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鼻咽癌组织中 EBV-BARF0基因序列的测定
引用本文:宋立兵,曾益新,马英红,刘庆伦,李满枝,李端,汪慧民. 鼻咽癌组织中 EBV-BARF0基因序列的测定[J]. 癌症, 2001, 20(5)
作者姓名:宋立兵  曾益新  马英红  刘庆伦  李满枝  李端  汪慧民
作者单位:中山医科大学肿瘤防治中心肿瘤研究所 ,
摘    要:目的: EB病毒 (Epstein-Barr virus,EBV)存在的变异影响到其生物学功能(如 LMP1基因)。 BamHI A区右向框 0( BamHI A rightward fram0, BARF0)是在鼻咽癌 (Nasopharyngeal Carcinoma,NPC)病人中检出率很高的一个 EB病毒基因,对其变异性的研究尚未见报道,本研究是为了明确广东鼻咽癌组织中 EBV-BARF0基因的序列及其变异。方法:应用 PCR技术从 20例鼻咽癌组织中,扩增 EBV基因 BARF0,并对它们的序列进行测定。结果:与标准株 B95-8相比,鼻咽癌组织中 EBV-BARF0均有 4个位点发生突变: 160473( G→ T)、 160545( C→ T)、 160701( C→ A)、 160707( G→ C),并导致相应的氨基酸的改变: 2( Ala→ Ser)、 26( Leu→ Phe)、 78( Arg→ Ser)、 80( Ala→ Pro)。结论:由于 EBV的 BARF0基因在鼻咽癌细胞株及活检组织中 100%表达,在淋巴瘤组织及淋巴瘤细胞株中表达较低或不表达,本研究首次报道鼻咽癌组织中 EBV-BARF0的序列分析,与 B95-8相比存在变异,并导致了蛋白质的一级结构的改变,推测该基因很可能在鼻咽癌变过程中起着重要的作用。

关 键 词:鼻咽癌细胞株  EB病毒  BARF0  序列测定

Sequence Analysis of EBV-BARF0 Gene in Nasopharyngeal Carcinoma from Guangdong Area
SONG Li-bing,ZENG Yi-xin,MA Ying-hong,LIU Qing-lun,LI Man-zhi,LI Duan,WANG Hui-min. Sequence Analysis of EBV-BARF0 Gene in Nasopharyngeal Carcinoma from Guangdong Area[J]. Chinese journal of cancer, 2001, 20(5)
Authors:SONG Li-bing  ZENG Yi-xin  MA Ying-hong  LIU Qing-lun  LI Man-zhi  LI Duan  WANG Hui-min
Abstract:Objective: There were variations of EBV genome from different areas and they may affect the biologic function of EBV (such as LMP1). EBV-BARF0 was highly detected in the patients with nasopharyngeal carcinoma(NPC) and it s variations have not been reported. This study was designed to determine the sequence and variation of EBV-BARF0 gene in the patieats with NPC from Guangdong area. Methods: PCR was used to amplify the EBV-BARF0 gene in 20 patients with NPC and the productions were sequenced on the ABI377. Results: Comparing with standard B95-8, there were four loci with variances including: 160473 ( G→ T) , 160545 ( C→ T) , 160701 ( C→ A) , 160707 ( G→ C) of sequences and 2 ( Ala→ Ser) , 26 ( Leu→ Phe) , 78 ( Arg→ Ser) , 80 ( Ala→ Pro) of amino acid in 20 patients with NPC. Conclusion: Since the BARF0 gene of EBV is expressed in all nasopharyngeal carcinoma cell line and biopsies, but it is not expressed or less frequenly in lymphoma tissues and cell lines,the authors firstly reported the variation of EBV-BARF0 which compared with B95-8 in the patieats with NPC from Guangdong area. These suggest that the gene may play an important role in the carcinogenesis and development of nasopharyngeal carcinoma.
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