| Structural highlights
Function
IL1B_HUMAN Produced by activated macrophages, IL-1 stimulates thymocyte proliferation by inducing IL-2 release, B-cell maturation and proliferation, and fibroblast growth factor activity. IL-1 proteins are involved in the inflammatory response, being identified as endogenous pyrogens, and are reported to stimulate the release of prostaglandin and collagenase from synovial cells.[1]
Publication Abstract from PubMed
IL-1 is a key inflammatory and immune mediator in many diseases, including dry-eye disease, and its inhibition is clinically efficacious in rheumatoid arthritis and cryopyrin-associated periodic syndromes. To treat ocular surface disease with a topical biotherapeutic, the uniqueness of the site necessitates consideration of the agent's size, target location, binding kinetics, and thermal stability. Here we chimerized two IL-1 receptor ligands, IL-1beta and IL-1Ra, to create an optimized receptor antagonist, EBI-005, for topical ocular administration. EBI-005 binds its target, IL-1R1, 85-fold more tightly than IL-1Ra, and this increase translates to an approximately 100-fold increase in potency in vivo. EBI-005 preserves the affinity bias of IL-1Ra for IL-1R1 over the decoy receptor (IL-1R2), and, surprisingly, is also more thermally stable than either parental molecule. This rationally designed antagonist represents a unique approach to therapeutic design that can potentially be exploited for other beta-trefoil family proteins in the IL-1 and FGF families.
Design of a superior cytokine antagonist for topical ophthalmic use.,Hou J, Townson SA, Kovalchin JT, Masci A, Kiner O, Shu Y, King BM, Schirmer E, Golden K, Thomas C, Garcia KC, Zarbis-Papastoitsis G, Furfine ES, Barnes TM Proc Natl Acad Sci U S A. 2013 Mar 5;110(10):3913-8. doi:, 10.1073/pnas.1217996110. Epub 2013 Feb 19. PMID:23431173[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Van Damme J, De Ley M, Opdenakker G, Billiau A, De Somer P, Van Beeumen J. Homogeneous interferon-inducing 22K factor is related to endogenous pyrogen and interleukin-1. Nature. 1985 Mar 21-27;314(6008):266-8. PMID:3920526
- ↑ Hou J, Townson SA, Kovalchin JT, Masci A, Kiner O, Shu Y, King BM, Schirmer E, Golden K, Thomas C, Garcia KC, Zarbis-Papastoitsis G, Furfine ES, Barnes TM. Design of a superior cytokine antagonist for topical ophthalmic use. Proc Natl Acad Sci U S A. 2013 Mar 5;110(10):3913-8. doi:, 10.1073/pnas.1217996110. Epub 2013 Feb 19. PMID:23431173 doi:http://dx.doi.org/10.1073/pnas.1217996110
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