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Mari Sepp

@marisepp

Evo-Devo neurobiologist | Associate Prof. at Institute of Genomics, University of Tartu | SFARI Fellow | EMBO Installation Grantee | Cerebellum development: how it evolved and how it goes wrong

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18.11.2024
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Latest posts by Mari Sepp @marisepp

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Warm congratulations to The Brain Prize winners 2026, Professor David Ginty and Professor Patrik Ernfors, for their pioneering work on how the nervous system detects and processes touch and pain.

Karolinska Institutet
HHMI

#Neuroscience #BrainPrize2026

05.03.2026 15:01 πŸ‘ 76 πŸ” 36 πŸ’¬ 1 πŸ“Œ 9

A beautiful 😍 review on vertebrate organ evolution - from molecular basis and evolutionary forces to the emergence of novel forms and functions.

03.03.2026 15:15 πŸ‘ 6 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Evolutionary perspectives on the development of the mammalian cerebellum: From cellular diversity to gene regulatory programs During mammalian evolution, the cerebellum has diversified in size and morphology and broadened its roles from motor control to higher-order cognitive…

Hi Angelo, should work ... but also try this one:
www.sciencedirect.com/science/chap...

12.02.2026 11:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

It was a wonderful opportunity to reflect on our work on the development of the mammalian cerebellum.

We thank our editors, Alexandra Joyner and James Li!

Special thanks to Henrik @kaessmannlab.bsky.social for his unwavering support and mentorship!

12.02.2026 10:53 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

How have concerted and mosaic evolutionary mechanisms shaped the expansion of the human cerebellum?

Our review with @tyamadat.bsky.social and @ioansarr.bsky.social available free till March 29:
authors.elsevier.com/a/1ma2wFzn7a...

12.02.2026 10:38 πŸ‘ 28 πŸ” 7 πŸ’¬ 3 πŸ“Œ 1
HEALTH + LIFE SCIENCE ALLIANCE | Interinstitutional Postdocs

Ramsey Najm and I have a joint postdoc position advertised through the @hlsalliance.bsky.social Interinstitutional Postdoc call! Our project proposes to generate better posterior cerebellar organoids to improve fidelity of pediatric medulloblastoma models.
www.health-life-sciences.de/opportunitie...

11.02.2026 15:20 πŸ‘ 5 πŸ” 2 πŸ’¬ 1 πŸ“Œ 1

Hiring a PhD student! πŸŽ“
Looking for a PhD student to work on the prediction of complex diseases by integrating genetics, multi-omics, and electronic health records. Details: genomics.ut.ee/sites/defaul...
Please share with anyone interested!

09.02.2026 13:53 πŸ‘ 3 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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Generating cerebellar organoids from pluripotent stem cells Summary: This Special Article provides a comprehensive overview of the methods, applications and considerations for the generation of cerebellar organoids.

Some friends and I wrote a review with @biologists.bsky.social !! Together with Esther Becker and Simone Mayer, we explore the state of the cerebellum organoid field and offer practical guidance on getting this model system started in your own lab. journals.biologists.com/dmm/article/...

08.02.2026 16:25 πŸ‘ 14 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0

Congrats to @urmovosa.bsky.social and the international research team behind this achievement, including colleagues at @estbiobank.bsky.social!

08.02.2026 13:09 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thank you!

29.01.2026 20:42 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
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I've started my own lab πŸŽ‰
PhD/postdoc positions available - reach out if curious about cerebellum evo-devo and autism spectrum disorders.

We’re based at Uni Tartu, Institute of Genomics (home to Estonian Biobank), and funded by @simonsfoundation.org @embo.org, and the Estonian Research Council.

29.01.2026 20:33 πŸ‘ 51 πŸ” 26 πŸ’¬ 4 πŸ“Œ 4

This paper marks the end of a long but rewarding project - and the start of something new (more belowπŸ‘‡).

