Assessing agonistic potential of a candidate therapeutic anti-IL21R antibody.

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Assessing agonistic potential of a candidate therapeutic anti-IL21R antibody.

Guo, Y., Hill, A.A., Ramsey, R.C., Immermann, F.W., Corcoran, C., Young, D., Lavallie, E.R., Ryan, M., Bouchard, T., Pfeifer, R., Warner, G., Bologna, M., Bloom, L., O'Toole, M.

Journal		J Transl Med.
Species
Analytes Measured		IL-10 , IL-12 p70 , IL-13 , IL-2 , IL-4 , IL-5 , IL-6 , IL-8 , MCP-1
Matrix Tested		Peripheral blood mononuclear cell (PBMC) culture supernatants

Year		2010
Volume		8
Page Numbers
Application		Cytokines and Chemokines

Abstract

BACKGROUND: Selective neutralization of the IL21/IL21R signaling pathway is a promising approach for the treatment of a variety of autoimmune diseases. Ab-01 is a human neutralizing anti-IL21R antibody. In order to ensure that the activities of Ab-01 are restricted to neutralization even under in vitro cross-linking and in vivo conditions, a comprehensive assessment of agonistic potential of Ab-01 was undertaken.

METHODS: In vitro antibody cross-linking and cell culture protocols reported for studies with a human agonistic antibody, TGN1412, were followed for Ab-01. rhIL21, the agonist ligand of the targeted receptor, and cross-linked anti-CD28 were used as positive controls for signal transduction. In vivo agonistic potential of Ab-01 was assessed by measuring expression levels of cytokine storm-associated and IL21 pathway genes in blood of cynomolgus monkeys before and after IV administration of Ab-01.

RESULTS: Using a comprehensive set of assays that detected multiple activation signals in the presence of the positive control agonists, in vitro Ab-01-dependent activation was not detected in either PBMCs or the rhIL21-responsive cell line Daudi. Furthermore, no difference in gene expression levels was detected in blood before and after in vivo Ab-01 dosing of cynomolgus monkeys.

CONCLUSIONS: Despite efforts to intentionally force an agonistic signal from Ab-01, none could be detected.

