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A halogen bond-mediated highly active artificial chloride channel with high anticancer activity
Changliang Ren1, Xin Ding1, Arundhati Roy1
1Institute of Bioengineering and Nanotechnology , 31 Biopolis Way, The Nanos , Singapore 138669 .
Chemical Science
|May 22, 2018
Summary
Researchers developed a novel artificial chloride channel using a simple peptide scaffold. This new channel shows high activity and selectivity, demonstrating potential for cancer treatment by effectively inhibiting cancer cell growth.
Area of Science:
- Supramolecular chemistry
- Membrane biophysics
- Medicinal chemistry
Background:
- Chloride channels are crucial for cellular functions and disease treatment, but existing artificial channels have limitations.
- Current artificial anion channels suffer from poor activity, low selectivity, and lack of structural modifiability.
- Limited research exists on artificial chloride channels compared to chloride carriers.
Purpose of the Study:
- To design and synthesize a novel, modular artificial anion channel scaffold.
- To investigate the potential of halogen bond-mediated assembly for creating transmembrane pathways.
- To evaluate the anticancer activity of the developed chloride channel.
Main Methods:
- Utilized a monopeptide-based scaffold for constructing halogen bond-mediated artificial anion channels.
- Employed directional assembly of electron-deficient iodine atoms to form transmembrane pathways.
- Optimized channel activity and selectivity through combinatorial modification of the scaffold backbone.
- Assessed the inhibitory concentration 50 (IC50) against human breast cancer cells (BT-474).
Main Results:
- Successfully constructed a robust and accessible artificial anion channel system.
- Developed a highly active chloride channel, designated A10, with enhanced transport properties.
- Achieved significant inhibition of human breast cancer cell growth with an IC50 of 20 μM.
- Demonstrated superior anticancer activity compared to cisplatin.
Conclusions:
- The novel monopeptide scaffold provides a versatile platform for creating artificial anion channels.
- The developed chloride channel A10 exhibits potent anticancer activity, suggesting therapeutic potential.
- This work opens new avenues for designing artificial ion channels for biomedical applications.
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