Abstract
Cuproptosis is a newly discovered cell death induced by excessive copper in mitochondria distinct from any known forms of apoptosis. Role of cuproptosis has not been well-reported in cancer, especially in clear-cell renal cell carcinoma (ccRCC). We comprehensively interrogated cuproptotic gene signature in ccRCC by reproducing multi-omics datasets and found cuproptosis was decreased in ccRCC compared with normal kidney. Cuproptosis identified a subgroup with significantly better prognosis. Functional annotation supported increased tricarboxylic acid cycle activity and decreased hypoxia signaling corroborated by metabolomics. Cuproptotic tumors showed decreased angiogenesis but were sensitive to Sunitinib and Sorafenib. Cuproptotic level in ccRCC cell lines showed robust negative correlation with copper ionophore Elesclomol. All findings support a respiratory subtype of ccRCC identified by cuproptosis.
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Data availability
All data from the current study was retrieved from public genomic datasets and no new dataset was generated.
Abbreviations
- ccRCC:
-
Clear cell renal cell carcinoma
- CDF:
-
The cumulative distribution function
- CNV:
-
Copy number variation
- CORE:
-
Consumption and release
- DepMap:
-
Dependency map portal
- GDSC:
-
Genomics of drug sensitivity in cancer database
- GISTIC:
-
The genomic identification of significant targets in cancer
- GSE:
-
Gene set enrichment
- GSEA:
-
Gene set enrichment analysis
- GSVA:
-
Gene set variation analysis
- ICIs:
-
Immune checkpoints inhibitors
- IC50:
-
The half maximal inhibitory concentration
- IHC:
-
Immunohistochemical
- NES:
-
Normalized enrichment score
- OS:
-
Overall survival
- ROC:
-
The receiver operating characteristic
- ssGSEA:
-
Single sample gene set enrichment analysis
- TCA cycle:
-
Tricarboxylic acid cycle
- TCGA-KIRC:
-
The cancer genome atlas of kidney renal clear cell carcinoma
- TILs:
-
Tumor infiltrating lymphocytes
- TKIs:
-
Tyrosine kinase inhibitors
- TPM:
-
Transcripts per kilobase million
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This study was sponsored in part by National Natural Science Foundation of China (Grant Nos. 81874123 and 81772709) and by Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU).
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CF, YL, XZ and YL: carried out in silico analysis. KL, LT and CF: participated in the study design. CF, HJ and HW: retrieved data. CF and KL: drafted the manuscript. LT: undertook revision. All authors read and approved the final manuscript.
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Li, K., Tan, L., Li, Y. et al. Cuproptosis identifies respiratory subtype of renal cancer that confers favorable prognosis. Apoptosis 27, 1004–1014 (2022). https://doi.org/10.1007/s10495-022-01769-2
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DOI: https://doi.org/10.1007/s10495-022-01769-2