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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Virology
2016 ; 492
(ä): 66-72
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Caveolin- and clathrin-independent entry of BKPyV into primary human proximal
tubule epithelial cells
#MMPMID26901486
Zhao L
; Marciano AT
; Rivet CR
; Imperiale MJ
Virology
2016[May]; 492
(ä): 66-72
PMID26901486
show ga
BK polyomavirus (BKPyV) is a human pathogen that causes polyomavirus-associated
nephropathy and hemorrhagic cystitis in transplant patients. Gangliosides and
caveolin proteins have previously been reported to be required for BKPyV
infection in animal cell models. Recent studies from our lab and others, however,
have indicated that the identity of the cells used for infection studies can
greatly influence the behavior of the virus. We therefore wished to re-examine
BKPyV entry in a physiologically relevant primary cell culture model, human renal
proximal tubule epithelial cells. Using siRNA knockdowns, we interfered with
expression of UDP-glucose ceramide glucosyltransferase (UGCG), and the endocytic
vesicle coat proteins caveolin 1, caveolin 2, and clathrin heavy chain. The
results demonstrate that while BKPyV does require gangliosides for efficient
infection, it can enter its natural host cells via a caveolin- and
clathrin-independent pathway. The results emphasize the importance of studying
viruses in a relevant cell culture model.