Andrew Octavian Sasmita
@AOSasmita
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Postdoc @YvonneMNolan @AnatNeuroUCC š¬š§ PhD @KlausNave @MPI_NAT | Alzheimer's x glia x sex differences x microbiome | (he/they) š³ļøāš
Cork, Ireland
Joined March 2022
Are you using 5xFAD mice to study Alzheimerās disease? Our work @NeuroCellPress may be relevant to you š Age and sex are known to influence Aβ plaque burden in these mice. Here, we found that the transgene parentage is another strong determinant. (1/11) https://t.co/ykg48zcalG
cell.com
The 5xFAD transgenic model, popular in Alzheimerās disease research, exhibits varying cerebral plaque burden depending on the parental source of the transgene. Mice inheriting the transgene paterna...
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Lymphoid gene expression supports neuroprotective microglia function @nature
https://t.co/fQFs9faxl7
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Astrocytes distress triggers brain pathology through induction of Ī“ secretase in a murine model of Alzheimerās disease:
nature.com
Nature Communications - The role of astrocytes in Alzheimerās disease pathology remains insufficiently characterized. Here, the authors show that aggravated astrocyte response to Aβ...
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A PSEN1 variant in a father and son with early-onset Alzheimerās abolishes γ-secretase activity. What explains their dementia? @VIBLifeSciences
https://t.co/Ny2K43mpbP
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Stoked to see this essay on the involvement of the white matter in Alzheimerās disease published and @ConstanzeDepp being one of the finalists for the Eppendorf & Science Prize for Neurobiology this year! š https://t.co/s9InjS2ZHG
science.org
Rethinking Alzheimerās disease through the lens of myelin
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How is the persistence of compartmentalized inflammation sustained in MS? Our new study in @ImmunityCP offers some hints. https://t.co/QBUdWljXhY Congrats @fngruqng2, @LenaSpieth, @LuLiu_Laura, @StefanBerghoff, @vinitiwari1 et al.
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The āāinactiveāā X chromosome (Xi) is active. Xi regulates gene expression from the active X. 1/n
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Our glial circadian atlas in AD and aging mice is now out in @NatureNeuro! Congrats to @patwsheehan for incredible work and to our collaborators @johnthefryer, @CarpeRibosomam, @darshan1s, Ron Anafi, and the team. @johnthefryer and I started this in 2019! https://t.co/AYnP0sCbGj
nature.com
Nature Neuroscience - Sheehan et al. have characterized the circadian translatomes of astrocytes and microglia in the mouse cortex in the context of amyloid pathology or aging, revealing cell- and...
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Cells and blebbisomes photographed through a microscope by Burnette Lab graduate student, Grace Ward. Actin filaments are shown. #CellBiology
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Oligodendrocyte precursor cell-specific blocking of low-glucose-induced activation of AMPK ensures myelination and remyelination
nature.com
Nature Metabolism - Inhibition of AMPK activation under low glucose conditions in oligodendrocyte precursor cells is shown to be important for myelination during development and remyelination in...
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Testing some new antibodies to identify oligodendrocytes š£, for me, the most difficult one to target in brain microscopy! Here, I was able to identify its nuclei but not the whole cell body like neurons š”or microglia šµ. Still, you can see oligos are everywhere! #Neuroscience
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Microbial metabolite indole-3-propionic acid drives mitochondrial respiration in CD4+āT cells to confer protection against intestinal inflammation
nature.com
Nature Metabolism - The gut microbiota-derived metabolite indole-3-propionic acid (IPA) is found to enhance mitochondrial fatty acid and amino acid oxidation in CD4+āT cells. In mice,...
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Excited to share new work from the lab showing that FTD causing mutations in tau cause widespread defects in microglia function ā¦@WashUMedADRCā© ā¦@RCFNeuroā© ā¦@AFTDHopeā©
nature.com
Molecular Psychiatry - Cell autonomous microglia defects in a stem cell model of frontotemporal dementia tau
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Microglia-specific regulation of lipid metabolism in Alzheimerās disease revealed by microglial depletion in 5xFAD Mice https://t.co/eZsHUGa5Yq
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The Lipid Brain Atlas is out now! If you think lipids are boring and membranes are all the same, prepare to be surprised. Led by Luca Fusar Bassini with Gioele La Manno's lab, we mapped membrane lipids in the mouse brain at high resolution. https://t.co/q3AeqGsIS1
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Apolipoprotein ε4 exacerbates white matter impairment in a mouse model of Aβ amyloidosis by decreasing actively myelinating oligodendrocytes https://t.co/ijOJ6lzv8Y
@alzdemjournals
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#GUTImage from the paper by @MelaNeurobio from @_ibima and @InfoUMA entitled "Microbiota fasting-related changes ameliorate cognitive decline in obesity and boost ex vivo microglial function through the gut-brain axis" via https://t.co/3CAbo7m8Zf
#Microbiota #Obesity
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Human adult hippocampal neurogenesis is shaped by neuropsychiatric disorders, demographics, and lifestyle-related factors: Cell Stem Cell
cell.com
MƔrquez-Valadez and colleagues show that neuropsychiatric disorders alter the generation of new neurons in the adult human brain. Major depression, schizophrenia, and bipolar disorder disrupt early...
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The accepted dogma for dietary lipids was their absorption by the gut lining into our bloodstream. It turns out there's another way in, via our immune cells, influenced by the gut microbiome (as shown in mice) @ScienceMagazine
https://t.co/Knvh8g9BjM
https://t.co/15UXOG7tAI
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Rapid amyloid-β clearance and cognitive recovery through multivalent modulation of bloodābrain barrier transport | Signal Transduction and Targeted Therapy
nature.com
Signal Transduction and Targeted Therapy - Rapid amyloid-β clearance and cognitive recovery through multivalent modulation of bloodābrain barrier transport
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Presented our work at the Glia Congress 2025 a few months ago on the topic of oligodendrocytes in Alzheimerās disease and was awarded the stipend! Many thanks to the organizers and grateful for the wonderful discussions with old and new connections.
GLIA2025 #StipendSpotlightSeries Meet Andrew Octavian Sasmita (@AOSasmita), UCC researcher uncovering how oligodendrocytes contribute to amyloid-β plaques in Alzheimerās. His work highlights their role in disease progression and points to new, OL-targeted therapeutic strategies.
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