姓名徐评议年龄44学科、专业神经病学NameXuPingyiDateofbirth1964-4-14MajorNeurology职称教授传真8775032联系电话13002087616positionProfessorFax8775032Tel13002087616电子邮件pingyixu@sina.comE-mailpingyixu@sina.com一、申请导师简介(中英文,500字以内)Introductionofsupervisor(inbothChineseandEnglish;maximum500words)(包括研究方向及专业特长等Pleaseincludethefieldofresearchandspeciality)徐评议,男,44岁,教授,博士生导师。1994年中山医科大学神经病学博士,2000-2002年美国Baylor医学院博士后,2006-2007年美国Kansas大学高级访问学者。主要从事帕金森病、老年性痴呆和Wilson病等中枢神经遗传变性病的临床、病理、分子及细胞生物学研究。先后主持美国PDF基金1项、国家“863”专项1项,国家自然科学基金3项,参与国家“十一五”攻关项目1项,获28项基金资助。发表论文109篇,被SCI收入15篇,总影响因子98,被引513次。任中华医学会神经病学分会运动障碍组委员,广东省“千百十”省级人才培养对象,《神经病学-神经系统遗传性疾病》副主编、《神经遗传病学-第三版》和《临床神经病学》编委;《AmericanAcademyofNanomedicine》和《中华神经医学杂志》等杂志编委,《CMJ》、《中山大学医学科学版》、《中国医学大学学报》等杂志特约审稿人,美国NeuroscienceAssociation会员。代表性论文:NatureGenetics.2003;Neurology.2002;ArchivesNeurology.2001;CMJ.2004.HumanMutations.2005;AJA.2007;Carcinogenesis.2007;FASEBJ.2008;Hepatology.2008;JNeurochemistry.2008。研究成果获1998年国家教委科技进步一等奖、1999年卫生部科技进步一等奖(第一完成人)及2000年国家科技进步二等奖(第二完成人)。PingyiXuistheprofessorandPhDsupervisorofNeurologyofSunYat-senUniversityofChinasince2005andarecognizedexpertinthebasicandclinicalresearchfieldofParkinson'sdisease(PD),Alzheimer’sdiseaseaswellasWilsondisease.HegraduatedfromSunYat-senUniversityofMedicalScienceswithPhDandMDin1994andhasbeenworkingatthemolecularresearchofneuraldegenerativediseaseintheUniversity.Since1993,hehasbeenawarded28grantsforNeuroscienceresearchinChinasuchasagreat“863”project,3itemsofChineseNaturalScienceFoundationandalsoworkingasakeyboardmemberofnational“10.5”healthcareproject,andgotonegrantawardedbyAmericanParkinson’sDiseaseFoundation/Parkinson’sDiseaseFoundationinUniteStates.In2000,hecametoBaylorCollegeofMedicinetostarthispostdoctoralstudyonParkinsondiseaseinthelaboratoryofNeuroscience.In2006-2007,hevisitedKansansUniversitymedicalcenterasseniorvisitor.Since1994,hepublished109articlesamongthem15papers(I.F.98,citations513)publishedinNatureGenetics2003,Neurology2002,ArchivesNeurology2001,CMJ2004,HumanMutations2005,AJA2007,Carcinogenesis2007,FASEBJ.2008;Hepatology.2008;JNeurochemistry.2008,etal.HisworkhasbeenawardedmanygreatprizesinChinasuchasatopChinesenationaltechnicalandscienceprize.DoctorXuisreviewmembersofmanyjournalsandalsoamemberofNeuroscienceAssociationofAmerican.2二、招收博士后拟承担或开展的主要研究任务(中英文)maintaskforpost-doctoronresearch(inbothChineseandEnglish)帕金森病多巴胺神经元凋亡的分子调控机制(中美合作)多巴胺能神经元内异常蛋白聚集与帕金森病发生发展密切相关。泛素-蛋白酶体通路是多巴胺能神经元内调控蛋白降解的主要途径,而帕金森病病人普遍存在UPS功能的异常。本研究将以新型蛋白酶体抑制剂诱导的离体和在体模型为基础,全面深入研究的UPS和lysosome-autophagy通路之间的关系,并以rapamycin作为autophagy的诱导剂,初步探讨上调autophagy作为治疗PD的方法的可能性。