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Bae H, Na DH, Chang JY, Park KH, Min JW, Ko EJ, Lee H, Yang CW, Chung BH, Oh EJ. Usefulness of BK virus-specific interferon-γ enzyme-linked immunospot assay for predicting the outcome of BK virus infection in kidney transplant recipients. Korean J Intern Med 2021; 36:164-174. [PMID: 32241081 PMCID: PMC7820663 DOI: 10.3904/kjim.2019.339] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 11/15/2019] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND/AIMS To investigate if BK virus (BKV)-specific T cell immunity measured by an interferon-γ enzyme-linked immunospot (ELISPOT) assay can predict the outcome of BK virus infection in kidney transplant recipients (KTRs). METHODS We included 68 KTRs with different viremia status (no viremia [n = 17], BK viremia [n = 27], and cleared viremia [n = 24]) and 44 healthy controls (HCs). The BK viremia group was divided into controller (< 3 months) and noncontroller (> 3 months) according to sustained duration of BKV infection. We compared BKV-ELISPOT results against five BKV peptides (large tumor antigen [LT], St, VP1-3). RESULTS BKV-ELISPOT results were higher in three KTRs groups with different BKV infection status than the HCs group (p < 0.05). In KTR groups, they were higher in cleared viremia group than no viremia or BK viremia group. Within the BK viremia group, controller group had higher LT-ELISPOT results compared to noncontroller group (p = 0.032). Also, KTRs without BK virus-associated nephropathy (BKVN) had higher LT, St, VP1, and VP2-ELISPOT results than those with BKVN (p < 0.05). CONCLUSION BKV-ELISPOT assay may be effective in predicting clinical outcomes of BKV infection in terms of clearance of BK virus and development of BKVN.
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Affiliation(s)
- Hyunjoo Bae
- Department of Biomedical Science, Graduate School, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Do Hyun Na
- Transplant Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ji-Yeun Chang
- Transplant Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ki Hyun Park
- Department of Biomedical Science, Graduate School, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ji Won Min
- Transplant Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Nephrology, Department of Internal Medicine, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
| | - Eun Jeong Ko
- Transplant Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyeyoung Lee
- Department of Laboratory Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Department of Laboratory Medicine, International St. Mary’s Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea
| | - Chul Woo Yang
- Transplant Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Byung Ha Chung
- Transplant Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Eun-Jee Oh
- Department of Laboratory Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Correspondence to Eun-Jee Oh, M.D. Department of Laboratory Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 06591, Korea Tel: +82-2-2258-1641 Fax: +82-2-2258-1719 E-mail:
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