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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
2018 ; 13
(2
): e0192704
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Immune checkpoint inhibitor PD-1 pathway is down-regulated in synovium at various
stages of rheumatoid arthritis disease progression
#MMPMID29489833
Guo Y
; Walsh AM
; Canavan M
; Wechalekar MD
; Cole S
; Yin X
; Scott B
; Loza M
; Orr C
; McGarry T
; Bombardieri M
; Humby F
; Proudman SM
; Pitzalis C
; Smith MD
; Friedman JR
; Anderson I
; Madakamutil L
; Veale DJ
; Fearon U
; Nagpal S
PLoS One
2018[]; 13
(2
): e0192704
PMID29489833
show ga
Immune checkpoint blockade with therapeutic anti-cytotoxic T
lymphocyte-associated antigen (CTLA)-4 (Ipilimumab) and anti-programmed death
(PD)-1 (Nivolumab and Pembrolizumab) antibodies alone or in combination has shown
remarkable efficacy in multiple cancer types, concomitant with immune-related
adverse events, including arthralgia and inflammatory arthritis (IA) in some
patients. Herein, using Nivolumab (anti-PD-1 antagonist)-responsive genes along
with transcriptomics of synovial tissue from multiple stages of rheumatoid
arthritis (RA) disease progression, we have interrogated the activity status of
PD-1 pathway during RA development. We demonstrate that the expression of PD-1
was increased in early and established RA synovial tissue compared to normal and
OA synovium, whereas that of its ligands, programmed death ligand-1 (PD-L1) and
PD-L2, was increased at all the stages of RA disease progression, namely
arthralgia, IA/undifferentiated arthritis, early RA and established RA. Further,
we show that RA patients expressed PD-1 on a majority of synovial tissue
infiltrating CD4+ and CD8+ T cells. Moreover, enrichment of Nivolumab gene
signature was observed in IA and RA, indicating that the PD-1 pathway was
downregulated during RA disease progression. Furthermore, serum soluble (s) PD-1
levels were increased in autoantibody positive early RA patients. Interestingly,
most of the early RA synovium tissue sections showed negative PD-L1 staining by
immunohistochemistry. Therefore, downregulation in PD-1 inhibitory signaling in
RA could be attributed to increased serum sPD-1 and decreased synovial tissue
PD-L1 levels. Taken together, these data suggest that agonistic PD1
antibody-based therapeutics may show efficacy in RA treatment and interception.
|*Down-Regulation
[MESH]
|Arthritis, Rheumatoid/*pathology
[MESH]
|Disease Progression
[MESH]
|Female
[MESH]
|Humans
[MESH]
|Male
[MESH]
|Programmed Cell Death 1 Receptor/*metabolism
[MESH]