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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 J+Virol
2009 ; 83
(20
): 10406-16
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Cell entry of Borna disease virus follows a clathrin-mediated endocytosis pathway
that requires Rab5 and microtubules
#MMPMID19656886
Clemente R
; de la Torre JC
J Virol
2009[Oct]; 83
(20
): 10406-16
PMID19656886
show ga
Borna disease virus (BDV), the prototypic member of the Bornaviridae family
within the order Mononegavirales, exhibits high neurotropism and provides an
important and unique experimental model system for studying virus-cell
interactions within the central nervous system. BDV surface glycoprotein (G)
plays a critical role in virus cell entry via receptor-mediated endocytosis, and
therefore, G is a critical determinant of virus tissue and cell tropism. However,
the specific cell pathways involved in BDV cell entry have not been determined.
Here, we provide evidence that BDV uses a clathrin-mediated, caveola-independent
cell entry pathway. We also show that BDV G-mediated fusion takes place at an
optimal pH of 6.0 to 6.2, corresponding to an early-endosome compartment.
Consistent with this finding, BDV cell entry was Rab5 dependent but Rab7
independent and exhibited rapid fusion kinetics. Our results also uncovered a key
role for microtubules in BDV cell entry, whereas the integrity and dynamics of
actin cytoskeleton were not required for efficient cell entry of BDV.