88 33 5 0
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Reversibility, regulation, and the community of development: the legacy of Sir John B. Gurdon - Nature Communications Nature Communications - Reversibility, regulation, and the community of development: the legacy of Sir John B. Gurdon

We have just published a tribute to John Gurdon, reflecting on his scientific legacy and the profound influence he had on generations of developmental biologists.

The piece is available open access in Nature Communications:
www.nature.com/articles/s41...

4 months ago 59 26 3 0
Doctoral hat surrounded by icons representing genome science fields: math, bioimaging, genomics, bioinformatics & more. Logos for Uni Göttingen, GönomiX & IMPRS-GS.

Doctoral hat surrounded by icons representing genome science fields: math, bioimaging, genomics, bioinformatics & more. Logos for Uni Göttingen, GönomiX & IMPRS-GS.

Want to shape the future of genome science? 🧬 PhD positions available at Max Planck Institute & Uni Göttingen (IMPRS-GS/GönomiX)! Join a vibrant, interdisciplinary research community. Apply by Jan 14, 2026: www.uni-goettingen.de/de/applicati... #GenomeScience #Research

4 months ago 6 5 0 0
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We're very excited to welcome Dr. @sumrubayin.bsky.social from the @gurdoninstitute.bsky.social onto the next episode of the podcast! 🎉

Her lab studies the mouse #cerebellum to better understand the regulation of #neural stem cell behavior. 🧠

5 months ago 14 8 0 1

Our latest paper on comparative analysis of HiChIP data is now online! HiChIP is one of the most useful/practical assays to profile 3D genome organization and chromatin loops but has its challenges in the data analysis especially when it comes to comparative analysis.

5 months ago 12 3 1 0
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Frontiers in Stem Cell Innovation 2026 Join leading academics and industry professionals exploring cutting-edge stem cell technologies and disease modelling for drug discovery

🚨 Exciting conference for stem cell aficionados!
‘Frontiers in Stem Cell Innovation’ will bring together experts in stem cell biology from academia & industry to discuss key developments as well as challenges in regenerative medicine and disease modelling.
fisci2026.eventbrite.co.uk
Please repost 🙏

5 months ago 4 5 1 0
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Happy to share our latest publication, in which we show that the arrangement of nucleosomes around CTCF sites contributes to higher-order organisation of chromatin into TADs: www.embopress.org/doi/full/10....

5 months ago 71 31 0 2
bioRxiv - An unbiased survey of distal element-gene regulatory interactions with direct-capture targeted Perturb-seq

bioRxiv - An unbiased survey of distal element-gene regulatory interactions with direct-capture targeted Perturb-seq

New preprint from our lab!

What can we learn about the properties of gene regulatory elements by CRISPR’ing a random set of accessible sites in human cells?

Find out here: www.biorxiv.org/content/10.1...

👇

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7 months ago 58 17 1 1
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Thrilled to share that our Group Leader Prof. Azim Surani, together with Prof. Davor Solter, has been awarded the 2026 Paul Ehrlich & Ludwig Darmstaedter Prize 🎉 for discovering genomic imprinting—a breakthrough that reshaped genetics and launched modern epigenetics.

7 months ago 37 13 0 0
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Most read, I hear!
Here is your chance to read what @mariekeoudelaar.bsky.social and I had in mind when writing this together.

7 months ago 11 4 0 0
Dear Fly Community,

In May 2025, the NIH terminated all grant funding to Harvard University, including the NHGRI grant that supported FlyBase. This grant also funded FlyBase teams at Indiana University (IU) and the University of Cambridge (UK), and as a result, their subawards were also canceled.

The Cambridge team has secured support for one to two years through generous donations from the European fly community, emergency funding from the Wellcome Trust, and support from the University of Cambridge. At IU, funding has been secured for one year thanks to reserve funds from Thom Kaufman and a supplement from ORIP/NIH to the Bloomington Drosophila Stock Center (BDSC).

