简介：AlantolactoneisanaturalcompoundidentifiedfromtherootsofInulaheleniumL.thathasmultiplebio-activities.Weexamineditsinhibitoryeffectsonhumannon-smallcelllungcancer(NSCLC)A549cells.Thean-tiproliferativeeffectofalantolactoneonA549cellswasinvestigatedviaMTT[3′-(4,5dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide]assayanditsapoptosis-inducingeffectwasdeterminedbyHoechststainingandflowcytometry.WefoundthatalantolactonesignificantlyinhibitedtheproliferationofA549cellsandinducedmorphologicalchangestypicalforapoptosis.Flowcytometryanalysisindicatesdose-dependentcellcycleretardationatG0/G1andSstages.Theresultsindicatethatalantolactonecouldbeanattractivesmall-molecularnaturalcompoundforfurtherdevelopmentasatherapeuticdrugagainstNSCLC.

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简介：在氧气体的处理以后，包含胺组的小分子能射出荧光。氧化被相信在荧光中心的形成起一个重要作用。比作以前的结果，小分子和大分子可能有一样的荧光中心。

简介：CunanoclusterswereelectrochemicallydepositedonthefilmofaNafion-solubilizedmulti-wallcarbonnanotubes(CNTs)modifiedglassycarbonelectrode(CNTs-GCE),whichfabricatedaCu-CNTscompositesensor(Cu-CNTs-GCE)todetectglucosewithnon-enzyme.Thelinearrangeis7.0×10-7to3.5×10-3mol/Lwithahighsensitivityof17.76μA/(mmolL),withalowdetectionlimit2.1×10-7mol/L,fastresponsetime(within5s),goodreproducibilityandstability.

简介：Thenanoscalealuminumbowlswerederivedfromtheporousaluminaandwereusedastheflexiblenanoscalereactorsforthepreparationofnanoparticles.Bothsinglesourceprecursorandprepreparednanoparticleswereinducedinthenanobowlsbymeltingtheprecursor/polymerfilmsspin-coatedonaluminumnanobowlsfortheformationofnanostructuralcompositesinthenanobowls.Wehavepreparedasinglenanoparticleorjustasmallnumberofmetal(e.g.Pt)nanoparticlesorsemiconductornanoparticles(e.g.CdSeorCdSe/ZnScore-shellnanostructures)inthenanobowls.

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简介：Itwasfoundthatphosphorylationofsmallpeptidecouldimprovethesensitivityinmassspectrometry.DensityfunctionaltheorycalculationsshowedthattheenergyfortheprotonationofN-(O,O′-dimethyl)phosphorylglycylglycineislowerthanthatofglycylglycine.Thesecouldhelptounderstandingtheexperimentalresults.

简介：开发HIV-1熔化的口头上地可得到的小分子禁止者在许多年吸引了重要兴趣。司丰饶最近报导了试验性地被显示在低micromolar范围禁止房间房间熔化的几合成混合物。我们执行了计算学习帮助由在gp41上停靠这些混合物到恐水病的衣袋上识别可能的有约束力的模式并且描绘有约束力的建筑群的结构。详细gp41分子绑定相互作用和绑定的免费精力通过分子的动力学模拟和MM-PBSA计算被获得。在gp41禁止者建筑群的特定的分子的相互作用被识别。现在的计算学习补充相应试验性的调查并且帮助为小分子的gp41禁止者的进一步的精炼建立一个好起点。

简介：Basedonageneralclassificationandcharacteristiccomparisonoftheexistingmodels,anewmodelfornon-catalyticgas-solidreactionsisproposedandageneralformulationforthemodelintermsofthesolidconversion,X,ispresentedinthispaper.Themodel,referredtothegeneralizedmodel,isdemonstratedtobeapplicabletoanysolidreactantofgeneralstructurerangingfromhighlyporoustononporousmaterials.Itisshownthatthegeneralizedmodelincorporatesthegrainandporestructureforasolidpelletandcanbereducedtothegrainandrandomporemodelsasextremecases.

简介：Theauthorsfocusedtheirattentionontheestablishmentofamesenchymalstemcell(MSC)modelforscreeningtraditionalChinesemedicines(TCMs)soastoinvestigatetheeffectsofShuanglongFormula(SLF)components(Ginsenosidesandsalvianolicacids)andingredients(ginsenosideRb1andsalvianolicacidB)oncardiomyocytedifferentiationfromMSCs.TheSLFcomponentswereanalyzedandquantifiedbyHPLC-TOF-MS.CardiomyocytedifferentiationwasinducedbyculturingMSCsintheinductionmediumsupplementedwithSLFingredients,SLFcomponents,5-azacytidine(5-aza),5-aza+SLFingredientsand5-aza+SLFcomponents,respectively,forupto30d,andevulatedbytheexpressionofCardiac-specificmyosinheavychain(MHC)andtroponinI(TnI)viaimmunofluoresentstaining.Slowgrowthrateandchangedmorphologywereobservedduringcardiomyocytedifferentiation.After20dofinduction,differentiatingMSCswerepositiveforMHCandTnIstaining.TheeffectsofSLFcomponentswerebetterthanthoseofSLFingredients.Takentogether,SLFcaninducethedifferentiationofMSCsintocardiomyogeniccellsinvitro,andMSCscanbeusedasapowerfultoolforscreeningTCMs.

