Abstract
Background
Bladder cancer, predominantly affecting men, is a prevalent malignancy of the urinary system. Although platinum-based chemotherapy has demonstrated certain enhancements in overall survival when compared to surgery alone, the efficacy of treatments is impeded by the unfavorable side effects of conventional chemotherapy medications. Nonetheless, immunotherapy exhibits potential in the treatment of bladder cancer.
Methods
To create an immune-associated prognostic signature for bladder cancer, bioinformatics analyses were performed utilizing The Cancer Genome Atlas (TCGA) database in this study. By identifying differential gene expressions between the high-risk and low-risk groups, a potential therapeutic drug was predicted using the Connectivity Map database. Subsequently, the impact of this drug on the growth of T24 cells was validated through MTT assay and 3D cell culture techniques.
Results
The signature included 1 immune-associated LncRNA (NR2F1-AS1) and 16 immune-associated mRNAs (DEFB133, RBP7, PDGFRA, CGB3, PDGFD, SCG2, ADCYAP1R1, OPRL1, PGR, PSMD1, TANK, PRDX1, ADIPOR2, S100A8, AHNAK, EGFR). Based on the assessment of risk scores, the patients were classified into cohorts of low-risk and high-risk individuals. The cohort with low risk demonstrated a considerably higher likelihood of survival in comparison to the group with high risk. Furthermore, variations in immune infiltration were noted among the two categories. Cephaeline, a possible medication, was discovered by analyzing variations in gene expression. It exhibited promise in suppressing the viability and growth of T24 bladder cancer cells.
Conclusion
The novel predictive pattern allows for efficient categorization of patients with bladder cancer, enabling focused and rigorous treatment for those expected to have a worse prognosis. The discovery of a possible curative medication establishes a basis for forthcoming immunotherapy trials in bladder cancer.
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Data Availability
The data of RNA-HTSeq and clinical information data of BLCA patients were derived from the following resources available in the public domain: https://portal.gdc.cancer.gov/; The data that support the findings of this study in Figure 13 are openly available in figshare at https://doi.org/10.6084/m9.figshare.24168177.
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Acknowledgements
The present study was supported by the National Natural Science Foundation of China (82000230 to Gao Jinlai, 82104197 to Jin Jing), Science and Technology Bureau of Jiaxing (2020AY10021), Basic Public Welfare Research Project of Zhejiang Province (LGC21B050011) and the Qin Shen Scholar Program of Jiaxing University. We thank Jiaxing Medical Key Subject Funding of Zhejiang Province (2023-ZC-013), the Jiaxing Key Laboratory of Precise Diagnosis and Treatment of Urological Tumor (2020-mnzdsys) and Jiaxing Innovation Leading Program for Elite Talents (84122009) for their help.
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The study was conceptualized by ZX and LZ. The experiments and data analysis were conducted by PH, SB, FX, WJ, ZB, and LS. The original draft of the paper was written by JJ, HY, and GJ. Constructive discussions involving JJ and GJ contributed to the enhancement of the paper. The final manuscript was read and approved by all authors.
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11255_2023_3796_MOESM1_ESM.pdf
Figure S1. Clinical information varied between the high and low-risk groups in the risk test database. Figure S2. Clinical information varied between the high and low-risk groups in the risk train database. Figure S3. Heatmap of immune cell expression between high-risk and low-risk groups. Figure S4. Barplot of immune cell expression between high-risk and low-risk groups (PDF 280 KB)
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Xiaoqin, Z., Zhouqi, L., Huan, P. et al. Development of a prognostic signature for immune-associated genes in bladder cancer and exploring potential drug findings. Int Urol Nephrol 56, 483–497 (2024). https://doi.org/10.1007/s11255-023-03796-7
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DOI: https://doi.org/10.1007/s11255-023-03796-7