【摘要】 为探讨一种快速、简便、可靠的胃癌微卫星不稳定性(MSI)检测方法,用变性聚丙烯酰胺凝胶电泳 银染法检测28例胃癌12个微卫星位点(D1S548、D1S552、D5S346、TP53、IGFⅡR(G)8、IGFⅡR(CT)5、TGFβRⅡ(GT)3、TGFβRⅡ(A)10、hMSH3(A)8、hMSH6(G)8、BAX(G)8和Bat26),DHPLC柱温50℃检测Bat26位点。凝胶电泳发现MSI H2例(7 14%),MSI L胃癌15例(53 6%),Bat26+2例均为MSI H,Bat26改变和MSI H表型一致(P<0 01,Fisher’s确切概率法)。DHPLC亦证实2例Bat26+胃癌,结果和凝胶电泳完全一致。结果表明,DHPLC检测Bat26位点是研究胃癌MSI H的较好方法,有一定的临床应用价值。更多还原

【Abstract】 To establish a fast,simple and solid method of studying microsatellite instability （MSI） in gastric cancer,a panel of 12 microsatellite sites,D1S548,D1S552,D5S346,TP53,IGFⅡR（G）₈,IGFⅡR（CT）₅,TGFβRⅡ（GT）₃,TGFβRⅡ（A）₁₀,hMSH3（A）₈,hMSH6（G）₈,BAX（G）₈ and Bat26,were detected by denatured polyacrymide gel electrophoresis-silver stain in 28 gastric cancers.Bat26 was also analyzed by denatured high performance liquid chromatograph （DHPLC） at 50℃ in the DNASep Cartridge.Two MSI-H （7.14%） and 15 MSI-L cancers （53.6%） were identified in 28 gastric cancers.Bat26 was positive only in 2 MSI-H cancers.The alterations of Bat26 and MSI-H status were coincident （P<0.01）.The two Bat26+ cancers were also confirmed by DHPLC.Results obtained from DHPLC and gel electrophoresis were completely consistent.Thus,DHPLC analysis of Bat26 site may be a favorable method of detecting MSI-H status in gastric cancer,and be of clinical importance.更多还原