Artem Yashchenko's Avatar

Artem Yashchenko

@artemyashchenko.bsky.social

Cell biologist studying retina and gene regulation using #organoids and #machinelearning PhD Student in the MCB program at the University of Washington/Seattle Children’s Research Institute He/Him | Views/posts are my own

247 Followers  |  393 Following  |  15 Posts  |  Joined: 01.12.2024  |  2.302

Latest posts by artemyashchenko.bsky.social on Bluesky

Europe is stepping up, helping Ukraine for the right moral reasons and helping their mutual economies.

27.10.2025 13:55 — 👍 11    🔁 1    💬 0    📌 0
BMP signaling-dependent dorsal-to-ventral gradient of PAX3/7 transcriptional activity revealed by the P34::tk::LacZ reporter. Left: expression patterns of neural progenitor (NP) and interneuron (IN) TF markers in the developing spinal cord. Right: Immunostaining for β-galactosidase (β-gal; red/grey), GFP (blue/grey) and either OLIG3 (green/grey) or pSMAD1/5/9 (green/grey) on transverse sections of E9.0 (bottom) and E9.5 (top) P34::tk::LacZ; Pax3+/GFP spinal cords at brachial level. Black and white panels show magnified views of the boxed region.

BMP signaling-dependent dorsal-to-ventral gradient of PAX3/7 transcriptional activity revealed by the P34::tk::LacZ reporter. Left: expression patterns of neural progenitor (NP) and interneuron (IN) TF markers in the developing spinal cord. Right: Immunostaining for β-galactosidase (β-gal; red/grey), GFP (blue/grey) and either OLIG3 (green/grey) or pSMAD1/5/9 (green/grey) on transverse sections of E9.0 (bottom) and E9.5 (top) P34::tk::LacZ; Pax3+/GFP spinal cords at brachial level. Black and white panels show magnified views of the boxed region.

How do pleiotropic TFs generate organized diversity in developing tissues? @spinalorga.bsky.social shows that PAX3 & PAX7 organize #SpinalCord by acting as both repressors & pioneer activators, regulated by #morphogens to ensure precise neural subtype specification @plosbiology.org 🧪 plos.io/4qumsla

27.10.2025 17:25 — 👍 20    🔁 10    💬 0    📌 0
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Cracking the code of the non-coding genome via allele-specific genomics?
Can we link non-coding elements—like lncRNAs and enhancers—to their protein-coding target genes, and in doing so, connect overlapping non-coding disease variants to their protein-coding counterparts?

24.10.2025 02:43 — 👍 28    🔁 12    💬 2    📌 1
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Promoter-proximal gatekeepers restrict pleiotropic enhancer inputs to achieve tissue specificity Developmental enhancers are central regulatory elements that can activate multiple genes, yet how they selectively regulate one gene over its neighbours remains unclear. Using the Drosophila twist E3 ...

Ever wondered what drives enhancer-promoter specificity? Why would an enhancer activate one gene rather than another neighboring one?

Check our latest preprint, led by @mmasoura.bsky.social, to find out!
www.biorxiv.org/content/10.1...

16.10.2025 12:33 — 👍 100    🔁 42    💬 2    📌 5
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A baby benefits from personalized gene editing in the clinic An infant with an inherited life-threatening metabolic condition has responded to a tailored therapy that uses the gene-editing tool CRISPR to correct a specific mutation.

An infant with an inherited life-threatening metabolic condition has responded to a tailored therapy that uses CRISPR to correct a specific mutation

go.nature.com/3Jmdbuy

19.08.2025 15:08 — 👍 68    🔁 12    💬 0    📌 2
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Loss of miR-9-2 Causes Cerebral Hemorrhage and Hydrocephalus by Widespread Disruption of Cell-Type-Specific Neurodevelopmental Gene Networks. MIR-9-2 is a broadly and highly expressed microRNA in the developing brain and is frequently deleted in 5q14.3 Microdeletion Syndrome, a rare but severe neurodevelopmental disorder. Despite this, litt...

1/5: How does a presumably redundant microRNA contribute to mammalian brain development and neurodevelopmental disease? Check out our new work led by Dr. Santiago Fregoso now on bioRxiv! www.biorxiv.org/content/10.1... #Neurodev #miRNA #hydrocephalus #Genetics #bioRxiv.

