Microrobots Roll Along Blood Vessel Walls to Deliver Drugs
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Microscopic drug delivery devices that can travel against the flow of blood, developed by researchers at the Max Planck Institute for Intelligent Systems in Germany.

• The new microrobots were inspired by leukocytes that are naturally able to roll along the interior walls of blood vessels, and even move against the flow of the surrounding blood.

• However, while leukocytes are self-powered, the new devices rely on an external magnetic field to get them to their target.

• Having about the same size, shape, and locomotion capabilities as leukocytes, the microrobots feature a chamber that can be loaded with drugs and a surface to which antibodies can be attached.

• While a magnetic field can push the microrobots toward their destination, the antibodies help to bring each device precisely to where it is needed.

• Having built the microrobots, the researchers successfully tested them on mimics of blood vessels, using a magnetic field to roll them along the interior walls.

• Moreover, the team was also able to use the antibodies attached to the microrobots to guide the devices toward individual cancer cells where they dropped off their therapeutic cargo.

Source: https://www.medgadget.com/2020/06/microrobots-roll-along-blood-vessel-walls-to-deliver-drugs.html
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