Massive thanks to @kaessmannlab.bsky.social, @ioansarr.bsky.social, @tyamadat.bsky.social, our amazing collaborators @steinaerts.bsky.social, Stefan Pfister, RΓΌdiger Behr and the entire team! πŸ’™

29.01.2026 20:33 πŸ‘ 23 πŸ” 2 πŸ’¬ 2 πŸ“Œ 1

Big congrats to @kmatlik.bsky.social and all the EMBO Installation Grantees 2026! πŸ‘πŸŽ‰

20.01.2026 15:49 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

TF-MINDI is out! A new method to learn cis-regulatory codes through rich embeddings of TF binding sites. TF-MINDI decomposes motif neighbourhoods, and works downstream of any sequence-to-function deep learning model. We deeply study the enhancer code in human neural development, check out the thread

15.01.2026 12:32 πŸ‘ 60 πŸ” 38 πŸ’¬ 1 πŸ“Œ 0
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Postdocs at Center for Gene Expression in Department of Cellular and Molecular Medicine - Copenhagen, Hovedstaden (DK) job with University of Copenhagen | 12849488 We are looking for 2 or more highly motivated postdocs interested in ribosome biology, 3D chromatin organisation, or regulation of protein turnove...

We are looking for a Postdoc at the Center for Gene Expression in Copenhagen. Deadline for applications is the 11th of January. If you are interested in 3D chromatin, SMC complexes, and super-resolution microscopy, join us. www.nature.com/naturecareer...

02.01.2026 08:12 πŸ‘ 21 πŸ” 25 πŸ’¬ 0 πŸ“Œ 2

Really happy to join NeuroPSI at Paris Saclay to lead a research group funded by an ERC Consolidator grant #ERCCoG . We'll study the origins of the vertebrate brain using shark embryos. 🦈 🧠 Reach out if you are interested in joining the team 🀍

22.12.2025 07:47 πŸ‘ 71 πŸ” 12 πŸ’¬ 12 πŸ“Œ 0

Join us at SMBE26! We are in a golden period for understanding the evolution of gene regulation.

17.12.2025 10:42 πŸ‘ 18 πŸ” 9 πŸ’¬ 0 πŸ“Œ 0
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Cerebellar Purkinje cell stripe patterns reveal a differential vulnerability and resistance to cell loss during normal aging in mice Purkinje cell subpopulations have varying vulnerability to age-related neurodegeneration, creating a striped pattern of cell loss that reflects the developmental, anatomical, and functional…

Aged mice and human samples show patterned loss of Purkinje cells in the cerebellum, revealing a spatial signature of ageing that may help explain why motor coordination and behaviour decline over time.

11.12.2025 23:28 πŸ‘ 8 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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Fellows-to-Faculty Alum Tomasz Nowakowski Studies Human Cortical Development Simons Foundation Fellows-to-Faculty alumnus Tomasz Nowakowski spoke with the foundation about his experiences with the program.

In 2018, Tomasz Nowakowski received our Fellows-to-Faculty Award to jumpstart his new lab. We spoke with him about his research and the Fellows-to-Faculty program, which is open for apps: https://www.simonsfoundation.org/fellows-to-faculty-alum-tomasz-nowakowski-studies-human-cortical-development/

11.12.2025 13:35 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

#ERCCogG granted!!! Immensely grateful for this opportunity. Thanks @erc.europa.eu . Many news coming soon. New lab opening and will be posting positions. 🦈🧠🀍 Go sharkies!

09.12.2025 17:00 πŸ‘ 55 πŸ” 7 πŸ’¬ 17 πŸ“Œ 3
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We tend to think of neurons as either excitatory or inhibitory, but some neurons chemically inhibit their downstream targets while electrically exciting their neighbors. What is gained by having an inhibitory neuron excite its neighbor?

www.biorxiv.org/content/10.6...