02.08.2025 00:02 — 👍 4    🔁 5    💬 1    📌 0
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Seattle researchers hit 'breakthrough moment' in understanding SIDS It is one of the most horrific tragedies for a parent: the sudden, unexplained death of a seemingly healthy baby.

Seattle Children’s researchers are making breakthrough discoveries in the quest to prevent #SIDS.
Learn more in this story from KOMO News:

#MedSky

komonews.com/news/local/r...

01.08.2025 16:27 — 👍 4    🔁 1    💬 0    📌 0

On Sunday I will cycle 50 km to raise money to support research to prevent blindness. If you can, please sponsor me! fightingblindness.akaraisin.com/ui/MOVEFORSI...

20.06.2025 17:37 — 👍 10    🔁 4    💬 0    📌 0
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World first: ultra-powerful CRISPR treatment trialled in a person Immune-cell function improved in a teenager whose DNA was altered using prime editing.

The CRISPR family’s most versatile member has made its medical debut: a cutting-edge gene-editing technique known as prime editing has been used to treat a person for the first time

https://go.nature.com/3YNta9V

19.05.2025 13:58 — 👍 71    🔁 19    💬 0    📌 1
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Today "a milestone in the evolution of personalized therapies for rare & ultra-rare inborn errors of metabolism"
—the 1st human to undergo custom genome editing
—from decades of NIH funded research
www.nejm.org/doi/full/10....
@nejm.org
www.nejm.org/doi/full/10....
www.nytimes.com/2025/05/15/h...

15.05.2025 18:05 — 👍 596    🔁 169    💬 10    📌 27
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Our new contribution to the quest to find causal GWAS genes! Sam Ghatan from my lab at @nygenome.org led a systematic comparison of eQTLs and CRISPRi+scRNA-seq screens. TL;DR: they provide highly complementary insights, with ortogonal pros and cons. 🧵👇
www.biorxiv.org/content/10.1...

06.05.2025 17:00 — 👍 98    🔁 42    💬 1    📌 2
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Vilcek Prizes for Creative Promise - Vilcek Foundation The Creative Promise Prizes are awarded to young immigrant professionals who have demonstrated outstanding achievement early in their careers.

If you are immigrant into the US and work in the biomedical sciences (like me) and are still young (not like me), please apply for the Vilcek prizes for Creative Promise founded by an inspiring immigrant couple, Marica and Jan Vilcek.

vilcek.org/prizes/vilce...

18.03.2025 13:45 — 👍 16    🔁 10    💬 1    📌 0
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🚨 New paper alert! 🚨
We’ve just launched openretina, an open-source framework for collaborative retina modeling across datasets and species.
A 🧵👇 (1/9)

14.03.2025 09:41 — 👍 38    🔁 20    💬 1    📌 1
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Saying goodbye is hard! So is interpreting non-coding variants in visual disorders! Luckily, that is the gift that Dr. Leah VandenBosch left us with after a very successful postdoc in the Cherry Lab. Check your own favorite retinal regulatory variants here: genome.ucsc.edu/s/CherryLab/...

26.02.2025 02:49 — 👍 9    🔁 3    💬 1    📌 1
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Whole-genome sequencing analysis identifies rare, large-effect noncoding variants and regulatory regions associated with circulating protein levels Nature Genetics - Rare variant association analysis of plasma proteins using whole-genome sequencing data in 54,306 individuals in the UK Biobank demonstrates that combining both single-variant and...

Excited to finally share that our paper looking at the effect of rare non-coding variants using WGS on circulating protein levels in the UKB has been released in Nature Genetics @naturegenet.bsky.social! We now analyse the full 3,000 circulating proteins in all 50,000 individuals rdcu.be/ea16i

24.02.2025 18:26 — 👍 32    🔁 19    💬 1    📌 2

#Neuroskyence students! We're brainstorming ways to support your development over this summer break, esp. given the changes in summer intern programs across our fields. What other opportunities would you like to see?

Some ideas: undergrad-focused webinars, self-paced courses, challenges, etc.

