RSPO3 binding agents and uses thereof

摘要

The present invention relates to RSPO-binding agents, particularly RSPO3-binding agents and methods of using the agents for treating diseases such as cancer. The present invention provides antibodies that specifically bind human RSPO3 proteins and modulate β-catenin activity. The present invention further provides methods of using agents that modulate the activity of RSPO3 proteins and inhibit tumor growth. Also described are methods of treating cancer comprising administering a therapeutically effect amount of an agent or antibody of the present invention to a patient having a tumor or cancer.

主权项

1. An isolated monoclonal antibody that specifically binds human R-spondin 3 (RSPO3), which comprises:
(a) a heavy chain CDR1 comprising KASGYTFTDYS (SEQ ID NO:9), KASGYTFTSYTF (SEQ ID NO:34), or DYSIH (SEQ ID NO:78), a heavy chain CDR2 comprising IYPSNGDS (SEQ ID NO:10) or YIYPSNGDSGYNQKFK (SEQ ID NO:79), and a heavy chain CDR3 comprising ATYFANYFDY (SEQ ID NO:11), ATYFANNFDY (SEQ ID NO:35), or TYFANNFD (SEQ ID NO:80); and (b) a light chain CDR1 comprising QSVDYDGDSYM (SEQ ID NO:12) or KASQSVDYDGDSYMN (SEQ ID NO:81), a light chain CDR2 comprising AAS (SEQ ID NO:13) or AASNLES (SEQ ID NO:82), and a light chain CDR3 comprising QQSNEDPLT (SEQ ID NO:14) or QQSNEDPLTF (SEQ ID NO:83).