Trop2 is a type I cell surface glycoprotein, which is limited in normal tissues but highly expressed in human tumor tissues. Overexpression of TROP2 can promote the growth, proliferation and metastasis of tumor cells. This differentiated expression of TROP2 protein makes it a new target for researchers to develop antibody-coupled drugs. Dato-DXd bound specifically to TROP2 and was internalized into tumor cells followed by intracellular trafficking to lysosome and DXd release, which induced DNA damage and Apoptosis in TROP2-expressing tumor cells in vitro.