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Heterogeneity of mature oligodendrocytes in the central nervous system

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Neural Regeneration Research 2025年第5期20卷 1336-1349页

作者： Chao Weng Adam M.R.Groh Moein Yaqubi Qiao-Ling Cui jo anne Stratton G.R.Wayne Moore Jack P.Antel Neuroimmunology Unit Montreal Neurological Institute-HospitalDepartment of Neurology and NeurosurgeryMcGill UniversityMontrealQCCanada Department of Neurology Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina

Mature oligodendrocytes form myelin sheaths that are crucial for the insulation of axons and efficient signal transmission in the central nervous *** evidence has challenged the classical view of the functionally static mature oligodendrocyte and revealed a gamut of dynamic functions such as the ability to modulate neuronal circuitry and provide metabolic support to *** the recognition of potential heterogeneity in mature oligodendrocyte function,a comprehensive summary of mature oligodendrocyte diversity is *** delve into early 20th-century studies by Robertson and Río-Hortega that laid the foundation for the modern identification of regional and morphological heterogeneity in mature ***,recent morphologic and functional studies call into question the long-assumed homogeneity of mature oligodendrocyte function through the identification of distinct subtypes with varying myelination ***,modern molecular investigations,employing techniques such as single cell/nucleus RNA sequencing,consistently unveil at least six mature oligodendrocyte subpopulations in the human central nervous system that are highly transcriptomically diverse and vary with central nervous system *** and disease related mature oligodendrocyte variation denotes the impact of pathological conditions such as multiple sclerosis,Alzheimer's disease,and psychiatric ***,caution is warranted when subclassifying mature oligodendrocytes because of the simplification needed to make conclusions about cell identity from temporally confined *** studies leveraging advanced techniques like spatial transcriptomics and single-cell proteomics promise a more nuanced understanding of mature oligodendrocyte *** research avenues that precisely evaluate mature oligodendrocyte heterogeneity with care to understand the mitigating influence of species,sex,central nervous system region,age,and disease,

关键词： aging central nervous system diseases electron microscopy heterogeneity immunohistochemistry myelin sheath natural history neuroglia oligodendroglia single-cell gene expression analysis

Inflammatory myofibroblastic tumor of the distal common bile duct:Literature review with focus on pathological examination

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World journal of Clinical Cases 2023年第20期11卷 4734-4739页

作者： Fleur Cordier anne Hoorens Liesbeth Ferdinande jo Van Dorpe David Creytens Department of Pathology Ghent University HospitalGhent 9000Belgium

Inflammatory myofibroblastic tumor(IMT)of the biliary tract is rare,and often difficult to diagnose or to distinguish from other tumors due to its atypical clinical presentation and nonspecific radiological ***,IMTs are(myo)fibroblastic neoplasms with a prominent inflammatory *** are characterized by receptor tyrosine kinase gene rearrangements,most often involving an anaplastic lymphoma kinase(ALK)*** final diagnosis of IMT depends on histopathology and immunohistochemical *** this manuscript,we provide a clinical and morphomolecular overview of IMT and the difficulties that may arise in using immunohistochemical and molecular techniques in diagnosing IMT.

关键词： Inflammatory myofibroblastic tumor Fluorescence in situ hybridization Nextgeneration sequencing Mesenchymal tumors of the gastrointestinal tract

Atm deficient zebrafish model reveals conservation of the tumour suppressor function and a role in fertility

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Genes & Diseases 2023年第2期10卷 381-384页

作者： Jeroen Vierstraete Charlotte Fieuws David Creytens jo Van Dorpe Andy Willaert anne Vral Kathleen BM Claes Center for Medical Genetics Department of Biomolecular MedicineGhent University Hospital and Ghent University9000 GhentBelgium Department of Human Structure and Repair Ghent University9000 GhentBelgium Cancer Research Institute Ghent (CRIG) Ghent University and Ghent University Hospital9000 GhentBelgium Department of Pathology Ghent University and Ghent University Hospital9000 GhentBelgium

