Swiss Researchers Develop Technique That Can Produce High-Resolution 3D Images of Cells

The researchers are calling the new method scanning ion conductance microscopy.

Swiss Researchers Develop Technique That Can Produce High-Resolution 3D Images of Cells

Photo Credit: Pixabay/ Colin00b

The researchers say the new method can prove very useful for studying infection biology

Highlights
  • Technique allows scientists to build high-definition 3D images of cells
  • This could offer insights into how the cells interact within themselves
  • And help scientists find solutions to fight infections and diseases
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The microscopic world of cells is incredibly important but tricky to understand in detail. Studying living cells at the nanoscale helps us understand the causes of disease but traditional approaches are filled with risks of damaging these cells themselves. Researchers at the Swiss Federal Institute of Technology (EPFL) have developed a new technique that allows scientists to build high-definition 3D images of cells inside and out. This, the researchers hope, will offer insights into how the cells interact within themselves and resultantly help scientists find solutions to fight infections and diseases.

Though many microscope imaging techniques are available, they have their pros and cons. For instance, electron microscopy can't be used on living cells because the intensity of the electron beam destroys the sample. Other methods, like fluorescence microscopy, have issues with giving the right resolution of images.

For their study, the EPFL researchers developed their own imaging technique. Their technique is based on the existing scanning probe microscopy, which is invasive to the cells. So, the researchers relied on the latest advances in nanopositioning, nanopore fabrication, microelectronics, and controls engineering to measure the flow of ions without needing to touch the sample.

Swiss researchers are calling the new method scanning ion conductance microscopy (SICM). The new technique studies the specimen from a distance of 25-50 nm. Since it never touches the specimen there is no damage caused to the sample. The researchers have combined the SICM method with stochastic optical fluctuation imaging (SOFI). The SOFI technique can look inside cells and watch the molecules and processes going on there. The two techniques together have allowed the researchers to take high-definition 3D images of the interior and exterior of cells simultaneously.

The research was published in two studies in the journals ACS Nano and Nature Communications.

The researchers say the new method can prove very useful for studying infection biology, immunology and neurobiology. It can also be used in the field of energy science to help in the production of solar fuels.


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