Interaction between carbon nanotubes and mammalian cells: characterization by flow cytometry and application

Area of Science:

• Biomaterials Science
• Nanotechnology
• Cell Biology

Background:

• Carbon nanotubes (CNTs) offer unique properties for biomedical applications.
• Understanding CNT-cell interactions is crucial for developing new biotechnologies.
• Magnetic fields can influence nanomaterial behavior and cellular processes.

Purpose of the Study:

• To investigate the formation and properties of CNT-cell complexes under magnetic fields.
• To evaluate the utility of these complexes for cell separation and electroporation.
• To demonstrate enhanced transfection efficiency using CNT-facilitated electroporation.

Main Methods:

• Formation of CNT-cell complexes induced by a magnetic field.
• Quantitative analysis of CNT-cell interactions using flow cytometry and side scattering.
• Assessment of cell viability post-complex formation.
• Application of CNT-cell complexes for magnetic cell separation.
• Utilizing CNT-cell complexes to facilitate electroporation and gene delivery.

Main Results:

• CNT-cell complexes were successfully formed in a magnetic field.
• Flow cytometry showed increased side scattering proportional to CNT association with cells.
• Cell viability remained high after CNT-cell complex formation.
• Magnetic manipulation enabled efficient cell separation.
• Electroporation of CNT-cell complexes resulted in significant pore formation and successful EGFP expression at low voltage.

Conclusions:

• Magnetic field-induced CNT-cell complex formation is a viable strategy.
• These complexes facilitate both cell separation and enhanced electroporation.
• The CNT strategy offers potential for higher transfection efficiency and reduced electroporation voltage.