Daniel Ibrahim
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danielibrahim.bsky.social
Daniel Ibrahim
@danielibrahim.bsky.social
Group Leader @ BIH Berlin and MPI Molecular Genetics. I play around with DNA because I‘d like to know how the genome functions.
Pinned
What is a promoter? And how does it work?

We very happy to share our latest work trying to understand enhancer-promoter compatibility.
I am very excited about the results of @blanka-majchrzycka.bsky.social, which changed the way I think about promoters

www.biorxiv.org/content/10.1...
Enhancer-promoter compatibility is mediated by the promoter-proximal region
Gene promoters induce transcription in response to distal enhancers. How enhancers specifically activate their target promoter while bypassing other promoters remains unclear. Here, we find that the p...
www.biorxiv.org
Reposted by Daniel Ibrahim
We recently reported that promoter competition can contribute to the robust insulation of gene regulatory domains (www.nature.com/articles/s41...).
We now offer a 4-years PhD contract to investigate whether the dirsuption of this regulatory mechanism can lead to congenital defects. More details 👇
November 6, 2025 at 6:37 PM
Reposted by Daniel Ibrahim
🚀 WE ARE HIRING 3️⃣ Independent Group Leaders for #mdcBerlin's new cutting-edge Bioengineering Cluster within our Biomedical Engineering Program.

Lead cutting-edge research at the interface of biology, engineering, and medicine in Berlin.

👉 Apply now: www.mdc-berlin.de/career/jobs/...
October 9, 2025 at 11:00 AM
Reposted by Daniel Ibrahim
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....
October 27, 2025 at 11:49 AM
Reposted by Daniel Ibrahim
What happens when you change the promoter of my favorite gene? Sox9?
October 25, 2025 at 8:04 AM
Reposted by Daniel Ibrahim
My new lab at the @molgen.mpg.de will be following up on some of the nuclear organization aspects of ecDNA so please do reach out if this is of interest :)
October 21, 2025 at 9:43 AM
Reposted by Daniel Ibrahim
Our publication is out today!Big Thanks go to my amazing collaborators: @sedonamurphy.bsky.social for her imaging brilliance and @mattjones.bsky.social for his computational support.They both saw the potential in this project and helped me to explore what turned out to be an exciting discovery.
October 21, 2025 at 1:34 PM
Reposted by Daniel Ibrahim
📢 We are hiring!
👩🏾‍⚕️Research technician/Lab manager
📍 @cabd-upo-csic.bsky.social , Sevilla, Spain
🧬 Gene regulation in animal development & evolution

Check the details 👇 & join us!
drive.google.com/file/d/1cZJi...

#ResearchTechnician #Zebrafish #GeneRegulation #DevelopmentalBiology
October 15, 2025 at 3:00 PM
Reposted by Daniel Ibrahim
Out now! 🎉 Check the thread & preprint to see why we think E–P specificity is real in mammals — and, well, a few other interesting things popped up too 👀
Huge thanks to @danielibrahim.bsky.social, @arnaudkr.bsky.social & @stemundi.bsky.social and fantastic people in their labs — what a journey! 🧪🔬
October 17, 2025 at 5:50 AM
Reposted by Daniel Ibrahim
super cool to see this out! looking forward to now read the details! Congratulations, Yad and @mmasoura.bsky.social
October 16, 2025 at 6:31 PM
Reposted by Daniel Ibrahim
What mediates enhancer-promoter compatibility? Get some answers & learn about the important of the promoter-proximal
region here 👇
Congratulations @blanka-majchrzycka.bsky.social @danielibrahim.bsky.social on this beautiful work!!!!🥂🥂
October 16, 2025 at 3:23 PM
Reposted by Daniel Ibrahim
Yay! Congratulations @blanka-majchrzycka.bsky.social and @danielibrahim.bsky.social ! Good to see this beautiful dissection out !
October 16, 2025 at 4:34 PM
Reposted by Daniel Ibrahim
A genetic engineering tour de force by @blanka-majchrzycka.bsky.social. Systematic dissection of promoter function in relevant genomic context! Spoiler, promoter matters! Happy we could help on this!
October 16, 2025 at 4:05 PM
What is a promoter? And how does it work?

We very happy to share our latest work trying to understand enhancer-promoter compatibility.
I am very excited about the results of @blanka-majchrzycka.bsky.social, which changed the way I think about promoters

