Scientists have discovered how ultraviolet (UV) light degrades the coronavirus, offering new insights into how sunlight can help kill the virus.
The study, published in the journal Nature Communications, found that UV light damages the virus's RNA, the genetic material that carries the instructions for making new viruses. This damage prevents the virus from replicating and spreading.
"This is a breakthrough in understanding how sunlight can kill the virus," said study lead author Dr. David Brenner, director of the Center for Radiological Research at Columbia University Irving Medical Center. "Our findings could lead to new ways to develop treatments for COVID-19 and other coronaviruses."
UV light is a type of electromagnetic radiation that is found in sunlight and other sources, such as tanning beds and germicidal lamps. It is known to be effective at killing bacteria and viruses, but the exact mechanisms by which UV light damages viruses have not been fully understood.
The new study used a combination of experiments and computer simulations to show how UV light damages the RNA of the coronavirus. The researchers found that UV light causes the RNA to form bonds between its nucleotides, the building blocks of RNA. These bonds prevent the RNA from being translated into proteins, which are essential for the virus to replicate and spread.
"Our findings provide a detailed understanding of how UV light damages the coronavirus," said study co-author Dr. Amit Sharma, a research associate at the Center for Radiological Research. "This knowledge could help us to develop new ways to use UV light to treat COVID-19 and other coronaviruses."
The researchers say that their findings could have implications for the use of UV light to disinfect surfaces and objects in order to prevent the spread of the coronavirus. They note that UV light is effective at killing the virus on surfaces, but it is important to use UV light safely to avoid damaging skin and eyes.
"We hope that our research will contribute to the development of effective and safe ways to use UV light to prevent and treat COVID-19," said Brenner.
