Cited by 203Extracellular vesicles in diseaseMicroRNA in disease regulationCircular RNAs in diseases

Circulating Exosomal MicroRNA-21 as a Biomarker in Each Tumor Stage of Colorectal Cancer

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Tsukamoto, Mitsuo, Iinuma, Hisae, Yagi, Takahiro, Matsuda, Keiji, Hashiguchi, Yojiro·2017·Oncology

Abstract

Objective: We clarified the predictive and prognostic value of circulating plasma exosomal microRNA-21 (miR-21) in each TNM stage of colorectal cancer (CRC) patients. Methods: The microRNA (miRNA) profiles of the plasma exosomes, primary tumor tissues, and liver metastasis tissues from the same CRC patients were examined using a microarray. For validation analysis, the plasma exosome samples from 326 CRC patients were measured by TaqMan miRNA assays. Results: In the miRNA microarray analyses, miR-21 showed the highest upregulation in exosomes, primary tumor tissues, and liver metastasis tissues. Significant correlations were demonstrated between exosomal miR-21 and tissue miR-21 levels. As for the relationship to the pathological condition, exosomal miR-21 showed a significant association with liver metastasis and TNM stage. The overall survival (OS) rates and disease-free survival (DFS) rates in high-exosomal-miR-21 patients were significantly worse than those in low-miR-21 patients. Exosomal miR-21 levels were an independent prognostic factor for OS and DFS in CRC patients with TNM stage II or III, and for OS in patients with TNM stage IV. Conclusion: Plasma exosomal miR-21 levels are a useful biomarker for the prediction of recurrence and poor prognosis in CRC patients with TNM stage II, III, or IV.

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  • miR-21 has been demonstrated to be packaged within exosomes and released from different cancer types.

    “Moreover, miR-21 has been demonstrated to be packaged within exosomes and released from different cancer types (51–54).”

    From Potential Therapeutic Effects of Exosomes Packed With a miR-21-Sponge Construct in a Rat Model of Glioblastoma (2019) · cites this paper as [53]

    The Results in the indexed Japanese thesis summary (page unavailable) report miR-21 in plasma exosomes from colorectal cancer patients. The discussion says its correlation with tumor-tissue miR-21 suggests a possible tumor origin, but does not demonstrate release from the tumors. The copy addresses colorectal cancer, not different cancer types. (LLM, conf=0.86)

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Authors
Tsukamoto, M., Iinuma, H., Yagi, T., Matsuda, K., & Hashiguchi, Y.
Affiliations
Teikyo University (JP)
Venue
Oncology
Publisher
S. Karger AG
Published
2017
Volume
92
Issue
6
Pages
360-370
ISSN
  • 0030-2414 (ISSN-L)
  • 1423-0232
OpenAlex
W2605003516
Cited by
203
References
36
Citations by year
2026: 8 · 2025: 10 · 2024: 11 · 2023: 26 · 2022: 22 · 2021: 42 · 2020: 31 · 2019: 27 · 2018: 20 · 2017: 6
FWCI
9.39
Type
journal article
Language
en
Open access
Locations
  • Oncology (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Repositories DataBase (IRDB) (submittedVersion, cc-by-nc-nd)
Funders
Japan Society for the Promotion of Science (17K10608, 15K10150, 17K10655)
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 › Molecular Biology › Circular RNAs in diseases
Keywords
colorectal cancer, circulating exosomes, plasma biomarkers, TNM stage, liver metastasis, prognostic factors, overall survival, disease-free survival, tumor recurrence prediction
MeSH terms
Humans, Liver Neoplasms, Neoplasm Recurrence, Local, Neoplasm Staging, Prognosis, Tumor Cells, Cultured, Biomarkers, Tumor, Colorectal Neoplasms, Gene Expression Regulation, Neoplastic, Survival Rate, MicroRNAs, Microarray Analysis

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