Biallelic loss-of-function variants in ATM (Ataxia Telangiectasia Mutated) cause Ataxia Telangiectasia (AT), a rare disorder associated with cerebellar degeneration and ataxia, cancer predisposition, infertility, growth retardation, etc. ATM is a phosphoinositide 3-kinase-related kinase (PIKK) with a role in DNA repair and maintenance of genome stability. Studying a multisystem genetic disease like AT requires animal models to ascertain its pathogenesis at the level of tissues, organs and the organism. Due to its small size, cheap maintenance, large progeny, rapid development and initial transparency, zebrafish (Danio rerio) is an increasingly popular vertebrate model organism, suitable for genetic modifications and large-scale in vivo therapeutic screens as embryos are chemically permeable to small compounds. Currently, no zebrafish model for AT exists.1 We generated atm knock-outs through CRIPSR-Cas9 mutagenesis. We show that atm conserved its function as a tumour suppressor gene and is involved in gametogenesis and fertility. Therefore, this mutant is of great value for further studies investigating the role of atm in reproduction and tumorigenesis.

关键词： ATM function transparency

Philippine retinoblastoma initiative multi-eye center study 2010-2020

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International journal of Ophthalmology(English edition) 2024年第1期17卷 144-156页

作者： Roland joseph D.Tan Gary john V.Mercado Patricia E.Cabrera Paulita Pamela P.Astudillo Rolando Enrique D.Domingo josept Mari S.Poblete Charmaine Grace M.Cabebe Adriel Vincent R.Te Melissa anne S.Gonzales jocelyn G.Sy Beltran Alexis A.Aclan Jayson T.So Fatima G.Regala Kimberley Amanda K.Comia josemaria M.Castro Mara Augustine S.Galang Aldous Dominic C.Cabanlas Benedicto Juan E.Aguilar Gabrielle S.Evangelista jo Michael Maniwan Andrei P.Martin Calvin Y.Martinez john Alfred H.Lim Rena Ivy Bascuna Rachel M.Ng Kevin B.Agsaoay Kris Zanna A.Acluba-Arao Ellaine Rose V.Apostol Beatriz M.Prieto Department of Ophthalmology and Visual Sciences Philippine General HospitalManila 1000Philippines Department of Ophthalmology Baguio General Hospital and Medical CenterBaguio City 2600Philippines Department of Ophthalmology Manila Doctors HospitalManila 1000Philippines Department of Ophthalmology Rizal Medical CenterPasig City 1600Philippines Department of Ophthalmology Jose B.Lingad Memorial Regional HospitalPampanga 2000Philippines Department of Ophthalmology Southern Philippines Medical CenterDavao City 8000Philippines Department of Ophthalmology East Avenue Medical CenterQuezon City 1100Philippines Department of Ophthalmology Northern Mindanao Medical CenterCagayan de Oro City 9000Philippines Department of Ophthalmology Cebu Velez General HospitalCebu City 6000Philippines Legazpi Eye Center Legazpi City 4500Philippines Department of Ophthalmology Cagayan Valley Medical CenterTuguegarao City 3500Philippines

AIM:To provide a comprehensive and more representative national data on the disease,especially on treatment options and outcomes,and to determine access of retinoblastoma patients from Luzon,Visayas and Mindanao to eye care,and determine if access is associated with delay in consultation,staging and ***:Cohort study of retinoblastoma patients seen in eleven institutions located in the three major areas of the Philippines namely Luzon,Vizayas and Mindanao from ***:Totally 636 patients,involving 821 eyes,were ***(57%)were from Luzon and were seen in institutions in Luzon(72%).Annually,58±10 new cases were seen with 71%having unilateral *** delay of consultation remained long at 9(3,17)mo,longest in patients with unilateral disease(P<0.02)and those from the Visayas(P<0.003).Based on the International Retinoblastoma Staging System,only 35%of patients had Stage 1 while 47%already had extraocular *** was the most common treatment received by 484 patients while intravenous chemotherapy was received by *** were 250(39%)patients alive,195(31%)dead,85(13%)abandoned,17(3%)refused and 89(14%)with no ***:This study presents the largest cohort of retinoblastoma patients in the Philippines in terms of patients’and participating institutions’number and geographical location and type of institution(private and public).It also presents more comprehensive data on the treatments used and outcomes(survival,globe salvage,and vision retention rates).Delay in consultation was still long among patients leading to advanced disease stage and lower survival *** increasing capacity to diagnose and manage retinoblastoma in the country,the delay of consultation remains long primarily due to accessibility issues to eye care institutions especially in the Visayas and financial *** delay was still significant that overall survival rate remain low.

