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2015 ; 45
(4
): 1019-29
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English Wikipedia
Differential control of CD4(+) T-cell subsets by the PD-1/PD-L1 axis in a mouse
model of allergic asthma
#MMPMID25630305
McAlees JW
; Lajoie S
; Dienger K
; Sproles AA
; Richgels PK
; Yang Y
; Khodoun M
; Azuma M
; Yagita H
; Fulkerson PC
; Wills-Karp M
; Lewkowich IP
Eur J Immunol
2015[Apr]; 45
(4
): 1019-29
PMID25630305
show ga
Studies examining the role of PD-1 family members in allergic asthma have yielded
conflicting results. Using a mouse model of allergic asthma, we demonstrate that
blockade of PD-1/PD-L1 has distinct influences on different CD4(+) T-cell
subsets. PD-1/PD-L1 blockade enhances airway hyperreactivity (AHR), not by
altering the magnitude of the underlying Th2-type immune response, but by
allowing the development of a concomitant Th17-type immune response. Supporting
differential CD4(+) T-cell responsiveness to PD-1-mediated inhibition, naïve
PD-1(-/-) mice displayed elevated Th1 and Th17 levels, but diminished Th2
cytokine levels, and ligation of PD-1 in WT cells limited cytokine production by
in vitro polarized Th1 and Th17 cells, but slightly enhanced cytokine production
by in vitro polarized Th2 cells. Furthermore, PD-1 ligation enhanced Th2 cytokine
production by naïve T cells cultured under nonpolarizing conditions. These data
demonstrate that different CD4(+) T-cell subsets respond differentially to PD-1
ligation and may explain some of the variable results observed in control of
allergic asthma by the PD-1 family members. As the PD-1/PD-L1 axis limits asthma
severity by constraining Th17 cell activity, this suggests that severe allergic
asthma may be associated with a defective PD-1/PD-L1 regulatory axis in some
individuals.
|Animals
[MESH]
|Antibodies, Monoclonal/pharmacology
[MESH]
|Asthma/*immunology
[MESH]
|B7-H1 Antigen/*immunology
[MESH]
|Cell Differentiation/immunology
[MESH]
|Cell Movement/immunology
[MESH]
|Cells, Cultured
[MESH]
|Cytokines/biosynthesis
[MESH]
|Disease Models, Animal
[MESH]
|Interleukin-12/blood
[MESH]
|Lung/cytology
[MESH]
|Mice
[MESH]
|Mice, Inbred C3H
[MESH]
|Mice, Inbred C57BL
[MESH]
|Mice, Knockout
[MESH]
|Programmed Cell Death 1 Ligand 2 Protein/antagonists & inhibitors
[MESH]
|Programmed Cell Death 1 Receptor/genetics/*immunology
[MESH]