The present invention provides, in some embodiments, methods, compositions, systems, and kits comprising nano-satellite complexes comprising: a core nanoparticle complex comprising a biocompatible coating surrounding a nanoparticle core; 3-25 satellite particles attached to, or absorbed to, said biocompatible coating; a plurality of antigenic peptides conjugated to, or absorbed to, said satellite particles; and at least one additional property. In other embodiments, provided herein are nano-satellite complexes comprising: a core nanoparticle complex comprising a biocompatible coating surrounding a nanoparticle core; a plurality of satellite particles attached to, or absorbed to, said biocompatible coating; a plurality of antigenic peptides conjugated to, or absorbed to, said satellite particles; and a plurality of LIGHT (TNFSF14) peptides conjugated to, or absorbed to, said satellite particles. In some embodiments, administration of the nanosatellite complexes to a subject with cancer achieves long-term cancer remission (e.g., when combined with an immune checkpoint inhibitor, such as αPD1).