TheapoptosismolecularsignalingofDAneuronsinPakinson’sdiseaseTheaggregationofabnormalproteinsindopaminergicneuron(DA)correlatescloselywiththedevelopmentofPakinson’sdisease(PD).Ubiquitin-proteasomespathway(UPS)mayplayitsmainroleinabnormaldegradationinDAcells,anditsdysfunctionwillresultingenerallyPD’ssymptoms.UsingourdevelopedPD’smodels(invivoandinvitro)thatareinducedbyanewtypeofproteasomesinhibitor(PI),thestudyisaimedtoinvestigatethepathologicrelationshipbetweenUPSandlysosome-autophagyinDAneurons,andtoexplorethepossibilityofPDfunctionaltherapythroughupgradingautophagyinducedbyrapamycin.帕金森病早期诊断的生物标记及其靶向治疗研究帕金森病患者出现临床症状前10-20年的时间内,黑质多巴胺能神经元已有大量变性和死亡,但其分子机制仍未明确,尚无有效的早期诊断指标和根本性防治手段。主要研究内容、预期目标:1.以Nurr1基因功能为研究核心,利用线虫模式和RNAi干扰技术调控Nurr1基因表达,应用单细胞切割和生物芯片等技术,研究Nurr1基因在个体发育、成年、衰老过程中对DA神经元表型和功能的影响,阐明在此过程中Nurr1基因的信号调控和效应基因的变化,在分子水平上揭示帕金森病的发病机制。2.观察500-1000例PD患者血淋巴细胞Nurr1基因多态性、表达水平及检测6种Nurr1变异体与PD的相关性;分析外周血淋巴细胞中Nurr1基因的mRNA水平和多态性是否可作为PD早期临床诊断的生物标记?6种Nurr1基因变异体中是否存在PD发病的高危险因子?3.在细胞和动物整体水平上,全面评估Nurr1激动剂的抗PD保护作用。在稳定的人HEK-293和多巴胺细胞体系中,分析多种小分子Nurr1激动剂对Nurr1、Nur77或Nor1等基因的激动作用,观察由此引起的不同的动物生物学效应,筛选这些小分子物质在Nurr1、TH、DAT等基因的调控中是否存在种群选择、以及是否同时能够抑制多巴胺代谢另一关键酶MAO-B的活性,从而增加体内多巴胺含量,探讨和筛选这些小分子物质特别是SH1能否作为潜在药物进行帕金森病早期防治的可行性。3BiomarkersforearlydiagnosisandtargetedtherapyofPDManyDAneuronsinsubstantianigrodiedinPDpatientseven10-20yearsbeforePDsymptoms.HoweveruntillnowPD’smolecularmechanismremainsunknownduringtothedeficientofPDbiomarkersforearlydiagnosis,activepreventionandeffectivetreatment.Nurr1,atranscriptionfactor,isessentialforthedevelopmentofnigraldopaminergicneuronphenotypeandmaintenance.Thegenedefectiveordecreasedexpressioncoulddown-regulatedthedevelopmentandsurvivalofmidbrainDAergicneuronsandbeanimportantriskfactorassociatedwithPD.Thus,theNurr1geneactivatorasatargettherapymaybeaninnovativestrategyforthetreatmentofPD.Specificaimandexpectingresultsinthisproject:1.ForinvestigatingthefunctionofNurr1gene,wewillapplyC.eleganmodels,RNAi,singlecelldissection,biochipsandothertechnologiestostudysystematicallyNurr1gene’seffectsanditssignalingpathwayonPDpatientsduringtheprocessofontogenesis,maturationandagingofDAneuronsinsubstantianigro,andillustratethesignalregulationofNurr1forrevealingthemolecularpathogenesisofPD.2.Observethepolymorphism,geneexpressionofNurr1inperipheralbloodlymphocytesof500-1000PDpatientsfordetectingtherelationshipbetweenNurr1variantsandPDbiomarkersaswellasevaluatingtheriskofPDinChinesepopulation.3.AssessNurr1activeeffection