关键词： retinoblastoma Philippines clinical profile

CRISPR/Cas9-Targeted Knockout of Rice Susceptibility Genes OsDjA2 and OsERF104 Reveals Alternative Sources of Resistance to Pyricularia oryzae

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Rice science 2022年第6期29卷 535-544,I0023-I0030页

作者： Fabiano T.P.KTÁVORA anne Cécile MEUNIER Aurore VERNET Murielle PORTEFAIX joëlle MILAZZO Henri ADREIT Didier THARREAU Octávio LFRANCO Angela MEHTA Department of Genetics and Biotechnology Federal University of Juiz de ForaJuiz de Fora-MG 36036330Brazil Embrapa Genetic Resources and Biotechnology Brasília-DF 70770-917Brazil Genetic Improvement and Adaptation of Mediterranean and Tropical Plants Agricultural Research Center for International Development(CIRAD)Montpellier 34398 CEDEX 5France CIRAD-INRAe-Agro Institute University of MontpellierMontpellier 34000France Plant Health Institute of Montpellier CIRADMontpellier 34398France University of Montpellier National Institute of Agronomic ResearchResearch Institute for DevelopmentMontpellier SupAgroMontpellier 34398France Department of Genomics Science and Biotechnology Proteomics Analysis CenterCatholic University of BrasíliaBrasília-DF 71966-900Brazil S-Inova Biotech Catholic University of Dom BoscoCampo Grande-MS 79117-900Brazil

Rice genes OsDjA2 and OsERF104,encoding a chaperone protein and an APETELA2/ethylene-responsive factor,respectively,are strongly induced in a compatible interaction with blast fungus,and also have function in plant susceptibility validated through gene ***,we reported the CRISPR/Cas9 knockout of OsDjA2 and OsERF104 genes resulting in considerable improvement of blast resistance.A total of 15 OsDjA2(62.5%)and 17 OsERF104(70.8%)T_(0)transformed lines were identified from 24 regenerated plants for each target and used in downstream *** of homozygous T1 mutant lines revealed not only a significant decrease in the number of blast lesions but also a reduction in the percentage of diseased leaf area,compared with the infected control *** results supported CRISPR/Cas9-mediated target mutation in rice susceptibility genes as a potential and alternative breeding strategy for building resistance to blast disease.

关键词： gene editing plant-pathogen interaction Magnaporthe pathosystem plant immunity blast resistance S-gene rice

Macrophage polarization in nerve injury： do Schwann cells play a role？

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Neural Regeneration Research 2016年第1期11卷 53-57页

作者： jo anne Stratton Prajay T.Shah Department of Clinical Neurosciences University of Calgary Calgary Canada Hotchkiss Brain Institute Calgary Canada Department of Comparative Biology and Experimental Medicine University of Calgary Calgary Canada

In response to peripheral nerve injury, the inflammatory response is almost entirely comprised of infiltrating macrophages. Macrophages are a highly plastic, heterogenic immune cell, playing an indispensable role in peripheral nerve injury, clearing debris and regulating the microenvironment to allow for efficient regeneration. There are several cells within the microenvironment that likely interact with macrophages to support their function – most notably the Schwann cell, the glial cell of the peripheral nervous system. Schwann cells express several ligands that are known to interact with receptors expressed by macrophages, yet the effects of Schwann cells in regulating macrophage phenotype remains largely unexplored. This review discusses macrophages in peripheral nerve injury and how Schwann cells may regulate their behavior.

关键词： nerve macrophage traumatic injury Schwann cells polarization

Ependymal cells and multiple sclerosis: proposing a relationship

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Neural Regeneration Research 2020年第2期15卷 263-264页

作者： Dale Hatrock Nina Caporicci-nucci jo anne Stratton The Montreal Neurological Institute McGill UniversityMontrealCanada Integrated Program in Neuroscience McGill UniversityMontrealCanada

Multiple sclerosis (MS) currently affects ~2.5 million people worldwide. MS is typically diagnosed in young adults and is usually not fatal, meaning people live long lives with MS. Affected individuals usually suffer from progressive physical and/or cognitive disability, often including fatigue (89.6%), depression (53.9%), memory loss (49.0%), motor or sensory dysfunction (76.4%, 70.4%) and urinary incontinence (50.8%).

