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90 个结果
  • 简介:以便学习TGF-beta1结构功能细节,重组体老鼠TGF-beta1成熟形式细菌被表示。TGF-beta1(氨基酸279-390)112氨基酸carboxyl终端部分合成被一个可诱导基因表示系统基于抗菌素T7RNA控制。这个系统允许重组体TGF-beta1活跃、选择合成。减少条件下面SDS-polyacrylamide胶化上决定表示TGF-alpha1单体分子量是大约13kD。连续净化洗纯化步是足够净化表示产品同质单个胶化过滤结合了。氨基终端定序表明重组体蛋白质N终端出版数据相同。西方污点分析,重组体多肽对polyclonalTGF-beta1抗体显示出优秀antigenicity。在这研究表示成熟重组体老鼠TGF-beta1提供一个有用工具因为未来详细说明了结构、功能研究。

  • 标签: 转化生长因子-β1 重组表达 包涵体 提纯 抗原性
  • 简介:Thereareabout17chromosomesinyeastSaccharomycescerevisiae.Amiddlesizedchromosome,chromosomeV,waschoseninthisworkforstudyingandconstructingthephysi-calmaps.ChromosomeVfromstrainA364awasisolatedbypulsed-fieldgradientgelelectrophoresis(PFGE).GelslicescontainingchromosomeVDNAweredigestedwithtworarecuttingenzymes,NotⅠandSfiⅠ,andthree6-Ntrecognizingenzymes,SmaⅠ,SstⅡandApaⅠ.Severalstrategies-partialorcompletedigestions,digestionwithdifferentsetsoftwoenzymes,andhybrid-izationwithclonedgeneticallymappedprobes(CAN1,URA3,CEN5,PRO3,CHO1,SUP19,RAD51,RAD3)——wereusedtoaligntherestrictionfragments.Thereare9,9,15,17,and20sitesforNotⅠ,SfiⅠ,SmaⅠ,SstⅡandApaⅠrespectivelyinthemapoftheA364achromosomeV.Itstotallengthwascalculatedtobe620Kb(Kilo-bases).Thedistributionsofthecuttingsitesforthesefiveenzymesthroughthewholechromosomearenotuniform.Acomp-arisonbetweenthephysicalmapandthegeneticmapwasalsomade.

  • 标签: YEAST chromcsome V macro-physical map DNA
  • 简介:Amurinemacrophage-likecelllineJ774,acquired,inresponsetoLPS,anabilitytokilltumornecrosisfactor(TNF)-insensitivetargetP815mastocytomacellswhereasanothercellline,P388D1didnot,LPStriggeredsignalingmechanismsbetweenthetwocelllineswerecomparedwithanaimtoinquireaboutthepossiblenatureoftheabove-mentioneddifference,TheresultswhowedthattwocelllinesrespondtoLPS-treatmentbyparallelactivationofbothphospholipasesCandA2(PLCandPLA2)toapproximatelythesameextent.ThemaximumresponseoftothenzymesofJ774cellswasnotedwithin10minthetreatmentwhereasthatofP388D1cellsrequiredmorethan20min,TheotherpropertiesofLPS-responsiveenzymesstudiedweresimilarbetweentwocelllines,includingActivationofPLCandPLA2andPKCinmacrophagesbyLPS.Ca2+augmentationofenzymeactivation,participationofguaninenucleotidebinding(G)proteinsintheinitialactivationpreocesses,andinhibitionofenzymeactivationbythepriortreatmentofcellswithcholeraorpertussistoxinsetc.Moreover,LPS-triggeredactivationofPLCandPLA2wasfoundtobefollowedbytheincreaseofPKCactivitiesinbothcelllines.Inspiteofthesesimilarities.J774cellspossessedbothbasicandacidicformsofPKCactivities,whileP388D1cellsownedonlyPKCofbasicform,Nevertheless,thequestionwhyJ774cellsbutnotP388D1cells,canacquirethetumoricidalactivity,aganistP815,cellsfollowingLPStreatmentrematinstobeanswered.

