Oncotarget:鼻咽癌预防和早期诊断-生物信息学鉴定癌症差异表达基因

2017-08-16 Emma MedSci原创

鼻咽癌是源自鼻咽上皮的转移性恶性肿瘤,是我国高发恶性肿瘤之一,发病率为耳鼻咽喉恶性肿瘤之首。常见临床症状为鼻塞、涕中带血、耳闷堵感、听力下降、复视及头痛等。早期鼻咽癌患者缺乏症状或具有非特异性症状显著降低了诊断和预测鼻咽癌发展的准确性。

鼻咽癌是源自鼻咽上皮的转移性恶性肿瘤,是我国高发恶性肿瘤之一,发病率为耳鼻咽喉恶性肿瘤之首。常见临床症状为鼻塞、涕中带血、耳闷堵感、听力下降、复视及头痛等。早期鼻咽癌患者缺乏症状或具有非特异性症状显著降低了诊断和预测鼻咽癌发展的准确性。

研究人员对鼻咽癌患者和未患鼻咽癌的健康人基因进行了对比分析,鉴定出hub基因和差异表达基因,为鼻咽癌的早期诊断预防提供参考,也在一定程度表明鼻咽癌分子机制,为进一步研究相关治疗策略提供重要参考。

研究人员分析了包括56个鼻咽癌样品和13个健康对照样品在内的两个基因表达谱(GSE12452和GSE13597),以鉴定差异表达的基因。共鉴定出了179个上调基因和238个下调基因。功能和通路富集分析表明,上调基因显著参与细胞周期,卵母细胞减数分裂,DNA复制和p53信号通路,而下调基因在亨廷顿病(一种常染色体显性遗传性神经退行性疾病)和代谢途径中富集。之后蛋白质-蛋白质互作网络鉴定出10个hub基因,分别为TOP2A(拓扑异构酶(DNA)IIα),CDK1(细胞周期蛋白依赖性激酶1),CCNB1(细胞周期蛋白B1),PCNA(增殖细胞核抗原),MAD2L1(重组人有丝分裂阻滞缺失样蛋白1),BUB1(有丝分裂纺锤体检查点蛋白),CCNB2(细胞周期蛋白B2),AURKA(极光激酶A),CCNA2(细胞周期蛋白A2),CDC6(细胞分裂周期蛋白6),模块分析显示10个hub基因除TOP2A外属于模块1,表明这些基因相关分子途径在鼻咽癌中的上调可能激活鼻咽癌发病机制。

原始出处:
Chen F, et al. Identification of genes and pathways in nasopharyngeal carcinoma by bioinformatics analysis. Oncotarget. 2017 Jul 22. doi: 10.18632/oncotarget.19478.

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    2017-10-06 仁医06
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    2017-08-17 随梦飞扬

    hub基因和差异表达基因,为鼻咽癌的早期诊断和预防提供参考,

    0

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由于ctDNA在血液中实在太罕见,香港中文大学的卢煜明(Dennis Lo)教授将目标转到会引起鼻咽癌的Epstein-Barr的DNA上,在鼻咽癌筛查中进行尝试,提高了该疾病的早期检测和生存率。他领导的这项研究,8月10日发表在《新英格兰医学杂志》NEJM上。

NEJM:血浆EBV病毒分析用于早期鼻咽癌筛查

血浆EBV DNA检查是有效的早期鼻咽癌筛查方法,较传统方法确诊率高、病情发现更早、更利于患者的治疗和恢复