www.biorxiv.org/content/10.1...
Enhancer-promoter compatibility is mediated by the promoter-proximal region
Gene promoters induce transcription in response to distal enhancers. How enhancers specifically activate their target promoter while bypassing other promoters remains unclear. Here, we find that the p...
www.biorxiv.org
October 16, 2025 at 3:06 PM
a really cool work! everyone check it out! congratulations 🎉👏🏽
October 16, 2025 at 1:55 PM
If you’re interested in a PhD that explores the ins and outs of genomes and the nucleus - don’t look further but apply here!!!
It is excellent 👌
🚨 Please share! We are seeking motivated PhD students who wish to work at the intersection of molecular life sciences and computational sciences.
#IMPRS #IMPRSBAC @freieuniversitaet.bsky.social @maxplanck.de
Check out our projects and apply by Jan 7th, 2026!
www.molgen.mpg.de/IMPRSPhDproj...
October 9, 2025 at 12:49 PM
Reposted by Daniel Ibrahim
⚠️ Paper alert: Using a novel CRISPR screening approach, we mapped the entire regulatory network controlling Xist—key for X-chromosome inactivation.
👉 We discover how sex and development signals are decoded at a single gene locus.
www.nature.com/articles/s41...
👇 Bluetorial
Reporter CRISPR screens decipher cis-regulatory and trans-regulatory principles at the Xist locus - Nature Structural & Molecular Biology
Here Schwämmle et al. develop CRISPR reporter screens to map transcription-factor-regulatory element interactions at the Xist locus, revealing a two-step mechanism integrating developmental and X-dosage signals to initiate X-chromosome inactivation.
www.nature.com
October 6, 2025 at 1:02 PM
Reposted by Daniel Ibrahim
⚡⚡Excited to announce I'll be starting my lab at the Max Planck Institute of Molecular Genetics (@molgen.mpg.de) in Berlin in December! Leaving sunny California to join a fantastic environment with colleagues who do super cool work.
🔬🦠I'm hiring at all levels! 🔬🦠Check: www.molgen.mpg.de/fueyo-lab
October 6, 2025 at 1:46 PM
Reposted by Daniel Ibrahim
🚨JOB ALERT🚨

FRIENDS PLEASE SPREAD and RT

We are building a small expert team within the @bokelab.bsky.social at @crg.eu @prbb.org to investigate fundamental questions in oocyte cell biology, focusing on how proteostasis regulation influences dormancy and fertility.

See below 2 calls👇
October 2, 2025 at 11:00 AM
Reposted by Daniel Ibrahim
Today in @nature.com, we present our work leveraging functional genomics and human blastoids to uncover a human-specific mechanism in preimplantation development driven by the endogenous retrovirus HERVK.
Special thanks to the reviewers whose comments improved our manuscript a lot! rdcu.be/eI3tD
A human-specific regulatory mechanism revealed in a pre-implantation model
Nature - Genetic manipulation of blastoids reveals the role of recently emerged transposable elements and genes in human development.
rdcu.be
October 1, 2025 at 6:08 PM
Reposted by Daniel Ibrahim
Paris-Berlin sleeper: low carbon, 2 years old, constantly full, but currently losing SNCF a few million EUR/yr

Intl Jet fuel tax exemptions are 80 years old and cost the EU 22 million EUR/yr for the Paris-Berlin route alone.

And you're cutting... the sleeper?

www.theguardian.com/travel/2025/...
It’s goodnight Vienna as Paris sleeper train to Austria and Berlin hit by cuts
Some Nightjet services suspended from mid-December after French withdrawal amid public budget crisis
www.theguardian.com
September 29, 2025 at 9:31 PM
Reposted by Daniel Ibrahim
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🧵👇
September 24, 2025 at 9:45 PM
Reposted by Daniel Ibrahim
✨Exciting news: the main story of my PhD is out in Science!

Together with Christine Moene @cmoene.bsky.social, we explored what happens when you scramble the genome—revealing how Sox2’s position shapes enhancer activation.

📖 Read the full story here: www.science.org/doi/10.1126/...
Functional maps of a genomic locus reveal confinement of an enhancer by its target gene
Genes are often activated by enhancers located at large genomic distances, and the importance of this positioning is poorly understood. By relocating promoter-reporter constructs into thousands of alt...
www.science.org
September 19, 2025 at 2:09 PM
This has been such a great collaboration with @dlwagnerlabs.bsky.social! You really need to check it out

One-pot PASTA 🍝 - a one-step protocol to knock-in large transgenes.
I feel tempted to think about one-pot PIZZA 🍕 next!

First authors Isabell and @therealjonaskath.bsky.social were amazing!!
September 19, 2025 at 3:37 PM
Reposted by Daniel Ibrahim
🚀 In preparation for releasing two new stories, @therealjonaskath.bsky.social is revisiting the journey so far—sharing the lab’s last six papers.

What a ride it’s been… 🙌🧬🧪🧫
Lab History pt. 1
2022 – 🚨 Our first paper is out! 🚨

virus-free CAR knock-in to TRAC locus of primary human T cells with CRISPR-HDR.

➡️ >50% TRAC CD19-CAR T cells through pharmacological modulation

🧬 A key step toward scalable, non-viral CAR-T cell therapies.

DOI: 10.1016/j.omtm.2022.03.018
September 18, 2025 at 5:05 AM
Reposted by Daniel Ibrahim
Very interesting new @wbickmor.bsky.social commentary on the mechanistic mystery that is very distal enhancer-promoter interactions www.nature.com/articles/s41...
Is enhancer-driven gene regulation all wrapped up? - Nature Reviews Genetics
In this Comment, Wendy Bickmore discusses mechanistic models of how 3D genome organization facilitates communication between distant enhancers and their target promoters to regulate gene expression.
www.nature.com
September 17, 2025 at 12:41 PM