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In the mouse embryonic forebrain, developmentally distinct oligodendrocyte progenitor cell populations and their progeny, oligodendrocytes, emerge from three distinct regions in a spatiotemporal gradient from ventral to dorsal. However, the functional importance of this oligodendrocyte developmental heterogeneity is unknown. Using a genetic strategy to ablate dorsally derived oligodendrocyte lineage cells (OLCs), we show here that the areas in which dorsally derived OLCs normally reside in the adult central nervous system become populated and myelinated by OLCs of ventral origin. These ectopic oligodendrocytes (eOLs) have a distinctive gene expression profile as well as subtle myelination abnormalities. The failure of eOLs to fully assume the role of the original dorsally derived cells results in locomotor and cognitive deficits in the adult animal. This study reveals the importance of developmental heterogeneity within the oligodendrocyte lineage and its importance for homeostatic brain function.
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http://dx.doi.org/10.1038/s41593-024-01666-8 | DOI Listing |
Reprod Toxicol
September 2025
Department of Biochemistry and Molecular Biology, Brain Korea 21 Project, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea. Electronic address:
Xenopus embryo serves as an ideal model for teratogenesis assays to observe the effects of any compounds on the cellular processes crucial for early development and adult tissue homeostasis. In our screening of a chemical library with frog embryo, caffeic acid phenethyl ester (CAPE) was found to upregulate the FGF/MAPK pathway, disrupting germ layer formation in early development. Exposure to CAPE interfered with the formation of anterior-posterior body axis and of ectodermal derivatives such as eyes, dorsal fin and pigment cells.
View Article and Find Full Text PDFBiomed Pharmacother
September 2025
Department of Pharmacology, College of Dentistry, Jeonbuk National University, Jeonju 54896, Republic of Korea. Electronic address:
Alzheimer's disease (AD) is marked by amyloid-beta (Aβ) plaque buildup, tau hyperphosphorylation, neuroinflammation, neuronal loss, and impaired adult hippocampal neurogenesis (AHN). Taurine has shown protective effects in various cellular and animal models of AD, though the molecular mechanisms of free taurine and its effects in patient-derived models remain underexplored. This study evaluates taurine's therapeutic potential using integrated in silico, in vitro, in vivo, and ex vivo approaches.
View Article and Find Full Text PDFHum Mol Genet
September 2025
Department of Neurology, MassGeneral Institute for Neurodegenerative Disease (MIND), Massachusetts General Hospital, 114 16th Street, Charlestown, MA 02129, United States.
A de novo mutation in the transcription factor Nucleus accumbens associated protein 1 (NACC1) gene (c.892C > T p.R298W) causes a rare, severe neurodevelopmental disorder which manifests postnatally.
View Article and Find Full Text PDFStructural brain abnormalities in psychosis are well-replicated but heterogenous posing a barrier to uncovering the pathophysiology, etiology, and treatment of psychosis. To parse neurostructural heterogeneity and assess for the presence of anatomically-derived subtypes, we applied a data-driven method, similarity network fusion (SNF), to structural neuroimaging data in a broad cohort of individuals with psychosis (schizophrenia spectrum disorders (SSD) n=280; bipolar disorder with psychotic features (BD) n=101). SNF identified two transdiagnostic subtypes in psychosis (subtype 1: n=158 SSD, n=75 BD; subtype 2: n=122 SSD, n=26 BD) that exhibited divergent patterns of abnormal cortical surface area and subcortical volumes.
View Article and Find Full Text PDFACS Nano
September 2025
Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China.
An interactive bidirectional relationship between periodontitis and diabetes poses great challenges for the treatment of diabetic periodontitis in clinical practice. The hyperglycemic inflammatory periodontal microenvironment is characterized by oxidative damage, chronic invasive infection, excessive inflammation, unbalanced immunomodulation, progressive neuropathy, diabetic vasculopathy, and uncoupled bone resorption and formation responses. The neuromodulation strategy holds great potential to mediate and coordinate temporally the complex microenvironment for diabetic periodontal regeneration.
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