MicroRNA miR-J1-5p as a potential biomarker for JC virus infection in the gastrointestinal tract

Link A, Balaguer F, Nagasaka T, Boland CR, Goel A (2014)

Publication Language: English

Publication Type: Journal article

Publication year: 2014

Journal

PLoS ONE Public Library of Science

Book Volume: 9

Article Number: e100036

Journal Issue: 6

DOI: 10.1371/journal.pone.0100036

Abstract

Introduction: JC virus (JCV), a human polyomavirus that causes progressive multifocal leukoencephalopathy (PML), has been linked to colorectal cancer (CRC). However, determination of JCV infection and its role in carcinogenesis has been challenging, highlighting the need for better diagnostic strategies for this virus. JCV-specific microRNAs (miRNAs) were identified and shown to negatively regulate oncogenic JCV T-Ag. Herein, we determined the pattern of JCV miRNA expression in clinical specimens from healthy subjects and CRC patients. Material and Methods: JCV miRNA expression was validated in CRC cell lines transfected with the JCV T-Ag. Results were confirmed using CRC tissues that were expressed T-Ag. Expression of JCV-specific miR-J1-5p was measured in fresh stool samples from healthy volunteers, and samples from fecal occult blood test kits from healthy subject, and patients with colorectal neoplasms. Results: JCV miR-J1-5p was detected in JCV-transfected, but not vector-transfected, CRC cells, and was stable between cell passages. MiR-J1-5p was present in all six JCV T-Ag+ CRC samples. Surprisingly, JCV miRNA was detectable in all normal tissues, but the expression was much lower in CRC tissues. Similarly, miR-J1-5p expression was present in all fecal samples, but expression was lower in CRCs compared to controls or adenoma patients. Conclusion: JC virus-specific miR-J1-5p miRNA is a potential biomarker for viral infection, and the lower expression in patients with colonic neoplasia highlights its biological role regulating oncogenic T-Ag expression in CRC. Impact: JCV-specific miRNA is a candidate for the development of a non-invasive screening test, as well as therapeutic intervention for JCV-associated diseases. © 2014 Link et al.

Authors with CRIS profile

Alexander Link

Involved external institutions

Baylor Scott & White Research Institute (BSWRI) US United States (USA) (US) Okayama University / 岡山大学 JP Japan (JP)

How to cite

APA:

Link, A., Balaguer, F., Nagasaka, T., Boland, C.R., & Goel, A. (2014). MicroRNA miR-J1-5p as a potential biomarker for JC virus infection in the gastrointestinal tract. PLoS ONE, 9(6). https://doi.org/10.1371/journal.pone.0100036

MLA:

Link, Alexander, et al. "MicroRNA miR-J1-5p as a potential biomarker for JC virus infection in the gastrointestinal tract." PLoS ONE 9.6 (2014).

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