Disclosed are synthetic nanocarrier compositions, and related methods, comprising therapeutic protein APC presentable antigens and immunosuppressants that provide tolerogenic immune responses specific to therapeutic proteins.

Tolerogenic synthetic nanocarriers to reduce immune responses to therapeutic proteins

This invention relates, at least in part, to compositions comprising synthetic nanocarriers and immunosuppressants that result in immune suppressive effects. Such compositions can further comprise antigen and provide antigen- specific tolerogenic immune responses.

Tolerogenic synthetic nanocarriers

Peptides that specifically bind erythrocytes are described. These are provided as peptidic ligands having sequences that specifically bind, or as antibodies or fragments thereof that provide specific binding, to erythrocytes. The peptides may be prepared as molecular fusions with therapeutic agents, tolerizing antigens, or targeting peptides. Immunotolerance may be created by use of the fusions and choice of an antigen on a substance for which tolerance is desired. Fusions with targeting peptides direct the fusions to the target, for instance a tumor, where the erythrocyte-binding ligands reduce or entirely eliminate blood flow to the tumor by recruiting erythrocytes to the target.

Erythrocyte-binding therapeutics

The present invention provides compositions and methods for inducing antigen-specific tolerance in a subject. In one embodiment, the present invention provides a composition comprising an apoptotic body and an epitope of an antigen. Also provided herein are methods of preparing and administering the composition. The composition and methods provided herein can induce antigen-specific tolerance in a subject.

Compositions and methods for antigen-specific tolerance

The present invention provides nanoparticle-coupled tolerogenic Treg cell therapy for treatment of immune and/or autoimmune disorders. In certain specific embodiments, the present invention can be used in the prevention and/or treatment of autoimmune diseases including, but not limited to, type 1 diabetes, lupus erythematosus (SLE), multiple sclerosis (MS), inflammatory bowel disease (IBD), rheumatoid arthritis, oophoritis, and autoimmune pathology associated with Graft versus Host Disease (GvHD) following hematopoietic stem cell transplantation.

Materials and methods for modulating immune responses

The present invention utilizes carrier particles to present antigen peptides and proteins to the immune system in such a way as to induce antigen specific tolerance. The carrier particle is designed in order to trigger an immune tolerance effect. The invention is useful for treatment of immune related disorders such as autoimmune disease, transplant rejection and allergic reactions.

Compositions and methods for induction of antigen-specific tolerance

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Compositions and methods for induction of antigen-specific tolerance