Abstract
Gliomas are the most common primary brain tumors and are highly malignant with a poor prognosis. Pyroptosis, an inflammatory form of programmed cell death, promotes the inflammatory cell death of cancer. Studies have demonstrated that pyroptosis can promote the inflammatory cell death (ICD) of cancer, thus affecting the prognosis of cancer patients. Therefore, genes that control pyroptosis could be a promising candidate bio-indicator in tumor therapy. The function of pyroptosis-related genes (PRGs) in gliomas was investigated based on the Chinese Glioma Genome Atlas (CGGA), the Cancer Genome Atlas (TCGA) and the Repository of Molecular Brain Neoplasia Data (Rembrandt) databases. In this study, using the non-negative matrix factorization (NMF) clustering method, 26 PRGs from the RNA sequencing data were divided into two subgroups. The LASSO and Cox regression was used to develop a 4-gene (BAX, Caspase-4, Caspase-8, PLCG1) risk signature, and all glioma patients in the CGGA, TCGA and Rembrandt cohorts were divided into low- and high-risk groups. The results demonstrate that the gene risk signature related to clinical features can be used as an independent prognostic indicator in glioma patients. Moreover, the high-risk subtype had rich immune infiltration and high expression of immune checkpoint genes in the tumor immune microenvironment (TIME). The analysis of the Submap algorithm shows that patients in the high-risk group could benefit more from anti-PD1 treatment. The risk characteristics associated with pyroptosis proposed in this study play an essential role in TIME and can potentially predict the prognosis and immunotherapeutic response of glioma patients.
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Data availability
The datasets used in this study are available in CGGA, TCGA and Rembrandt databases.
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We thank the contributions of CGGA, TCGA and Rembrandt database for providing free access to online data.
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This work was supported by Finance science and technology project of hainan province (Grant No. ZDYF2022SHFZ088 and ZDYF2019129), the National Nature Science Foundation of China (Grant No. 82060456), the Innovative Research Project of Hainan Graduate Students (Grant No. Qhyb2021-58) and project supported by Hainan Province Clinical Medical Center.
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CY and KY conceived and designed the study and drafted the manuscript. GH, ZC and SZ performed data analysis and manuscript writing. JT and WH revised the manuscript. All authors reviewed the manuscript. GH, ZC and SZ contributed equally to this work.
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He, G., Chen, Z., Zhuo, S. et al. Pyroptosis: a novel signature to predict prognosis and immunotherapy response in gliomas. Human Cell 35, 1976–1992 (2022). https://doi.org/10.1007/s13577-022-00791-5
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DOI: https://doi.org/10.1007/s13577-022-00791-5