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1、基质金属蛋白酶-9基因多态性与食管鳞状细胞癌易感性的关联研究傅勇,胡华梅2,谭益3,唐胜军3,熊刚1,杨康1,白云2(第三军医大学:1西南医院胸心外科,2基础医学部遗传学教研室,重庆400038;3重庆市三峡中心医院胸外科,重庆404000)摘要:目的研究基质金属蛋白酶-9(MatrixMetalloproteinsase-9,MMP-9)基因多态性与中国西南地区人群食管鳞状细胞癌(esophagealsquamouscellcarcinoma,ESCC)的关联性。方法应用聚合酶链反应-限制性片段长度多态性(polymerasechainreaction-restricti
2、onfragmentlengthpolymorphisms,PCR-RFLPs)方法检测235例食管鳞状细胞癌病例组及300例健康对照组的MMP-9R279Q基因多态性的分布情况。结果ESCC患病组和健康对照组MMP-9279R、279Q等位基因频率分别为57.7%、42.3%和51.5%、48.5%,二者有显著性差异(χ2=4.08,P=0.04);MMP-9279R/R基因型频率在ESCC病例组(40.5%)中显著高于对照组(29.0%)(χ2=20.08,P=0.01);当按年龄进行分层分析时,与Q/Q基因型相比,R/R基因型能明显增加50岁以下人群ESCC的发病风险
3、(校正OR值为3.39,95%CI为1.23~9.29)。结论携带有MMP-9279R等位基因的人群与ESCC易感性有显著关联性,MMP-9279R/R基因型可增加患ESCC疾病的风险。在中国西南地区人群中MMP-9R279Q基因多态性可能是ESCC发生的危险因素之一。关键词:食管鳞状细胞癌(ESCC);基质金属蛋白酶-9(MMP-9);单核苷酸多态性(SNPs);易感性中图法分类号:R735.1;R394.3文献标识码:AThecorrelationbetweenthepolymorphismofmatrixmetalloproteinase-9andesophageal
4、squamouscellcarcinomapatientsinSouthwestChinaFUYong1,HUHua-mei2,TANYi3,TANGSheng-jun3,XIONGGang1,YANGKang1,BAIYun2(ThirdMilitaryMedicalUniversity:1DepartmentofThoracicandCardiacSurgery,SouthwestHospital,2DepartmentofMedicalGeneticsandBasicMedicine,Chongqing400038,China;3DepartmentofThoraci
5、candCardiacSurgery,ChongqingThreeGorgesCenterHospital,Chongqing404000,China)Abstract:ObjectiveToinvestigatethecorrelationbetweenthesinglenucleotidepolymorphism(SNP)ofMMP-9geneandesophagealsquamouscellcarcinomapatientsinSouthwestChina.MethodsThepolymerasechainreaction-restrictionfragmentlen
6、gthpolymorphisms(PCR-RFLPs)techniquewasappliedtoanalyzetheMMP-9R279Qpolymorphisminnormalgroup(300)andESCCgroup(235).ResultsAmongESCCpatients,frequenciesoftheMMP-9R279Qalleledistributionwere57.7%,42.3%and51.5%,48.5%amonghealthycontrol,respectively,therewassignificantdifference(χ2=4.08,P=0.0
7、4).ThefrequencyoftheR/RgenotypeintheMMP-9genepolymorphismwassignificantlyincreasedinESCCpatients(40.5%)whencomparedwithcontrols(29.0%)(χ2=20.08,P=0.01).Whenstratifiedforages,R/RgenotypesignificantlyincreasedtheriskofESCCinindividualsbelowed50years(adjustedOR=3