Prevalence of antibodies against BKPyV subtype I and IV in kidney transplant recipients and in the general Czech population
Language English Country United States Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
30609063
DOI
10.1002/jmv.25388
Knihovny.cz E-resources
- Keywords
- cross-reactivity, polyomavirus BK, polyomavirus JC, transplant patient management, transplantation, virus-like particle (VLP)-based enzyme-linked immunosorbent assay (ELISA),
- MeSH
- Enzyme-Linked Immunosorbent Assay methods MeSH
- Immunoglobulin G blood MeSH
- Humans MeSH
- Polyomavirus Infections epidemiology MeSH
- Transplant Recipients * MeSH
- Antibodies, Viral blood MeSH
- Seroepidemiologic Studies MeSH
- Kidney Transplantation * MeSH
- BK Virus immunology MeSH
- Check Tag
- Humans MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Geographicals
- Czech Republic epidemiology MeSH
- Names of Substances
- Immunoglobulin G MeSH
- Antibodies, Viral MeSH
Active infection with BK polyomavirus (BKPyV) may cause serious complications in transplantation settings. Recently, the level of BKPyV IgG seroreactivity in graft donors has been shown to predict viremia and BKPyV-associated nephropathy in kidney transplant (KTx) recipients. Pretransplantation testing of the donor and recipient BKPyV serostatus could, therefore, identify patients at high risk. For the development of serological immunoassays, antibody response to the predominant BKPyV subtypes (BKPyV-I and BKPyV-IV) was studied using virus-like particle (VLP)-based enzyme-linked immunosorbent assay (ELISA). VLPs made from the capsid protein, VP1, derived from BKPyV-I and BKPyV-IV subtypes were produced using a baculovirus expression system and used as antigens. The tests were used for IgG antibody determination in 50 KTx recipients and 111 healthy blood donors. While 87% of samples reacted with mixed BKPyV-I and BKPyV-IV antigens, only 49% of samples were reactive in both ELISA tests when using BKPyV-I or BKPyV-IV antigens separately. Twenty-seven percent of healthy blood donors and 26% of KTx recipients were reactive only with BKPyV-I, while 9% and 20% were reactive only with BKPyV-IV, respectively. To determine the specificities of the antigens, selected seropositive samples were retested after preadsorption with soluble BKPyV-I, BKPyV-IV, or JC polyomavirus antigens. The experiments confirmed that recombinant VP1 VLP-based ELISAs predominantly detected BKPyV type-specific antibodies. The results imply that anti-BKPyV antibody ELISA tests should contain a mixture of subtype-specific VLP-based antigens instead of antigen derived from the most prevalent BKPyV-I subtype. The tests can be used for serological surveys of BKPyV infection and improved KTx patient management.
Department of Genetics and Microbiology Faculty of Science Charles University Prague Czech Republic
Department of Nephrology Institute for Clinical and Experimental Medicine Prague Czech Republic
References provided by Crossref.org
The role of the DE and EF loop of BKPyV VP1 in the serological cross-reactivity between subtypes
