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Magnetic Force-driven in Situ Selective Intracellular Delivery.
Ran Wang1, Yu Ting Chow1, Shuxun Chen1
1Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China.
Scientific Reports
|September 23, 2018
Summary
This study introduces a novel, vector-free method for intracellular material delivery using magnetic forces. This technique achieves high efficiency and selectivity in mammalian cells, offering new possibilities for biologic research and therapeutics.
Area of Science:
- Biotechnology
- Cell Biology
- Nanotechnology
Background:
- Current intracellular delivery methods often rely on exogenous vectors, limiting selectivity and efficiency.
- Challenges exist in delivering functional materials into cells for research and therapeutic applications.
Purpose of the Study:
- To develop a vector-free, selective intracellular delivery method using magnetic forces.
- To demonstrate the efficiency and applicability of this novel delivery system in mammalian cells.
Main Methods:
- Utilized millimeter-sized iron rods/spheres driven by magnetic forces to induce transient cell membrane disruption.
- Delivered functional materials (nanometers to hundreds of nanometers) into various mammalian cell types in situ.
- Investigated the mechanism involving actin cytoskeleton and calcium signaling.
Main Results:
- Achieved efficient intracellular delivery of diverse functional materials with high cell viability and minimal adverse effects.
- Demonstrated successful gene silencing (siRNA targeting CXCR4) leading to inhibited cell migration and proliferation.
- Created complex cellular patterns, showcasing precise in situ cell targeting and material delivery.
Conclusions:
- Developed a magnetic force-driven intracellular delivery system offering in situ selectivity.
- This vector-free approach shows significant potential for advanced applications in biology and medicine.
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