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2015 ; 158
(2
): 183-92
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The cation channel Trpv2 is a new suppressor of arthritis severity, joint damage,
and synovial fibroblast invasion
#MMPMID25869297
Laragione T
; Cheng KF
; Tanner MR
; He M
; Beeton C
; Al-Abed Y
; Gulko PS
Clin Immunol
2015[Jun]; 158
(2
): 183-92
PMID25869297
show ga
Little is known about the regulation of arthritis severity and joint damage in
rheumatoid arthritis (RA). Fibroblast-like synoviocytes (FLS) have a central role
in joint damage and express increased levels of the cation channel Trpv2. We
aimed at determining the role of Trpv2 in arthritis. Treatment with
Trpv2-specific agonists decreased the in vitro invasiveness of FLS from RA
patients and arthritic rats and mice. Trpv2 stimulation suppressed IL-1?-induced
expression of MMP-2 and MMP-3. Trpv2 agonists, including the new and more potent
LER13, significantly reduced disease severity in KRN serum- and collagen-induced
arthritis, and reduced histologic joint damage, synovial inflammation, and
synovial blood vessel numbers suggesting anti-angiogenic activity. In this first
in vivo use of Trpv2 agonists we discovered a new central role for Trpv2 in
arthritis. These new compounds have the potential to become new therapies for RA
and other diseases associated with inflammation, invasion, and angiogenesis.