Dataset Information

Proteomic landscape of urothelial tumor

ABSTRACT: Inverted papilloma (IP) of the urinary bladder is a relatively rare neoplasm that accounts for < 1% of bladder tumor. Although generally accepted as a benign lesion, occasional reports of IP admixed with urothelial carcinoma (UC) or IP patients with synchronous or metachronous UC have raised a concern in the biologic potential of IP.

INSTRUMENT(S): Q Exactive HF-X

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Urinary Bladder Cancer Cell, Epithelial Cell

DISEASE(S): Bladder Transitional Cell Carcinoma

SUBMITTER: Dohyun Han

LAB HEAD: Dohyun Han

PROVIDER: PXD027602 | Pride | 2022-05-20

REPOSITORIES: Pride

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Publications

Proteomic-Based Machine Learning Analysis Reveals PYGB as a Novel Immunohistochemical Biomarker to Distinguish Inverted Urothelial Papilloma From Low-Grade Papillary Urothelial Carcinoma With Inverted Growth.

Jung Minsun M Lee Cheol C Han Dohyun D Kim Kwangsoo K Yang Sunah S Nikas Ilias P IP Moon Kyung Chul KC Kim Hyeyoon H Song Min Ji MJ Kim Bohyun B Lee Hyebin H Ryu Han Suk HS

Frontiers in oncology 20220324

<h4>Background</h4>The molecular biology of inverted urothelial papilloma (IUP) as a precursor disease of urothelial carcinoma is poorly understood. Furthermore, the overlapping histology between IUP and papillary urothelial carcinoma (PUC) with inverted growth is a diagnostic pitfall leading to frequent misdiagnoses.<h4>Methods</h4>To identify the oncologic significance of IUP and discover a novel biomarker for its diagnosis, we employed mass spectrometry-based proteomic analysis of IUP, PUC, a ...[more]

PMID: 35402263

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Project description:Expression profiling by arrays Urothelial carcinoma (UC) can arise at any location along the urothelial tract, including the urethra, bladder, ureter or renal pelvis. Although tumors arising in these various locations demonstrate similar morphology, it is unclear whether the gene expression profiles are similar in the upper tract (ureter and renal pelvis) or in the lower tract (bladder and urethra) carcinomas, especially given their different embryologic origins. As differences may facilitate potentially different screening and treatment modalities, we sought to examine the relationship between urothelial carcinoma of the renal pelvis (rUC) and urothelial carcinoma of the bladder (bUC). Fresh tumor tissue was collected from patients with bUC (n=10) and benign mucosa from the bladder (n=7) was collected from individuals undergoing resection for non-UC conditions for comparison. Gene expression profiles from these samples were determined using high-throughput Affymetrix gene expression microarray chips. Bioinformatic approaches were used to compare gene expression profiles of these samples and those of rUC (n= 14) and normal kidney (n=14) that were mostly used in our previous publication. Using unsupervised analytic approaches, rUC and bUC were indistinguishable. When supervised analytic approach was used, a very small number of potentially differentially expressed genes was identified; these differences were most likely to be limited to a single pathway - the chloride ion binding activity pathway -which was more frequently activated in rUC than in bUC. We found that the gene expression profiles of UCs from the upper and lower tract were extremely similar, suggesting that similar pathogenic mechanisms likely function in the development of these tumors. The differential expression of genes in the identified pathway may represent a potential new avenue for detection of upper tract tumors. Tissue samples with urothelial cell carcinoma from lower tract (bladder) as well as normal references were collected and the gene expression profiles were compared with gene expression profiles of samples in our previously published data set . No technical replicates.

Dataset Information

Proteomic landscape of urothelial tumor

Publications

Proteomic-Based Machine Learning Analysis Reveals PYGB as a Novel Immunohistochemical Biomarker to Distinguish Inverted Urothelial Papilloma From Low-Grade Papillary Urothelial Carcinoma With Inverted Growth.

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