简介:由中华医学会骨科学分会、中华医学会骨科学分会骨肿瘤学组主办,天津医院、天津医科大学肿瘤医院联合承办的“中华医学会第15届全国骨肿瘤学术会议”将于2014年5月16。18日在天津召开。本次学术大会将邀请国内外知名专家做专题报告,同时对骨与软组织肿瘤领域共同关注的热点及难点问题进行广泛深入探讨;展示本领域的新进展、新成果。届时,骨与软组织肿瘤领域专家共聚津门,兼顾前瞻与普及、基础与临床、推广指南与共识,为广大从事及热爱骨与软组织肿瘤专业的人员搭建一个良好的学术交流平台。与会者可获得国家级I类继续医学教育项目学分6分。
简介:目的总结15例第Ⅷ肝段切除术的临床经验.方法使用彭氏多功能手术解剖器(PMOD),采取选择性肝血流阻断,对15例第Ⅷ段肝癌进行肝段或联合肝段切除.结果15例手术均顺利完成,无一例手术死亡.其中13例行第Ⅷ肝段切除,2例行联合第Ⅶ、第Ⅷ肝段切除.术中肝血流阻断1-2次,时间12~25min,平均(17.3±5.2)min,切肝时间(阻断肝血流至肝脏肿块切除时间)10-23min,平均(18.3±4.7)min.出血量约(50-700)ml,平均(186±78)ml,2例患者需输血.术后有2例合并胸腔积液,1例胆漏并发膈下感染.结论使用PMOD在选择性肝血流阻断下,安全快捷地行第Ⅷ肝段的切除是完全可行的.
简介:Prostatecancergene3(PCA3,alsoknownasDD3)isanewbiomarkerthatcouldimprovetheaccuracyofprostatecancerdiagnosis.Itisagreatbiomarkerwithfairlyhighspecificityandsensitivity.Theincidenceofprostatecancerisrisingsteadilyinmostcountries.Thecommonlyusedprostate-specificantigen(PSA)testoncegavepeoplehopeforearlydiagnosisofprostatecancer.However,thelowspecificityofthePSAtesthasresultedinalargenumberofunnecessarybiopsiesandovertreatment.Duringthepastdecade,manynewprostatecancerbiomarkershavebeenfound.Amongthese,PCA3isthemostpromising.Duetoitsgreatperformanceindistinguishingprostatecancerfromotherprostateconditions,PCA3couldlikelybeappliedforearlydiagnosisofprostatecancer,patientfollow-up,prognosisprediction,andtargetedtherapy.Afteryearsofresearch,wehaveobtainedsomeknowledgeaboutthesequenceofPCA3gene.WehavealsodeterminedtherelationshipbetweenPCA3andtheproliferationofprostatecancercellsandlearnedsomeinformationabouthowPCA3affectstumor-relatedgenesandproteins.APCA3scorehasbeencreated,andithasbeenusedinavarietyofstudies.SomeresearchershaveevenappliedPCA3totargetedtherapyandobtainedagoodeffectinvitro.Thisreviewdescribesthecurrentstateofresearch,andexploresthefutureprospectsforPCA3.更多还原
简介:Forelectronicmicroscopicobservation,wefoundSSV-transformedNIH3T3cellsweredifferentfromnon-transformedcells.InSSV-transformedNIH3T3cellsnucleicytoplasmaratiowasincreasedandincytoplasmatheribosomes(polyribosomeswereattachedtotheswollenroughendoplasmicreticulum.Itwaslikelythatribosomeswerelinedtogetherfunctionallyandstructionallytoproducespecificprotein(PDGF-likeprotein).
简介:Objective:ToexploretheeffectsofnuclearM-CSFontheprocessoftumorigenesis.Methods:FunctionalpartofM-CSFcDNAwasinsertedintoaneukaryoticexpressionplasmidpCMV/myc/nuc,whichcanaddthreeNLStotheC-terminaloftheexpressedproteinanddirecttheproteinintothecellnuclei.TheconstructedplasmidwastransferredintoNIH3T3cellsandthecellcloneswereselectedbyG-418selection.CellclonesstableexpressingtargetproteinwereidentifiedbyRT-PCR,ABCimmunohistochemistryassayandWesternblot.Cellgrowthkineticsanalysesthroughgrowthcurves,celldoublingtime,MTTtestandanti-senseoligodeoxynucleotide(ASODN)inhibitingcellgrowthtestwereperformedtoidentifycellsproliferationpotential.Results:Thetransfectedcellsshowedelevatedproliferationpotentialoverthecontrolcells.Conclusion:AbnormalappearanceofM-CSFinnucleuscouldenhancecellproliferation,whichsuggeststhatcytokineisoformswithincellnucleusmightplaytranscriptionfactor-likerole.
