A Cuproptosis-Related lncRNAs Signature Could Accurately Predict Prognosis in Patients with Clear Cell Renal Cell Carcinoma

Abstract

Background. Clear cell renal cell carcinoma (ccRCC) is the most common subtype of kidney cancers. As cuproptosis, a new cell death mechanism proposed recently, differs from all other known mechanisms regulating cell death, we aimed to create prognostic markers using cuproptosis-related long non-coding ribonucleic acids (RNAs; lncRNAs) and elucidate the molecular mechanism. Methods. Data from transcriptome RNA sequencing of ccRCC samples and the relevant clinical data were downloaded from The Cancer Genome Atlas, and Pearson’s correlation analysis was implemented to obtain the cuproptosis-related lncRNAs. Then, univariate Cox, multivariate Cox, and Least Absolute Shrinkage and Selection Operator Cox analyses were performed to construct the risk signatures. The cuproptosis-related lncRNAs predictive signature was evaluated with receiver operating characteristic curves and subgroup analysis. Finally, Gene Set Enrichment Analysis (GSEA), single-sample GSEA (ssGSEA), tumor immune microenvironment (TIME), and immune checkpoints were performed to explore the relationship between immunity and patient prognosis. Results. Five cuproptosis-related lncRNAs, including FOXD2-AS1, LINC00460, AC091212.1, AC007365.1, and AC026401.3, were used to construct the signature. In the training and test sets, low-risk groups (as identified by a risk score lower than the median) demonstrated a better prognosis with an area under the curve for 1-, 3-, and 5-year survival being 0.793, 0.716, and 0.719, respectively. GSEA analysis suggested significant enrichment of the tricarboxylic acid cycle and metabolism-related pathways in the low-risk group. Besides, both ssGSEA and TIME suggested that the high-risk group exhibited more active immune infiltration. Conclusion. We proposed a cuproptosis-related lncRNAs signature, which had the potential for prognoses and prediction. Our findings might contribute to elucidating potential genomic biomarkers and targets for future therapies in the cuproptosis-related signaling pathways.

Identification of disulfidptosis-related-ferroptosis associated lncRNAs signature as a novel prognosis model for kidney renal clear cell carcinoma

“…Previous research has linked FOXD2-AS1 to cuproptosis [35]- [36] and shown that it is highly expressed in ccRCC cell lines [35]. FOXD2-AS1 is aberrantly expressed in various cancers and has been linked to cancer progression [37] via targeting Akt/E2F1 [38], P53 [39] , the microRNA-98-5p/CPEB4 axis [40] and miR-25-3p/Sema4C [41].…”

Characterization of tumor microenvironment and sensitive chemotherapy drugs based on cuproptosis-related signatures in renal cell carcinoma

“…Several studies showed FOXD2-AS1 was associated with many cancers, such as breast cancer, ovarian cancer, retinoblastoma, and cervical cancer. High expression of FOXD2-AS1 could promote the progression of cancer cell, including proliferation, migration, and invasion [31][32][33][34][35], and could be prognostic biomarker for many cancers, such as oral squamous cell carcinoma, head and neck squamous cell carcinoma, renal cancer [36][37][38]. LINC00839 could promote the progression of several cancers, including gastric cancer, neuroblastoma, colorectal cancer, and liver cancer [39][40][41][42].…”

Bioinformatics analysis and experimental validation of m6A and cuproptosis-related lncRNA NFE4 in clear cell renal cell carcinoma

“…However, whether lncRNAs are involved in m6A and cuproptosis remains unknown and their identification may speed up diagnoses and prognoses for ccRCC patients. Recent studies have analyzed m6A and cuproposis-associated lncRNAs in renal cancer [ 35 , 36 ]; however, only a few studies have explored their roles in ccRCC.…”