In a groundbreaking discovery, researchers at the University of California, Berkeley have demonstrated that it is possible to retrain magnetic cilia, the hair-like structures that line the respiratory tracts of many animals, to perform new functions. This breakthrough could have far-reaching implications for the development of novel therapies for respiratory diseases.

Magnetic cilia are tiny, hair-like structures that are covered in tiny magnetic particles. These particles allow the cilia to move in response to magnetic fields, which is essential for their normal function of sweeping away mucus and debris from the respiratory tract. However, until now, it was thought that magnetic cilia were incapable of learning new behaviors.

The Berkeley researchers, led by Professor of Bioengineering Michelle Khine, used a combination of genetic engineering and magnetic field stimulation to teach magnetic cilia to respond to specific patterns of magnetic fields. They found that by exposing the cilia to a series of carefully designed magnetic fields, they could train the cilia to move in new ways.

This discovery opens up new possibilities for the treatment of respiratory diseases. For example, it may be possible to use magnetic cilia to deliver drugs directly to the lungs, or to clear mucus from the airways of patients with cystic fibrosis.

"We are excited about the potential of this research to lead to new therapies for respiratory diseases," said Professor Khine. "By understanding how magnetic cilia work, we may be able to develop ways to harness their power to treat a variety of conditions."

The research team's findings were published in the journal Nature Materials.