Harker EA, Daniels DS, Guarracino DA, Schepartz A. Beta-peptides with improved affinity for hDM2 and hDMX.
Bioorg Med Chem 2009;
17:2038-46. [PMID:
19211253 PMCID:
PMC2926950 DOI:
10.1016/j.bmc.2009.01.039]
[Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Revised: 01/07/2009] [Accepted: 01/08/2009] [Indexed: 11/20/2022]
Abstract
We previously described a series of 3(14)-helical beta-peptides that bind the hDM2 protein and inhibit its interaction with a p53-derived peptide in vitro. Here we present a detailed characterization of the interaction of these peptides with hDM2 and report two new beta-peptides in which non-natural side chains have been substituted into the hDM2-recognition epitope. These peptides feature both improved affinity and inhibitory potency in fluorescence polarization and ELISA assays. Additionally, one of the new beta-peptides also binds the hDM2-related protein, hDMX, which has been identified as another key therapeutic target for activation of the p53 pathway in tumors.
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