Abstract
Bladder cancer (BC) is one of the most often reported malignancies globally, with a high recurrence rate and associated morbidity and mortality, especially in advanced BC. There has been a surge in the number of molecular targets revealed for BC prognosis and treatment. However, there is still a great need to discover novel biomarkers. Consequently, the current study investigated biomarkers that might indicate the progression of bladder cancer. In this study, bioinformatics analysis was done on a single GEO dataset, and TCGA-BLCA information was connected with differentially expressed genes (DEGs). The levels of mRNA and protein expression were validated using qRT-PCR. According to our findings, CRYAB, ECM1, ALDOB, AOC, GPX3, IGFBP7, AQP2, LASS2, TMEM176A, GALNT1, and LASS2 were highly enriched in cell division, identical protein binding, and developmental process in bladder cancer patients. In addition, among the highly differentiated genes, ECM1, GALNT1, LASS2, and GPX3 showed significant molecular alterations in BC, which are crucial for marker identification. Moreover, the mRNA, CNVs, and protein levels of ECM1, GALNT1, LASS2, and GPX3 were significantly increased in BC patients. Our predictions and analysis studies stated that these four genes act as urine biomarkers and played a crucial role in disease prognosis and the therapeutic process of bladder cancer. Our outcomes showed that these four novel urine biomarkers have the potential to provide innovative diagnostics, early predictions, and disease targets, ultimately improving the BC patient’s prognosis.
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Data Availability
The datasets used and analyzed during the current study are available from the corresponding author on reasonable request.
Abbreviations
- ALDOB :
-
Aldolase B enzyme
- AOC :
-
Allene oxide cyclase
- AQP2 :
-
Aquaporin 2
- BC :
-
Bladder cancer
- cDNA :
-
Complementary deoxyribonucleic acid
- CNVs :
-
Copy number variation
- CRYAB :
-
Alpha-crystallin B chain
- DEG :
-
Differentially expressed genes
- ECM1 :
-
Extracellular matrix protein 1
- EV :
-
Extracellular vesicles
- GalNAc :
-
N-acetyl-d-galactosamine
- GALNT1 :
-
N-acetylgalactosaminyltransferase 1
- GEO :
-
Gene Expression Omnibus
- GPX3 :
-
Glutathione peroxidase 3
- IGFBP7 :
-
Insulin-like growth factor-binding protein 7
- KEGG :
-
Kyoto Encyclopedia of Genes and Genomes
- LASS2 :
-
LAG1 longevity-assurance homolog 2
- MIBC :
-
Muscle-invasive bladder cancer
- mRNA :
-
Messenger RNA
- NGS :
-
Next-generation sequencing
- NIMBC :
-
Non-muscle-invasive bladder carcinomas
- NMP22 :
-
Nuclear matrix protein 22
- PPI :
-
Protein-protein interaction networks
- qRT-PCR :
-
Real-time quantitative reverse transcription-polymerase chain reaction
- STRING :
-
Search Tool for the Retrieval of Interacting Genes/Proteins
- TCGA :
-
The Cancer Genome Atlas
- TCGA-BLCA :
-
Cancer genome atlas bladder cancer
- TMEM176A :
-
Human transmembrane protein 176A
- UALCAN :
-
User-friendly, interactive web resource for analyzing cancer transcriptome data
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RR: funding acquisition, in silico and in vivo experiments, software, data analysis. HW: investigation, data curation, formal analysis. LX: methodology, project administration; SM: conceptualization, editing the manuscript. XY: funding, project administration, supervision drafts the manuscript.
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This study involved animals and ethics approved by the Department of Urology, Third Hospital of Shanxi Medical University Hospital, China, with ethics number YXLL-2021-066.
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Figure S1
Tissue specificity of differentially expressed genes. A) GALNT1, B) ECM1, C) CERS2 and D) GPX3. (PNG 152 kb)
Figure S2
Normalized expression of selected differential marker genes (CRYAB, ALDOB, IGFBP7, RHCG and TMEM176A) in Bladder cancer. A) mRNA expression pattern of CRYAB, ALDOB, IGFBP7, RHCG and TMEM176A marker genes (as a box-whisker plot) in normal and primary tumor samples. B) Expression pattern of the top marker genes based on tumor subgroups based on race. (PNG 49 kb)
Figure S3
A) Molecular alterations for top differential expressed genes. B) Copy number variations of the DEGs. (PNG 93 kb)
Figure S4
mRNA expression profile in bladder cancer and other cancer types. Pan cancer gene expression profile of A) CRYAB, B) ALDOB, C) IGFBP7, and D) TMEM176A. (PNG 69 kb)
Figure S5
Epigenetic analysis of marker genes in BLCA. A) Methylation pattern of the top marker genes (CRYAB, IGFBP7, ALDOB and TMEM176A) in normal and primary tumor samples. B) Expression pattern of the CRYAB, IGFBP7, ALDOB and TMEM176A marker genes based on tumor subgroups based on race. (PNG 46 kb)
Figure S6
Survival analysis of marker genes in BLCA. A) The Kaplan–Meier plotters based on bladder cancer datasets showed patients with high CRYAB expression have poor overall survival, B) IGFBP7, C) ALDOB and D) TMEM176A. (PNG 47 kb)
Table S1
Supplementary Material S1 (3.19 MB xls)
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Ren, R., Wang, H., Xie, L. et al. Identify Potential Urine Biomarkers for Bladder Cancer Prognosis Using NGS Data Analysis and Experimental Validation. Appl Biochem Biotechnol 195, 2947–2964 (2023). https://doi.org/10.1007/s12010-022-04234-7
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DOI: https://doi.org/10.1007/s12010-022-04234-7