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2016 ; 6
(ä): 33327
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A diverse virome in kidney transplant patients contains multiple viral subtypes
with distinct polymorphisms
#MMPMID27633952
Rani A
; Ranjan R
; McGee HS
; Metwally A
; Hajjiri Z
; Brennan DC
; Finn PW
; Perkins DL
Sci Rep
2016[Sep]; 6
(ä): 33327
PMID27633952
show ga
Recent studies have established that the human urine contains a complex
microbiome, including a virome about which little is known. Following
immunosuppression in kidney transplant patients, BK polyomavirus (BKV) has been
shown to induce nephropathy (BKVN), decreasing graft survival. In this study we
investigated the urine virome profile of BKV+ and BKV- kidney transplant
recipients. Virus-like particles were stained to confirm the presence of VLP in
the urine samples. Metagenomic DNA was purified, and the virome profile was
analyzed using metagenomic shotgun sequencing. While the BK virus was predominant
in the BKV+ group, it was also found in the BKV- group patients. Additional
viruses were also detected in all patients, notably including JC virus (JCV) and
Torque teno virus (TTV) and interestingly, we detected multiple subtypes of the
BKV, JCV and TTV. Analysis of the BKV subtypes showed that nucleotide
polymorphisms were detected in the VP1, VP2 and Large T Antigen proteins,
suggesting potential functional effects for enhanced pathogenicity. Our results
demonstrate a complex urinary virome in kidney transplant patients with multiple
viruses with several distinct subtypes warranting further analysis of virus
subtypes in immunosuppressed hosts.