Blockade of Toll-like receptor 2 prevents spontaneous cytokine release from rheumatoid arthritis ex vivo synovial explant cultures.

Nic An Ultaigh, S., Saber, T.P., McCormick, J., Connolly, M., Dellacasagrande, J., Keogh, B., McCormack, W., Reilly, M., O'Neill, L.A., McGuirk, P., Fearon, U., Veale, D.J.
Journal   Arthritis Res Ther.
Species  
Analytes Measured   IL-6 , IL-8
Matrix Tested   Peripheral blood mononuclear cell (PBMC) culture supernatants
Year   2011
Volume   13
Page Numbers   R33
Application   Cytokines and Chemokines
Abstract
INTRODUCTION: The aim of this study was to examine the effect of blocking Toll-like receptor 2 (TLR2) in rheumatoid arthritis (RA) synovial cells.

METHODS: RA synovial tissue biopsies, obtained under direct visualization at arthroscopy, were established as synovial explant cultures ex vivo or snap frozen for immunohistology. Mononuclear cell cultures were isolated from peripheral blood and synovial fluid of RA patients. Cultures were incubated with the TLR1/2 ligand, Pam3CSK4 (200 ng, 1 and 10 μg/ml), an anti-TLR2 antibody (OPN301, 1 μg/ml) or an immunoglobulin G (IgG) (1 μg/ml) matched control. The comparative effect of OPN301 and adalimumab (anti-tumour necrosis factor alpha) on spontaneous release of proinflammatory cytokines from RA synovial explants was determined using quantitative cytokine MSD multiplex assays or ELISA. OPN301 penetration into RA synovial tissue explants cultures was assessed by immunohistology.

RESULTS: Pam3CSK4 significantly upregulated interleukin (IL)-6 and IL-8 in RA peripheral blood mononuclear cells (PBMCs), RA synovial fluid mononuclear cells (SFMCs) and RA synovial explant cultures (P < 0.05). OPN301 significantly decreased Pam3CSK4-induced cytokine production of tumour necrosis factor alpha (TNF-α), IL-1β, IL-6, interferon (IFN)-γ and IL-8 compared to IgG control in RA PBMCs and SFMCs cultures (all P < 0.05). OPN301 penetration of RA synovial tissue cultures was detected in the lining layer and perivascular regions. OPN301 significantly decreased spontaneous cytokine production of TNF-α, IL-1β, IFN-γ and IL-8 from RA synovial tissue explant cultures (all P < 0.05). Importantly, the inhibitory effect of OPN on spontaneous cytokine secretion was comparable to inhibition by anti-TNFα monoclonal antibody adalimumab.

CONCLUSIONS: These findings further support targeting TLR2 as a potential therapeutic agent for the treatment of RA.

