Screening Bicyclic Peptide Libraries for Protein–Protein Interaction Inhibitors: Discovery of a Tumor Necrosis Factor-α Antagonist
摘要:
Protein-protein interactions represent a new class of exciting but challenging drug targets, because their large, flat binding sites lack well-defined pockets for small molecules to bind. We report here a methodology for chemical synthesis and screening of large combinatorial libraries of bicyclic peptides displayed on rigid small-molecule scaffolds. With planar trimesic acid as the scaffold, the resulting bicyclic peptides are effective for binding to protein surfaces such as the interfaces of protein-protein interactions. Screening of a bicyclic peptide library against tumor necrosis factor-alpha (TNF alpha) identified a potent antagonist that inhibits the TNF alpha-TNF alpha receptor interaction and protects cells from TNF alpha-induced cell death. Bicyclic peptides of this type may provide a general solution for inhibition of protein-protein interactions.
CHEMICAL SYNTHESIS AND SCREENING OF BICYCLIC PEPTIDE LIBRARIES
申请人:OHIO STATE INNOVATION FOUNDATION
公开号:US20160115202A1
公开(公告)日:2016-04-28
Disclosed herein are bicyclic peptide compounds, compositions comprising same, methods for making same, and libraries comprising same. The disclosed compounds, in various aspects, are useful for treating a variety of disorders, including inflammatory disorders, autoimmune disorders, and disorders of uncontrolled cellular proliferation. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.