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Oligodendroglial heterogeneity in health,disease,and recovery:deeper insights into myelin dynamics

Neural Regeneration Research 2025年第11期20卷 3179-3192页

作者： Pieter-Jan Serneels Julie D.De Schutter Lies De Groef Lieve Moons steven bergmans KU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionNeural Circuit Development&Regeneration Research GroupLeuvenBelgium KU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionCellular Communication&Neurodegeneration Research GroupLeuvenBelgium

Decades of research asserted that the oligodendroglial lineage comprises two cell types:oligodendrocyte precursor cells and ***,recent studies employing single-cell RNA sequencing techniques have uncovered novel cell states,prompting a revision of the existing *** forward,the oligodendroglial lineage should be delineated into five distinct cell states:oligodendrocyte precursor cells,committed oligodendrocyte precursor cells,newly formed oligodendrocytes,myelin-forming oligodendrocytes,and mature *** new classification system enables a deeper understanding of the oligodendroglia in both physiological and pathological *** this uniform terminology will facilitate comparison and integration of data across ***,including the consolidation of findings from various demyelinating models,is essential to better understand the pathogenesis of demyelinating ***,comparing injury models across species with varying regenerative capacities can provide insights that may lead to new therapeutic strategies to overcome remyelination ***,by standardizing terminology and synthesizing data from diverse studies across different animal models,we can enhance our understanding of myelin pathology in central nervous system disorders such as multiple sclerosis,Alzheimer's disease,and amyotrophic lateral sclerosis,all of which involve oligodendroglial and myelin dysfunction.

关键词： animal models demyelination fish mammals multiple sclerosis myelin neurodegeneration oligodendrocytes oligodendroglial lineage remyelination

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Optic nerve injury-induced regeneration in the adult zebrafish is accompanied by spatiotemporal changes in mitochondrial dynamics

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Neural Regeneration Research 2023年第1期18卷 219-225页

作者： An Beckers Luca Masin Annelies Van Dyck steven bergmans Sophie Vanhunsel Anyi Zhang Tine Verreet Fabienne EPoulain Karl Farrow Lieve Moons Neural Circuit Development and Regeneration Research Group Animal Physiology and Neurobiology SectionDepartment of BiologyKatholieke Universiteit LeuvenLeuvenBelgium Poulain Lab Department of Biological SciencesUniversity of South CarolinaColumbiaSCUSA Neuro-Electronics Research Flanders Vlaams Instituut voor Biotechnologie(VIB)LeuvenBelgium Leuven Brain Institute LeuvenBelgium Imec LeuvenBelgium

Axonal regeneration in the central nervous system is an energy-intensive *** contrast to mammals,adult zebrafish can functionally recover from neuronal *** raises the question of how zebrafish can cope with this high energy *** previously showed that in adult zebrafish,subjected to an optic nerve crush,an antagonistic axon-dendrite interplay exists wherein the retraction of retinal ganglion cell dendrites is a prerequisite for effective axonal *** postulate a‘dendrites for regeneration’paradigm that might be linked to intraneuronal mitochondrial reshuffling,as ganglion cells likely have insufficient resources to maintain dendrites and restore axons ***,we characterized both mitochondrial distribution and mitochondrial dynamics within the different ganglion cell compartments(dendrites,somas,and axons)during the regenerative *** nerve crush resulted in a reduction of mitochondria in the dendrites during dendritic retraction,whereafter enlarged mitochondria appeared in the optic nerve/tract during axonal *** dendritic regrowth in the retina,mitochondrial density inside the retinal dendrites returned to baseline ***,a transient increase in mitochondrial fission and biogenesis was observed in retinal ganglion cell somas after optic nerve *** together,these findings suggest that during optic nerve injury-induced regeneration,mitochondria shift from the dendrites to the axons and back again and that temporary changes in mitochondrial dynamics support axonal and dendritic regrowth after optic nerve crush.

关键词： axonal regeneration central nervous system dendrite remodeling energy metabolism fission mitochondria mitochondrial trafficking optic nerve crush retina zebrafish

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