  • 标签: 鼠巨噬细胞细胞系 磷脂酶A2 磷脂酶C 蛋白激酶C LPS诱导激活
  • 简介:NAC家庭基因编码涉及多样生物过程植物特定抄写因素。在这研究,ArabidopsisNAC基因ATAF1被发现被干旱导致,高咸度,abscisic酸(骆驼毛织物),甲基jasmonate,机械伤害,并且Botrytiscinerea感染。ATAF1重要正式就职受到干旱或高咸度骆驼毛织物缺乏变异aba2被发现,揭示表示骆驼毛织物无关机制。ArabidopsisATAF1-overexpression线显示了许多改变显型,包括侏儒症和短主要根。而且,vivo,实验显示ATAF1是真正管理者modulating植物对许多不能生活压力和necrotrophic病原体感染回答。ArabidopsisATAF1Overexpression增加了植物敏感到骆驼毛织物,盐,和氧化压力。特别,ATAF1overexpression种,然而并非异种排队显示出显著地提高植物忍耐干旱。另外,ATAF1overexpression提高了植物危险性necrotrophic病原体B。cinerea,但是没改变P无毒害或剧毒紧张引起疾病症状。syringaepv西红柿DC3000。转基因植物overexpressingATAF1对氧化应力过分敏感,建议反应氧中介可能与响应病原体和不能生活压力调停ATAF1发信号有关。

  • 标签: 生物过程 应激反应 拟南芥 双功能 转基因植物 病原体感染
  • 简介:尽管许多进步在理解花机关身份怎么发展期间是坚定被取得了,更少花机关怎么晚花发展阶段被详细描述被知道。这里,我们描述新奇花异种,起皱花瓣和stamens1(wps1),它在花瓣和雄蕊发展显示出缺点。基因分析显示那wps1异种相应于染色体3手臂一个单个后退地点。wps1异种机关早发展在野类型类似于那,并且异种malfunction晚发展阶段开始,显示花瓣和雄蕊外观上一个缺点。成熟花,异种花瓣和雄蕊细丝被起皱或合拢,并且花瓣和雄蕊细丝L1层下面的细胞形态学是反常。花机关身份基因表达式模式没与野类型相比wps1异种被影响,这被发现,所有花机关未改变开发一致。而且,花瓣不同类型表皮房间身份被维持。组织学分析证明wps1花,所有花瓣不规则地被合拢,并且花瓣有系结构,当内部房间形状和安排畸形、未组织起来时。把结果基于这些,我们建议Wps1下游地行动到班B花机关身份基因,并且工作迟了花期间调制细胞区别发展阶段。

  • 标签: 花瓣 雄蕊 莲花 植物
  • 简介:GABAtransporter1(GAT1)takesimportantrolesinmultiplephysiologicalprocessesthroughtheuptakeandreleaseofGABA,buttheregulationofGAT1geneexpressionindifferenttissuesisrarelyknown.Toaddressthequestion,first,5'RapidamplificationofcDNAend(RACE)wasusedtodetermineGAT1transcriptionalstartingsitesinneonatalmousecerebralcortexandintestine,adultmousebrainandadultrattestis.Theproductsof5'RACEwereconfirmedbyDNAsequencing.WefoundthatthetranscriptofGAT1inneonatalmousecerebralcortexandadultmousebrainstartsatthesamesite(insideofexon1),whileinmouseintestine,GAT1startstranscriptioninintron1,andinrattestis,thetranscriptofGAT1hasanadditionaluntranslationexontothe5'direction.