25.02.2025 17:01 — 👍 30    🔁 10    💬 3    📌 2
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Standing with Ukraine in Seattle

24.02.2025 05:20 — 👍 0    🔁 0    💬 0    📌 0
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I was touched by the great turnout in Seattle to support #Ukraine. Thank you to the organizers and @adamsmith.house.gov for your speech. We must continue arming Ukraine and defend democracy against Russian invasion. #StandWithUkraine 🇺🇦"

24.02.2025 02:33 — 👍 5    🔁 0    💬 0    📌 0
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Since 2022, people around the world have stood in solidarity, joining rallies to support Ukraine and refusing to let russia silence the truth. They chose Ukraine’s side, united in the fight for freedom. Join in, speak up, #StandWithUkraine:
uaworldmap.ukrainianworldcongress.org/en?fbclid=PA...

23.02.2025 16:08 — 👍 176    🔁 38    💬 3    📌 1

Your city might have separate events, like the one I'll be attending in Seattle, organized by the Ukrainian Association of Washington State

21.02.2025 20:25 — 👍 2    🔁 0    💬 0    📌 0
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Global Events Where You Can Stand With Ukraine as Russia’s Full-Scale War Hits the Three-Year Mark Global events mark three years since Russia's invasion of Ukraine, showcasing solidarity and raising awareness for ongoing support and resilience.

As Russia's full-scale war hits the three-year mark, it's more important than ever to #StandWithUkraine. I encourage you to raise your voices for peace and justice by attending one of the events organized worldwide.
#RussiaIsATerroristState

21.02.2025 20:24 — 👍 1    🔁 0    💬 1    📌 0

Negotiating with the murderous dictator Putin won't lead to anything. He needs to be forced to retreat from Ukraine.

18.02.2025 18:52 — 👍 1    🔁 0    💬 0    📌 0

I hope this hastens the fall of Putin's regime

28.01.2025 21:04 — 👍 1    🔁 0    💬 0    📌 0

Since Russia's invasion of Ukraine, almost 20,000 Ukrainian children have been kidnapped by Russia. DNA testing might be the only way to one day reconnect them with their families.

22.01.2025 04:28 — 👍 6    🔁 0    💬 0    📌 0

I'm sure the Russian government will deny everything similar to MH17 and countless wat crimes they commit in Ukraine.

26.12.2024 16:10 — 👍 1    🔁 0    💬 0    📌 0
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Dominant RDH12-retinitis pigmentosa impairs photoreceptor development and cone function in retinal organoids Retinal dehydrogenase 12 (RDH12) is a photoreceptor NADPH-dependent retinal reductase enzyme, converting all- trans -retinal to all- trans -retinol. Heterozygous variants in RDH12 cause a rare autosom...

Moosajee Lab developed the first model for RDH12-autosomal dominant retinitis pigmentosa using #retinalorganoids and showed shorter photoreceptor segments and fewer photoreceptors as compared to controls.

#visionreseach

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

22.12.2024 05:06 — 👍 2    🔁 1    💬 0    📌 0
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As a result of this morning's shelling, 630 residential buildings, 16 medical facilities, 17 schools, and 13 kindergartens have been left without heat.

We can’t fully protect🇺🇦schools from russian missiles, but we can #BringLightBack to them:
u24.gov.ua/bring-light-...

20.12.2024 12:32 — 👍 178    🔁 78    💬 3    📌 3
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Predicting gene expression from histone marks using chromatin deep learning models depends on histone mark function, regulatory distance and cellular states Abstract. To understand the complex relationship between histone mark activity and gene expression, recent advances have used in silico predictions based o

So excited that our work on predicting gene expression from histone modifications using deep learning is out in NAR today. Brilliant to work with lead author @al-murphy.bsky.social and collaborators Aydan Askarova, @borislenhard.bsky.social and Nathan Skene 🧬⭐️🙏
academic.oup.com/nar/advance-...

11.12.2024 17:02 — 👍 70    🔁 29    💬 3    📌 0

A new interesting study investigating mitochondrial DNA (mtDNA) cis-effects on mtDNA encoded genes, mtDNA trans-effects on nucDNA encoded genes, and nucDNA trans-effects on mtDNA encoded genes.
#genomics #generegulation

11.12.2024 06:17 — 👍 1    🔁 0    💬 0    📌 0

An exciting preprint from Choudhary Lab addressing how cohesin and CTCF control gene expression and their role in precise enhancers targeting.

Cohesin appears to facilitate enhancer-mediated gene regulation via enhancers that depend on p300/CBP.

11.12.2024 03:35 — 👍 1    🔁 0    💬 0    📌 0

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