The nucleotide polymorphisms within the Epstein–Barr virus C and Q promoters from nasopharyngeal carcinoma affect transcriptional activity in vitro

The nucleotide polymorphisms within the Epstein–Barr virus C and Q promoters from nasopharyngeal carcinoma affect transcriptional activity in vitro
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鼻咽癌 Epstein-Barr 病毒 C 和 Q 启动子内的核苷酸多态性影响体外转录活性

DOI:
10.1007/s00405-011-1862-x
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发表时间:
2012
影响因子:
2.6
通讯作者:
D. Xie
D. Xie
中科院分区:
医学3区
文献类型:
--
作者:
Feng;Xian;Wen;Ying;Yu;Y. Liao;C. Shao;Y. Zong;S. Mai;D. Xie

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EB 病毒 (EBV) 是一种普遍存在的人类 γ 疱疹病毒,与伯基特淋巴瘤 (BL)、胃癌、鼻咽癌 (NPC) 和 NK/T 细胞淋巴瘤相关。两个病毒启动子 Cp 和 Qp 对于 EBV 潜伏感染很重要。用于初次感染的潜伏期 Cp 驱动全谱 EBV 核抗原的表达。 Qp 在 EBV 相关肿瘤中活跃并驱动潜伏期 I/II 表达模式。在这项研究中,我们测定了来自广东健康携带者的外周血单核细胞(PBMC)以及鼻咽癌、鼻腔NK/T淋巴瘤、BL和胃癌活检组织中Cp和Qp启动子区域的核苷酸多态性。 Cp 中的−12G>T 和+69 C>T 以及Qp 中的−197 G>A 和+1 G>C 的序列变化在NPC 中经常被识别。使用荧光素酶基因报告基因的瞬时转染研究显示,与原型相比,Cp +69T 变体的基因表达显着降低 (57.11%),而 Qp +1C 变体的基因表达增加 (43.5%),表明这些序列变异影响启动子活性。我们的结果表明,Cp 和 Qp 的核苷酸多态性在 NPC 中频繁出现,可能与 EBV 的肿瘤发生有关。
Epstein–Barr virus (EBV) is a ubiquitous human gamma herpesvirus that is associated with Burkitt’s lymphoma (BL), gastric carcinoma, nasopharyngeal carcinoma (NPC), and NK/T-cell lymphoma. Two viral promoters, Cp and Qp, are important for EBV latent infection. The latency Cp, which is used in primary infection, drives expression of the full spectrum of EBV nuclear antigens. Qp is active in EBV-associated tumors and drives the latency I/II expression pattern. In this study, we determined nucleotides polymorphisms in the Cp and Qp promoter regions in peripheral blood mononuclear cells (PBMCs) from Cantonese healthy carriers and in biopsies of NPC, nasal NK/T lymphoma, BL, and gastric carcinoma. The sequence changes of −12G>T and +69 C>T in Cp and −197 G>A and +1 G>C in Qp were frequently identified in NPC. Transient transfection studies using luciferase gene reporters revealed a significant reduction (57.11%) in gene expression from the Cp +69T variant and increased expression (43.5%) from the Qp +1C variant compared to the prototype, suggesting that these sequence variations affect promoter activity. Our results indicate that the nucleotides polymorphisms in Cp and Qp occur frequently in NPC and might contribute to the oncogenesis of EBV.
DOI: 10.1073/pnas.91.16.7568
发表时间: 1994-08-02
影响因子: 11.1
作者:
GROSSMAN, SR;JOHANNSEN, E;KIEFF, E
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DOI: 10.1101/gad.4.10.1730
发表时间: 1990-10-01
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DOI: 10.1073/pnas.0307808100
发表时间: 2004
期刊: Proceedings of the National Academy of Sciences of the United States of America.
影响因子: --
作者:
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DOI: 10.1073/pnas.92.18.8293
发表时间: 1995
影响因子: 11.1
作者:
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通讯作者: Maizels,N
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发表时间: 1999-08-01
影响因子: 6
作者:
Tao, Q;Swinnen, LJ;Ambinder, RF
通讯作者: Ambinder, RF