期刊
ARCHIVES OF VIROLOGY
卷 166, 期 3, 页码 841-851出版社
SPRINGER WIEN
DOI: 10.1007/s00705-020-04945-4
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资金
- National Agriculture and Food Research Organization
A simplified inverse PCR method was established to diagnose EBL, demonstrating high sensitivity and specificity in detecting clonal expansion of infected cells. This method has the potential to efficiently determine virus-dependent bovine leukemia and enhance EBL diagnosis following further clinical investigations.
Enzootic bovine leukosis (EBL) is a malignant B-cell lymphoma of cattle caused by infection with bovine leukemia virus (BLV). It is defined by clonal and neoplastic expansion of BLV-infected B cells. Currently, multiple examinations are able to comprehensively diagnose this condition. Inverse polymerase chain reaction (PCR) is a useful method to determine retrovirus integration sites. Here, we established a simplified inverse PCR method, involving the evaluation of clonality and similarity of BLV integration sites, to clinically diagnose EBL, and we also assessed its reliability. We found that the novel BLV inverse PCR could detect clonal expansion of infected cells even if they constituted only 5% of the total number of cells, while not amplifying any fragments from BLV-uninfected cells, thus confirming its sufficient sensitivity and specificity for use in EBL diagnosis. Furthermore, 50 clinical cases of bovine leukemia were analyzed using BLV inverse PCR and other PCR-based methods, wherein our method most efficiently determined virus-dependent bovine leukemia, including unidentified clinical cases observed in a previous report. Following further clinical investigations to enhance its reliability, the proposed BLV inverse PCR method has the potential to be applied to EBL diagnosis.
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