Banko Ana, Miljanovic Danijela, Lazarevic Ivana, Cirkovic Andja
Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia.
Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia.
Pathogens. 2021 Aug 20;10(8):1057. doi: 10.3390/pathogens10081057.
Nasopharyngeal carcinoma (NPC) is an aggressive tumor with a complex etiology. Although Epstein-Barr virus (EBV) infection is known environmental factor for NPC development, the degree to which EBV naturally infects nasopharyngeal epithelium and the moment when and why the virus actively begins to affect cell transformation remains questionable. The aim of this study was to explore the association between LMP1 gene variability and potential contribution to NPC development. A systematic review was performed through searches of PubMed, Web of Science (WoS) and SCOPUS electronic databases. Additionally, meta-analysis of the difference in the frequency of seven LMP1 gene variants in NPC and control individuals was accomplished. The results from this study give a proof of concept for the association between 30 bp deletion (OR = 3.53, 95% CI = 1.48-8.43) and Xhol loss (OR = 14.17, 95% CI = 4.99-40.20) and NPC susceptibility when comparing biopsies from NPC and healthy individuals. Otherwise, 30 bp deletion from NPC biopsies could not distinguish NPC from EBV-associated non-NPC tumors (OR = 1.74, 95% CI = 0.81-3.75). However, B95-8, China1 and North Carolina variants were uncommon for NPC individuals. Much more efforts remains to be done to verify the biological significance of the differences observed, define so-called "high-risk" EBV variants and make it available for clinical application.
鼻咽癌(NPC)是一种具有复杂病因的侵袭性肿瘤。尽管已知爱泼斯坦-巴尔病毒(EBV)感染是鼻咽癌发生的环境因素,但EBV自然感染鼻咽上皮的程度以及病毒何时以及为何开始积极影响细胞转化仍存在疑问。本研究的目的是探讨LMP1基因变异性与对鼻咽癌发生的潜在贡献之间的关联。通过检索PubMed、科学网(WoS)和SCOPUS电子数据库进行了系统综述。此外,还对鼻咽癌患者和对照个体中7种LMP1基因变体频率的差异进行了荟萃分析。本研究结果为30 bp缺失(OR = 3.53,95% CI = 1.48 - 8.43)和Xhol缺失(OR = 14.17,95% CI = 4.99 - 40.20)与鼻咽癌易感性之间的关联提供了概念验证,该验证是在比较鼻咽癌活检组织和健康个体活检组织时得出的。否则,鼻咽癌活检组织中的30 bp缺失无法区分鼻咽癌与EBV相关的非鼻咽癌肿瘤(OR = 1.74,95% CI = 0.81 - 3.75)。然而,B95 - 8、China1和北卡罗来纳变体在鼻咽癌个体中并不常见。仍需付出更多努力来验证所观察到差异的生物学意义,定义所谓的“高风险”EBV变体并使其可用于临床应用。