Robots of DNA measuring 4 nanometers can kill cancer cells

Colombia - Robots of microscopic DNA molecule with the ability to walk, turn and even create products in their own little assembly line nanoscale, scientists have now successfully created.

Revolutionary device described in the journal Nature this in the future is expected to lead a robot army surgeon who clean human arteries or build a computer component in it.

One supporter of the project from New York Columbia University has even developed a robot spider measuring 4 nanometers, or about 100,000 times smaller than the diameter of human hair, so written in the Daily Mail.

Spider robot is expected to walk along the path of DNA. By using the groove in accordance with the sequence, the robot can be made to walk, turn left or right according groove of DNA strands.

The body of this robot consists of a protein called streptavidin. Attached to her leg three 'enzymatic DNA' single strand binding and fourth legs are the pieces that bring the spider to the starting point.

"Once the robot is released from the trigger, then he will tie and then cut the strands of DNA," says Milan Stojanovic as the head of the project team. After the string is cut, the robot legs began to gain line and DNA matching. with this, the robot is guided into the path set by the researcher.

In the meantime, to see these robots move, the researchers used an atomic force microscope. Not only that, this robot can record signs of illness on the cell surface, determine the cells are the cancer, destroying cancer cells and even robots that can provide compounds to kill him.

Robot 'DNA walk' is basically already developed long ago, but never achieved success it is today. "The robot can walk up to 100 nanometers or about 50 steps," said Professor Yan from Arizona State University.

"This is the first nano-machine system used to perform the operation. An important advancement in the evolution of DNA technology, "said Lloyd Smith of the University of Wisconsin, Madison.