  • 标签: GABA转移子1 复制开始位点 5'RACE 组织特异性
  • 简介:TounderstandtheDNA-methylationmediatedgenesilencingmechanisms,weanalyzedincellcultureofthepromoterfunctionoftheMAGE-A1gene,whichisfrequentlydemethylatedandover-expressedinhumanhepatocellularcarcinoma.WehaveestablishedthecorrelationoftheDNAmethylationofthepromoterCpGislandwithexpressionstatusofthisgeneinapaneloftheestablishedlivercancercelllines.ThecrucialCpGdinucleotide(s)withintheminimalpromotersubjectedtothecontrolmediatedbyDNAmethylationwithprofoundbiologicalfunctionswasalsodelineated.Furthermore,anovelsequence-specificDNA-proteininteractionatthe-30CpGdinucleotideupstreamofthegenewasfoundhavingavitalparttoplayintheDNAmethylationmediatedtranscriptionsilencingoftheMAGE-A1gene.OurresultswouldnotonlyprovidenewinsightsintotheDNAmethylationmediatedmechanismsovertranscriptionoftheMAGE-A1gene,butalsopavethewayforfurtherdefiningthecross-talkamongDNAmethylation,histonemodificationandchromatinremodelingindetail.

  • 标签: 二核苷酸 甲基化 转录 基因沉默 蛋白质 脱氧核糖核酸
  • 简介:谷物含纤维根系统包括首先偶然根(艺术),它在营养素和水举起起重要作用。关于位于AR开发下面的分子机制的当前知识仍然是有限。我们这里报导四米饭(OryzasativaL.)隔离异种从不同基因背景,所有哪个AR是有缺点形成。这些异种展出了侧面的根(LR)和gravitropism部分损失减少数字。也显示异种提高了敏感到N-1-naphthylphthalamic酸,极植物生长素运输一个禁止者(轻拍),显示变化影响了植物生长素运输。用四异种之一位置克隆表明它被一个guanine核苷酸交换因素loss-of-functionADP-ribosylation因素(OsGNOM1)引起。转基因植物显示出promoter::GUSRT-PCR和分析那OsGNOM1ARprimordia,脉管纸巾,LR,根尖端,叶子,花药和词根静脉被表示,类似于植物生长素一个分发模式。另外,OsPIN2,OsPIN5b和OsPIN9表情异种被改变。一起拿,这些调查结果显示OsGNOM1通过调整影响艺术形成轻拍。

  • 标签: 不定根 水稻 介导 家族 机场铁路 极性运输
  • 简介:叶绿体是从endosymbioticcyanobacteria演变植物特定细胞器。他们通过二进制分裂划分。叶绿体部门地点选择对称叶绿体部门是枢轴E。coli,房间中点部门地点放被Min系统动态摆动调整,它包括MinC,头脑和矿。植物头脑和矿相当或相同事物涉及叶绿体分割。MinC相当或相同事物仍然没在更高植物被识别。然而,象FtsZ一样蛋白质,ARC3,被发现地点放涉及叶绿体分割。这里,我们报导放1那个叶绿体部门地点(AtCDP1)是Arabidopsis涉及叶绿体部门地点放置新奇叶绿体部门蛋白质。AtCDP1房间部门显型殖民地细菌屏蔽一个ArabidopsiscDNA表示图书馆发现。AtCDP1Arabidopsis在年轻绿纸巾被表示。有多重部门地点伸长叶绿体loss-of-functioncdp1异种被观察。AtCDP1Overexpression也引起了一个叶绿体部门显型。蛋白质相互作用试金建议AtCDP1可以调停通过和ARC3相互作用放叶绿体部门地点。总的来说,我们结果显示AtCDP1是放系统,和这个系统工作机制叶绿体部门地点一个新奇部件原核生物房间传统MinCDE系统不同。

