Cited by 810Extracellular vesicles in diseaseMicroRNA in disease regulationCancer-related molecular mechanisms research

Circulating Exosomal microRNAs as Biomarkers of Colon Cancer

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Ogata-Kawata, Hiroko, Izumiya, Masashi, Kurioka, Daisuke, Honma, Yoshitaka, Yamada, Yasuhide, Furuta, Koh, Gunji, Toshiaki, Ohta, Hideki +7 more·2014·PLoS ONE

Abstract

PURPOSE: Exosomal microRNAs (miRNAs) have been attracting major interest as potential diagnostic biomarkers of cancer. The aim of this study was to characterize the miRNA profiles of serum exosomes and to identify those that are altered in colorectal cancer (CRC). To evaluate their use as diagnostic biomarkers, the relationship between specific exosomal miRNA levels and pathological changes of patients, including disease stage and tumor resection, was examined. EXPERIMENTAL DESIGN: Microarray analyses of miRNAs in exosome-enriched fractions of serum samples from 88 primary CRC patients and 11 healthy controls were performed. The expression levels of miRNAs in the culture medium of five colon cancer cell lines were also compared with those in the culture medium of a normal colon-derived cell line. The expression profiles of miRNAs that were differentially expressed between CRC and control sample sets were verified using 29 paired samples from post-tumor resection patients. The sensitivities of selected miRNAs as biomarkers of CRC were evaluated and compared with those of known tumor markers (CA19-9 and CEA) using a receiver operating characteristic analysis. The expression levels of selected miRNAs were also validated by quantitative real-time RT-PCR analyses of an independent set of 13 CRC patients. RESULTS: The serum exosomal levels of seven miRNAs (let-7a, miR-1229, miR-1246, miR-150, miR-21, miR-223, and miR-23a) were significantly higher in primary CRC patients, even those with early stage disease, than in healthy controls, and were significantly down-regulated after surgical resection of tumors. These miRNAs were also secreted at significantly higher levels by colon cancer cell lines than by a normal colon-derived cell line. The high sensitivities of the seven selected exosomal miRNAs were confirmed by a receiver operating characteristic analysis. CONCLUSION: Exosomal miRNA signatures appear to mirror pathological changes of CRC patients and several miRNAs are promising biomarkers for non-invasive diagnosis of the disease.

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Authors
Ogata-Kawata, H., Izumiya, M., Kurioka, D., Honma, Y., Yamada, Y., Furuta, K., Gunji, T., Ohta, H., Okamoto, H., Sonoda, H., Watanabe, M., Nakagama, H., Yokota, J., Kohno, T., & Tsuchiya, N.
Affiliations
  • University of Tokyo Hospital (JP)
  • Yokohama National University (JP)
  • National Cancer Center Hospital (JP)
  • NTT Medical Center (JP)
  • Shionogi (Japan) (JP)
  • National Cancer Center Research Institute (JP)
  • Institute of Predictive and Personalized Medicine of Cancer (ES)
Corresponding author
Tsuchiya, Naoto
Venue
PLoS ONE
Published
2014-04-04
Volume
9
Issue
4
Pages
e92921
ISSN
1932-6203 (ISSN-L)
OpenAlex
W1992970284
Cited by
809
References
37
Citations by year
2026: 28 · 2025: 37 · 2024: 51 · 2023: 45 · 2022: 76 · 2021: 96 · 2020: 89 · 2019: 81 · 2018: 76 · 2017: 76 · 2016: 78 · 2015: 60 · 2014: 15
FWCI
31.32
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • National Institute of Biomedical Innovation
  • Japan Society for the Promotion of Science (23300359, 24790683)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer-related molecular mechanisms research
Keywords
exosomal microRNAs, colorectal cancer, serum exosomes, diagnostic biomarkers, non-invasive diagnosis, miR-21, miR-223, miR-23a, miR-150, miR-1246, let-7a, tumor resection, CA19-9, carcinoembryonic antigen
MeSH terms
Adult, Aged, Colonic Neoplasms, Female, Humans, Male, Middle Aged, Tumor Cells, Cultured, Biomarkers, Tumor, Gene Expression Regulation, Neoplastic, Case-Control Studies, HT29 Cells, Gene Expression Profiling, MicroRNAs, HCT116 Cells, Cell Line, Tumor, Microarray Analysis, Exosomes

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