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Identification of ITPR1 as a Hub Gene of Group 3 Medulloblastoma and Coregulated Genes with Potential Prognostic Values

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Abstract

The Group 3 Medulloblastoma (Grp3-MB) is an aggressive molecular subtype with a high incidence of metastasis and deaths. In this study, were used an RNA sequencing data (RNA-Seq) from a Brazilian cohort of MBs to identify hub genes associated with the metastatic risk. Data validation were performed by using multiple large datasets from MBs (GSE85217, GSE37418, and EGAS00001001953). DESeq2 package in R software was used to identify the differentially expressed genes (DEGs) in our RNA-Seq data. The DEGs data were accessed to construct the modules/graphs of co-expression and to identify hub genes through Cytoscape platform. The coregulated genes were enriched by the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, and the protein–protein interaction (PPI) network was visualized by Cytoscape. The Kaplan–Meier plotter and ROC curves were used to validate the diagnostic and prognostic values of specific biomarkers identified through this model. We identified that inositol 1,4,5-trisphosphate receptor type 1 (ITPR1) as a downregulated hub gene, with a high diagnostic accuracy to Grp3-MBs and associated with tumor metastasis. In addition, we identified genes significantly correlated with ITPR1 that were associated with metastasis in Grp3-MB (ATP1A2, MTTL7A, and RGL1) and worst overall survival in MBs (ANTXR1 and RGL1). Our findings suggest that the ITPR1 hub gene is potentially involved in the metastatic process for Grp3-MB. Our data also provide evidence of targets that may serve as prognostic predictors and/or regulators for the metastatic process that maybe explored for further research of individualized therapy to Grp3-MBs.

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The data and other items supporting the results of the study will be made available upon reasonable request.

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Acknowledgements

We want to thank and acknowledge patients and families affected by medulloblastomas for their generous contributions to these studies.

Funding

The study was supported by public Brazilian grants from the São Paulo State Research Foundation (FAPESP), Grant numbers: 2014/20341–0, 2017/26160–5, Brazilian Research Council (CNPq), Coordination for the Improvement of Higher Education Personnel (CAPES) Financial Code 001, and Foundation for Support of Education, Research, and Assistance (FAEPA), Brazil.

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Contributions

P.F.C designed, conducted, and interpreted all experiments, and wrote the manuscript. G.R.S, L.C.V, A.M.S, C.A.P.C; G.A.V.C, and L.F.P.N wrote and organized the data, created the figures/tables, and edited and critically revised the manuscript. R.G.P.Q, S.K.N.M, S.R.B, C.A.S, and L.G.T revised the text for important intellectual content. E. T. V designed the study and critically read the manuscript. All authors critically read and approved the final manuscript.

Corresponding author

Correspondence to Pablo Ferreira das Chagas.

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This study was approved by the HC/FMRP-USP Research Ethics Committee (Approval number: CAAE: 62604816.4.000.5440), and informed consent was obtained from all patients included.

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Not applicable.

Competing Interests

The authors declare no competing interests.

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das Chagas, P.F., de Sousa, G.R., Veronez, L.C. et al. Identification of ITPR1 as a Hub Gene of Group 3 Medulloblastoma and Coregulated Genes with Potential Prognostic Values. J Mol Neurosci 72, 633–641 (2022). https://doi.org/10.1007/s12031-021-01942-3

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  • DOI: https://doi.org/10.1007/s12031-021-01942-3

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