V-val突变型EB病毒核抗原1的功能研究
背景与目的:EB病毒核抗原1(Epstein-Barr viral nuclear antigen 1,EBNA1)对于维持EB病毒的潜伏感染有重要作用。V-val变异型的EBNA1与鼻咽癌有密切的相关性。本研究旨在比较原型和V-val变异型的EBNA1基因在上皮细胞中的功能的差异。方法:用PCR方法扩增出原型和V-val变异型EBNA1基因的全长并克隆到pGFP载体上,转染HEK293细胞,检测两种亚型的EBNA1蛋白的表达对细胞生物学性状的影响。以含有EB病毒增强子FR序列的荧光素酶载体作为报告基因,比较两种亚型的EBNA1基因对质粒的转录激活能力。结果:原型和V-val变异型EBNA1基...
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Published in | Ai zheng Vol. 27; no. 3; pp. 231 - 236 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
华南肿瘤学国家重点实验室,广东,广州,510060
2008
中山大学肿瘤防治中心实验研究部,广东,广州,510060 |
Subjects | |
Online Access | Get full text |
ISSN | 1000-467X 1944-446X |
DOI | 10.3321/j.issn:1000-467X.2008.03.002 |
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Abstract | 背景与目的:EB病毒核抗原1(Epstein-Barr viral nuclear antigen 1,EBNA1)对于维持EB病毒的潜伏感染有重要作用。V-val变异型的EBNA1与鼻咽癌有密切的相关性。本研究旨在比较原型和V-val变异型的EBNA1基因在上皮细胞中的功能的差异。方法:用PCR方法扩增出原型和V-val变异型EBNA1基因的全长并克隆到pGFP载体上,转染HEK293细胞,检测两种亚型的EBNA1蛋白的表达对细胞生物学性状的影响。以含有EB病毒增强子FR序列的荧光素酶载体作为报告基因,比较两种亚型的EBNA1基因对质粒的转录激活能力。结果:原型和V-val变异型EBNA1基因的表达对HEK293细胞的生长速度没有明显影响,但表达原型EBNA1的细胞的克隆形成能力明显低于V-val亚型。在裸鼠致瘤实验中,接种表达原型和V-val变异型EBNA1细胞的实验组均未见肿瘤形成。但是在瞬时转染实验中,表达V-val变异型EBNA1基因的HEK293细胞的荧光素酶活性明显高于原型EBNA1基因。结论:原型和变异型EBNA1均未发现有明显的转化细胞的能力,但是V-val变异型EBNA1蛋白与原型相比,其转录激活的功能明显增强。 |
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AbstractList | 背景与目的:EB病毒核抗原1(Epstein-Barr viral nuclear antigen 1,EBNA1)对于维持EB病毒的潜伏感染有重要作用。V-val变异型的EBNA1与鼻咽癌有密切的相关性。本研究旨在比较原型和V-val变异型的EBNA1基因在上皮细胞中的功能的差异。方法:用PCR方法扩增出原型和V-val变异型EBNA1基因的全长并克隆到pGFP载体上,转染HEK293细胞,检测两种亚型的EBNA1蛋白的表达对细胞生物学性状的影响。以含有EB病毒增强子FR序列的荧光素酶载体作为报告基因,比较两种亚型的EBNA1基因对质粒的转录激活能力。结果:原型和V-val变异型EBNA1基因的表达对HEK293细胞的生长速度没有明显影响,但表达原型EBNA1的细胞的克隆形成能力明显低于V-val亚型。在裸鼠致瘤实验中,接种表达原型和V-val变异型EBNA1细胞的实验组均未见肿瘤形成。但是在瞬时转染实验中,表达V-val变异型EBNA1基因的HEK293细胞的荧光素酶活性明显高于原型EBNA1基因。结论:原型和变异型EBNA1均未发现有明显的转化细胞的能力,但是V-val变异型EBNA1蛋白与原型相比,其转录激活的功能明显增强。 R73.3; 背景与目的:EB病毒核抗原1(Epstein-Barr viral nuclear antigen 1,EBNA1)对于维持EB病毒的潜伏感染有重要作用.V-val变异型的EBNAl与鼻咽癌有密切的相关性.本研究旨在比较原型和V-val变异型的EBNAl基因在上皮细胞中的功能的差异.方法:用PCR方法扩增出原型和V-val变异型EBNA1基因的全长并克隆到pGFP载体上,转染HEK293细胞,检测两种亚型的EBNA1蛋白的表达对细胞生物学性状的影响.以含有EB病毒增强子FR序列的荧光素酶载体作为报告基因.比较两种亚型的EBNA1基因对质粒的转录激活能力.结果:原型和V-val变异型EBNA1基因的表达对HEK293细胞的生长速度没有明显影响,但表达原型EBNA1的细胞的克隆形成能力明显低于V-val亚型.在裸鼠致瘤实验中,接种表达原型和V-val变异型EBNA1细胞的实验组均未见肿瘤形成.但是在瞬时转染实验中,表达V-val变异型EBNA1基因的HEK293细胞的荧光素酶活性明显高于原型EBNA1基因.结论:原型和变异型EBNA1均未发现有明显的转化细胞的能力,但是V-val变异型EBNA1蛋白与原型相比,其转录激活的功能明显增强. |
Author | 买世娟 李大疆 周昕熙 陈丽珍 冯启胜 张如华 余杏娟 曾益新 |
AuthorAffiliation | 华南肿瘤学国家重点实验室,广东广州510060 中山大学肿瘤防治中心实验研究部,广东广州510060 |
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DocumentTitleAlternate | Functions of V-val Subtype of Epstein-Barr Nuclear Antigen 1 |
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Notes | Variant Nasopharyngeal neoplasm; Epstein-Barr virus; Epstein-Barr nuclear antigen 1 ; Variant Epstein-Barr nuclear antigen 1 R730.5 Nasopharyngeal neoplasm Epstein-Barr virus 44-1195/R R394 |
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Snippet | 背景与目的:EB病毒核抗原1(Epstein-Barr viral nuclear antigen 1,EBNA1)对于维持EB病毒的潜伏感染有重要作用。V-val变异型的EBNA1与鼻咽癌有密切的相关性。本研究旨在... R73.3; 背景与目的:EB病毒核抗原1(Epstein-Barr viral nuclear antigen 1,EBNA1)对于维持EB病毒的潜伏感染有重要作用.V-val变异型的EBNAl与鼻咽癌有密切的相关性.本研究旨... |
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SubjectTerms | EB病毒 EB病毒核抗原1 变异型 鼻咽肿瘤 |
Title | V-val突变型EB病毒核抗原1的功能研究 |
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