Sarah Marzi
@sj-marzi.bsky.social
1.9K followers 1.4K following 80 posts
Senior Lecturer and UK DRI Group Leader at King's College London | Epigenetic regulation in neurodegenerative diseases | https://www.kcl.ac.uk/people/sarah-marzi
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sj-marzi.bsky.social
How does APOE change your risk of developing Alzheimer's disease? At least partially by changing the function of immune cells in your brain 🧠🧬

New paper out in @natcomms.nature.com today: www.nature.com/articles/s41...

@ukdri.ac.uk @kingsioppn.bsky.social @imperialbrains.bsky.social
https://nature.com/articles/s4146…
Reposted by Sarah Marzi
ukdri.ac.uk
❓ How can proteins lead to personalised Alzheimer’s treatment?

Discover how Prof @sj-marzi.bsky.social team have been observing changes in the brains microglia and their responses to Alzheimer’s.

Read more about Prof Marzi’s work 👉 lnkd.in/e4iaqqq9
Reposted by Sarah Marzi
dementiaresearcher.bsky.social
From fellowship heartbreak to rewriting success — stories of resilience in research funding on this week’s podcast. Available to Watch on YouTube now, or wait until Monday to find it in your podcast app.

youtu.be/ZbaRKM18hP0?...
Failing Forward: What My Grant Rejection Taught Me
YouTube video by Dementia Researcher
youtu.be
Reposted by Sarah Marzi
gocastelobranco.bsky.social
Join us at the FENS Single-Cell & Spatial Omics Winter School with:

@sarabiz86.bsky.social
@rongfan8.bsky.social
@gokcegroup.bsky.social
@gioelelamanno.bsky.social
@sj-marzi.bsky.social
@jplopez-atalaya.bsky.social
Ana Falcão
Florian Rosenberger
Gabriel Baró
Bosiljka Tasic
Barbara Treutlein
fens.org
🌟 Registration is now OPEN! 🌟

Join the 2025-2026 #FENS-Hertie #WinterSchool and explore this year's topic – Single-cell and Spatial Omics to Understand Brain Heterogeneity! 🔬

📍 Alicante, Spain
🗓️ 11-17 Jan 2026

🔗 https://loom.ly/RM55lFQ
sj-marzi.bsky.social
It has been and continues to be an excellent collaboration and many thanks go to the brilliant team: Maria Tsalenchuk, Kyle Farmer, Sandra Castro, Abigail Scheirer, Yuqian Ye, Tim Greenamyre and Emily Rocha 🙏

@ukdri.ac.uk @kingsioppn.bsky.social @imperialbrains.bsky.social
sj-marzi.bsky.social
Conversely, we see disruption of synaptic genes in the motor cortex. These results suggest reasons why neurons in the nigra may be particularly vulnerable in Parkinson's disease and why we see impairments in synaptic plasticity in the motor cortex.
Histone acetylation in the motor cortex of rats exposed to rotenone highlights disruption of synaptic pathways. This includes consistent upregulation of Homer1 and its binding partners.
sj-marzi.bsky.social
In this work, led by Maria Tsalenchuk, we show that chronic exposure to the pesticide rotenone leads to different histone acetylation patterns in the substantia nigra and motor cortex. In the nigra we see striking upregulation of immune pathways.
Staining images showing increased activation of microglia in the substantia nigra of rats exposed to rotenone.
sj-marzi.bsky.social
☣️🐀 Pesticide exposure in rats changes epigenetic signatures in different brain regions!

Latest paper from our fruitful collaboration with Emily Rocha and Tim Greenamyre, linking epigenetic signatures of exposure to toxicants to Parkinson's disease:

www.nature.com/articles/s41...
Unique nigral and cortical pathways implicated by epigenomic and transcriptional analyses in rotenone Parkinson’s model - npj Parkinson's Disease
npj Parkinson's Disease - Unique nigral and cortical pathways implicated by epigenomic and transcriptional analyses in rotenone Parkinson’s model
www.nature.com
Reposted by Sarah Marzi
ukdri.ac.uk
Cells in key brain regions involved in Parkinson’s retain a ‘memory’ of pesticide exposure that disrupts gene expression🧬

Research by @sj-marzi.bsky.social & colleagues unlocks understanding of the mechanisms behind the role of pesticide exposure in Parkinson’s👉 buff.ly/1F16eUB
sj-marzi.bsky.social
Good times discussing all things #epigenetics and #microglia at our symposium with this awesome group: @jonasneher.bsky.social, @kooistrasm.bsky.social, @mancusorenzo.bsky.social. And enjoying the sun and science at #glia2025 in Marseille, while hoping that fires can be contained.
Jonas Neher, Sarah Marzi, Susanne Kooistra and Renzo Mancuso at the microglia epigenetics symposium for the Glia conference 2025 in Marseille.
sj-marzi.bsky.social
Really excited to speak at the Canadian Conference on Epigenetics. Join us in beautiful Banff in November 👇🏻
ceehrc.bsky.social
Registration is now OPEN for the 11th Canadian Conference on Epigenetics!