08.12.2025 18:49 πŸ‘ 81 πŸ” 24 πŸ’¬ 3 πŸ“Œ 2
JASPAR: An open-access database of transcription factor binding profiles JASPAR is the largest open-access database of curated and non-redundant transcription factor (TF) binding profiles from six different taxonomic groups.

JASPAR 2026 is out πŸŽ‰

The new release massively expands the TF motif collections and adds a dedicated DeepLearning collection of motifs learned from deep learning models.

Database: jaspar.elixir.no
Paper (NAR): doi.org/10.1093/nar/...

🧡1/2

03.12.2025 14:43 πŸ‘ 62 πŸ” 28 πŸ’¬ 1 πŸ“Œ 0

Claudia Feng's Ph.D work is now out, co-led with @brittavelten.bsky.social and @steglelab.bsky.social . Large-scale CRISPRi perturbations in genetically heterogenous iPSC lines, with single cell readout - enjoy :)

03.12.2025 11:03 πŸ‘ 13 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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Deadline approaching for participating in the international Stanford Course on Neural Assembloids in spring 2026!

This is an immersive, hands-on course on generating, probing and manipulating stem cell-derived neural #assembloids and #organoids for disease and development modeling.

02.12.2025 01:09 πŸ‘ 15 πŸ” 11 πŸ’¬ 1 πŸ“Œ 0
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Brain-wide mapping of developmental trajectories of cerebellar efferent projections | PNAS Long-range cerebellar outputs are critical for shaping brain-wide functional architecture, influencing motor, cognitive, and affective domains. Pro...

Nice cerebellum development paper πŸ‘€

www.pnas.org/doi/10.1073/...

26.11.2025 01:33 πŸ‘ 34 πŸ” 8 πŸ’¬ 1 πŸ“Œ 1
Yes, this is where you would work (the round building, not the boat)

Yes, this is where you would work (the round building, not the boat)

We are looking for a postdoc to join our team! If you're interested in translating a cutting edge genomics technology (www.nature.com/articles/s41...) to real-life applications in hematology, this is for you. We offer a unique working environment ON THE BEACH: recruitment.crg.eu/content/jobs...

20.11.2025 09:36 πŸ‘ 17 πŸ” 16 πŸ’¬ 0 πŸ“Œ 3
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NEW pub in @science.org πŸ₯³

Is it sponges (panels A & B) or comb jellies (C & D) that root the animal tree of life?

For over 15 years, #phylogenomic studies have been divided.

We provide new evidence suggesting that...

πŸ”—: www.science.org/doi/10.1126/...

13.11.2025 20:33 πŸ‘ 284 πŸ” 130 πŸ’¬ 14 πŸ“Œ 30
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Fellows-to-Faculty Award The Fellows-to-Faculty Award is a new iteration of the previously offered Simons Foundation Independence Awards.

Interested in applying for our Fellows-to-Faculty Award? Watch the recording of our informational webinar for more details on the program: https://www.simonsfoundation.org/grant/fellows-to-faculty-award/#:~:text=Brain%20(SCPAB).-,Informational%20Webinar,-An%20informational%20webinar #science

11.11.2025 19:56 πŸ‘ 5 πŸ” 4 πŸ’¬ 0 πŸ“Œ 1
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Our intelligence and cognitive abilities are perhaps due to an expansion of our cerebral cortex. But surprisingly, compared to highly intelligent birds, primates have many more neurons in their cerebellum as compared to the cerebral cortex.

doi.org/10.1073/pnas...

09.11.2025 16:55 πŸ‘ 41 πŸ” 4 πŸ’¬ 0 πŸ“Œ 1

Share this funding opportunity! We offer the Fellows-to-Faculty program to nurture new talent in the basic sciences and to broaden the community of scientists contributing to Simons Foundation Autism Research Initiative (SFARI) and Simons Collaboration on Plasticity and the Aging Brain (SCPAB).

03.11.2025 19:26 πŸ‘ 1 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0