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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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Polyethylene glycol has immunoprotective effects on sciatic allografts, but behavioral recovery and graft tolerance require neurorrhaphy and axonal fusion

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Neural Regeneration Research 2025年第4期20卷 1192-1206页

作者： Tyler A.Smith Liwen Zhou Cameron L.Ghergherehchi Michelle Mikesh Cathy Z.Yang Haley O.Tucker JuliAnne Allgood Jared S.Bushman George D.Bittner Department of molecular Biosciences University of Texas at AustinAustinTXUSA Department of Neuroscience University of Texas at AustinAustinTXUSA division of Pharmaceutical Sciences University of WyomingLaramieWYUSA

Behavioral recovery using(viable)peripheral nerve allografts to repair ablation-type(segmental-loss)peripheral nerve injuries is delayed or poor due to slow and inaccurate axonal ***,such peripheral nerve allografts undergo immunological rejection by the host immune *** contrast,peripheral nerve injuries repaired by polyethylene glycol fusion of peripheral nerve allografts exhibit excellent behavioral recovery within weeks,reduced immune responses,and many axons do not undergo Wallerian *** relative contribution of neurorrhaphy and polyethylene glycol-fusion of axons versus the effects of polyethylene glycol per se was unknown prior to this *** hypothesized that polyethylene glycol might have some immune-protective effects,but polyethylene glycol-fusion was necessary to prevent Wallerian degeneration and functional/behavioral *** examined how polyethylene glycol solutions per se affect functional and behavioral recovery and peripheral nerve allograft morphological and immunological responses in the absence of polyethylene glycol-induced axonal ***-type sciatic nerve injuries in outbred Sprague–Dawley rats were repaired according to a modified protocol using the same solutions as polyethylene glycol-fused peripheral nerve allografts,but peripheral nerve allografts were loose-sutured(loose-sutured polyethylene glycol)with an intentional gap of 1–2 mm to prevent fusion by polyethylene glycol of peripheral nerve allograft axons with host *** to negative control peripheral nerve allografts not treated by polyethylene glycol and in contrast to polyethylene glycol-fused peripheral nerve allografts,animals with loose-sutured polyethylene glycol peripheral nerve allografts exhibited Wallerian degeneration for all axons and myelin degeneration by 7 days postoperatively and did not recover sciatic-mediated behavioral functions by 42 days *** morphological signs of rejection,such as col

关键词： allograft rejection axotomy macrophage myelin nerve repair polyethylene glycol(PEG) sciatic nerve T cell transplantation Wallerian degeneration

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A-kinase anchoring protein-mediated compartmentalization of pro-survival signaling in the retina

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Neural Regeneration Research 2025年第2期20卷 479-480页

作者： Joanna Mackiewicz Tomasz Boczek Department of molecular Neurochemistry Medical University of LodzLodzPoland

The retina plays a fundamental role in the process of vision,serving as the primary interface between external visual stimuli and the central nervous *** the retina is exposed to a variety of environmental stresses and deleterious insults,it is susceptible to a spectrum of pathological conditions that can detrimentally affect *** often leads to irreversible vision loss due to the injury of specific cell *** instance,inherited retinal degeneration and age-related macular degeneration can lead to the death of photoreceptors,while conditions like glaucoma and optic nerve injury can result in the loss of ganglion *** precise pathological mechanisms driving retinal degeneration remain largely elusive,although research utilizing mouse models suggests that disruptions in intracellular signal transduction pathways may play a pivotal *** pathways within the retina orchestrate various aspects of retinal physiology,including phototransduction,synaptic transmission,and neuronal survival.

关键词： degeneration utilizing irreversible

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Olfactory receptors in neural regeneration in the central nervous system

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Neural Regeneration Research 2025年第9期20卷 2480-2494页

作者： Rafael Franco Claudia Garrigós Toni Capó Joan Serrano-Marín Rafael Rivas-Santisteban Jaume Lillo molecular Neurobiology Laboratory Department of Biochemistry and Molecular BiomedicineFacultat de BiologiaUniversitat de BarcelonaBarcelonaSpain CiberNed Network Center for Biomedical Research in Neurodegenerative Diseases Spanish National Health Institute Carlos ⅢMadridSpain School of Chemistry Universitat de BarcelonaBarcelonaSpain Department of Biochemistry and physiology School of Pharmacy and Food SciencesUniversitat de BarcelonaBarcelonaSpain Laboratory of Computational Medicine Biostatistics UnitFaculty of MedicineAutonomous University of BarcelonaCampus BellaterraBarcelonaSpain