简介：Aseriesof5-aminolevulinicacidanditsalkylestermethanesulfonateswasexploitedtophotodynamictherapy(PDT)ofhumanlymphocyticcells,U-937invitro.ThePDTefficiencyisinfluencedbytheconcentrationandincubationtime.Generally,forALAanditsalkylestermethanesulfonates,thecellsurvivalratedecreasesandtheaccumulationabilityofPpIXincreaseswiththeconcentrationandincubationtime.Wefoundthatthelongercarbonchainmethanesulfonates(C5-S,C6-S,C8-S)exhibitbetterPDTeffectthanALAmethanesulfonate.ThispossiblyprovidesapromisingroutetotheclinicalapplicationofPpIX-mediatedPDTtocancercell.

简介：非否定的矩阵因式分解(NMF)是为由把非否定性限制放在矩阵上的维数减小的一种技术。基于PARAFAC模型，NMF为三尺寸的数据被扩大分解。三尺寸的非否定的矩阵因式分解(NMF3)算法，简明、容易实现，在这篇论文被给。NMF3算法实现基于元素然而并非在向量上。没有展开，传统的算法，这能直接分解一个数据数组，它不类似于。它被用于模仿的数据数组分解并且获得了合理结果。它证明NMF3能在化学统计学为曲线分辨率被介绍。

简介：Twenty10-hydrocarbylacridonesand2-methylacridone,1-hydroxyacridoneweresynthesizedfromacridoneandcharacterizedbymp,IR,UV,1HNMRandMS.UsingNd:YAGasalasersource,thesecond-orderharmonicgeneration(SHG)valuesoftheacridonederivativesweremeasuredinpowderstateascomparedwithureapowder.TheresultsshowedthattheSHGvaluesofsomeof10-hydrocarbylacridoneswerehigherthanthatofurea,whileotherswerelower.Althoughthehydrocarbylsubstituents(R)attachedtonitrogenatomofacridoneweredifferentinsizeandelectronegativity,theyhadalittleeffectontheSHGvaluesof10-hydrocarbylacridones.Substituents,suchasmethylorhydroxygroupconnectedtothephenylring,causedalittleeffectontheSHGvalues,too,comparedwithacridone.TheabilityofRtopushelectrontowardthenitrogenatomortopullelectronfromthenitrogenatomplayanimportantroleonthemaximumwavelengthesofUV-visibleabsorptionofacridonederivatives.

简介：Insituphotochromicprocessinthemonolayerofaphotochromicspiropyranderivativewithoutlongalkylchain,wasinvestigated.Thephotochromismattheair/waterinterfaceunderdiffernetsurfacepressureswasstudiedbysurfacepressure-areaisotherms,surfacepressure-timecurves,area-timecurvesandBrewsteranglemicroscopy.Bothformsofthecompoundwerefoundtoformmonolayersattheair/waterinterfacealthouhgitdoesnothavelongalkylchain.Alargeareaexpansioninthemonolayercorrespondingtoazreo^thorderreactionwasfoundattheinitialstageoftheUVlightirradiation.Aseriesofdynamicinvestigationsrevealedthatathighpressureafterphasetransitioninthemonolayer,thesurfacepressurechangesgreatlyumderalternativeirradiationofUVandvisiblelight.Anobviousmorphologicalchangeaccompanyingwiththephotochromismwasobservedinsitu.

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简介：Thelackofefficientandnon-toxicgenedelivery,preferablywithnon-viralDNAvectors,isgenerallyregardedasamajorlimitationforgenetherapy.Inthisstudy,awheathistoneH4genewasclonedfromTriticumaestivum,sequenced,modifiedandexpressedinE.coli.ThewheathistoneH4geneandreconstructedH4TLgeneencodedwheathistoneH4andarecombinantproteinof141aminoacidswithanapproximatemolecularweightof15500.GelelectrophoresismobilityshiftassaysdemonstratedthatthepurifiedproteinhadhighaffinityforDNA.Mostsignificantly,thecomplexofplasmidpEGFP/C1withH4TLwastransfectedwithincreasedefficiencyintoMCF-7,HO8910,LNCap,A549andHeLacellsinvitro.Theseresultsdemonstratethatthetargetingofnon-viralvectorstotumor-specificreceptorsprovidesacheap,simpleandhighlyefficienttoolforgenedelivery.