Extracellular Matrix–Related Six-lncRNA Signature as a Novel Prognostic Biomarker for Bladder Cancer

OncoTargets and Therapy

关键词: long non-coding rna;    bladder cancer;    extracellular matrix;    immune cell infiltration;    prognosis;    signature;   

DOI  :  

来源: DOAJ

【 摘 要 】

Liangliang Qing,1,* Peng Gu,1,* Mingsheng Liu,2 Jihong Shen,1 Xiaodong Liu,1 Runyun Guang,1 Kunbin Ke,1 Zhuo Huang,1 Wenhui Lee,1,3 Hui Zhao1 1Department of Urology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, People’s Republic of China; 2Second Ward of Urology, Qujing Affiliated Hospital of Kunming Medical University, Qujing, Yunnan, People’s Republic of China; 3Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, Kunming Institute of Zoology, Kunming, Yunnan, People’s Republic of China*These authors contributed equally to this workCorrespondence: Wenhui LeeKey Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, Kunming Institute of Zoology, 32 Jiaochang East Road, Kunming 650223, Yunnan, People’s Republic of ChinaEmail [e-mail] ZhaoDepartment of Urology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming 650032, Yunnan, People’s Republic of ChinaEmail [e-mail]: Bladder cancer (BC) is the fourth-commones cancer and the sixth-leading cause of cancer-related death among men. However, a lack of reliable biomarkers remains a problem forprognosis and treatment of BC. lncRNAs have been shown to play important roles in various cancers, and have emerged as promising biomarkers for cancer prognosis and treatment.Methods: In this study, using univariate and multivariate Cox regression analysis, we examined the differential expression profiles of 1,651 lncRNAs in the TCGA BLCA cohort and created a prognostic gene signature composed of six lncRNAs (for SNHG12, MAFG-DT, ASMTL-AS1, LINC02321, LINC01322, and LINC00922), designed the SMALLL signature.Results: The SMALLL signature displayed significant prognostic power for overall survival for BC patients in multiple cohorts. Gene Ontology analysis showed that genes coexpressed with the SMALLL signature were associated with the extracellular matrix network, and immune cell–infiltration analysis showed that activated naïve B cells, regulatory T cells, M0 macrophages, eosinophils, resting memory CD4 T cells and resting NK cells were significantly different in high- and low-risk groups. We also confirmed differential expression of the lncRNAs of the SMALLL signature in BC tissue and paracancer normal tissue by qRT-PCR analysis. Cell-invasion and -migration experiments showed that MAFG-AS1, ASMTL-AS1, LINC02321, and LINC00922 significantly affected cell invasion and migration.Conclusion: Our study revealed that the lncRNA signature is an important predictive factor of prognosis and provides a promising biomarker for BC.Keywords: long noncoding RNA, bladder cancer, extracellular matrix, immune-cell infiltration, prognosis, signature

【 授权许可】

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