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controlled bacteria

18.02.2009

Employees of the Polytechnic School of Montreal (Canada) forced the bacteria to carry a payload, and were able to control their movement through the blood vessels.

For the experiment, we chose specific bacteria that live in sea silt and contain magnetic particles of iron oxide. The diameter of such a bacterium is two microns, so that it can pass through the thinnest blood capillaries.

Each bacterium was attached to a plastic ball with a diameter of 150 nanometers (the balls were pre-dressed with antibodies to this type of bacteria, which is why they stuck). The bacterium moves with the help of its flagellum, working with it like a screw. Using an externally applied magnetic field, the scientists directed the movement of bacteria through the pig's circulatory system.

The aim of the research is to get bacteria to carry drug particles to the place where these drugs are needed, for example, to a cancerous tumor.

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