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Updated: May 31, 2026
10:08
Study of the Functions and Activities of Neuronal K-Cl Co-Transporter KCC2 Using Western Blotting
Published on: December 9, 2022
Dual pH- and Concentration-Dependent K+ Transporter with Auto-Regulation and Anticancer Activity
Yaqi Wu1,2,3, Cong Li1,2, Canhong Zhu1
1College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.
JACS Au
|May 29, 2026
Summary
Researchers developed a novel potassium (K+) transporter using 18-crown-6-ether. This pH-responsive carrier exhibits high selectivity and triggers cancer cell death, showcasing intelligent transmembrane system design.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Biomedical Engineering
Background:
- Designing artificial ion transporters with selectivity and stimuli-responsiveness is complex.
- Existing transporters often lack integrated control mechanisms for ion transport.
Purpose of the Study:
- To create an efficient, self-regulating artificial ion transporter.
- To achieve pH-gated potassium ion (K+) transport with high selectivity.
- To explore the potential of this transporter as an anticancer agent.
Main Methods:
- Synthesis of an 18-crown-6-ether-derived K+ carrier with amino group functionalization.
- Investigation of pH- and concentration-dependent self-regulatory mechanisms.
- Evaluation of K+ transport efficiency and selectivity (K+/Na+).
- Assessment of the carrier's effect on cellular K+ homeostasis and induction of apoptosis.
Main Results:
- The carrier demonstrated high K+ transport efficiency (EC50(K+) = 0.28 μM) at low concentrations (0.14 mol %).
- A pH- and concentration-dependent self-regulatory mechanism was identified, enabling pH-gated transport.
- Enhanced K+/Na+ selectivity was achieved (R_K+/R_Na+ = 7.2).
- The carrier disrupted cytosolic K+ homeostasis and induced mitochondria-associated apoptosis, indicating anticancer potential.
Conclusions:
- A minimalist, self-regulating artificial ion transporter was successfully designed.
- Built-in dynamic control is crucial for intelligent function in transmembrane systems.
- The K+ carrier shows promise as a novel anticancer therapeutic agent.
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