Giorgia Tosoni
@giorgitos.bsky.social
150 followers 280 following 18 posts
Postdoctoral researcher in the Molecular Neurogenetics Lab, Lund University. 🧗🏽‍♀️🏃🏽‍♀️🚴🏽‍♀️🏊🏽‍♀️
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giorgitos.bsky.social
🧵 1/ Excited to share our new research on immature neurons (ImN) in the adult human brain and their roles in healthy aging, Alzheimer’s disease (AD), and cognitive resilience. Here’s what we discovered 👇
biorxiv-neursci.bsky.social
Unique transcriptional profiles of adult human immature neurons in healthy aging, Alzheimer's disease, and cognitive resilience https://www.biorxiv.org/content/10.1101/2025.01.08.631686v1
Reposted by Giorgia Tosoni
Reposted by Giorgia Tosoni
nin-knaw.bsky.social
Why do some people with Alzheimer’s do not show symptoms of Alzheimer's?

During her PhD, @giorgitos.bsky.social explored this question. Part of the answer led her to an unexpected group of brain cells: underdeveloped neurons.

Read the full article on our website: nin.nl/news/the-eld...
The elderly brain is less mature than you think and that could protect you from Alzheimer’s Disease - Netherlands Institute for Neuroscience - Master the Mind
nin.nl
giorgitos.bsky.social
Important perspective on a fascinating study from the Frisén group, which used machine learning to identify neural progenitors in the adult human brain, a fresh lens on a long-standing debate 💥
Always exciting to see this field evolve, and grateful to be part of it @labsalta.bsky.social
giorgitos.bsky.social
Hora est 🎓
Last Thursday, I defended my PhD at the University of Amsterdam, @nin-knaw.bsky.social—graduated cum laude ✨ Huge thanks to my amazing supervisor @labsalta.bsky.social, co-promoters Paul Lucassen, Inge Huitinga & @fitzsimonslab.bsky.social. Thanks to all who made the day unforgettable!
Reposted by Giorgia Tosoni
giachiblue.bsky.social
I'm proud of contributing to @nkrauth.bsky.social @clemmensenc.bsky.social @olekiehn.bsky.social discovery of the role of an hypothalamic-brainstem circuit for prioritization of safety. Really impressive amount of work led by @nkrauth.bsky.social
nkrauth.bsky.social
Honored to share that our paper is out today in Nature Neuroscience:

www.nature.com/articles/s41...

We identify a hypothalamic-brainstem circuit linking internal states to locomotion: These projections drive safety-focused movement over competing behavior.

#Neuroscience #Hypothalamus #Locomotion
A hypothalamus–brainstem circuit governs the prioritization of safety over essential needs - Nature Neuroscience
Animals need to adapt behavior to balance survival with fulfillment of essential needs. Krauth et al. identify neurons in the lateral hypothalamus that, when activated, prioritize survival over other ...
www.nature.com
Reposted by Giorgia Tosoni
martinowk.bsky.social
Our paper has sparked a lot of people asking me – so Keri, what’s the tldr – is there, or isn’t there, new neurons in the human hippocampus?

It's a little more complicated than a yes or no IMO.
martinowk.bsky.social
Updated from the preprint, our paper, "Spatiotemporal analysis of gene expression in the human dentate gyrus reveals age-associated changes in cellular maturation and neuroinflammation" is now published.

www.cell.com/cell-reports...
Graphical abstract from the paper depicting the overall study design
Reposted by Giorgia Tosoni
amarsahay.bsky.social
Excited to share our preprint led by Ain Chung
& @jasonalipio.bsky.social showing how immature adult-born DGCs preferentially recruit inhibition of CA2 and CA3 to disproportionately affect hippocampal network properties and social memory. We began by asking 1/n
www.biorxiv.org/content/10.1...
Reposted by Giorgia Tosoni
martinowk.bsky.social
Updated from the preprint, our paper, "Spatiotemporal analysis of gene expression in the human dentate gyrus reveals age-associated changes in cellular maturation and neuroinflammation" is now published.

www.cell.com/cell-reports...
Graphical abstract from the paper depicting the overall study design
Reposted by Giorgia Tosoni
dzyla.bsky.social
I've been developing a semantic search tool that covers not just bioRxiv and medRxiv, but the entire PubMed database. This means you can search across a massive collection of biomedical research using keywords, questions, hypotheses, or even full abstracts. Try it out: mssearch.xyz
Streamlit
mssearch.xyz
Reposted by Giorgia Tosoni
nin-knaw.bsky.social
The NINclusion team launched the NIN Gym to support mental and physical health within the institute. Over the next 10 weeks, employees can join alternating Yoga and Bootcamp sessions led by personal trainer Ties
(@tiesverbeekpt.bsky.social) on Thursdays. The first session took place last week! 💪
Reposted by Giorgia Tosoni
liebschutz.bsky.social
All NIH study sections canceled indefinitely. This will halt science and devastate research budgets in universities.
giorgitos.bsky.social
12/ Huge thanks to all the co-authors, brain donors, and their families—this work wouldn’t have been possible without you! 🙏 We would be super grateful to hear your thoughts on our findings (don’t hold back, we’re all ears)! #Neurogenesis #Alzheimers #resilience
giorgitos.bsky.social
11/ Our work suggests immature neurons actively support hippocampal plasticity and resilience. Could targeting these cells help unlock new strategies for combating AD? 🏥💡We hope to provide a resource to help explore the molecular basis of aging, AD, and resilience. 🛠️
giorgitos.bsky.social
10/ ImN also showed decreased (in silico) intercellular communication in AD brains. In resilient individuals, they maintained crosstalk with other cells critical for anti-inflammatory and neuroprotective signaling. 🤝
giorgitos.bsky.social
9/ 🛡️ Resilient individuals—cognitively intact despite AD pathology—harbored ImN enriched for anti-inflammatory, anti-amyloidogenic, and neuroprotective transcriptional programs. These cells may actively buffer against AD progression. 💡
giorgitos.bsky.social
8/ We took extra steps to validate our findings using RNAScope in adult and fetal human brain & human iPSC-derived 3D cultures. Key marker combinations could detect ImN, and increased with hippocampal neuronal differentiation, indicating a role in human hippocampal neurogenesis. 🔬
giorgitos.bsky.social
7/ Yet, are these cells born in adulthood, passively waiting to mature when they ‘grow up’ or lingering remnants of embryonic neurogenesis? Maybe neither: ImN showed “youthful” transcriptional traits vs mature neurons, suggesting they may actively support hippocampal homeostasis.
giorgitos.bsky.social
6/ So, what did we find? Our quality control pipeline revealed the presence of immature neurons in adult GC! 🥳Enriched for immature markers, these populations were validated by trajectory inference and integration with the fetal neurogenic dataset.
giorgitos.bsky.social
5/ Back to the adult cohort: To screen for ImN signatures in adult GC and avoid false positives & negatives, we had to apply a rigorous pipeline: Ambient RNA removal, astrocyte and GC subsetting, empty droplet artifact filtering, unspliced RNA re-clustering. 🧹