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Multiplex
V-PLEX NHP Cytokine 24-Plex Kit
Eotaxin-3, GM-CSF, IFN-γ, IL-1β, IL-2, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-10, IL-12/IL-23p40, IL-15, IL-16, IL-17A, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC, TNF-β, VEGF-A | Non-human primate
Multiplex
V-PLEX NHP IL-6 Kit
IL-6 | Non-human primate
Singleplex
V-PLEX NHP IL-8 Kit
IL-8 | Non-human primate
Singleplex
V-PLEX Plus Chemokine Panel 1 NHP Kit
Eotaxin-3, IL-8, IL-8 (HA), IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC | Non-human primate
Multiplex
V-PLEX Plus NHP Cytokine 24-Plex Kit
Eotaxin-3, GM-CSF, IFN-γ, IL-1β, IL-2, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-10, IL-12/IL-23p40, IL-15, IL-16, IL-17A, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC, TNF-β, VEGF-A | Non-human primate
Multiplex
V-PLEX Plus NHP IL-6 Kit
IL-6 | Non-human primate
Singleplex
V-PLEX Plus NHP IL-8 Kit
IL-8 | Non-human primate
Singleplex
V-PLEX Plus Proinflammatory Panel 1 NHP Kit
IFN-γ, IL-1β, IL-2, IL-6, IL-8, IL-10 | Non-human primate
Multiplex
V-PLEX Proinflammatory Panel 1 NHP Kit
IFN-γ, IL-1β, IL-2, IL-6, IL-8, IL-10 | Non-human primate
Multiplex
Human IL-6 Antibody Bulk Product
IL-6
Human IL-8 Antibody Bulk Product
IL-8
Mouse IL-6 Antibody
IL-6
Rat IL-6 Antibody
IL-6
V-PLEX Chemokine Panel 1 Human Kit
Eotaxin, Eotaxin-3, IL-8, IL-8 (HA), IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC | Human
Multiplex
V-PLEX Human Cytokine 30-Plex Kit
Eotaxin, Eotaxin-3, GM-CSF, IFN-γ, IL-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC, TNF-α, TNF-β, VEGF-A | Human
Multiplex
V-PLEX Human IL-6 Kit
IL-6 | Human
Singleplex
V-PLEX Human IL-8 Kit
IL-8 | Human
Singleplex
V-PLEX Human Proinflammatory Panel I (4-Plex)
IFN-γ, IL-1β, IL-6, TNF-α | Human
Multiplex
V-PLEX Human Proinflammatory Panel II (4-Plex)
IL-1β, IL-6, IL-8, TNF-α | Human
Multiplex
V-PLEX Mouse IL-6 Kit
IL-6 | Mouse
Singleplex
V-PLEX Plus Chemokine Panel 1 Human Kit
Eotaxin, Eotaxin-3, IL-8, IL-8 (HA), IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC | Human
Multiplex
V-PLEX Plus Human Cytokine 30-Plex Kit
Eotaxin, Eotaxin-3, GM-CSF, IFN-γ, IL-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-8 (HA), IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC, TNF-α, TNF-β, VEGF-A | Human
Multiplex
V-PLEX Plus Human IL-6 Kit
IL-6 | Human
Singleplex
V-PLEX Plus Human IL-8 Kit
IL-8 | Human
Singleplex
V-PLEX Plus Human Proinflam. Panel I (4-Plex)
IFN-γ, IL-1β, IL-6, TNF-α | Human
Multiplex
V-PLEX Plus Human Proinflam. Panel II (4-Plex)
IL-1β, IL-6, IL-8, TNF-α | Human
Multiplex
V-PLEX Plus Mouse IL-6 Kit
IL-6 | Mouse
Singleplex
V-PLEX Plus Proinflammatory Panel 1 Human Kit
IFN-γ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70, IL-13, TNF-α | Human
Multiplex
V-PLEX Plus Proinflammatory Panel1 Mouse Kit
IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-10, IL-12p70, KC/GRO, TNF-α | Mouse
Multiplex
V-PLEX Plus Rat IL-6 Kit
IL-6 | Rat
Singleplex
V-PLEX Proinflammatory Panel 1 Human Kit
IFN-γ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70, IL-13, TNF-α | Human
Multiplex
V-PLEX Proinflammatory Panel 1 Mouse Kit
IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-10, IL-12p70, KC/GRO, TNF-α | Mouse
Multiplex
V-PLEX Rat IL-6 Kit
IL-6 | Rat
Singleplex
Chemokine Panel 1 Human Control Pack
Eotaxin, Eotaxin-3, IL-8, IP-10, MCP-1, MCP-4, MDC, TARC | Human
Proinflammatory Panel 1 Human Control Pack
IFN-γ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70, IL-13, TNF-α | Human
Proinflammatory Panel 1 Mouse Control Pack
IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-10, IL-12p70, KC/GRO, TNF-α | Mouse
Proinflammatory Panel 1 Rat Control Pack
IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-10, IL-13, KC/GRO, TNF-α | Rat
Human ProInflammatory-4 II Tissue Culture Kit
IL-1β, IL-6, IL-8, TNF-α | Human
Multiplex
Human IL-6 Tissue Culture Kit
IL-6 | Human
Singleplex
Human ProInflammatory 7-Plex Tissue Culture Kit
IFN-γ, IL-1β, IL-6, IL-8, IL-10, IL-12p70, TNF-α | Human
Multiplex
Human ProInflammatory 9-Plex Tissue Culture Kit
GM-CSF, IFN-γ, IL-1β, IL-2, IL-6, IL-8, IL-10, IL-12p70, TNF-α | Human
Multiplex
Human IL-8 Tissue Culture Kit
IL-8 | Human
Singleplex
Human ProInflammatory-4 I Tissue Culture Kit
IFN-γ, IL-1β, IL-6, TNF-α | Human
Multiplex
Human TH1/TH2 10-Plex Tissue Culture Kit
IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-8, IL-10, IL-12p70, IL-13, TNF-α | Human
Multiplex
Canine ProInflammatory Panel 3 Ultra-Sensitive Kit
IL-2, IL-6, IL-8, TNF-α | Canine
Multiplex
MA6000 Rat IL-6 384 Tissue Culture Kit
IL-6 | Rat
Singleplex
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