  • 标签: 定位系统 组成部分 拟南芥 叶绿体 网站
  • 简介:P28,a28kDproteinfromtoad(Bufobufogargarizans)oocytes,wasidentifiedbyusingP13^suc1-agaroseaffinitychromatography.Sequencehomologyanalysisofthefull-lengthcDNAofP28(GeneBankaccessionnumber:AF314091)indicatedthatitencodesaproteincontaining224amino-acidswithabout55%iden-titiesandmorethan70%positivestoencodesaproteincontaining224amino-acidswithabout55%iden-titiesandmorethan70%positivestohuman,ratormouseUCH-L1,andcontainshomologicalfunctionaldomainsofUCHfamily.Anti-p28monoclonalantibody,oninjectingintotheoocytes,couldinhibittheprogesterone-inducedresumptionofmeioticdivisioninadose-dependentmanner.TherecombinantproteinP28showedsimilarSDS/PAGEbehaviorstothenativeone,andpromotedubiquitinethylesterhydrolysis,aclassicalcatalyticreactionforubiquitincarboxylterminalhydrolases(UCHs).Theresultsinthispaperrevealthatanovelprotein,p28,existsinthetoadoocytes,isaUCHLlhomolog,wasengagedintheprocessofprogesterone-inducedoocytematurationpossiblythroughaninvolvementinproteinturnoveranddegradation.

  • 标签: 蟾蜍 卵母细胞成熟 p28 cDNA克隆 重组表达 蛙卵
  • 简介:γ-AminobutyricacidandGABAergicreceptorswerepreviouslyreportedtobedistributedinreproductivesystemsbesidesCNSandpredictedtoparticipateinthemodulationoftesticularfunction.γ-Aminobutyricacidtransporterwasimplicatedtobeinvolvedinthisprocess.However,thepotentialroleofγ-aminobutyrictransporterintestishasnotbeenexplored.Inthisstudy,weinvestigatedtheexistenceofmouseγ-aminobutyricacidtransportersubtypeI(mGAT1)intestis.Wild-typeandtransgenicmice,whichoverexpressingmGAT1inavarietyoftissues,especiallyintestis,wereprimarilystudiedtoapproachtheprofileofmGAT1intestis.MicewithoverexpressedmGAT1developnormallybutwithreducedmassandsizeoftestisascomparedwithwild-type.Testicularmorphologyoftransgenicmiceexhibitedovertabnormalitiesincludingfocaldamageofthespermatogenicepitheliumaccompaniedbycapillariesproliferationandincreaseddiameterofseminiferoustubuleslumen.Reducednumberofspermatidswasalsofoundinsomeseminiferoustubules.OurresultsclearlydemonstratethepresenceofGAT1inmousetestisandimplythatGAT1ispossiblyinvolvedintesticularfunction.

  • 标签: 睾丸形态 GAT1 过表达 GABA γ-氨基丁酸转运蛋白
  • 简介:Amurinemacrophage-likecellline,J774,acquried,inresponsetoLPS,anabilitytokilltumornecrosisfactor(TNF)-insensitivetargetP815mastocytomacells,whereasanothercellline,P388D1,didnot.LPS-triggeredsignalingmechanismsbetweenthetwocelllineswerecomparedwithanaimtoinquireaboutthepossiblenatureoftheabove-mentioneddifference.TheresultsshowedthattwocelllinesrespondtoLPS-treatmentbyparallelactivationofbothphospholipasesCandA2(PLCandPLA2)toapproximatelythesameextent.ThemaximumresponseofbothenzymesofJ774cellswasnotedwithin10minofthetreatment,whereasthatofP388D1cellsrequiredmorethan20min.TheotherpropertiesofLPS-responsiveenzymesstudiedweresimilarbetweentwocelllines,ineludingActivationofPLCandPLA2andPKCinmacrophagesbyLPSCa2+augmentationofenzymeactivation,participationofguaninenucleotidebinding(G)proteinsintheinitialactivationprocesses,andinhibitionofenzymeactivationbythepriortreatmentofcellswithcholeraorpartussistoxinsetc.Moreover,LPS-triggeredactivationofPLCandPLA2wasfoundtobefollowedbytheincreaseofPKCactivitiesinbothcelllines.Inspiteofthesesimilarities,J774cellspossessedbothbasicandacidicformsofPKCactivities,whileP388D1cellsownedonlyPKCofbasicform.Nevertheless,thequestionwhyJ774cells,butnotP388D1cells,canacquirethetumoricidalactiyity,aganistP815cellsfollowingLPS-treatmentremainstobeanswered.

