LncRNA16 is a potential biomarker for diagnosis of early-stage lung cancer that promotes cell proliferation by regulating the cell cycle.

Abstract

Early diagnosis of lung cancer greatly reduces mortality; however, the lack of suitable plasma biomarkers presents a major obstacle. Recent studies showed that long noncoding RNAs (lncRNAs) played important roles in cancer initiation and development. Here, we identified differentially expressed lncRNAs in 20 lung cancer samples by using custom designed microarray and evaluated their expression in 118 lung cancer samples by real-time PCR (qRT-PCR). lncRNA16 (ENST00000539303) expression was significantly higher in lung cancer tissues (80/118) than in adjacent matched normal tissues. Importantly, this increase was similar to that in plasma (53/84) of lung cancer patients, including early stage. The role of lncRNA16 in lung cancer was studied in vitro and in vivo by using the lung cancer cell lines and xenograft mouse models. The results reveal that knockdown of lncRNA16 inhibited proliferation of PC9 cells in vitro and also inhibited tumor growth in xenograft mouse models. Overexpression of lncRNA16 promoted proliferation of A549 cells in vitro and also promoted tumor growth in xenograft mouse models. Specifically, we showed that lncRNA16 promoted G2/M transition by regulating cyclin B1 transcription. Together, our findings suggest that lncRNA16 is a promising biomarker suitable for early diagnosis of lung cancer, and a potential target for lung cancer treatment.

• Authors: Huange Zhu, Liyi Zhang, Shi Yan, Wenmei Li, Jiantao Cui, Min Zhu, Nan Xia, Yue Yang, Jiao Yuan, Xiaowei Chen, Jianjun Luo, Runsheng Chen, Rui Xing, Youyong Lu, Nan Wu
• Journal: Oncotarget (Oncotarget) Vol. 8 Issue 5 Pg. 7867-7877 (Jan 31 2017) ISSN: 1949-2553 [Electronic] United States
• PMID: 27999202 (Publication Type: Journal Article)

Chemical References

• Biomarkers, Tumor
• CCNB1 protein, human
• Cell-Free Nucleic Acids
• Cyclin B1
• RNA, Long Noncoding
• SNHG16 lncRNA, human

Topics

• A549 Cells
• Animals
• Biomarkers, Tumor (blood, genetics)
• Cell Cycle
• Cell Proliferation
• Cell-Free Nucleic Acids (blood, genetics)
• Cyclin B1 (genetics, metabolism)
• Female
• Gene Expression Profiling (methods)
• Gene Expression Regulation, Neoplastic
• Humans
• Lung Neoplasms (blood, genetics, pathology)
• Mice, Inbred BALB C
• Mice, Nude
• Neoplasm Staging
• Oligonucleotide Array Sequence Analysis
• RNA Interference
• RNA, Long Noncoding (blood, genetics)
• Real-Time Polymerase Chain Reaction
• Signal Transduction
• Time Factors
• Transcription, Genetic
• Transfection