简介：Hepatocellularcarcinoma(HCC)isoneofthemostdeadlyhumancancers,butitisverydifficulttoestablishananimalmodelbyusingsurgicalspecimens.Inthepresentexperiment,histologicallyintactfreshsurgicalspecimensofHCCweresubcutaneouslytransplantedinnon-obesediabetic/severecombinedimmunodeficienccy(NOD/SCID)mice.Thebiologicalcharacteristicsoftheoriginalandthecorrespondingtransplantedtumorsandcelllineswereinvestigated.Theresultsshowedthat5newanimalmodelsand2primarycelllinesweresuccessfullyestablishedfromsurgicalspecimens.Hematoxylin-eosinstainingshowedthatxenograftsretainedmajorhistologicalfeaturesoftheoriginalsurgicalspecimens.Thetwonewcelllineshadbeencultivatedfor3yearsandsuccessivelypassagedformorethan100passagesinvitro.Themorphologicalcharacteristicsandbiologicfeaturesofthetwocelllinesweregeneticallysimilartotheoriginaltumor.Thesubcutaneoustransplantanimalmodelswithhistologicallyintacttumortissueandprimarycelllinescouldbeusefulforinvivoandinvitrotestingofanti-cancerdrugsandbeidealmodelstostudyvariousbiologicfeaturesofHCC.

简介：目的探讨DNA修复基因RAD523＇非翻译区（3＇-untranslatedregion,3＇-UTR）miRNA靶序列单核苷酸多态性（singlenucleotidepolymorphism,SNP）与广西地区人群肝细胞癌（hepatocellularcarcinoma,HCC）遗传易感性的关系。方法采用病例-对照研究,对1002例确诊的HCC新发病例和1013例非肿瘤患者RAD52基因3＇-UTR区域miRNA靶序列SNPs（rs1051669、rs1051672、rs7301931和rs7310449）进行基因分型,并分析其基因型频率分布及其与HCC遗传易感性的关系。结果RAD52基因各SNP基因型在病例组和对照组中的分布频率差异均无统计学意义（P〉0.05）。调整年龄、性别、吸烟、饮酒和HBV感染等因素后,未发现各SNP与HCC易感性有关联;分层分析发现,在女性人群中,与携带rs1051669C等位基因相比,TT基因型可显著降低个体罹患HCC的风险（TTvsCT/CC：OR=0.03,95%CI：0.00～0.62,P=0.03）;与携带rs1051672G等位基因相比,AA基因型可显著降低个体罹患HCC的风险（AAvsGA/GG：OR=0.03,95%CI：0.01～0.88,P=0.04）。结论RAD52基因3＇-UTR区域miRNA靶序列SNPsrs1051669、rs1051672位点可能与广西地区女性人群HCC易感性有关。