Abstract: The present disclosure describes an immunotherapy delivery hydrogel system. The immunotherapy delivery hydrogel system can be degradable and can release therapeutic agents at a tunable rate, and in a controlled manner. The immunotherapy delivery hydrogel system includes a hydrogel matrix and cancer therapeutic agent(s) associated with the hydrogel matrix. The hydrogel system can further include tumor cell-attractant(s) conjugated to the hydrogel matrix. The tumor cell-attractant(s) and the cancer therapeutic agent(s) act synergistically to treat cancer.

Abstract: Peptides that home, migrate to, distribute to, accumulate in, are directed to, and/or bind to tumors, cancerous tissues and cells thereof are disclosed. Pharmaceutical compositions and uses for peptides, peptide-active agent complexes comprising such peptides, or peptide-detectable agent complexes comprising such peptides are additionally disclosed. Such compositions can be formulated for targeted or untargeted delivery of a drug to a target region, tissue, structure or cell. Targeted compositions of the disclosure can deliver peptide, peptide-active agent complexes, or peptide-detectable agent complexes to target regions, tissues, structures or cells targeted by the peptide.