Abstract: The present invention provides a nanoparticle comprising: a core comprising a metal and/or a semiconductor; and a plurality of ligands covalently linked to the core, wherein said ligands comprise: (i) at least one dilution ligand comprising a carbohydrate, glutathione or an ethylene glycol-containing moiety; and (ii) a ligand of the formula D-L1-Z-L2, wherein D comprises an antifolate drug or folic acid, L1 comprises a first linker portion comprising a C2-C12 glycol and/or C2-C12 alkyl chain, L2 comprises a second linker portion comprising a C2-C12 glycol and/or C2-C12 alkyl chain, wherein L1 and L2 may be the same or different, and wherein Z represents a carbonyl-containing group linking L1 and L2, and wherein L2 is coupled to said core. Also provided are pharmaceutical compositions comprising such nanoparticles, medical uses thereof and methods for producing the nanoparticles.

Abstract: The present invention provides a nanoparticle comprising: a core comprising a metal and/or a semiconductor; and a plurality of ligands covalently linked to the core, wherein said ligands comprise: (i) at least one dilution ligand comprising a carbohydrate, glutathione or a polyethyleneglycol moiety; and (ii) a ligand of the formula MTX-L-, wherein MTX-L-represents methotrexate coupled to said core via a linker L. Also provided are pharmaceutical compositions of the nanoparticle, including gel formulations, and medical uses of the nanoparticle and pharmaceutical compositions, including for the treatment of an inflammatory or autoimmune disorder, such as psoriasis.

Abstract: The present invention provides a nano particle comprising: a core comprising metal atoms; a corona comprising a plurality of ligands covalently linked to the core, wherein said plurality of ligands comprises: at least one carbohydrate ligand; at least one glutathione ligand; and at least one autoantigen peptide ligand. Also provided are compositions and vaccines comprising the nanoparticles, methods for producing the nanoparticles and medical uses of the nanoparticles, including for antigen specific imunotherapy of an autoimmune disease, such as diabetes mellitus type 1, in a mammalian subject.