关键词： multiple sclerosis relationship dysfunction

Integrate Omics Data and Molecular Dynamics Simulations toward Better Understanding of Human 14-3-3 Interactomes and Better Drugs for Cancer Therapy

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journal of Genetics and Genomics 2015年第10期42卷 531-547页

作者： jo anne J.Babula Jing-Yuan Liu Department of Pharmacology and Toxicology Indiana University School of Medicine Department of Computer and Information Science Indiana University Purdue University Indianapolis

The 14-3-3 protein family is among the most extensively studied, yet still largely mysterious protein families in mammals to date. As they are well recognized for their roles in apoptosis, cell cycle regulation, and proliferation in healthy cells, aberrant 14-3-3 expression has unsurprisingly emerged as instrumentalin the development of many cancers and in prognosis. Interestingly, while the seven known 14-3-3 isoforms in humans have many similar functions across cell types, evidence of isoform-specific functions and localization has been observed in both healthy and diseased cells The strikingly high similarity among 14-3-3 isoforms has made it difficult to delineate isoform-specific functions and for isoform-specific targeting. Here, we review our knowledge of 14-3-3 interactome（s） generated by high- throughput techniques, bioinformatics, structural genomics and chemical genornics and point out that integrating the information with molecular dynamics （MD） simulations may bring us new opportunity to the design of isoform-specific inhibitors, which can not only be used as powerful research tools for delineating distinct interactomes of individual 14-3-3 isoforms, but also can serve as potential new anti-cancer drugs that selectively target aberrant 14-3-3 isoform.

关键词： Interactome Chemical genomics Structural genomics Molecular dynamics simulation

Thermal conditioning of quail embryos has transgenerational and reversible long‑term effects

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journal of Animal Science and Biotechnology 2023年第6期14卷 2428-2438页

作者： Anais Vitorino Carvalho Christelle Hennequet‑Antier Romuald Rouger joel Delaveau Thierry Bordeau Sabine Crochet Nathalie Courousse Frederique Pitel anne Collin Vincent Coustham INRAE Universite de ToursBOA37380 ToursNouzillyFrance INRAE CNRSIFCEUniversite de ToursPRC37380 ToursNouzillyFrance Universite Paris-Saclay INRAEMaIAGE78350 Jouy‑en‑JosasFrance INRAE Bioinf OmicsUniversite Paris-SaclayMIGALE Bioinformatics Facility78350 Jouy‑en‑JosasFrance SYSAAF 37380 NouzillyFrance INRAE PEAT37380 NouzillyFrance INRAE INPTENVTUniversite de ToulouseGenPhySE31326 Castanet‑TolosanFrance INRAE Universite de Pau&Pays de L’AdourNuMeAE2S UPPAAquapole64310 Saint‑Pee‑Sur‑NivelleFrance

Background In the current context of global warming,thermal manipulation of avian embryos has received increasing attention as a strategy to promote heat tolerance in avian species by simply increasing the egg incubation ***,because of their likely epigenetic origin,thermal manipulation effects may last more than one generation with consequences for the poultry *** this work,a multigenerational and transgenerational analysis of thermal manipulation during embryogenesis was performed to uncover the long-term effects of such *** Thermal manipulation repeated during 4 generations had an effect on hatchability,body weight,and weight of eggs laid in Japanese quails,with some effects increasing in importance over ***,the effects on body weight and egg weight could be transmitted transgenerationally,suggesting non-genetic inheritance *** hypothesis is reinforced by the observed reversion of the effect on growth after five unexposed ***,a beneficial effect of thermal manipulation on heat tolerance was observed a few days after hatching,but this effect was not *** Our multigenerational study showed that thermal conditioning of quail embryos has a beneficial effect on post-hatch heat tolerance hampered by transgenerational but reversible defects on *** that no genetic variability underlies these changes,this study provides the first demonstration of epigenetic inheritance of traits induced by environmental temperature modification associated with long-term impacts in an avian species.

关键词： Avian Embryo Programming Temperature Transgenerational inheritance