Comprehensive Analyses of Mutation-Derived Long-Chain Noncoding RNA Signatures of Genome Instability in Kidney Renal Papillary Cell Carcinoma

Frontiers in Genetics

Shuangshuang Lu¹  Zhijing Huang¹  Jian Li¹  Xiaoxu Zhang¹  Yunguang Liu¹  Shimei Wei¹  Jiawei Yan¹  Qiong Wang¹  Yan Zhang²  Sanju Yang³  Liying Chen³ 

[1]Department of Pediatrics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China

[2]Department of Pediatrics, Shanxi Children's Hospital, Taiyuan, China

[3]Graduate School of Youjiang Medical University for Nationalities, Baise, China

关键词: genomic instability;    KIRP;    lncRNAs;    mutator phenotype;    prognostic;   

DOI  :  10.3389/fgene.2022.874673

来源: DOAJ

【 摘 要 】

Background: The role of long-chain noncoding RNA (lncRNA) in genomic instability has been demonstrated to be increasingly importance. Therefore, in this study, lncRNAs associated with genomic instability were identified and kidney renal papillary cell carcinoma (KIRP)-associated predictive features were analysed to classify high-risk patients and improve individualised treatment.Methods: The training (n = 142) and test (n = 144) sets were created using raw RNA-seq and patient’s clinical data of KIRP obtained from The Cancer Genome Atlas (TCGA).There are 27 long-chain noncoding RNAs (lncRNAs) that are connected with genomic instability, these lncRNAs were identified using the ‘limma’ R package based on the numbers of somatic mutations and lncRNA expression profiles acquired from KIRP TCGA cohort. Furthermore, Cox regression analysis was carried out to develop a genome instability-derived lncRNA-based gene signature (GILncSig), whose prognostic value was confirmed in the test cohort as well as across the entire KIRP TCGA dataset.Results: A GILncSig derived from three lncRNAs (BOLA3-AS1, AC004870, and LINC00839), which were related with poor KIRP survival, was identified, which was split up into high- and low-risk groups. Additionally, the GILncSig was found to be an independent prognostic predictive index in KIRP using univariate and multivariate Cox analysis. Furthermore, the prognostic significance and characteristics of GilncSig were confirmed in the training test and TCGA sets. GilncSig also showed better predictive performance than other prognostic lncRNA features.Conclusion: The function of lncRNAs in genomic instability and the genetic diversity of KIRP were elucidated in this work. Moreover, three lncRNAs were screened for prediction of the outcome of KIRP survival and novel insights into identifying cancer biomarkers related to genomic instability were discussed.

【 授权许可】

Unknown