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华西医学  2010 

宫颈脱落细胞hTERC基因的表达及临床意义

, PP. 1313-1316

Keywords: 人类染色体端粒酶基因,荧光原位杂交,宫颈癌,宫颈上皮内瘤变,宫颈炎

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Abstract:

【】目的探讨宫颈上皮内瘤变(CIN)和宫颈鳞癌(SCC)组织中人类染色体端粒酶基因(hTERC)的表达和临床意义。方法收集2007年10月-2009年6月经病理学证实的116例宫颈脱落细胞标本,其中LSIL(CINⅠ)30例、HSIL(CINⅡ/Ⅲ)37例、SCC16例、宫颈炎33例,用荧光原位杂交(FISH)方法检测脱落细胞hTERC基因。结果在宫颈炎、LSIL、HSIL和SCC组中hTERC基因的表达率分别是6.1%、16.7%、51.4%和93.8%,其中,HSIL、SCC组与宫颈炎组比较,hTERC基因阳性率差异有统计学意义(P<0.05),LSIL组与HSIL组比较、LSIL组与SCC组比较、HSIL组与SCC组比较,差异有统计学意义(P<0.05),且随着病变程度增加,hTERC基因表达率增加。结论hTERC基因在细胞学LSIL、HSIL和SCC中表达异常,且随病变程度增加阳性表达率也增加,可作为宫颈癌癌前病变进展的生物遗传学监测指标,并有望成为宫颈癌早期筛查方法之一。【Abstract】ObjectiveToexploretheclinicalsignificanceandexpressionofthehumantelomerasegene(hTERC)inthecervicalintraepithelialneoplasia(CIN)andsquamouscarcinomaofthecervix(SCC).MethodsAccordingtohistologicalbiopsyfromOctober2007toJune2009,116papsmearsweredividedintoLSIL(n=30),HSIL(n=37),SCC(n=16),andcervicitis(n=33)groups.Fluorescenceinsituhybridization(FISH)wasusedtodetecttheexpressionofhTERC.ResultsPositiveexpressionrateofhTERCwas6.1%incervicitisgroup,16.7%inLSILgroup,51.4%inHSILgroup,and93.8%inSCCgroup,respectively.Comparedtocervicitisgroup,theexpressionofhTERCinHSILandSCCgroupswassignificantlyhigher(P<0.05).AmongLSIL,HSIL,andSCCgroups,thereweresignificantdifferencecinhTERCexpressionbetweeneverytwogroups(P<0.05).FromLSILtoSCC,theexpressionofhTERCincreasedobviously.ConclusionAbnormalexpressionofhTERCexistsinLSIL,HSIL,andSCCpatients,whichsignificantlyincreasesduringmalignantdevelopment.Itmaybeabiogeneticsmonitorindexofcervicalprecancerosisandwillbeascreeningmarkerforcervicalcancer.?

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