Abstract
Background
Currently utilized serum tumor markers and fecal immunochemical tests do not have sufficient diagnostic power for colorectal cancer (CRC) due to their low sensitivities. To establish non-invasive urinary protein biomarkers for early CRC diagnosis, we performed stepwise analyses employing urine samples from CRCs and healthy controls (HCs).
Methods
Among 474 urine samples, 363 age- and sex-matched participants (188 HCs, 175 stage 0–III CRCs) were randomly divided into discovery (16 HCs, 16 CRCs), training (110 HCs, 110 CRCs), and validation (62 HCs, 49 CRCs) cohorts.
Results
Of the 23 urinary protein candidates comprehensively identified from mass spectrometry in the discovery cohort, urinary levels of dipeptidase 1 (uDPEP1) and Trefoil factor1 (uTFF1) were the two most significant diagnostic biomarkers for CRC in both training and validation cohorts using enzyme-linked immunosorbent assays. A urinary biomarker panel comprising uDPEP1 and uTFF1 significantly distinguished CRCs from HCs, showing area under the curves of 0.825–0.956 for stage 0–III CRC and 0.792–0.852 for stage 0/I CRC. uDPEP1 and uTFF1 also significantly distinguished colorectal adenoma (CRA) patients from HCs, with uDPEP1 and uTFF1 increasing significantly in the order of HCs, CRA patients, and CRC patients. Moreover, expression levels of DPEP1 and TFF1 were also significantly higher in the serum and tumor tissues of CRC, compared to HCs and normal tissues, respectively.
Conclusions
This study established a promising and non-invasive urinary protein biomarker panel, which enables the early detection of CRC with high sensitivity.
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Acknowledgements
We thank Mao Morimoto for supporting urinary analysis and Chiaki Tsuduki, Miki Shioya and Kana Saji for data management of enrolled patients in this study (Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences).
Funding
This study was funded, in part, by Japan Agency for Medical Research and Development (AMED) under Grant Number JP19lm0203005 (to T. S.), Grant-in-Aid for Research in Nagoya City University Grant Number 2021102 (to T. S.), and the Hori Science and Arts Foundation (to T. S.). The funder played no role in study design, data collection, analysis and interpretation of data, or the writing of this manuscript.
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Okuda, Y., Shimura, T., Abe, Y. et al. Urinary dipeptidase 1 and trefoil factor 1 are promising biomarkers for early diagnosis of colorectal cancer. J Gastroenterol 59, 572–585 (2024). https://doi.org/10.1007/s00535-024-02110-1
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DOI: https://doi.org/10.1007/s00535-024-02110-1