CytomX Therapeutics, Inc.;The Regents of the University of California
发明人:
Daugherty, Patrick Sean,Stagliano, Nancy E.,Thomas, Jerry,Kamath, Kathryn,West, James W.,Khare, Sanjay,Sagert, Jason
申请号：
AU2013202755
公开号：
AU2013202755B2
申请日:
2013.04.06
申请国别(地区):
AU
年份:
2016
代理人:
摘要：
#$%^&*AU2013202755B220160512.pdf#####ABSTRACT OF THE DISCLOSURE The present disclosure provides activatable binding polypeptides (ABPs), which contain a target binding moiety (TBM), a masking moiety (MM), and a cleavable moiety (CM). The present disclosure provides activatable antibody compositions, which contain a TBM containing an antigen binding domain (ABD), a MM and a CM. Furthermore the present disclosure also provides ABPs which contain a first TBM, a second TBM and a CM. The ABPs exhibit an "activatable" conformation such that at least one of the TBMs is less accessible to target when uncleaved than after cleavage of the CM in the presence of a cleaving agent capable of cleaving the CM. The disclosure further provides libraries of candidate ABPs, methods of screening to identify such ABPs, and methods of use. The disclosure further provides ABPs having TBMs that bind VEGF, CTLA-4, or VCAM, ABPs having a first TBM that binds VEGF and a second TBM that binds FGF, as well as compositions and methods of use.
