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Published in: World Journal of Urology 8/2019

01-08-2019 | Original Article

Mitochondrial PIWI-interacting RNAs are novel biomarkers for clear cell renal cell carcinoma

Authors: Chenming Zhao, Yuri Tolkach, Doris Schmidt, Marieta Toma, Michael H. Muders, Glen Kristiansen, Stefan C. Müller, Jörg Ellinger

Published in: World Journal of Urology | Issue 8/2019

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Abstract

Purpose

PIWI-interacting RNAs (piRNAs) have been suggested to serve as biomarkers in cancer. In this study, we validated the expression profile of two piRNAs derived from mitochondria, piR-34536 and piR-51810, in tissue and serum of a cohort of clear cell renal cell carcinoma (ccRCC) patients.

Methods

Tissue and serum samples of patients with ccRCC were collected prospectively in our biobank. Total RNA was isolated from 118 ccRCC tissues, 75 normal renal tissues as well as 30 serum samples from patients with ccRCC, and 15 serum samples from patients with non-malignant diseases. The expression of piRNAs was determined using quantitative real-time PCR.

Results

Both piR-34536 and piR-51810 were downregulated in ccRCC compared to non-malignant renal tissue. Decreased tissue piRNA levels were significant and independent predictors of shortened progression-free, cancer-specific and overall survival of ccRCC patients. The piRNA levels in serum did not differ in ccRCC patients and control subjects.

Conclusions

The expression of piR-34536 and piR-51810 in ccRCC tissues may be used as prognostic biomarkers in ccRCC.
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Metadata
Title
Mitochondrial PIWI-interacting RNAs are novel biomarkers for clear cell renal cell carcinoma
Authors
Chenming Zhao
Yuri Tolkach
Doris Schmidt
Marieta Toma
Michael H. Muders
Glen Kristiansen
Stefan C. Müller
Jörg Ellinger
Publication date
01-08-2019
Publisher
Springer Berlin Heidelberg
Published in
World Journal of Urology / Issue 8/2019
Print ISSN: 0724-4983
Electronic ISSN: 1433-8726
DOI
https://doi.org/10.1007/s00345-018-2575-1

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