Igor Ulitsky
@igorulitsky.bsky.social
2.6K followers 850 following 200 posts
Associate Professor, Weizmann Institute of Science. RNA biologist, interested in what (long) RNA molecules do and how. Father of 4.
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Reposted by Igor Ulitsky
lindorfflarsen.bsky.social
A good day to remember John Gurdon’s school report from his biology master at Eton
igorulitsky.bsky.social
So confused right now. No Tylenol in Israel, yet there is autism. How is it possible?
Reposted by Igor Ulitsky
kurianlab.bsky.social
From the brilliant @akispapantonis.bsky.social and lab
biorxiv-genomic.bsky.social
Variant U1 snRNAs contribute to cell cycle and differentiation control of human iPS cells https://www.biorxiv.org/content/10.1101/2025.09.14.676199v1
Reposted by Igor Ulitsky
Reposted by Igor Ulitsky
nickywhiffin.bsky.social
While I was taking a holiday last week, 2 super exciting preprints dropped, adding to another posted 6 days prior.

These papers describe a remarkable role for *recessive* variants in *RNU2-2* causing developmental and epileptic encephalopathy

🧵 by the amazing @christeldepienne.bsky.social 👇

1/3
Reposted by Igor Ulitsky
lcochella.bsky.social
Our work on the function of miR-51/miR-100 is out! miR-100 is widely conserved across eumetazoans but its function has been mysterious. Emilio Santillán found in worms it regulates signaling and extracellular matrix genes, some of which seem to be conserved targets! www.science.org/doi/10.1126/...
An ancient and essential miRNA family controls cellular interaction pathways in C. elegans
A microRNA that arose at the origin of eumetazoans regulates cell adhesion and signaling in C. elegans through conserved targets.
www.science.org
igorulitsky.bsky.social
Any tips on reducing variatoon between Cut&Run libraries to make comparison between conditions better?
Reposted by Igor Ulitsky
hitenmadhani.bsky.social
Wait til they hear about mating type switching in yeast.
igorulitsky.bsky.social
The problem in your question is that you assume that most geopolitical conflicts indeed have "good guys" vs "bad guys", empire vs the rebels. Most conflicts more complex than that.
Reposted by Igor Ulitsky
biorxivpreprint.bsky.social
A lncRNA drives developmentally-timed decay of all members of an essential microRNA family https://www.biorxiv.org/content/10.1101/2025.07.30.667716v1
igorulitsky.bsky.social
Now out in @narjournal.bsky.social - BAHCC1 promotes gene expression in neuronal cells by antagonizing SIN3A–HDAC1
Reposted by Igor Ulitsky
fusionconf.bsky.social
Explore RNA's role in epigenetics, DNA repair, transcription & genome organisation - directly with leaders from academia & industry at #GenReg26!

Remaining talks to be filled from submissions - register & submit by 04 Sep 2025 to join us in Mexico.

Speakers, details & registration➡️ bit.ly/46JQbze
Reposted by Igor Ulitsky
marcbuhler.bsky.social
Remodeling Activity of ChAHP Restricts Transcription Factor Access to Chromatin
Transcription in eukaryotes is regulated by chromatin-based mechanisms that control nucleosome occupancy, chromatin modifications, and transcription factor binding. We have previously shown that the transcription factor ADNP forms the ChAHP complex with the chromatin remodeler CHD4 and HP1 proteins, acting as a site-specific regulator of transcription and antagonist of CTCF binding. However, the molecular basis of these functions remained unclear. Here, we demonstrate that the CHD4 subunit is essential to antagonize CTCF and silence transcription of transposons, while HP1 proteins are dispensable. Although the remodeling activity of CHD4 is not required for ChAHP chromatin association, it is critical for both transposon repression and CTCF antagonism. Our findings support a model wherein ADNP recruits chromatin remodeling activity in a sequence-specific manner, enabling transcriptional control and local modulation of chromatin architecture. ### Competing Interest Statement The Friedrich Miescher Institute for Biomedical Research (FMI) receives significant financial contributions from the Novartis Research Foundation. Published research reagents from the FMI are shared with the academic community under a Material Transfer Agreement (MTA) having terms and conditions corresponding to those of the UBMTA (Uniform Biological Material Transfer Agreement). Novartis Research Foundation, n.a. Swiss National Science Foundation, grant 310030_188835
www.biorxiv.org
Reposted by Igor Ulitsky
kurianlab.bsky.social
Seminar Alert:

Prof. Igor Ulitsky, PhD
Weizmann Institute of Science

Date: 21.07.2025. 3 pm

Venue: Faculty of Medicine, Goethe University, Seminar room 1, Haus 22 (S22-1)

@igorulitsky.bsky.social @cpi-exstra.bsky.social @scale-cluster-ffm.bsky.social @goetheuni.bsky.social
igorulitsky.bsky.social
There is no such thing replacing people's army of a country with another army, it makes so sense. Opposing Israel is fine, but saying that Israel needs to replace its army with another army makes 0 sense
igorulitsky.bsky.social
or the direction taken by the goverment etc. These are very different things. It is much easier to make judgement from across the ocean than to actually live in a country surrounded by counties and organizations whose stated goal is to eliminate it
igorulitsky.bsky.social
Yes, they can refuse in principle, and very small numbers (dozens) do so every year. This is overall a fringe portion of the society, because people understand that if there is no IDF, there is no way for Jews to live here. Many more people, object to specific actions that the army is taking
igorulitsky.bsky.social
"Death of IDF as an institution" --> "No more Israel" is a statement 99% of Israelis will agree with.
igorulitsky.bsky.social
I'm sure 100% of your Israeli friends who have issues with specific actions by our army are not ok at all with "Death to the IDF" chants. IDF is not a militia, its the people's army of Israel
igorulitsky.bsky.social
Yes, I also disagree with the government policies, and with specific documented actions of specific soldiers, and I hope the war ends soon in an agreeable way. Yet me, all my family served in the IDF, and all my kids will serve in the IDF, so to me "Death to the IDF = Death to the Israelis", sorry