  • 标签: MURINE macrophagss LPS-induced activation PLO PLA2
  • 简介:免疫不全病毒类型1(HIV-1)Vpr导致房间死亡哺乳动物并且分裂酵母房间,建议那Vpr可以影响一个保存细胞过程。然而,导致Vpr酵母房间死亡是否哺乳动物房间模仿调停Vprapoptosis,是不清楚。我们最近识别了很多Vprsuppressors不仅在分裂酵母压制导致Vpr房间死亡,而且哺乳动物房间堵住导致Vprapoptosis。这些调查结果建议酵母导致Vpr房间死亡可以类似于一些哺乳动物房间apoptotic过程。这研究目标是apoptosis未来研究开发并且验证一个分裂酵母模型系统。类似于哺乳动物房间导致Vprapoptosis,我们这里证明分裂酵母Vpr支持phosphatidylserine外表表现并且导致线粒体hyperpolarization,导致mitochondrial膜潜力变化。而且,反应氧种类(ROS)Vpr扳机生产,显示象apoptotic一样细胞死亡可能被ROS调停。有趣地,Vpr可以为分裂酵母测量象apoptotic一样过程提供一个简单标记线粒体导致唯一词法变化。验证这可能性,我们测试了二Vprsuppressors(EF2和Hsp16)除了最新识别的Vprsuppressor(Skp1)哺乳动物房间压制导致Vprapoptosis。所有三蛋白质废除了房间死亡由Vpr调停了并且酵母房间恢复了正常mitochondrial形态学。结论,分裂酵母导致Vpr房间死亡类似于哺乳动物apoptotic过程。分裂酵母可以潜在地因此为Vpr和另外proapoptotic代理人导致象apoptotic一样过程未来学习被用作一个简单模型有机体。

  • 标签: HIV-1 VPR 细胞死亡 线粒体 模型有机体
  • 简介:ASK1(ARABIDOPSIS象SKP1一样)蛋白质是招募ubiquitinligase建筑群指向SCF(Skp1-Cullin-F盒子蛋白质)一个批评部件为由26Sproteosome降级蛋白质。为了调查蛋白质,那被调停ASK1解朊作用小径Arabidopsis花影响,我们用二维电气泳动(2-DE)比较了Arabidopsis野类型和ask1异种花芽proteomes。有野类型花相比ask1异种花更高或更低丰富十个蛋白质点被切除并且使分析遭到了进一步集体spectrometry(MS)。结果证明他们是涉及相片形态发生,生理节奏摆动,翻译以后过程,压力反应和房间扩大或延伸蛋白质,建议那些过程ask1异种被影响。基因也是的这些抄本层次基于Affymetrix基因芯片比较了微数组数据。没有重要差别为大多数基因被观察,建议有ask1异种累积提高层次蛋白质能是一条调停ASK1解朊作用小径调整候选人目标。阐明这些结果帮助Arabidopsis发展过程并且也ASK1多种功能表明关于基因功能学习蛋白质层次重要性和必要性。

  • 标签: 蛋白质 水解途径 电位 生物研究
  • 简介:Activehost-pathogeninteractionstakeplaceduringinfectionofhumanimmunodeficiencyvirustype1(HIV-1).Outcomesoftheseinteractionsdeterminetheefficiencyofviralinfectionandsubsequentdiseaseprogression.HIV-infectedcellsrespondtoviralinvasionwithvariousdefensivestrategiessuchasinnate,cellularandhumoralimmuneantiviralmechanisms.Ontheotherhand,thevirushasalsodevelopedvariousoffensivetacticstosuppressthesehostcellularresponses.Amongmanyoftheviraloffensivestrategies,HIV-1viralauxiliaryproteins(Tat,Rev,Nef,Vif,VprandVpu)playimportantrolesinthehost-pathogeninteractionandthushavesignificantimpactsontheoutcomeofHIVinfection.OneofthebestexamplesistheinteractionofVifwithahostcytidinedeaminaseAPOBEC3G.AlthoughspecificrolesofotherauxiliaryproteinsarenotaswelldescribedasVif-APOBEC3Ginteraction,itisthegoalofthisbriefreviewtosummarizesomeofthepreliminaryfindingswiththehopetostimulatefurtherdiscussionandinvestigationinthisexhilaratingareaofresearch.

