肺腺癌和肺鳞癌中不同长链非编码RNA转录指纹的转录组分析
Transcriptome analysis of distinct long non-coding RNA transcriptional fingerprints in lung adenocarcinoma and squamous cell carcinoma.
作者信息
Wei Yaqiang, Zhang Xiaofei
机构信息
Department of Respiratory Medicine, Yan'an City People's Hospital, Yan'an, People's Republic of China.
Department of Oncology, Yan'an City People's Hospital, Yan'an, People's Republic of China.
出版信息
Tumour Biol. 2016 Dec;37:16275–16285. doi: 10.1007/s13277-016-5422-2. Epub 2016 Oct 29.
Non-small cell lung cancer (NSCLC) is one of the leading causes of cancer-related death, including two major pathologic subtypes, adenocarcinoma (AD) and squamous cell carcinoma (SCC). There are significant differences in the aberrant gene profiling and molecular characteristics among LUAD and LUSC, which lead to the different chemotherapeutic regimens administered to the two NSCLC subtypes. Therefore, unique genetic or epigenetic accurately distinguishing these two subtypes is critical for the diagnosis and treatment of patients. In this study, we tried to develop and validate novel long non-coding RNA (lncRNA)-based signatures to facilitate the diagnosis and individualized treatment of LUAD and LUSC. To analyze the distinct lncRNA profiling in LUAD and LUSC, the paired tissue samples of RNA sequencing or microarray data from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) was used. We found that lncRNA expression pattern is different in LUAD and LUSC, and three up-regulated and down-regulated lncRNAs expressions in LUAD and LUSC tissues were validated. In addition, knockdown of the up-regulated lncRNA AFAP1-AS1 and LINC00511 impaired LUAD cell proliferation, while knockdown of PVT1 inhibited LUSC cell growth. Furthermore, four 6-lncRNAs signature expression patterns were found to be significantly associated with LUAD and LUSC patient overall and progression-free survival. Taken together, the different lncRNAs signature might accurately distinguish LUAD and LUSC and predict clinical outcome for these two different subtypes of NSCLC.
非小细胞肺癌(NSCLC)是癌症相关死亡的主要原因之一,包括两种主要的病理亚型,腺癌(AD)和鳞状细胞癌(SCC)。肺腺癌(LUAD)和肺鳞状细胞癌(LUSC)的异常基因谱和分子特征存在显著差异,这导致了针对这两种NSCLC亚型采用不同的化疗方案。因此,准确区分这两种亚型的独特基因或表观遗传特征对于患者的诊断和治疗至关重要。在本研究中,我们试图开发并验证基于新型长链非编码RNA(lncRNA)的特征,以促进LUAD和LUSC的诊断和个体化治疗。为了分析LUAD和LUSC中不同的lncRNA谱,我们使用了来自癌症基因组图谱(TCGA)和基因表达综合数据库(GEO)的RNA测序或微阵列数据的配对组织样本。我们发现LUAD和LUSC中的lncRNA表达模式不同,并验证了LUAD和LUSC组织中三种lncRNA的上调和下调表达。此外,上调的lncRNA AFAP1-AS1和LINC00511的敲低会损害LUAD细胞增殖,而PVT1的敲低则会抑制LUSC细胞生长。此外,发现四种由6个lncRNA组成的特征表达模式与LUAD和LUSC患者的总生存期和无进展生存期显著相关。综上所述,不同的lncRNA特征可能准确区分LUAD和LUSC,并预测这两种不同亚型NSCLC的临床结局。