The invention provides methods and compositions for use in treating cancer, which advantageously may be achieved by targeting of a tumor microenvironment. The invention provides chimeric antigen receptors (CARs) that target a tumor microenvironment. In one aspect, the invention features an immune cell engineered to express: (a) a chimeric antigen receptor (CAR) polypeptide including an extracellular domain including a first antigenbinding domain that binds to a first antigen and a second antigen-binding domain that binds to a second antigen； and (b) a bispecific T cell engager (BiTE), wherein the BiTE binds to a target antigen and a T cell antigen. In another aspect, the invention features a pharmaceutical composition including the immune cell. In another aspect, the invention features a method of treating a cancer in a subject in need thereof, the method comprising administering the immune cell.
