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  • Title: [Analysis of splicing variants in NASG 3'UTR, down-regulated in nasopharyngeal carcinoma, and its expression in multiple cancer tissues].
    Author: Zhang BC, Zhu SG, Xiang JJ, Zhou M, Nie XM, Xiao BY, Li XL, Li GY.
    Journal: Ai Zheng; 2003 May; 22(5):477-80. PubMed ID: 12753706.
    Abstract:
    BACKGROUND & OBJECTIVE: NASG gene, a tissue-specific gene of human nasopharyngeal epithelium was isolated by suppression subtractive hybridization. This study was designed to analyze splicing variants in NASG 3'untranslated region (UTR) and its expression profiling in multiple cancer tissues. METHODS: The PCR primers were designed in NASG 3'UTR around the splicing variants and reverse transcription-polymerase chain reaction (RT-PCR) was performed. The PCR products were separated and sequenced. The expression patterns of NASG were detected by RT-PCR among nasopharyngeal carcinoma (NPC) cell line HNE1, primary human embryo nasopharyngeal epithelial cells, NPC biopsies, and normal adult nasopharyngeal epithelial tissues. Its expression profiling in multiple cancer tissues were tested by cancer profiling array hybridization. RESULTS: There were three splicing variants in NASG 3'UTR. NASG was identified to be down-regulated in NPC cell line HNE1 and 71% of the NPC biopsies, but up-regulated in 25% lung of the cancer biopsies, and not express in other cancer tissues and normal tissues. CONCLUSION: There were three splicing variants in NASG 3'UTR. Its abnormal expression may be an important molecular event in NPC and lung cancer.
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