Unfortunately, the situation at Harvard is far more critical. Harvard University had supported FlyBase staff since May but recently denied a request for extended bridge funding. As a result, all eight employees (four full-time and four part-time) were abruptly laid off, with termination dates ranging from August to mid-October depending on their positions. In addition, our curator at the University of New Mexico will leave her position at the end of August. This decision came as a shock, and we are urgently pursuing all possible funding options.

To put the need into perspective: although FlyBase is free to use, it is not free to make. It takes large teams of people and millions of dollars a year to create FlyBase to support fly research (the last NHGRI grant supported us with more than 2 million USD per annum).

To help sustain FlyBase operations, we have been reaching out to you to ask for your support. We have set up a donation site in Cambridge, UK, to which European labs have and can continue to contribute, and a new donation site at IU to which labs in the US and the rest of the world can contribute. We urge researchers to work with their grant administrators to contribute to FlyBase via these sites if at all possible, as more of the money will go to FlyBase. However, we appreciate that some fu…

Dear Fly Community, In May 2025, the NIH terminated all grant funding to Harvard University, including the NHGRI grant that supported FlyBase. This grant also funded FlyBase teams at Indiana University (IU) and the University of Cambridge (UK), and as a result, their subawards were also canceled. The Cambridge team has secured support for one to two years through generous donations from the European fly community, emergency funding from the Wellcome Trust, and support from the University of Cambridge. At IU, funding has been secured for one year thanks to reserve funds from Thom Kaufman and a supplement from ORIP/NIH to the Bloomington Drosophila Stock Center (BDSC). Unfortunately, the situation at Harvard is far more critical. Harvard University had supported FlyBase staff since May but recently denied a request for extended bridge funding. As a result, all eight employees (four full-time and four part-time) were abruptly laid off, with termination dates ranging from August to mid-October depending on their positions. In addition, our curator at the University of New Mexico will leave her position at the end of August. This decision came as a shock, and we are urgently pursuing all possible funding options. To put the need into perspective: although FlyBase is free to use, it is not free to make. It takes large teams of people and millions of dollars a year to create FlyBase to support fly research (the last NHGRI grant supported us with more than 2 million USD per annum). To help sustain FlyBase operations, we have been reaching out to you to ask for your support. We have set up a donation site in Cambridge, UK, to which European labs have and can continue to contribute, and a new donation site at IU to which labs in the US and the rest of the world can contribute. We urge researchers to work with their grant administrators to contribute to FlyBase via these sites if at all possible, as more of the money will go to FlyBase. However, we appreciate that some fu…

https://wiki.flybase.org/wiki/FlyBase:Contribute_to_FlyBase

Our immediate goals are:

1. To maintain core curation activities and keep the FlyBase website online

2. To complete integration with the Alliance of Genome Resources (The Alliance).

Integration with the Alliance is essential for FlyBase’s long-term sustainability. For nearly a decade, NHGRI/NIH has supported the unification of Model Organism Databases (MODs) into the Alliance, which we aim to achieve by 2028. Therefore, securing bridge funding to sustain FlyBase over the next three years is crucial for successful integration and the long-term access to FlyBase data.

At present, our remaining funds will allow us to keep the FlyBase website online for approximately one more year. Beyond that, its future is uncertain unless new funding is secured. We will, of course, continue pursuing additional grant opportunities as they arise.

Given the uncertainty of future NIH or alternative funding sources, we are relying on the Fly community for support. Your contributions will directly help us retain the staff needed to complete this transition and to secure ongoing fly data curation into the Alliance beyond 2028.

We at FlyBase are incredibly grateful for the outpouring of support from the community during this challenging time. Your encouragement has strengthened our resolve and underscores how vital this resource remains to Drosophila research worldwide.

