The present invention provides, among other things, nanoparticle compositions including a plurality of nanoparticles, each of which is comprised of a biodegradable or biocompatible polymer arranged in a nanoparticle structure defining an internal lumen and an external surface and one or more of a preparation of hydrophilic cellular components and a preparation of hydrophobic cellular components. In some embodiments, the preparation of hydrophilic cellular components is encapsulated within the internal lumen and the preparation of hydrophobic cellular components is associated with the external surface. Various methods of making and using disclosed nanoparticle compositions are also provided.
