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Signature based on RNA-binding protein-related genes for predicting prognosis and guiding therapy in non-small cell lung cancer. | LitMetric

Signature based on RNA-binding protein-related genes for predicting prognosis and guiding therapy in non-small cell lung cancer.

Front Genet

Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu, China.

Published: September 2022

AI Article Synopsis

Article Abstract

Studies have reported that RNA-binding proteins (RBPs) are dysregulated in multiple cancers and are correlated with the progression and prognosis of disease. However, the functions of RBPs in non-small cell lung cancer (NSCLC) remain unclear. The present study aimed to explore the function of RBPs in NSCLC and their prognostic and therapeutic value. The mRNA expression profiles, DNA methylation data, gene mutation data, copy number variation data, and corresponding clinical information on NSCLC were downloaded from The Cancer Genome Atlas, Gene Expression Omnibus, and the University of California Santa Cruz Xena databases. The differentially expressed RBPs were identified between tumor and control tissues, and the expression and prognostic value of these RBPs were systemically investigated by bioinformatics analysis. A quantitative polymerase chain reaction (qPCR) was performed to validate the dysregulated genes in the prognostic signature. A prognostic RBP-related signature was successfully constructed based on eight RBPs represented as a risk score using least absolute shrinkage and selection operator (LASSO) regression analysis. The high-risk group had a worse overall survival (OS) probability than the low-risk group ( < 0.001) with 1-, 3-, and 5-year area under the receiver operator characteristic curve values of 0.671, 0.638, and 0.637, respectively. The risk score was associated with the stage of disease ( < 0.05) and was an independent prognostic factor for NSCLC when adjusted for age and UICC stage ( < 0.001, hazard ratio (HR): 1.888). The constructed nomogram showed a good predictive value. The , focal adhesion, and NOD-like receptor signaling pathways were the primary pathways in the high-risk group (adjusted value <0.05). The high-risk group was correlated with increased immune infiltration ( < 0.05), upregulated relative expression levels of programmed cell death 1 () ( = 0.015), cytotoxic T-lymphocyte-associated protein 4 () ( = 0.042), higher gene mutation frequency, higher tumor mutational burden ( = 0.034), and better chemotherapy response ( < 0.001). The signature was successfully validated using the GSE26939, GSE31210, GSE30219, and GSE157009 datasets. Dysregulation of these genes in patients with NSCLC was confirmed using the qPCR in an independent cohort ( < 0.05). An RBP-related signature was successfully constructed to predict prognosis in NSCLC, functioning as a reference for individualized therapy, including immunotherapy and chemotherapy.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9479344PMC
http://dx.doi.org/10.3389/fgene.2022.930826DOI Listing

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