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이진균 (Carolinas HealthCare System) Kimberly Q. McKinney (Carolinas HealthCare System) Antonis J. Pavlopoulos (Carolinas HealthCare System) Meng Niu (Carolinas HealthCare System) 강중원 (Research Institute National Cancer Center) 오재원 (경희대학교) 김광표 (경희대학교) 황선일 (Carolinas HealthCare System)
저널정보
한국분자세포생물학회 Molecules and Cells Molecules and Cells 제41권 제3호
발행연도
2018.3
수록면
179 - 187 (9page)
DOI
10.14348/molcells.2018.2110

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Proteomic analysis of extracellular vesicles (EVs) from biological fluid is a powerful approach to discover potential biomarkers for human diseases including cancers, as EV secreted to biological fluids are originated from the affected tissue. In order to investigate significant molecules related to the pathogenesis of bladder cancer, EVs were isolated from patient urine which was analyzed by mass spectrometry based proteomics. Comparison of the EV proteome to the whole urine proteome demonstrated an increased number of protein identification in EV. Comparative MS analyses of urinary EV from control subjects and bladder cancer patients identified a total of 1,222 proteins. Statistical analyses provided 56 proteins significantly increased in bladder cancer urine, including proteins for which expression levels varied by cancer stage (P-value < 0.05). While urine represents a valuable, non-invasive specimen for biomarker discovery in urologic cancers, there is a high degree of intra- and inter-individual variability in urine samples. The enrichment of urinary EV demonstrated its capability and applicability of providing a focused identifi-cation of biologically relevant proteins in urological diseases.

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