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Front Immunol. 2017 Sep 25;8:1121. doi: 10.3389/fimmu.2017.01121. eCollection 2017.

Therapeutic Potential of Shark Anti-ICOSL VNAR Domains is Exemplified in a Murine Model of Autoimmune Non-Infectious Uveitis.

Frontiers in immunology

Marina Kovaleva, Katherine Johnson, John Steven, Caroline J Barelle, Andrew Porter

Affiliations

  1. Elasmogen Ltd., Aberdeen, United Kingdom.
  2. John Walton Muscular Dystrophy Research Centre, Institute of Genetic Medicine, Newcastle University, Newcastle, United Kingdom.
  3. Department of Molecular and Cell Biology, Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom.

PMID: 28993766 PMCID: PMC5622306 DOI: 10.3389/fimmu.2017.01121

Abstract

Induced costimulatory ligand (ICOSL) plays an important role in the activation of T cells through its interaction with the inducible costimulator, ICOS. Suppression of full T cell activation can be achieved by blocking this interaction and has been shown to be an effective means of ameliorating disease in models of autoimmunity and inflammation. In this study, we demonstrated the ability of a novel class of anti-ICOSL antigen-binding single domains derived from sharks (VNARs) to effectively reduce inflammation in a murine model of non-infectious uveitis. In initial selections, specific VNARs that recognized human ICOSL were isolated from an immunized nurse shark phage display library and lead domains were identified following their performance in a series of antigen selectivity and

Keywords: autoimmunity; biologic therapeutics; phage display; shark; single chain binding domain; uveitis; variable domain of shark new antigen receptor

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