Abstract
Objective To evaluate the dual-color interphase fluorescence in situ hybridization (FISH) of human telomerase gene (hTERC) in the esophageal cancer and preneoplastic lesions. Methods The fluorescence signals of hTERC in the esophageal cancer and preneoplastic lesions were detected by using interphase FISH. According to histology, biopsy and pathology certification, the samples include 45 cases of esophageal normal tissue, 27 cases of atypical hyperplasia Ⅰ , 22 cases of atypical hyperplasia Ⅱ / Ⅲ and 55 cases of squamous cell carcinomas (SCC) of the esophagus. Results None normal samples revealed copy number increases of 3q, while 25.9% of atypical hyperplasia Ⅰ , 54. 5% of atypical hyperplasia Ⅱ/Ⅲ, 90. 9% of the squamous esophageal cancer showed extra copies of 3q. The comparison between groups showed statistically significant difference ( P ＜ 0. 05 ). The mean copy number was 2. 19 ±0. 11,2. 35 ± 0. 30, 2. 64 ± 0. 27 respectively. The positive amplification of the hTERC gene was not correlated with histological stages, lymph nodes metastasis and the grades of carcinoma differentiation in SCC (P ＞ 0. 05 ). Conclusion The presence of hTERC gene may play an important role in the development of SCC. Key words: Fluorescence in situ hybridization; hTERC; Esophageal cancer
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