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Multidimensional Transcriptomics Unveils RNF34 as a Prognostic Biomarker and Potential Indicator of Chemotherapy Sensitivity in Wilms’ Tumour

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Abstract

Nephroblastoma, colloquially known as Wilms’ tumour (WT), is the predominant malignant renal neoplasm arising in the paediatric population. Modern therapeutic approaches for WT incorporate a synergistic combination of surgical intervention, radiotherapy, and chemotherapy, which substantially ameliorate the overall patient survival rate. Despite this, the optimal sequence of chemotherapy and surgical intervention remains a matter of contention, with each strategy presenting its own strengths and weaknesses that could influence clinical decision-making. To make some headway on this clinical dilemma, we deployed a multidimensional transcriptomics integration approach by analysing bulk RNA sequencing data with 136 samples, as well as single-nucleus RNA sequencing (snRNA-seq) and paired spatial transcriptome sequencing (stRNA) data from 32 WT specimens. Our findings identified a distinct elevation of RNF34 expression within WT samples, which correlated with unfavourable prognostic outcomes. Leveraging the Genomics of Drug Sensitivity in Cancer (GDSC), we simultaneously revealed that patients with high expression of RNF34 have higher sensitivity to commonly used chemotherapy drugs for WT. Furthermore, our analysis of snRNA and stRNA data unveiled a reduced proportion of RNF34 expression in neoplastic cells after chemotherapy. Moreover, stRNA data delineated a significant association between a higher proportion of RNF34 expression in cancer cells and adverse features such as anaplastic histology and tumour recurrence. Intriguingly, we also observed a close association between elevated RNF34 expression and a characteristic exhausted tumour immune microenvironment. Collectively, our findings underscore the pivotal role of RNF34 in the prognostic prediction potential and treatment sensitivity of WT. This comprehensive analysis can potentially inform and refine clinical decision-making for WT patients and guide future studies towards the development of optimized, rational therapeutic strategies.

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Data Availability

The bulk RNA-seq data and clinical data of Wilms’ tumour (WT) tissue samples were sourced from the Therapeutically Applicable Research to Generate Effective Treatments (TARGET) database. The GSE2712 cohort and GSE66405 cohort were accessed from the Gene Expression Omnibus (GEO) database using the GEOquery R package. In addition, the pairs of snRNA-seq data and stRNA data were obtained from the Single-cell Pediatric Cancer Atlas Portal (https://scpca.alexslemonade.org/).

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Acknowledgements

This work was supported by the Guangxi Natural Science Foundation (No. 2022GXNSFAA035641 and No. 2023GXNSFAA026134), the Scientific Research Project of Guangxi Provincial Health and Family Planning Commission (No. Z20200317) “Medical Excellence Award” Funded by the Creative Research Development Grant from the First Affiliated Hospital of Guangxi Medical University.

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Authors and Affiliations

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Contributions

JZ, FL, CS, CW and XC contributed to the study design; FL, JT and SC performed immunohistochemistry; JT, SC, JS, XO, MD and HC collected samples and patient information; JZ, FL contributed to the bioinformatics analyses; CS, CW and XC directed the study, obtained funding, and revised the manuscript. JZ and FL wrote the manuscript. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Xun Chen, Congjun Wang or Cheng Su.

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12033_2023_1008_MOESM1_ESM.tif

Supplementary file1 Supplementary Figure 1. Expression comparison of RNF34 between relapse situation based on snRNA data. (A) Featureplot displaying the expression of RNF34 with no relapse (left) and relapse (right). (B) Expression ratio of RNF34 in different cell-types between relapse-no and relapse-yes patients. Cells were defined as RNF34-high group if they expressed RNF34 and as RNF34-low group if they did not express RNF34. (TIF 4747 KB)

12033_2023_1008_MOESM2_ESM.tif

Supplementary file2 Supplementary Figure 2. Expression comparison of RNF34 between anaplastic and favourable patients based on snRNA data. (A) Featureplot displaying the expression of RNF34 between anaplastic (left) and favourable patients (right). (B) Expression ratio of RNF34 in different cell-types between anaplastic and favourable patients. Cells were defined as RNF34-high group if they expressed RNF34 and as RNF34-low group if they did not express RNF34. (TIF 4787 KB)

12033_2023_1008_MOESM3_ESM.tif

Supplementary file3 Supplementary Figure 3. Expression characteristics of RNF34 based on stRNA data. (A) Featureplot showing the expression of RNF34 in spatial locations. The pie plot reveals the number of RNF34-positive cells in cancer cells. Tumour cells were defined as RNF34-high group if they expressed RNF34 and as RNF34-low group if they did not express RNF34 (TIF 281719 KB)

Supplementary file4 (XLSX 13 KB)

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Zheng, J., Liu, F., Tuo, J. et al. Multidimensional Transcriptomics Unveils RNF34 as a Prognostic Biomarker and Potential Indicator of Chemotherapy Sensitivity in Wilms’ Tumour. Mol Biotechnol 66, 1132–1143 (2024). https://doi.org/10.1007/s12033-023-01008-2

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