摘要目的 探讨染色体异常在肺癌发生和发展中的可能作用.方法 采用比较基因组杂交(CGH)技术分析了17例原发性肺癌新鲜组织的染色体异常.结果 17例肺癌组织均检出染色体畸变(扩增和/或缺失),而且每个病例涉及多条染色体畸变.非小细胞肺癌(NSCLC)的染色体扩增和缺失平均发生率(7处/例和4.8处/例)与小细胞肺癌(SCLC)(8.4处/例和9.6处/例)差异无统计学意义,但NSCLC与SCLC的染色体扩增和缺失的发生部位及其频率有所不同,NSCLC染色体3q24- 28和11q13的扩增的频率(58.3％和58.3％)显著高于SCLC(0％和0％)(P＜0.05).结论 NSCLC和SCLC在发生和发展过程中都涉及多部位染色体(多基因)异常,NSCLC与SCLC染色体扩增和缺失的发生部位及其频率有所不同可能是导致两者不同生物学特性的基础.

abstractsObjective To understand the molecular aberration at whole genomic level,CGH (comparative genomic hybridization) was used to investigate genetic abnormality in lung cancer.Methods Comparative genomic hybridization was performed in 17 cases to detect the global genomic aberration in cancer tissue cells.Results All of 17 cases detected by CGH showed chromosomal aberrations.The average numbers of chromosomal gains and losses in each case were 7.0 and 4.8 in NSCLC and 8.4 and 9.6 in SCLC,respectively.The frequency of gains and losses on chromosome had no significant differences between NSCLC and SCLC.The frequencies of gains on chromosomal arms 3q24 -28 and 11q13(58.3％ and 58.3％ ) in NSCLC were significantly higher than that in SCLC(0％ and 0％ ) ( P ＜0.05 and ＜0.05,respectively).Conclusions The cytogenetic aberration generally existed in lung cancer cells.Several regions ( more than one) of chromosomal aberration were involved in the carcinogenesis of NSCLC and SCLC.The regions and frequencies of chromosomal aberration in NSCLC were somewhat different from that in SCLC,which might result in the different biological behavior of the two types of lung cancer.The chromosomal aberration might be served as a marker to differentiate the two types of lung cancer.