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V-PLEX Chemokine Panel 1 (human) Gen. B Kit Eotaxin, Eotaxin-3, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC \| Human Multiplex
V-PLEX Cytokine Panel 1 NHP Kit GM-CSF, IL-5, IL-7, IL-12/IL-23p40, IL-15, IL-16, IL-17A, TNF-β, VEGF-A \| Non-human primate Multiplex
V-PLEX Plus Cytokine Panel 1 NHP Kit GM-CSF, IL-5, IL-7, IL-12/IL-23p40, IL-15, IL-16, IL-17A, TNF-β, VEGF-A \| Non-human primate Multiplex
V-PLEX Human MCP-1 Gen. B Kit MCP-1 \| Human Singleplex
V-PLEX NHP IL-5 Kit IL-5 \| Non-human primate Singleplex
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 NHP IL-10 Kit IL-10 \| Non-human primate Singleplex
V-PLEX Plus Chemokine Panel 1 (human) Gen. B Kit Eotaxin, Eotaxin-3, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC \| Human Multiplex
V-PLEX Plus Human MCP-1 Gen. B Kit MCP-1 \| Human Singleplex
V-PLEX Plus NHP IL-5 Kit IL-5 \| Non-human primate Singleplex
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 NHP IL-10 Kit IL-10 \| Non-human primate Singleplex
V-PLEX Plus Viral Panel 1 Human Kit IL-1β, IL-6, IL-8, TNF-α \| Human Multiplex
V-PLEX Plus Viral Panel 1 NHP Kit IL-1β, IL-6, IL-8 \| Non-human primate Multiplex
V-PLEX Plus Viral Panel 2 Human Kit IFN-γ, IL-1β, IL-4, IL-6, IL-8, IL-10, TNF-α \| Human Multiplex
V-PLEX Plus Viral Panel 2 NHP Kit IFN-γ, IL-1β, IL-6, IL-8, IL-10 \| Non-human primate Multiplex
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
V-PLEX Viral Panel 1 Human Kit IL-1β, IL-6, IL-8, TNF-α \| Human Multiplex
V-PLEX Viral Panel 1 NHP Kit IL-1β, IL-6, IL-8 \| Non-human primate Multiplex
V-PLEX Viral Panel 2 Human Kit IFN-γ, IL-1β, IL-4, IL-6, IL-8, IL-10, TNF-α \| Human Multiplex
V-PLEX Viral Panel 2 NHP Kit IFN-γ, IL-1β, IL-6, IL-8, IL-10 \| Non-human primate Multiplex
V-PLEX Plus Human IL-4 Kit IL-4 \| Human Singleplex
V-PLEX Human IL-4 Kit IL-4 \| Human Singleplex
V-PLEX Human IL-8 Kit IL-8 \| Human Singleplex
V-PLEX Plus Human IL-8 Kit IL-8 \| Human Singleplex
V-PLEX Plus Human IL-6 Kit IL-6 \| Human Singleplex
V-PLEX Human IL-6 Kit IL-6 \| Human Singleplex
V-PLEX Human IL-10 Kit IL-10 \| Human Singleplex
V-PLEX Plus Human IL-10 Kit IL-10 \| Human Singleplex
V-PLEX Plus Human IL-5 Kit IL-5 \| Human Singleplex
V-PLEX Human IL-5 Kit IL-5 \| Human Singleplex
V-PLEX Plus Human IL-13 Kit IL-13 \| Human Singleplex
V-PLEX Human IL-13 Kit IL-13 \| Human Singleplex
V-PLEX Human IL-12p70 Kit IL-12p70 \| Human Singleplex
V-PLEX Plus Human IL-12p70 Kit IL-12p70 \| Human 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 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 Human Proinflam. Panel II (4-Plex) IL-1β, IL-6, IL-8, TNF-α \| Human Multiplex
V-PLEX Plus Human Proinflam. Panel I (4-Plex) IFN-γ, IL-1β, IL-6, TNF-α \| Human Multiplex
V-PLEX Plus Cytokine Panel 1 Human Kit GM-CSF, IL-1α, IL-5, IL-7, IL-12/IL-23p40, IL-15, IL-16, IL-17A, TNF-β, VEGF-A \| Human Multiplex
V-PLEX Human Proinflammatory Panel II (4-Plex) IL-1β, IL-6, IL-8, TNF-α \| Human Multiplex
V-PLEX Human Proinflammatory Panel I (4-Plex) IFN-γ, IL-1β, IL-6, TNF-α \| Human Multiplex
V-PLEX Cytokine Panel 1 Human Kit GM-CSF, IL-1α, IL-5, IL-7, IL-12/IL-23p40, IL-15, IL-16, IL-17A, TNF-β, VEGF-A \| Human Multiplex
V-PLEX Plus NHP IL-2 Kit IL-2 \| Non-human primate Singleplex
V-PLEX Plus Human IL-2 Kit IL-2 \| Human Singleplex
V-PLEX NHP IL-2 Kit IL-2 \| Non-human primate Singleplex
V-PLEX Human IL-2 Kit IL-2 \| Human Singleplex
R-PLEX Rabbit IL-6 Assay IL-6 \| Rabbit Singleplex
R-PLEX Rabbit IL-6 Antibody Set IL-6 \| Rabbit
U-PLEX Biomarker Group 1 (NHP) Assays CTACK, ENA-78, Eotaxin, Eotaxin-2, Eotaxin-3, FLT3L, Fractalkine, G-CSF, GM-CSF, GRO-α, I-309, IFN-α2a, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17B, IL-17C, IL-17D, IL-17F, IL-18, IL-22, IL-23, IP-10, I-TAC, MCP-1, MCP-2, MCP-4, M-CSF, MDC, MIF, MIP-1α, MIP-1β, MIP-3α, MIP-3β, MIP-5, SDF-1α, TARC, TNF-α, TNF-β, TPO, TRAIL, VEGF-A, YKL-40 \| Non-human primate Multiplex
