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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 Nat+Microbiol
2017 ; 2
(12
): 1586-1591
Nephropedia Template TP
gab.com Text
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English Wikipedia
The major targets of acute norovirus infection are immune cells in the
gut-associated lymphoid tissue
#MMPMID29109476
Grau KR
; Roth AN
; Zhu S
; Hernandez A
; Colliou N
; DiVita BB
; Philip DT
; Riffe C
; Giasson B
; Wallet SM
; Mohamadzadeh M
; Karst SM
Nat Microbiol
2017[Dec]; 2
(12
): 1586-1591
PMID29109476
show ga
Noroviruses are the leading cause of food-borne gastroenteritis outbreaks and
childhood diarrhoea globally, estimated to be responsible for 200,000 deaths in
children each year (1-4) . Thus, reducing norovirus-associated disease is a
critical priority. Development of vaccines and therapeutics has been hindered by
the limited understanding of basic norovirus pathogenesis and cell tropism. While
macrophages, dendritic cells, B cells and stem-cell-derived enteroids can all
support infection of certain noroviruses in vitro (5-7) , efforts to define in
vivo norovirus cell tropism have generated conflicting results. Some studies
detected infected intestinal immune cells (8-12) , other studies detected
epithelial cells (13) , and still others detected immune and epithelial cells
(14-16) . Major limitations of these studies are that they were performed on
tissue sections from immunocompromised or germ-free hosts, chronically infected
hosts where the timing of infection was unknown, or following non-biologically
relevant inoculation routes. Here, we report that the dominant cellular targets
of a murine norovirus inoculated orally into immunocompetent mice are
macrophages, dendritic cells, B cells and T cells in the gut-associated lymphoid
tissue. Importantly, we also demonstrate that a norovirus can infect T cells, a
previously unrecognized target, in vitro. These findings represent the most
extensive analyses to date of in vivo norovirus cell tropism in orally
inoculated, immunocompetent hosts at the peak of acute infection and thus they
significantly advance our basic understanding of norovirus pathogenesis.