Solid-phase synthesis of acridine-based threading intercalator peptides
摘要:
The preparation of a novel acridine-based amino acid is reported. This N-Alloc-protected monomer call be coupled and deprotected under solid-phase peptide synthesis procedures to create acridine-peptide conjugates as potential threading intercalators. A peptide containing this novel amino acid undergoes spectral changes in the presence of duplex DNA and RNA consistent with intercalative binding. (C) 2000 Elsevier Science Ltd. All rights reserved.
[EN] BIPIPERIDINYL DERIVATIVES USEFUL AS INHIBITORS OF CHEMOKINE RECEPTORS [FR] DERIVES DE BIPIPERIDINYL UTILISES COMME INHIBITEURS DES RECEPTEURS DE CHEMOKINE
integrin downstream signaling mediators in GBM such as focal adhesion kinase (FAK) seems reasonable and recently demonstrated promising results in early clinical studies. Herein, we report the structure-guided development of a series of covalent inhibitors of FAK. These new compounds displayed highly potent inhibitory potency against FAK enzymatic activity with IC50 values in the nanomolar range. Several
RNA binding and thiolytic stability of a quinoline-containing helix-threading peptide
作者:Malathy Krishnamurthy、Barry D. Gooch、Peter A. Beal
DOI:10.1039/b513591e
日期:——
Helix-threadingpeptides (HTPs) bind selectively to sites predisposed to intercalation in folded RNA molecules placing peptide functional groups into the dissimilar grooves of the duplex. Here we report the design and synthesis of new HTPs with quinoline as the intercalation domain. A quinoline-containing HTP is shown to bind selectively to duplex RNA binding sites. Furthermore, the affinity cleavage
Design, Synthesis, and Evaluation of Novel Imidazo[1,2-<i>a</i>][1,3,5]triazines and Their Derivatives as Focal Adhesion Kinase Inhibitors with Antitumor Activity
A series of triazinic inhibitors of focal adhesion kinase (FAK) have been recently shown to exert antiangiogenic activity against HUVEC cells and anticancer efficacy against several cancer cell lines. We report herein that we further explored the heterocyclic core of these inhibitors by a fused imidazole ring with the triazine to provide imidazo[1,2-a][1,3,5]triazines. Importantly, these new compounds displayed 10(-7-)10(-8) M IC50 values, and the best inhibitor showed IC50 value of 50 nM against FAK enzymatic activity. Several inhibitors potently inhibited the proliferation of a panel of cancer cell lines expressing high levels of FAK. Apoptosis analysis in U87-MG and HCT-116 cell lines suggested that these compounds delayed cell cycle progression by arresting cells in the G2/M phase of the cell cycle, retarding cell growth. Further investigation demonstrated that these compounds strongly inhibited cell-matrix adhesion, migration, and invasion of U87-MG cells.
Peptide Quinoline Conjugates: A New Class of RNA-Binding Molecules
作者:Malathy Krishnamurthy、Barry D. Gooch、Peter A. Beal
DOI:10.1021/ol036094+
日期:2004.1.1
A synthesis of 4,8-disubstituted 2-phenylquinoline amino acids is reported with the incorporation of one example into a peptide by solid-phase synthesis. The phenylquinoline-containing peptide binds an RNA target with nanomolar affinity (K-D = 208 nM). The strategy can be used to prepare a variety of 2-substituted quinoline amino acids for alteration of affinity in intercalator peptides. Since quinolones represent an important class of antibacterials, these compounds may be useful in the discovery of new antibacterial agents.