  • 标签: 爱滋病病毒-1 辅助蛋白 病毒感染 中国 病原体
  • 简介:真核细胞房间最惹人注目的形态特征是各种各样围住膜分隔空间存在。包括细胞器和短暂运输中介,这些分隔空间不是静态。更确切地说,蛋白质和膜动态交换被需要维持细胞动态平衡。膜动员最戏剧例子之一macroautophagy过程期间被看见。Macroautophagy是长寿蛋白质和细胞器降级主要细胞小径。响应环境暗示,例如饥饿或应力另外类型,房间生产唯一膜结构,phagophore.Thephagophore扣押它形成一个双膜cytosolic泡细胞质,anautophagosome。结束之后,autophagosome溶酶体熔化或在酵母一个液泡,它交付水疗院放射激光与它货物,和产生大分子一起毁坏内部autophagosome膜回来被释放进cytosol因为reuse.Autophagy因此是正在骑车过程,允许房间熬过滋养限制时期;然而,它有一个更宽生理角色,参予开发和老化,并且另外在对病原体侵略,癌症和某些neurodegenerative保护疾病。许多情况,autophagy角色通过autophagy相关蛋白质研究被识别,Atg6/Beclin1。这蛋白质是类脂化合物kinase建筑群部分,并且最近研究建议它在协调autophagy并且反对apoptosis细胞死亡过程thecytoprotective功能起一个中央作用。这里,我们总结我们Atg6/Beclin的当前知识1在在细胞不同模型有机体和它唯一功能。

  • 标签: 溶酶体 磷酸肌醇 蛋白质 液泡 酵母
  • 简介:干扰素规章因素(IRF)3病毒或细菌侵略期间chemokines和cytokinestranscriptional正式就职是批评。kinases坦克有约束力kinase(TBK)1并且IkappaBkinase(IKK)蔚罐头phosphorylateIRF3和玩C终端部分在IRF3激活重要角色。在这研究,我们显示出那另外一个kinase,c-Jun-NH2-terminalkinase(JNK),它N终端丝氨酸上phosphorylatesIRF3173残余,和TAK1能经由JNK刺激IRF3phosphorylation。没有影响C终端phosphorylation,JNK特定禁止者SP600125禁止N终端phosphorylation。另外,lipopolysaccharide(LPS)上调停IRF3基因表情或polyinosinic-cytidylic酸(polyI:C)处理被SP600125严重地损害,以及IRF3激活记者基因试金。进一步证实TAK1击倒这些观察。有趣地,组成活跃IRF3(5D)能被SP600125禁止;JNK1罐头synergizeIRF3(5D)行动,然而并非S173A-IRF3(5D)变异。更重要地,polyI:没能戏剧性地导致变异S173A和SP600125phosphorylationC废除了被polyI刺激IRF3phosphorylation和dimerization:C。因此,这研究证明TAK1-JNK串联IRF3功能被要求,除了TBK1/IKK蔚,揭开激活mitogen蛋白质(地图)新机制调整天生免疫kinase。