Olfactory receptors are crucial for detecting odors and play a vital role in our sense of smell,influencing behaviors from food choices to emotional *** receptors also contribute to our perception of flavor and have potential applications in medical diagnostics and environmental *** ability of the olfactory system to regenerate its sensory neurons provides a unique model to study neural regeneration,a phenomenon largely absent in the central nervous *** gained from how olfactory neurons continuously replace themselves and reestablish functional connections can provide strategies to promote similar regenerative processes in the central nervous system,where damage often results in permanent *** the molecular and cellular mechanisms underpinning olfactory neuron regeneration could pave the way for developing therapeutic approaches to treat spinal co rd injuries and neurodegenerative diseases like Alzheimer's *** ctory receptors are found in almost any cell of eve ry orga n/tissue of the mammalian *** ectopic expression provides insights into the chemical structures that can activate olfactory *** addition to odors,olfactory receptors in ectopic expression may respond to endogenous compounds and molecules produced by mucosal colonizing *** analysis of the function of olfactory receptors in ectopic expression provides valuable information on the signaling pathway engaged upon receptor activation and the receptor's role in proliferation and cell differentiation *** review explo res the ectopic expression of olfa ctory receptors and the role they may play in neural regeneration within the central nervous system,with particular attention to compounds that can activate these receptors to initiate regenerative *** suggests that olfactory receptors could serve as potential therapeutic targets for enhancing neural repair and recovery following central nervous syste

关键词： adenosine receptors adrenergic receptors ectopic expression G proteincoupled receptors glia neurons

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Tilting homeostatic and dyshomeostatic microglial balance in health and disease:transforming growth factor-beta1 as a critical protagonist

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Neural Regeneration Research 2025年第10期20卷 2895-2897页

作者： Nicolas Hugues Yu Luo Department of molecular and Cellular Biosciences University of CincinnatiCincinnatiOHUSA Neuroscience Graduate Program University of CincinnatiCincinnatiOHUSA division of Immunobiology Cincinnati Children’s Hospital Medical CenterUniversity of Cincinnati College of MedicineCincinnatiOHUSA

Adult microglia,by continuously sensing changes in their environment and communicating with nearly all brain cell types,are considered to be the immune sentinels of the *** the healthy central nervous system(CNS),microglia display a unique molecular homeostatic signature(i.e.,Tmem119,P2ry12,Sall1,Siglech,Gpr34,and Hexb)(Figure 1A).

关键词： Figure signature critical

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Progenies of NG2 glia: what do we learn from transgenic mouse models ?

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Neural Regeneration Research 2021年第1期16卷 43-48页

作者： Qilin Guo Anja Scheller Wenhui Huang molecular physiology Center for Integrative Physiology and Molecular Medicine(CIPMM)University of SaarlandHomburgGermany

In the mammalian central nervous system,nerve-glia antigen 2(NG2)glia are considered the fourth glial population in addition to astrocytes,oligodendrocytes and *** fate of NG2 glia in vivo has been carefully studied in several transgenic mouse models using the Cre/loxP *** is a clear agreement that NG2 glia mainly serve as progenitors for oligodendrocytes and a subpopulation of astrocytes mainly in the ventral forebrain,whereas the existence of a neurogenic potential of NG2 glia is lack of adequate *** mini review summarizes the findings from recent studies regarding the fate of NG2 glia during *** will highlight the age-and-region-dependent heterogeneity of the NG2 glia differentiation *** will also discuss putative reasons for inconsistent findings in various transgenic mouse lines of previous studies.

关键词： astrogliogenesis cell fate Cre/loxP system development differentiation embryonic brain neurogenesis NG2 glia oligodendrocyte lineage oligodendrocyte precursor cells

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Oligodendroglial GABAergic Signaling:More Than Inhibition!

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Neuroscience Bulletin 2021年第7期37卷 1039-1050页

作者： Xianshu Bai Frank Kirchhoff Anja Scheller molecular physiology Center for Integrative Physiology and Molecular Medicine(CIPMM)University of Saarland66421 HomburgGermany

GABA is the main inhibitory neurotransmitter in the CNS acting at two distinct types of receptor:ligand-gated ionotropic GABAA receptors and G protein-coupled metabotropic GABAB receptors,thus mediating fast and slow inhibition of excitability at central *** signal transmission has been intensively studied in neurons in contrast to oligodendrocytes and their precursors(OPCs),although the latter express both types of GABA *** studies focusing on interneuron myelination and interneuron-OPC synapses have shed light on the importance of GABA signaling in the oligodendrocyte *** this review,we start with a short summary on GABA itself and neuronal GABAergic ***,we elaborate on the physiological role of GABA receptors within the oligodendrocyte lineage and conclude with a description of these receptors as putative targets in treatments of CNS diseases.

