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Updated: Aug 4, 2025

Author Spotlight: Exploring the Role of Ion Channels in Cancer: Characterization and Potential Treatment Approaches
Published on: June 16, 2023
A Benzohydrazide-Based Artificial Ion Channel that Modulates Chloride Ion Concentration in Cancer Cells and Induces
Abhishek Mondal1, Shreyada N Save2, Susmita Sarkar3
1Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
Abstract:
Fluctuations in the intracellular chloride ion concentration, mediated by synthetic ion transporters, have been known to induce cytotoxicity in cells by disrupting ionic homeostasis. However, the activity of these transporters in modulating autophagy remains largely unexplored. Here, we report a benzoylbenzohydrazide (1c) that self-assembles to form a supramolecular nanochannel lumen that allows selective and efficient transport of chloride ions across the cell membranes, disrupts ion homeostasis, and thus leads to the induction of apoptosis in cancer cells. It is important to note that the transporter was relatively nontoxic to cells of noncancerous origin. 1c was also shown to induce the deacidification of lysosomes, thereby disrupting autophagy in cancer cells. Taken together, these findings provide a rare example of an artificial ion channel that specifically targets cancer cells by induction of apoptosis via disruption of autophagy.
Insights
A novel benzoylbenzohydrazide (1c) self-assembles into nanochannels, selectively transporting chloride ions to induce apoptosis in cancer cells. This artificial ion channel disrupts cellular homeostasis and autophagy, sparing noncancerous cells.
Area of Science:
- Supramolecular chemistry
- Cell biology
- Cancer therapeutics
Background:
- Synthetic ion transporters can cause cytotoxicity by disrupting ionic homeostasis.
- The role of ion transporters in modulating autophagy is not well understood.
Purpose of the Study:
- To investigate a novel benzoylbenzohydrazide (1c) as a selective chloride ion transporter for cancer therapy.
- To explore the mechanism of 1c-induced cancer cell death, focusing on ion homeostasis and autophagy.
Main Methods:
- Self-assembly of benzoylbenzohydrazide (1c) into supramolecular nanochannels.
- Assessment of chloride ion transport across cell membranes.
- Evaluation of cytotoxicity in cancer and noncancerous cells.
- Analysis of lysosomal deacidification and autophagy disruption.
Main Results:
- Compound 1c self-assembles into nanochannels for selective chloride ion transport.
- 1c disrupts ionic homeostasis and induces apoptosis specifically in cancer cells.
- 1c causes lysosomal deacidification, leading to autophagy disruption in cancer cells.
- 1c exhibits minimal toxicity towards noncancerous cells.
Conclusions:
- Benzoylbenzohydrazide (1c) functions as a cancer-selective artificial ion channel.
- 1c induces apoptosis in cancer cells by disrupting ionic homeostasis and autophagy.
- This study presents a novel strategy for cancer treatment using targeted ion transport.
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