Abstract:
:BK polyomavirus (family Polyomaviridae) may cause hemorrhagic cystitis (BKV-HC) in hematopoietic stem cell transplant recipients. Eleven complete BKV genomes (GenBank accession numbers: JN192431-JN192441) were sequenced from urine samples of allogenic hematopoietic stem cell transplant recipients and compared to complete BKV genomes in the published literature. Of the 11 isolates, seven (64%) were subgroup Ib-1, three (27%) isolates belonged to subgroup Ib-2 and a single isolate belonged to subtype III. The analysis of single-nucleotide polymorphisms in this study showed that isolates could be subclassified into subtypes I-IV and subgroups Ib-1 and Ib-2 on the basis of VP1 of the first part of the Large T-antigen (LTag). The non-coding control region (NCCR) of the 11 isolates was also sequenced. These sequences showed that there was consistent sequence homology within subgroups Ib-1 and Ib-2. Two new mutations were described in the isolates, G→C at O(84) in isolate SJH-LG-310, and a deletion at R(2-7) in isolate SJH-LG-309. No known transcription factor is thought to be present at the site of either of these mutations. There were no rearrangements seen in isolates and this may be because the patients were not followed up over time. There were five nucleotide positions at which subgroup Ib-1 isolated differed from subgroup Ib-2 isolates in the NCCR sequence, O(41) , P(18) , P(31) , R(4) , and S(18) . The mutation O(41) is present in the promoter granulocyte/macrophage stimulating factor) gene and the P(31) mutation is present in the NF-1 gene.
journal_name
J Med Viroljournal_title
Journal of medical virologyauthors
Drew RJ,Walsh A,Laoi BN,Crowley Bdoi
10.1002/jmv.23240subject
Has Abstractpub_date
2012-07-01 00:00:00pages
1037-48issue
7eissn
0146-6615issn
1096-9071journal_volume
84pub_type
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