Pd-1 antagonists and methods of use thereof

A - Human Necessities – 61 – K

Patent

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Details

A61K 38/18 (2006.01) C07K 14/52 (2006.01) C07K 14/705 (2006.01) C07K 14/715 (2006.01) C12N 15/62 (2006.01)

Patent

CA 2735006

Compositions and methods for enhancing and/or prolonging the activation of T cells (i.e., increasing antigen- spe-cific proliferation of T cells, enhancing cytokine production by T cells, stimulating differentiation ad effector functions of T cells and/or promoting T cell survival) or overcoming T cell exhaustion and/or anergy are provided. Suitable compositions include PD--I receptor antagonists that bind to and block the endogenous PD-I receptor without triggering inhibitory signals from PD-I, or bind to and block PD-I receptor ligands and preventing them from interacting with PD-I receptors. Methods for using the PD-I re-ceptor antagonists to enhance immune responses in subjects in need thereof are provided.

L'invention concerne des compositions et des procédés visant à améliorer et/ou prolonger l'activation des lymphocytes T (c'est-à-dire augmenter la prolifération, spécifique de l'antigène, des lymphocytes T, accroître la production de cytokines par les lymphocytes T, stimuler les fonctions effectrices et de différenciation des lymphocytes T et/ou favoriser la survie des lymphocytes T) ou maîtriser leur épuisement et/ou leur anergie. Des compositions appropriées comprennent des antagonistes du récepteur PD-1 qui se lient au récepteur PD-1 endogène et le bloquent sans déclencher de signaux inhibiteurs depuis PD-1, ou se lient aux ligands du récepteur PD-1 et les bloquent et les empêchent d'avoir une interaction avec les récepteurs PD-1. L'invention concerne également des procédés d'utilisation des antagonistes des récepteurs PD-1 visant à accroître des réponses immunes chez sujets en ayant besoin.

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