简介:目的:探讨14—3—3β基因(酪氨酸3-加单氧矽色氨酸5-加单氧酶激活蛋白基因)对卡波氏肉瘤(Kaposigsarcoma,KS)细胞迁移的影响。方法:采用脂质体法将14—3—3β基因稳定转染入BCBL—1(HHV-8positiveandEBVnegativehumanBcells)细胞,Western—Blot检测14—3—3β蛋白的表达,最后利用Transwell法分析14—3—3β基因对BCBL-1细胞迁移的影响(设立空载体组和阴性对照组)。结果:pcDNA3.1/myc—His(-)A-14—3—3β组细胞迁移数目明显高于pcDNA3.1/myc—His(-)A组和阴性对照组,差异具有统计学意义(P〈0.05);pcDNA3.1/myc—His(-)A组和阴性对照组细胞迁移数目相比差异无统计学意义(P〉0.05)。结论:14—3—3β基因能促进KS细胞的迁移。
简介:TheeffectofTPA,apotenttumorpromoter,onSSV-NIH3T3cellsinserum-freemediumwasinvestigated.TPAstimulatedDNAsynthesisofSSV-NIH3T3cellsonthethirddayofcultureinSFM.InSDS-PAGFofmediumconditionedbyTPA-treatedSSV-NIH3T3cells(inSFM+TPA),theamountsoffourproteinsof31.0Kd,28.5Kd,25.5Kdand13.5Kdstrikinglyincreasedoverthatofnon-TPA-treatedcounterpart(inSFM).ThePDGF-likeactivitywasalsodetectedinCMofSFM+TPA.WheninsulinandEGFweredrownofftheSFM+TPA(SFM-Ins-EGF+TPA),TPAlostitsabilitytostimulateDNAsynthesisofSSV-NIH3T3cellsonthethirddayandSDS-PAGEoftheconditionedmediumshowedthattheamountsofthefourproteinsnotedabovegratelyreduced.However,cellsinSFM-Ins-EGF+TPAwereinalmostthesamegrowthconditionascellsincompleteSFM+TPAonthethirddayofculture.Resultswerediscussedinthepaper.
简介:目的人胃癌组织中caspase-3表达的研究。探讨caspase-3表达-9胃癌预后的关系。方法应用免疫组织化学ABC法检测人胃癌组织中caspase-3的表达情况。结果周围正常胃粘膜上皮caspase-3阳性率为94/99(94.9%),胃癌组织中caspase-3的阳性率为62/99(63.5%),较周围正常胃粘膜上皮明显降低(P〈0.05)。caspase-3的表达与胃癌的预后指标(如组织学类型,TNM分期等)明显相关性。结论人胃癌组织中caspase-3的表达较低。这一结果提示caspase-3低表达导致的细胞凋亡异常降低及增生过度可能是胃癌的发病原因之一。这一结果亦提示caspase-3与胃正常粘膜及肿瘤细胞的凋亡有关。Caspase-3可能是胃癌的预后指标之一。
简介:目的:比较卵巢癌SK-OV-3细胞在2D和3D培养系统中的生长特性。方法将卵巢癌细胞株SK-OV-3分别采用2D和3D培养系统进行培养,观察细胞生长形态。采用CCK-8法测定细胞生长,Brdu法检测细胞增殖,流式细胞术检测细胞周期分布。结果SK-OV-3细胞在2D培养系统中呈单层贴壁生长;在3D培养系统中形成多细胞球样体(muti-cellularspheroid,MCS),生长速度较2D培养系统慢。在2D培养系统中SK-OV-3细胞的S/G2-M期细胞比例为(53.7±5.8)%,明显高于在3D培养系统中S/G2-M期细胞比例[(40.9±2.0)%,P<0.05]。结论不同的培养方式对卵巢癌细胞的生长具有较大的影响。MCS三维培养系统能更好地模拟体内肿瘤细胞的生长状况,是卵巢癌研究的良好平台。
简介:Activationofthephosphoinositide3kinase(PI3K)/Akt/mammaliantargetofrapamycin(mTOR)pathwayiscommoninbreastcancer.Thereispreclinicaldatatosupportinhibitionofthepathway,andphaseⅠtoⅢtrialsinvolvinginhibitorsofthepathwayhavebeenorarebeingconductedinsolidtumorsandbreastcancer.Everolimus,anmTORinhibitor,iscurrentlyapprovedforthetreatmentofhormonereceptor(HR)-positive,humanepidermalgrowthfactorreceptor2(HER2)-negativebreastcancer.Inthisreview,wesummarisetheefficacyandtoxicityfindingsfromtherandomisedclinicaltrials,withsimplifiedguidelinesonthemanagementofpotentialadverseeffects.Educationofhealthcareprofessionalsandpatientsiscriticalforsafetyandcompliance.WhilethereissomeclinicalevidenceofactivityofmTORinhibitioninHR-positiveandHER2-positivebreastcancers,thebenefitsmaybemorepronouncedinselectedsubsetsratherthanintheoverallpopulation.FurtherdevelopmentofpredictivebiomarkerswillbeusefulintheselectionofpatientswhowillbenefitfrominhibitionofthePI3K/Akt/mTOR(PAM)pathway.
简介:目的:克隆COPS3基因cDNA,构建其原核融合蛋白表达载体并表达和鉴定。方法:从培养的人骨肉瘤细胞系SOSP-9607细胞中提取总RNA,经RT-PCR获得COPS3基因。将该基因克隆到pGEM-T-Easy载体中,酶切及测序鉴定。将COPS3基因插入pET28a融合蛋白表达载体中,IPTG诱导表达,进行SDS-PAGE分析。免疫印迹法鉴定COPS3蛋白的表达。结果:cDNA测序证明,获得了COPS3基因cDNA,其序列与Genebank中报道序列完全一致。酶切分析表明,成功构建了含COPS3基因的pET28a融合蛋白表达载体。SDS-PAGE以及免疫印迹法鉴定分析表明,COPS3蛋白获得高效表达,分子质量为51Ku,表达量约占菌体总蛋白的30%。结论:成功克隆和表达了COPS3cDNA。