US Patent 7807644 Chimeric proteins with phosphatidylserine binding domains

Chimeric proteins comprising soluble Tissue Factor (sTF) and another subunit (e.g., annexin V) are described. The proteins promote blood clotting and/or inhibit cancer by targeting sTF to specific receptors such as phosphatidylserine (PS) on activated cells. These chimeric proteins are useful in treating patients with excessive bleeding due to inborn problems, drug therapy, trauma or surgery and/or as an anti-cancer therapy, for example by causing blood vessels feeding cancers to become clotted, thereby preventing adequate flow of blood to a tumor, which in turn will lead to tumor inhibition and death or may be used in a therapy to cause clotting within blood vessels that pose a threat in the subject in non-cancerous conditions.