Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\28402718
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Prion
2017 ; 11
(2
): 98-112
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Prions on the run: How extracellular vesicles serve as delivery vehicles for
self-templating protein aggregates
#MMPMID28402718
Liu S
; Hossinger A
; Göbbels S
; Vorberg IM
Prion
2017[Mar]; 11
(2
): 98-112
PMID28402718
show ga
Extracellular vesicles (EVs) are actively secreted, membrane-bound communication
vehicles that exchange biomolecules between cells. EVs also serve as
dissemination vehicles for pathogens, including prions, proteinaceous infectious
agents that cause transmissible spongiform encephalopathies (TSEs) in mammals.
Increasing evidence accumulates that diverse protein aggregates associated with
common neurodegenerative diseases are packaged into EVs as well. Vesicle-mediated
intercellular transmission of protein aggregates can induce aggregation of
homotypic proteins in acceptor cells and might thereby contribute to disease
progression. Our knowledge of how protein aggregates are sorted into EVs and how
these vesicles adhere to and fuse with target cells is limited. Here we review
how TSE prions exploit EVs for intercellular transmission and compare this to the
transmission behavior of self-templating cytosolic protein aggregates derived
from the yeast prion domain Sup 35 NM. Artificial NM prions are non-toxic to
mammalian cell cultures and do not cause loss-of-function phenotypes.
Importantly, NM particles are also secreted in association with exosomes that
horizontally transmit the prion phenotype to naive bystander cells, a process
that can be monitored with high accuracy by automated high throughput confocal
microscopy. The high abundance of mammalian proteins with amino acid stretches
compositionally similar to yeast prion domains makes the NM cell model an
attractive model to study self-templating and dissemination properties of
proteins with prion-like domains in the mammalian context.