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11:44
Synthesis and Mass Spectrometry Analysis of Oligo-peptoids
Published on: February 21, 2018
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Tuning the biomimetic performances of 4-hydroxyproline-containing cyclic peptoids
R Schettini1, C Costabile, G Della Sala
1Department of Chemistry and Biology "A. Zambelli", University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy. iizzo@unisa.it.
Organic & Biomolecular Chemistry
|September 6, 2018
Summary
New cyclic peptoids with hydroxyproline were synthesized and tested for ion transport. These peptoids show promise for cancer therapy by correlating ion transport with cytotoxicity.
Area of Science:
- Medicinal Chemistry
- Supramolecular Chemistry
- Biophysical Chemistry
Background:
- Cyclic peptoids are peptide mimics with potential applications in medicine.
- Hydroxyproline residues can be incorporated into peptoids to modulate their properties.
- Ion transport across membranes is crucial for cellular function and can be targeted for therapeutic intervention.
Purpose of the Study:
- To design and synthesize novel cyclic peptoids incorporating (2S,4R)-4-hydroxyproline (Hyp) residues.
- To evaluate the alkali metal cation affinities and ion transport activities of these peptoids.
- To investigate the correlation between ion transport capabilities and cytotoxic effects on human cancer cell lines.
Main Methods:
- Mixed "submonomer/monomer" synthesis approach for cyclic peptoids.
- Nuclear Magnetic Resonance (NMR) spectroscopy for structural characterization and cation binding.
- HPTS (8-hydroxypyrene-1,3,6-trisulfonic acid) assay in liposomes to assess ion transport.
- Computational methods to complement experimental findings.
Main Results:
- Successfully synthesized five new cyclic peptoids containing (2S,4R)-4-hydroxyproline.
- Demonstrated varying alkali metal cation affinities and ion transport activities for the synthesized peptoids.
- Observed a correlation between the ion transport abilities and cytotoxic activities against selected human cancer cell lines.
- Highlighted the ease of functionalization of hydroxyproline residues for tuning peptoid properties.
Conclusions:
- The designed cyclic peptoids exhibit tunable ion transport properties.
- The functionalization of hydroxyproline residues is a viable strategy for developing peptoids with specific ion-binding and transport characteristics.
- These peptoids show potential as anticancer agents, warranting further investigation into their therapeutic applications.
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