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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 PLoS+One
2017 ; 12
(9
): e0184684
Nephropedia Template TP
gab.com Text
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English Wikipedia
ILC2s activated by IL-25 promote antigen-specific Th2 and Th9 functions that
contribute to the control of Trichinella spiralis infection
#MMPMID28898280
Angkasekwinai P
; Sodthawon W
; Jeerawattanawart S
; Hansakon A
; Pattanapanyasat K
; Wang YH
PLoS One
2017[]; 12
(9
): e0184684
PMID28898280
show ga
IL-25, an IL-17 family cytokine, derived from epithelial cells was shown to
regulate Th2- and Th9-type immune responses. We previously reported that IL-25
was important in promoting efficient protective immunity against T. spiralis
infection; however, the cellular targets of IL-25 to elicit type-2 immunity
during infection have not yet been addressed. Here, we investigated
IL-25-responding cells and their involvement in mediating type-2 immune response
during T. spiralis infection. ILC2 and CD4+ Th2 cells residing in the
gastrointestinal tract of T. spiralis infected mice were found to express high
levels of surface interleukin-17 receptor B (IL-17RB), a component of the IL-25
receptor. Following T. spiralis infection, activated ILC2s upregulated surface
MHCII expression and enhanced capacity of effector T helper cell in producing
antigen-specific Th2 and Th9 cytokines through MHCII-dependent interactions.
Reciprocally, lack of CD4+ T helper cells impaired ILC2 function to produce type
2-associated cytokines in responding to IL-25 during T. spiralis infection.
Furthermore, mice deficient in IL-17RB showed markedly reduced ILC2 numbers and
antigen-specific Th2 and Th9 cytokine production during T. spiralis infection.
The Il17rb-/- mice failed to mount effective antigen specific Th2 and Th9
functions resulting in diminished goblet cell and mast cell responses, leading to
delayed worm expulsion in the intestines and muscles. Thus, our data indicated
that ILC2s and CD4+ Th2 cells are the predominant cellular targets of IL-25
following T. spiralis infection and their collaborative interactions may play a
key role in mounting effective antigen-specific Th2 and Th9 cytokine responses
against T. spiralis infection.