The annual meeting will be held November 12-15, 2025 at the Banff Centre in Banff, Alberta.

You can register and find out more information at our website: event.fourwaves.com/ceehrc2025
sj-marzi.bsky.social
Thanks again for inviting me 🙏🏻
Reposted by Sarah Marzi
kittybmurphy.bsky.social
Excited to share that a chapter of my PhD has just been published in Nature Communications!

We profiled the transcriptomic and chromatin landscapes of microglia expressing the different APOE variants, which were xenografted into the brains of an Alzheimer's disease (AD) mouse model 🧠🧬

1/n
Reposted by Sarah Marzi
ukdri.ac.uk
The APOE gene is a major genetic risk factor for Alzheimer's, but different versions of the protein confer strikingly different risk profiles.

New research led by ‪@sj-marzi.bsky.social‬ offers insight into how the different versions of APOE affect microglia👉https://buff.ly/pyFh7jy
sj-marzi.bsky.social
Very interesting indeed, thanks for sharing 🙏🏻
sj-marzi.bsky.social
Huge thanks and congrats to the wonderful lead author @kittybmurphy.bsky.social and all fantastic team members here and from the De Strooper and @mancusorenzo.bsky.social labs. So grateful to the @alzassociation.bsky.social and all funders for supporting us.
sj-marzi.bsky.social
Importantly, some of the protective effects of APOE2 on immune functioning seem to be driven through increased DNA binding of vitamin D receptor, potentially opening up new avenues to explore therapeutic intervention.
sj-marzi.bsky.social
We studied human microglia harbouring the different APOE variants, xenografted into an Alzheimer's mouse model. Our results suggest that functions including cellular motility, inflammatory immune response and phagocytosis are directly affected by the APOE isoforms.
sj-marzi.bsky.social
How does APOE change your risk of developing Alzheimer's disease? At least partially by changing the function of immune cells in your brain 🧠🧬

New paper out in @natcomms.nature.com today: www.nature.com/articles/s41...

@ukdri.ac.uk @kingsioppn.bsky.social @imperialbrains.bsky.social
https://nature.com/articles/s4146…
sj-marzi.bsky.social
So lucky to have the best lab. Will miss @kittybmurphy.bsky.social so much 😢❤️ but excited to see her future successes in ancient genome research!
kittybmurphy.bsky.social
And just like that, 5 years in the Marzi lab @sj-marzi.bsky.social have come to an end. Couldn’t have asked for a better team ✨

Super excited to say, I’m switching fields and will be working with ancient human genomes in the Skov lab @lauritsskov.bsky.social in Copenhagen 🇩🇰
sj-marzi.bsky.social
Trying to get cell type specific insights from bulk brain epigenetic studies? Check out our new method CHAS for cell type deconvolution in brain studies of histone acetylation. Reanalysis of bulk data from >300 samples revealed novel cell type specific epigenetic associations across brain diseases👇🏻
sj-marzi.bsky.social
Really nice work from the @nottalexi.bsky.social lab using functional genomics to show that genetic risk for multiple neurodegenerative diseases is linked to disease-specific microglial pathways. Congrats Aydan, @mangiruben.bsky.social and Alexi 👏🏻✨
nottalexi.bsky.social
A first first-author paper by Aydan Askarova with @mangiruben.bsky.social & @sj-marzi.bsky.social showing that genetic risk for neurodegenerative conditions is linked to disease-specific microglial pathways. @ukdri.ac.uk 🎉 🍾
journals.plos.org/plosgenetics... More to come from Aydan soon!
sj-marzi.bsky.social
Thanks, Vardhman 🙏🏻🙏🏻
sj-marzi.bsky.social
Many thanks to the excellent team on this, including @kittybmurphy.bsky.social , Yuqian Ye, Maria Tsalenchuk and @nottalexi.bsky.social 🙏🏻🙏🏻
sj-marzi.bsky.social
We show that there are widespread epigenetic differences in oligodendrocytes associated with Alzheimer's disease.