河南食管/贲门癌高发区人群食管癌和贲门癌比较基因组杂交分析

目的探讨食管癌/贲门癌高发区人群食管癌和贲门癌染色体基因组变化特征。方法应用比较基因组杂交技术分析37例原发性食管癌和30例贲门癌患者染色体基因组的变化。结果比较基因组杂交发现,食管癌组织染色体8q发生DNA扩增的频率最高(78%),其它依次为3q、5p、6q和7p;3p发生DNA丢失的频率最高(57%),其它依次为8p、9q和11q。贲门癌组织染色体20q发生DNA扩增频率最高(43%),其它依次为6q、8q和6p;17p发生DNA丢失的频率最高(57%),其它依次为19p、1p和4p。结论8q、3q和5pDNA扩增和3p、8p和9qDNA丢失是河南高发区食管癌患者基因组DNA变化特征;而20q、6qDNA扩增和17p、19p、1pDNA丢失可能是河南高发区贲门癌患者基因组DNA变化特征。这些结果为进一步定位筛选和克隆与食管癌/贲门癌相关基因提供了重要的理论信息。

Comparative genomic hybridization of esophageal squamous cell carcinoma and gastric cardia adenocarcinoma in high-incidence region of esophageal carcinoma, Linzhou Henan

Objective To characterize the profiles of chromosome imbalance in esophagaeal squamous cell carcinoma (SCC) and gastric cardia adenocarcinoma (GCA) from the high incidence area in Henan. Methods Chromosomal aberrations of 37 samples of SCC and 30 GCA were analyzed by comparative genomic hybridization comparative genomic hybridization (CGH). Results It was found that the most frequently detected gains were on chromosome arm 8q (78%), and followed by 3q, 5p, 6q and 7p. The most frequent loss was found on 3p (57%), and followed by 8p, 9q and 11q in SCC. For GCA, the most frequent gain was found on chromosome arm 20q (43%), and followed by 6q, 8q and 6p. The most frequent loss was on the chromosome 17p (57%), and followed by 19p, 1p and 4p. Conclusion The present findings demonstrate that gains of 8q, 3q and 5p, and losses of 3p, 8p, and 9q are characteristic profile of chromosome imbalance in SCC, and the gains of 20q, 6q and losses of 17p, 19p and 1p are characteristic profile of chromosome imbalance in GCA, which provide important theoretic information for identifying and cloning novel SCC/GCA related genes.