U-PLEX Custom Biomarker Group 1 (human) Assays CTACK, ENA-78, Eotaxin, Eotaxin-2, Eotaxin-3, EPO, FLT3L, Fractalkine, G-CSF, GM-CSF, GRO-α, I-309, IFN-α2a, IFN-β, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-2Rα, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17B, IL-17C, IL-17D, IL-17E/IL-25, IL-17F, IL-18, IL-21, IL-22, IL-23, IL-27, IL-29/IFN-λ1, IL-31, IL-33, IP-10, I-TAC, MCP-1, MCP-2, MCP-3, MCP-4, M-CSF, MDC, MIF, MIP-1α, MIP-1β, MIP-3α, MIP-3β, MIP-5, SDF-1α, TARC, TNF-α, TNF-β, TPO, TRAIL, TSLP, VEGF-A, YKL-40 \| Human Multiplex
U-PLEX Custom Biomarker Group 1 (mouse) Assays 6CKine/CCL21, BAFF, BCA-1/BLC, CD40/TNFRSF5, Eotaxin, EPO, GM-CSF, IFN-α, IFN-β, IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17C, IL-17E/IL-25, IL-17F, IL-21, IL-22, IL-23, IL-27p28/IL-30, IL-31, IL-33, IP-10, KC/GRO, MCP-1, MCP-5/CCL12, MDC, MIP-1α, MIP-1β, MIP-2, MIP-3α, MMP-9 (total), NGAL/LCN2, RANTES, SDF-1α, TARC, TNF-α, TNF-RI, VEGF-A \| Mouse Multiplex
U-PLEX Custom Metabolic Group 1 (human) Assays BAFF, BDNF, β-NGF, C-Peptide, CTACK, ENA-78, Eotaxin, Eotaxin-2, Eotaxin-3, EPO, FGF-21, FGF-23, FLT3L, Fractalkine, FSH, G-CSF, Ghrelin (active), Ghrelin (total), GIP (active), GIP (inactive), GIP (total), GLP-1 (active), GLP-1 (inactive), GLP-1 (total), Glucagon, GM-CSF, GRO-α, I-309, IFN-α2a, IFN-β, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-2Rα, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17C, IL-17D, IL-17E/IL-25, IL-17F, IL-18, IL-21, IL-22, IL-23, IL-27, IL-29/IFN-λ1, IL-31, IL-33, Insulin, IP-10, Leptin, Luteinizing Hormone (LH), MCP-1, MCP-2, MCP-4, M-CSF, MDC, MIF, MIP-1α, MIP-5, PP, Proinsulin, PYY (total), SDF-1α, TARC, TNF-α, TNF-β, TPO, TRAIL, TSLP, VEGF-A, YKL-40 \| Human Multiplex
U-PLEX Custom Metabolic Group 1 (mouse) Assays BAFF, BCA-1/BLC, BDNF, CD40/TNFRSF5, C-Peptide, Eotaxin, EPO, FGF-21, Ghrelin (active), Ghrelin (total), GLP-1 (active), GLP-1 (inactive), GLP-1 (total), Glucagon, GM-CSF, IFN-α, IFN-β, IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17C, IL-17E/IL-25, IL-17F, IL-21, IL-22, IL-23, IL-27p28/IL-30, IL-31, IL-33, Insulin, IP-10, KC/GRO, Leptin, MCP-1, MCP-5/CCL12, MDC, MIP-1α, MIP-1β, MIP-2, MIP-3α, MMP-9 (total), PYY (total), RANTES, TARC, TNF-α, VEGF-A \| Mouse Multiplex
U-PLEX Custom Immuno-Oncology Group 1 (human) Assays 4-1BBL/TNFSF9, APRIL/TNFSF13, BAFF-R/TNFRSF13C, BCMA/TNFRSF17, BTLA, CD20, CD27, CD28, CD40/TNFRSF5, CD40L (soluble), CD80/B7-1, CD276/B7-H3, CTACK, CTLA-4, E-Cadherin, ENA-78, Eotaxin, Eotaxin-2, Eotaxin-3, EPO, E-Selectin, Fas (soluble), FasL, FGF (basic), FLT3L, Fractalkine, Galectin-9, G-CSF, GITR/TNFRSF18, GITRL/TNFSF18, GM-CSF, gp130 (soluble), Granzyme A, Granzyme B, GRO-α, HAVCR1/KIM-1, HAVCR2/TIM-3, HVEM/TNFRSF14, I-309, ICOS, ICOS-L/B7-H2, IDO-1, IFN-α2a, IFN-β, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-2Rα, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17C, IL-17D, IL-17E/IL-25, IL-17F, IL-18, IL-21, IL-22, IL-23, IL-27, IL-29/IFN-λ1, IL-31, IL-33, IP-10, I-TAC, LAG3, LIGHT/TNFSF14, MCP-1, MCP-2, MCP-4, M-CSF, MDC, MIF, MIG, MIP-1α, MIP-1β, MIP-5, MMP-1, MMP-2, MMP-7, MMP-8 (total), MMP-9 (total), MMP-10 (total), Nectin-4, OX40/TNFRSF4, PD1 (epitope 1), PD1 (epitope 2), PDGF-B, PD-L1 (epitope 1), PD-L1 (epitope 2), PD-L2, Pentraxin 3, Perforin, PlGF, proMMP-8, proMMP-9, proMMP-10, P-Selectin, RAGE (soluble), RANKL/TNFSF11, RANTES, S100A12, TACI/TNFRSF13B, Tie-2, TIGIT, TLR1, TNF-α, TNF-β, TNF-RI, TNF-RII, TPO, TRAIL, TSLP, VEGF-A, VEGF-D, VEGFR-1/Flt-1, YKL-40 \| Human Multiplex
U-PLEX Alzheimer's Disease Combo 1 (human) Eotaxin, IL-1α, IL-12/IL-23p40, IL-16, IL-17A, MCP-1, MDC, MIF, SDF-1α, YKL-40 \| Human Multiplex
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Assessing agonistic potential of a candidate therapeutic anti-IL21R antibody.

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