Urinary extracellular vesicles are a novel tool to monitor allograft function in kidney transplantation: A systematic review

Liang Wu*, Karin Boer, Wouter W. Woud, Suwasin Udomkarnjananun, Dennis A. Hesselink, Carla C. Baan

*Corresponding author for this work

Research output: Contribution to journalReview articleAcademicpeer-review

9 Citations (Scopus)
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Extracellular vesicles (EVs) are nanoparticles that transmit molecules from releasing cells to target cells. Recent studies link urinary EVs (uEV) to diverse processes such as infection and rejection after kidney transplantation. This, and the unmet need for biomarkers diagnosing kidney transplant dysfunction, has led to the current high level of interest in uEV. uEV provide non-intru-sive access to local protein, DNA, and RNA analytics without invasive biopsy. To determine the added value of uEV measurements for detecting allograft dysfunction after kidney transplantation, we systematically included all related literature containing directly relevant information, with the addition of indirect evidence regarding urine or kidney injury without transplantation. According to their varying characteristics, uEV markers after transplantation could be categorized into kidney-specific, donor-specific, and immune response-related (IR-) markers. A few convincing studies have shown that kidney-specific markers (PODXL, ion cotransporters, SYT17, NGAL, and CD133) and IR-markers (CD3, multi-mRNA signatures, and viral miRNA) could diagnose rejection, BK virus-associated nephropathy, and calcineurin inhibitor nephrotoxicity after kidney transplantation. In addition, some indirect proof regarding donor-specific markers (donor-derived cell-free DNA) in urine has been demonstrated. Together, this literature review provides directions for exploring novel uEV markers’ profiling complications after kidney transplantation.

Original languageEnglish
Article number10499
Number of pages17
JournalInternational Journal of Molecular Sciences
Issue number19
Publication statusPublished - 28 Sept 2021

Bibliographical note

Funding Information:
This review was funded by China Scholarship Council, grant number 202008430154.

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.


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