关键词： GABA GABAA receptor GABAB receptor OPC Oligodendrocyte lineage

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Implications of Olig2 silencing in oligodendrocyte precursor cells

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Neural Regeneration Research 2023年第12期18卷 2649-2650页

作者： Li-Pao Fang Xianshu Bai molecular physiology Center for Integrative Physiology and Molecular MedicineUniversity of SaarlandHomburgGermany

Oligodendrocytes(OLs)are the only myelinforming cells in the central nervous *** differentiation from OL precursor cells(OPCs)occurs throughout life and is mediated by numerous intrinsic and extrinsic *** transcription factor 2(Olig2),a basic helix-loophelix transcription factor,is one of the intrinsic factors that specify the OL *** is expressed by both OPCs and OLs,and no variant of Olig2 has yet been identified in *** the function of Olig2 in OL maturation and myelination is still under debate.

关键词： Olig2 myelin cytes

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Inhibition of cytochrome P450 by furanocoumarins in grapefruit juice and herbal medicines

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Acta Pharmacologica Sinica 2004年第2期25卷 3-10页

作者： Lian-qing GUO1, Yasushi YAMAZOE2Department of Clinical Pharmacology, Jinling Hospital, Nanjing 210002, China 2division of Drug metabolism and molecularToxicology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan Department of Clinical Pharmacology Jinling Hospital Nanjing 210002 division of Drug metabolism and molecular Toxicology Graduate School of Pharmaceutical Sciences Tohoku University Sendai 980-8578 日本

Furanocoumarins (psoralens) exist in various plants and some of them are used to cure skin diseases. Thesechemicals draw attentions recently because of their abilities to arouse drug interaction through inhibition of cyto-chrome P450. Grapefruit juice is a well-known example for food-drug interaction. But in vitro and in vivo studieshave shown that the causative components are mainly furanocoumarin derivatives with geranyloxy side chains. Invitro experiments confirmed that furanocoumarins from grapefruit juice are both competitive and mechanism-based inhibitors of CYP3A4. Although the inhibition appeared to be stronger in the dimers than that in the monomers,all contribute comprehensively to the grapefruit juice-drug interaction. Further experiments with other furanocoumarinsand related citrus fruits or umbelliferous herbal medicines indicate that drug interaction might also occur with stuffsother than grapefruit juice, especially with traditional medicine.

关键词： psoralens grapefruit juice herbal medicine enzyme inhibitors cytochrome P-450 enzyme system drug interaction

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PTEN in liver diseases and cancer

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World Journal of Gastroenterology 2010年第37期16卷 4627-4633页

作者： Marion Peyrou Lucie Bourgoin Michelangelo Foti Department of Cellular physiology and metabolism Geneva Medical Faculty Centre Médical Universitaire

The phosphoinositide 3-kinase (PI3K)/phosphatase and tensin homolog (PTEN)/Akt axis is a key signal transduction node that regulates crucial cellular functions, including insulin and other growth factors signaling, lipid and glucose metabolism, as well as cell survival and apoptosis. In this pathway, PTEN acts as a phosphoinositide phosphatase, which terminates PI3Kpropagated signaling by dephosphorylating PtdIns(3,4)P2 and PtdIns(3,4,5)P3. However, the role of PTEN does not appear to be restricted only to PI3K signaling antagonism, and new functions have been recently discovered for this protein. In addition to the well-established role of PTEN as a tumor suppressor, increasing evidence now suggests that a dysregulated PTEN expression and/or activity is also linked to the development of several hepatic pathologies. Dysregulated PTEN expression/activity is observed with obesity, insulin resistance, diabetes, hepatitis B virus/hepatitis C virus infections, and abusive alcohol consumption, whereas mutations/deletions have also been associated with the occurrence of hepatocellular carcinoma. Thus, it appears that alterations of PTEN expression and activity in hepatocytes are common and recurrent molecular events associated with liver disorders of various etiologies. These recent f indings suggest that PTEN might represent a potential common therapeutic target for a number of liver pathologies.

关键词： Phosphatase and tensin homolog Obesity Insulin resistance Non-alcoholic fatty liver diseases Steatosis Steatohepatitis Fibrosis Hepatocellular carcinoma Viral hepatitis Alcohol

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