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.
