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3p杂合性缺失与非小细胞肺癌的相关性 被引量:1

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摘要 目的探讨3号染色体短臂(3p)多个等位基因位点的杂合性缺失(lossofheterozygosity,LOH)与非小细胞肺癌(NSCLC)发生发展之间的相关性。方法采用微切割技术和PCR-SSLP银染结合微卫星重复序列多态性,分析53例NSCLC石蜡切片中肺癌组和对照组中3p25,3p22~p24.3,3p21~p23,3p21.3,3p14.2和3p12多个位点的杂合性缺失(LOH)。结果53例肺癌标本中的LOH检出率分别为57.5%(3p25)、65.4%(3p22~p24.3)、58.3%(3p21~p23)、76.5%(3p21.3)、66.0%(3p14.2)和66.7%(3p12),而对照组的LOH检出率分别为10.2%(3p25)、11.3%(3p22~p24.3)、15.4%(3p21~p23)、32.1%(3p21.3)、0(3p14.2)和1.9%(3p12),肺癌组的缺失率明显高于对照组(P>0.05);鳞癌的LOH频率明显高于腺癌,差别具有统计学意义,分别为3p25(P=0.006)、3p22~p24.3(P=0.004)、3p21~p23(P=0.001)、3p21.3(P=0.000)、3p14.2(P=0.001)和3p12(P=0.000);3pLOH发生率与TNM分期和性别无明显关系(P>0.05)。结论3p等位基因LOH几乎可见于所有的NSCLC组织且常为多个位点缺失,提示在3p中存在多个与肺癌发生发展相关的抑癌基因。
出处 《广东医学》 CAS CSCD 北大核心 2007年第7期1060-1062,共3页 Guangdong Medical Journal
基金 广东省深圳市卫生科技计划攻关项目(编号:200405001 200004057)
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