  • 标签: 蛋白激酶 免疫反应 级联 天然 磷酸化 丝裂原活化
  • 简介:Inmacrophages,theaccumulationofcholesterylesterssynthesizedbytheactivatedacyl-coenzymeA:cholesterolacyltransferase-1(ACAT1)resultsinthefoamcellformation,ahallmarkofearlyatheroscleroticlesions.Inthisstudy,withthetreatmentofaglucocorticoidhormonedexamethasone(Dex),lipidstainingresultsclearlyshowedthelargeaccumulationoflipiddropletscontainingcholesterylestersinTHP-1-derivedmacrophagesexposedtolowerconcentrationoftheoxidizedlow-densitylipoprotein(ox-LDL).Morenotably,whentreatedtogetherwithspecificanti-ACATinhibitors,theabundantcholesterylesteraccumulationwasmarkedlydiminishedinTHP-l-derivedmacrophages,confirmingthatACATisthekeyenzymeresponsibleforintracellularcholesterylestersynthesis.RT-PCRandWesternblotresultsindicatedthatDexcausedup-regulationofhumanACAT1expressionatboththemRNAandproteinlevelsinTHP-1andTHP-1-derivedmacrophages.TheluciferaseactivityassaydemonstratedthatDexcouldenhancetheactivityofhumanACAT1geneP1promoter,amajorfactorleadingtotheACAT1activation,inacell-specificmanner.Furtherexperimentalevidencesshowedthataglucocorticoidresponseelement(GRE)locatedwithinhumanACAT1geneP1promotertoresponsetotheelevationofhumanACAT1geneexpressionbyDexcouldbefunctionallyboundwithglucocorticoidreceptor(GR)proteins.ThesedatasupportedthehypothesisthattheclinicaltreatmentwithDex,whichincreasedtheincidenceofatherosclerosis,mayinpartduetoenhancingtheACAT1expressiontopromotetheaccumulationofcholesterylestersduringthemacrophage-derivedfoamcellformation,anearlystageofatherosclerosis.

  • 标签: 巨噬细胞 地塞米松 泡沫细胞 人类 基因 表达
  • 简介:高血压(PHT)gastropathy是肝肝硬化经常复杂并发症,之一从肝硬化死亡引起。Apoptosis广泛地被认为从坏死房间死亡是房间死亡和一个不同实体一个活跃精力依赖者模式。胃mucosalapoptosis是否涉及PHTgastropathy,是不清楚。通过cyclooxygenase(艇长)生产前列腺素(PG)被认为从损害和apoptosis胃肠mucosa保护起一个关键作用。然而,PHTgastropathy艇长角色仍然不清楚地被理解。这研究目的是调查(1)胃mucosalapoptosis是否涉及PHTgastropathy,(2)艇长downregulation贡献这apoptosis。在这研究,当mucosal增长在PHT老鼠被禁止时,我们证明胃mucosalapoptosis显著地被增加。胃mucosalCOX-1显著地mRNA和蛋白质层次被压制,并且PGE2PHT老鼠被减少。进一步,PGE2处理PHT老鼠压制了胃mucosalapoptosis。然而,胃mucosalCOX-2没在假冒操作老鼠和PHT老鼠之间不同。肿瘤坏死因素mucosal层次--(TNF-)并且船边交货ligand,然而并非TNF相关导致apoptosisligand,被增加,并且激活caspase-8和caspase-3层PHT老鼠upregulated。cytosol从线粒体细胞色素c版本没在PHT老鼠被观察。我们数据显示COX-1downregulation经由死亡涉及胃mucosalapoptosis调停信号类型--我PHT老鼠房间死亡。

  • 标签: 细胞凋亡 胃粘膜 环氧 信号 死亡 大鼠
  • 简介:WereportedinthismanuscriptthatTGF-β1inducesapoptosisinAML12murinehepatocytes,whichisassociatedwiththeactivationofp38MAPKsignalingpathway.SB202190,aspecificinhibitorofp38MAPK,stronglyinhibitedtheTGF-β1-inducedapoptosisandPAI-1promoteractivity.TreatmentofcellswithTGF-β1activatesp38.Furthermore,over-expressionofdominantnegativemutantp38alsoreducedtheTGF-β1-inducedapoptosis.Thedataindicatethattheactivationofp38isinvolvedinTGF-β1-mediatedgeneexpressionandapoptosis.

  • 标签: 转化生长因子Β 细胞凋亡 P38 肝细胞 信号传导