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Drug receptor identification from multiple tissues using cellular-derived mRNA display libraries
Michael McPherson1, Yingfei Yang, Philip W Hammond
1Phylos, Inc., 128 Spring Street, Lexington, MA 02421, USA. mmcpherson@phylos.com
Chemistry & Biology
|June 25, 2002
Summary
mRNA display technology identifies drug-binding proteins from human tissues. This method successfully isolated FKBP12, a key FK506 binding protein, aiding drug discovery and receptor interaction studies.
Area of Science:
- Biochemistry
- Molecular Biology
- Drug Discovery
Background:
- Identifying proteins that bind to small molecules is crucial for drug discovery.
- Display technologies offer a powerful approach for screening proteome libraries.
Purpose of the Study:
- To utilize mRNA display technology for the selection of proteins with affinity for a specific drug.
- To characterize drug-receptor interactions and identify minimal binding domains.
Main Methods:
- Construction of an mRNA-protein fusion library from human liver, kidney, and bone marrow transcripts.
- Selection of binding proteins using an immobilized FK506-biotin conjugate.
- Iterative rounds of selection to enrich for specific binding clones.
Main Results:
- Three rounds of selection yielded full-length FKBP12 (FK506 binding protein 12 kDa) as the dominant clone.
- The method was also applied to map the minimal drug-binding domain within FKBP12.
- Successful identification of a specific protein-drug interaction.
Conclusions:
- mRNA display is an effective method for identifying proteins that bind to small molecules.
- This technology can be instrumental in discovering and characterizing new drug receptor interactions.
- The approach facilitates the mapping of drug-binding domains, aiding in drug development.