Sincerely,
The FlyBase Team

https://wiki.flybase.org/wiki/FlyBase:Contribute_to_FlyBase Our immediate goals are: 1. To maintain core curation activities and keep the FlyBase website online 2. To complete integration with the Alliance of Genome Resources (The Alliance). Integration with the Alliance is essential for FlyBase’s long-term sustainability. For nearly a decade, NHGRI/NIH has supported the unification of Model Organism Databases (MODs) into the Alliance, which we aim to achieve by 2028. Therefore, securing bridge funding to sustain FlyBase over the next three years is crucial for successful integration and the long-term access to FlyBase data. At present, our remaining funds will allow us to keep the FlyBase website online for approximately one more year. Beyond that, its future is uncertain unless new funding is secured. We will, of course, continue pursuing additional grant opportunities as they arise. Given the uncertainty of future NIH or alternative funding sources, we are relying on the Fly community for support. Your contributions will directly help us retain the staff needed to complete this transition and to secure ongoing fly data curation into the Alliance beyond 2028. We at FlyBase are incredibly grateful for the outpouring of support from the community during this challenging time. Your encouragement has strengthened our resolve and underscores how vital this resource remains to Drosophila research worldwide. Sincerely, The FlyBase Team

The community of Drosophila researchers is amazing, mutually supportive and collaborative. Right now a key resource for our community, @flybase.bsky.social , is threatened by the cancellation of its NIH grant and is seeking community help in raising short term funds 1/n 🧪 please share

7 months ago 150 127 1 6
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Berlin Organoid Symposium - News - BIH at Charité The Berlin Organoid Symposium will highlight recent advances in the field, covering topics from fundamental organoid biology to translational applications. By uniting scientists from various instituti...

So, we (Dylan Liabeuf and Anastasiia Maksiuk) are organising the first Berlin symposium on organoids. The objective is to bring together the Berlin organoid community and to develop further interactions.

Info:
www.bihealth.org/en/notices/b...

Free registration:
www.bihealth.org/en/news/even...

8 months ago 19 7 1 0
H3K4me3 amplifies transcription at intergenic active regulatory elements A biweekly scientific journal publishing high-quality research in molecular biology and genetics, cancer biology, biochemistry, and related fields

New paper on the role of H3K4me3 at enhancers! We (led by Haoming Yu) used dCas9 epigenome editing to add H3K4me3 to intergenic enhancers. This was (1) sufficient to turn up transcription at open, active regions and (2) has no effect on target gene transcription. genesdev.cshlp.org/content/earl...

8 months ago 84 33 3 1
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Enhancer remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm Correct patterning of emerging tissues in the developing embryo is essential for the formation of functional organ systems. Using genetic tools for controlled protein depletion, Ee et al. identify the...

Excited to share our new study in @cp-devcell.bsky.social dissecting how the brain-associated transcription factor OTX2 drives anteriorization of the mammalian gut by enhancer remodeling using stem cell-based models. #development #enhancers #patterning #stemcells

www.cell.com/developmenta...

8 months ago 18 9 1 0

Great honor to be nominated as one of the top 10 Falling Walls Foundation Science Breakthroughs of the Year 2025 in the Life Sciences. A big thank you to @ovarylab.bsky.social & @tabeamarx.bsky.social for their outstanding contributions, & to everyone else who helped move this project forward.

8 months ago 8 1 0 0
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Synthetic engineering demonstrates that synergy among enhancers involves an increase in transcriptionally productive enhancer-gene contacts Enhancers are non-coding cis-regulatory elements that control the expression of distally located genes in a tissue- and time-specific manner. Recent studies indicate that enhancers can differ in their...

Excited to share the latest work from the lab led by @eharo84.bsky.social, in which we have used synthetic biology to explore the mechanisms by which different types of long-range enhancers ensure robust and precise developmental gene expression

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

8 months ago 66 37 5 2

🤩 Very excited to share our new work! We have derived euploid and aneuploid trophoblast organoids and extra-embryonic mesoderm cell lines from early human embryos. In doing so, we have characterised the tissue requirements for their specification. If you want to know more, continue reading….

8 months ago 37 11 1 0
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