Recognition proteins, such as antibodies, have many applications in medicine and biotechnology. Many of these applications would benefit from the ability to control, or activate, when the recognition protein binds to the target. This proposal seeks to develop and test a library of activatable antibody-inspired recognition proteins, or actibodies. Specifically, we first aim to introduce diversity into a regulated protein and develop a new display system and accompanying screening technology that is appropriate for this protein. We will then determine how well individual variants selected in this fashion can recognize the target molecules. In our second aim, we will determine whether members of this library are indeed actibodies, that can be activated to bind the target. This work will help us understand a newly discovered type of allosteric regulation, and determine whether it is useful for making regulated recognition proteins. The resulting actibody technology should contribute to a range of biomedical technologies, including targeted drug delivery, molecular imaging, in vitro diagnostics, and separation technologies. In particular, the ability to activate binding should enhance the ability to specifically identify only the correct target in all applications, and would also allow for gentle recovery of the target in the in vitro applications.

Public Health Relevance

Recognition proteins, such as antibodies, have many applications in medicine and biotechnology. Many of these applications would benefit from the ability to control, or activate, when the recognition protein binds to the target. This proposal seeks to develop and test a library of activatable antibodies, or actibodies.

Agency
National Institute of Health (NIH)
Institute
National Human Genome Research Institute (NHGRI)
Type
Exploratory/Developmental Grants (R21)
Project #
1R21HG006628-01
Application #
8227141
Study Section
Macromolecular Structure and Function B Study Section (MSFB)
Program Officer
Gatlin, Christine L
Project Start
2012-02-08
Project End
2014-01-31
Budget Start
2012-02-08
Budget End
2013-01-31
Support Year
1
Fiscal Year
2012
Total Cost
$192,865
Indirect Cost
$67,865
Name
University of Washington
Department
Engineering (All Types)
Type
Schools of Medicine
DUNS #
605799469
City
Seattle
State
WA
Country
United States
Zip Code
98195