Abstract: The present invention provides a conjugate which contains a therapeutic moiety linked to a homing molecule that selectively homes to tumor blood vessels and tumor cells and that specifically binds the receptor bound by peptide KDEPQRRSARLSAKPAPPKPEPKPKKAPAKK (SEQ ID NO: 9). Methods of directing a conjugate of the invention to tumor blood vessels and tumor cells and of using a conjugate to treat cancer also are provided.

Abstract: The present invention relates to an action between an inhibitor of apoptosis (IAP) protein and members of the caspase family of cell death proteases, for example, an interaction of the X chromosome linked IAP (XIAP) and caspase-3, caspase-7 or caspase-9, wherein the IAP regulates the activity of the caspases. The invention provides screening assays for identifying agents that alter the specific association of an IAP such as XIAP, c-IAP-1 or c-IAP-2 and a caspase such as caspase-3 or caspase-7. The invention also provides screening assays for identifying agents that alter the specific association of an IAP such as XIAP, c-IAP-1 or c-IAP-2 and a pro-caspase such as pro-caspase-9. In addition, the invention also provides methods for identifying agents that modulate the activity of a caspase in the presence of an IAP and that regulate the activation of a pro-caspase by an IAP.