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KMID : 1011820160570000052
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Investigative and Clinical Urology
2016 Volume.57 No. 0 p.52 ~ p.59
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Aberrantly expressed microRNAs in the context of bladder tumorigenesis
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Lee Jong-Young
Ryu Dong-Sung
Kim Seong-Jin
Kim Wun-Jae
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Abstract
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MicroRNAs (miRNAs), small noncoding RNAs 19?22 nucleotides in length, play a major role in negative regulation of gene expression at the posttranscriptional level. Several miRNAs act as tumor suppressors or oncogenes that control cell differentiation, proliferation, apoptosis, or angiogenesis during tumorigenesis. To date, 19 research groups have published large-scale expression profiles that identified 261 miRNAs differentially expressed in bladder cancer, of which 76 were confirmed to have consistent expression patterns by two or more groups. These consistently expressed miRNAs participated in regulation of multiple biological processes and factors, including axon guidance, cancer-associated proteoglycans, and the ErbB and transforming growth factorbeta signaling pathways. Because miRNAs can be released from cancer cells into urine via secreted particles, we propose that miRNAs differentially expressed between tissue and urine could serve as predictors of bladder cancer, and could thus be exploited for noninvasive diagnosis.
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KEYWORD
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MicroRNAs, Neoplasms, Urinary bladder neoplasms
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